Developer Profile

jbbfvt4112

Discovered public repositories for jbbfvt4112 in the GitHub catalog.

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jbbfvt4112/Weighing-Indicator--Batching-Control-Indicator

Weighing Indicator, Batching Control Indicator High conversion rate up to 200 times/second ● 6 kinds of Peak/Valley hold function can be selected (Manual or Automatic reset) ● 4 Programmable opto coupler input ● 9 kinds of input function can be selected ● Hysteresis Hi/Lo comparator is available (if optional set point comparator is installed) ● Span calibration by calculated sensitivity is Available ● RS data output can be activated by external Print function ● Cascaded RS232 option is available for multi drop communication ● Keyboard function can be remotely controlled by RS232/RS485 or opto coupler input● Optional RS232 or RS485 serial input/output port● Optional Hi/Lo comparator output ● Optional BCD board or analog output ● Optional 0...5V; 0...20mA; 4...20mA output

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jbbfvt4112/A-Distinguished-Gathering-in-Interweighing-of-2013

China International Weighing Instrument Exhibition (InterWeighing2013)2013-04-22The exciting and expectant interweighing exhition of 2013 in Shanghai has held successfully During April.Hundreds of companies make a full preparation to join this interweighing in Shanghai.There are thousands of visitors from home and abroad to attend this distinguished gathering.Not only has this International Weighing Instrument Exhibition offered a great platform for enterprises to show their corporate brand and image,but also it has been a wonderful place for customers to learn their desirous enterprises and establish business relationship with them.This exhibition has lasted for three days from 22th,23th and 24th of April.During this time,many visiters exchanged their business cards with their desirous exhibitors.Besides,they would communicate with the exhibitors to know more about products.Even there are some visitors to place some orders with exhibitors.Both visitors and exhibitors has obtained a lot from this weighing instrument exhibition.Therefore ,this exhibition was very significant for enterprises and customers from home and abroad. www.hzloadcell.com

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jbbfvt4112/How-to-Calibrate-Load-Cells

How to Calibrate Load CellsAs with any precise measurement device, calibration of a load cell, or the scale that uses it, is an exact science. Before delving into the subject of calibration, let’s take a closer look at the intricacies of the device, to get a better idea of exactly what we will be calibrating. A load cell is a type of transducer (meaning that it converts one type of energy into a different type of energy) which reads an initial amount of force or weight, and then converts this force into an electrical signal.www.hzloadcell.com

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jbbfvt4112/Weights---Measures-Tables

Weights Measures Tables AVOIRDUPOIS OR COMMERCIAL WEIGHT1 gross or long ton (l. tn.)=2240 pounds1 net or short ton (sh. tn.)=2000 pounds1 long hundred weight (l. cwt.)=112 pounds1 short hundred weight (sh. cwt.)=100 pounds1 pound (lb.) = 16 ounces (oz.)=7000 grains (gr.)1 ounce (oz.) = 16 drams (dr.)=437.5 grainsAPOTHECARIES' WEIGHT1 pound (lb. ap.)=12 ounces=5760 grains1 ounce (oz. ap.)=8 drams=480 grains1 dram (dr. ap.)=3 scruples=60 grains1 scruple (s. ap.)=20 grains METRIC EQUIVALENTS AVOIRDUPOIS OR COMMERCIAL WEIGHT1 long ton=1.016 metric ton=1016 kilograms1 short tun=0.9072 metric ton=907.2 kilograms1 pound av.=0.4356 kilograms=453.6 grams1 ounce av.=28.35 grams (g) 1 grain (gr.)=0.0648 gram (g) TROY WEIGHT1 pound (lb. t.)=12 ounces=5760 grains1 ounce (oz. t.)=20 pennyweights=480 grains1 pennyweight (dwt.)=24 grains METRIC WEIGHT1 metric ton (t)=1000 kilograms 1 kilogram (or kilo) (kg)=1000 grams=10 hectograms1 hectogram (hg)=100 grams=10 dekagrams1 dekagram (dkg)=10 grams 1 gram (g)=10 decigrams 1 decigram (dg)=10 centigrams 1 centigram (cg)=10 milligrams (mg) AVOIRDUPOIS EQUIVALENTS OF METRIC WEIGHT1 ton (metric)=0.9842 long ton=2204.6 pounds av.1 ton (metric)=1.1023 short ton=2204.6 pounds av.1 kilogram=2.2046 pounds av.=35.274 ounces av.1 gram=0.03527 ounces av. 1 gram=15.432 grains TROY AND APOTHECARIES' WEIGHTS EQUIVALENTS IN AVOIRDUPOIS AND METRIC WEIGHT1 pound Troy or apothecaries'=0.82286 pounds avoirdupois=373.2 grams1 ounce Troy or apothecaries'=1.09714 ounce avoirdupois=31.103 grams1 grain Troy or apothecaries'=1 grain avoirdupois=0.0648 gram1 pound avoirsupois=1.21528 pound Troy or apothecaries' 1 kilogram (kg)=0.911458 ounce Troy or apothecaries' 1 gram (g)=0.0322 ounce Troy or apothecaries' MEASURES OF LENGTH1 mile (mi.)=1760 yards=5280 feet=1.609 kilometers1 yard (yd.)=3 feet=36 inches=0.9144 meter1 foot (ft.)=12 inches=304.8 millimeters 1 inch (in.)=25.4 millimeters 1 kilometer (km)=1000 meter 1 meter (m)=10 decimeter=3.2808 feet=39.37 inches1 decimeter (dm)=10 centimeter=3.937 inches 1 centimeter (cm)=10 millimeter (mm)=0.3937 inches FLUID POWER EQUIVALENTS / EXACT EQUIVALENTS1 U.S. gallon=231 cubic inches =4 quarts or 8 pints =128 ounces (liquid) =133.37 ounces (weight) = 8.3356 pounds =3.785 liters 1 imperial gallon= 1.2 U.S. gallons 1 Liter= 0.2642 U.S. gallons 1 cubic foot= 7.48 gallons =1728 cubic inches =62.4 pounds (water) =760 mm Hg 1 Cu. ft. water= 62.4 pounds 1 Bar at sea level=14.504 PSI Approx. 1/2 PSI decreaseeach 1000 foot of elevation 1 Hg = 0.490 PSI =1.131 ft. water 1 horsepower= 33,000 ft. lbs. per minute =550 ft. lbs. per second =42.4 BTU per minute =2545 BTU per hour =746 watts or 0.746 kw 1 PSI=2.0416 Hg =27.72 water = 27.71 bar 1 Atmosphere= 1.013 bars =29.921 Hg = 14.696 PSI =760 mm Hg 1 Foot water column= 0.432 PSI 1 Foot oil column =0.354 PSI 1 Barrel oil=42 gallons 1 Micro-meter (micron)= 0.000001 meter = 0.001 centimeter = 0.00004 inch 25 Micro-meters=0.001 inchFLUID POWER EQUIVALENTS / APPROXIMATE EQUIVALENTS1 Pint = 2 cups = 32 tablespoons = 96 teaspoons = 16 fluid ounces = 1 lb.1 Quart = 4 cups = 2 pints = 32 fluid ounces = 2 pounds1 Gallon = 16 cups = 4 quarts = 8 pints = 128 fluid ounces = 231 cubic inches1 Cup = 16 tablespoons = 48 teaspoons1 Tablespoon = 3 tsp. = 1/2 fluid ounce1 Fluid oz. (volume) = 600 drops hydraulic oil1 Cubic inch = 330 drops (oil)FLUID POWER ABBREVIATIONS absabsolute (as in psia) A-Calternating current BhnBrinell hardness number BtuBritish thermal unit Cdegrees Centigrade (Celsius) ccclosed center ccwcounter clockwise cfmcubic feet per minute cfscubic feet per second circubic inches per revolution cimcubic inches per minute comcommon cpmcycles per minute cpscycles per second cu.in/revcubic inches per revolution cwclockwise cylcylinder diadiameter extexternal Fdegrees Farenheit flfluid fpmfeet per minute ftfoot ft-lbfoot pound gal gallon gpmgallons per minute HgMercury HPhorsepower HzHertz IDinside diameter ininch in-lbinch pound intinternal ipminches per minute ipsinches per second lbpound maxmaximum minminimum mtdmounted NCnormally closed NOnormally open NPTnational pipe thread NPTFdryseal pipe threads ocopen center ozounce P.O.pilot operated presspressure psipounds per square inch psiapsi absolute psigpsi gauge ptpint qtquart rradius rmsroot mean square rpmrevolutions per minute rpsrevolutions per second scfmstandard cu. ft. per minute Smlsseamless solsolenoid SSUSaybolt seconds universal SUSSaybolt universal seconds umicro-meters or microns Ttorque vacvacuum VIviscosity index viscviscosity www.hzloadcell.com

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jbbfvt4112/Weighing-Indicator

Weighing indicator also called weighing display control instrument, are load cell signal (or re-converted to weight by weight of the transmitter) digital display, and the weight data is stored, statistics, printed electronic device, commonly used in the workautomatic batching, weighing in agricultural production in order to improve production efficiency.www.hzloadcell.com

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jbbfvt4112/.Meet-you-at-Interweighing-2013

This year in Shanghai! Huazhun is going to meet at booth B112-B115/B122-B125, Shanghai Everbright Convention from 22-24/4/2013.We are looking forward seeing you in Shanghai, China.Load cell manufacturersingle point load cells type load celldouble ended beam load cellwww.hzloadcell.com

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jbbfvt4112/Structure-and-composition-of-floor-scale

Structure and composition of floor scale By the carrier, the framework, electronic floor scale, weighing sensors ( load cell ), connectors, junction boxes, weighing indicator composition can also choose to lead the slope, large-screen displays, printers, regulated power supply.The new design of the steel structure bearing, equipped with four high precision shear beam load cell and intelligent weighing indicator, composed of the weighing system. The system is highly accurate, rapid, stable and reliable measurement. Weighing instruments, has a gross weight, tare weight, net weight, date, time, serial number, license plate number, Item set. Chinese computer networking. Statistics to 1000 trips weight, classification number, customer number, Print pounds single operating daily, monthly, clear the table, and license plate number.Electronic floor scale according to user need the optional weighing indicator of a variety of models, different counting function of the weight management and measurement. Chosen for the chemical industry to use stainless steel countertops, accompanied by explosion-proof electrical devices, can be used for anti-corrosion waterproof and explosion-proof environment, the optional printer, large screen display can also be extended to the corresponding function.www.hzloadcell.com

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jbbfvt4112/Chinese-New-Year-is-approaching-

Chinese New Year is approaching! Wish all our customers and friends a happy and fruitful new Year!At the same time, we'd like to inform you that the production will be prolonged during the period of Chinese New Year! So If you need load cells, it is better to arrange delivery asap.! Our load cells of 300g, 600g,3kg,5kg, for high precision jewellery scale and precision balance always have stock!www.hzloadcell.com

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jbbfvt4112/Application-of-floor-Scale

Application of floor Scalefloor scale, simple, lightweight, easy handling, is widely used in warehouses, workshops, freight yards, bazaars, construction sites and other places, suitable for small vehicles loaded weighing.Floor scale is a weighing larger volume or mass of objects weighing apparatus. Maximum weighing 2,3,5 t. The ground balance structure and function is divided into mechanical floor scale, electronic floor scale two categories.Similar mechanical floor scale principle mechanically balanced. It is equipped with scales wheel, can be used to move on the ground. Load-bearing and Taiwan box made with sufficient strength and impact resistance welding method. It can weigh the various types of materials, and including ingot steel strip coils and other metal materials.Electronic floor scale weighing sensor, load-bearing and weighing display. Can be placed on a solid ground weighing can also be placed in a shallow pit or be installed on both sides of the approach road with a certain slope for trolley weighing use the ground scale product manufacturing process is almost the same, the product the structure is basically the same, or less the same kinds of parameterswww.hzloadcell.com

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jbbfvt4112/How-to-select-load-cell--Weighing-Sensor--

How to select load cell (Weighing Sensor)? Load cell (Weighing sensor) selectionThe load cell selection should take into account many factors, the actual use of them we consider the following factors. In addition, the sensitivity of the load cell, the maximum number of divisions, the smallest verification scale value indicators must be considered in the sensor selection.The number and range of the sensorThe choice of the number of sensors is based on the use of electronic weighing scale body needs to support the number of points (support points should the principles the scale body geometric center of gravity and the center of gravity coincides determined) may be. In general, the scale body several support points on the selection of a few sensors.Sensor range selection can be based on the maximum weight value of the scale, the selection of the number of sensors, scale body weight, to determine the maximum partial load and dynamic load factor comprehensive evaluation. In general, the range of the sensor the closer is assigned to each sensor load, the higher weighing accuracy. However, in actual use, which scale body weight, tare weight, partial load and vibration impact loads, so the selection of the sensor, to consider a number of factors to ensure that the load sensor in addition to the object to be weighed, there the safety and life of the sensor. The empirical formula given below after a large number of experimental verification.Formula is as follows:C = K0 × K1 × K2 × K3 (Wmax W) / NWhere C rated range of a single sensorW a scale body weightThe Wmax one called the maximum net weight of the objectN-scale body adopted by a number of support pointsK0 insurance factor, generally between 1.2 to 1.3K1 an impact coefficientThe K2 scale body's center of gravity offset coefficientK3 a wind pressure coefficientAccuracy class selectionThe level of accuracy of the load cell sensor nonlinearity, creep, repeatability, hysteresis, sensitivity, and other technical indicators. Optional should not blind pursuit of high-grade sensors, should consider the level of accuracy and cost of electronic balance. Under normal circumstances, the total accuracy of the selection of the sensor is non-linear, non-repeatability and hysteresis of the three indicators and slightly higher than the rms value of the accuracy of the scale. Posted 4 days ago by Luna Zeng www.hzloadcell.com

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jbbfvt4112/The-difference-between-single-point-load-cell-and-shearbeam-load-cell

Single point load cell, more than 90% of the sensor are balance beam sensor, elastomer hard aluminum alloy, two holes in its appearance. Such sensors usually do the four corners of the correction to guarantee partial load error in the qualified range, and thusa single point sensors can constitute scales. Cantilever sensors usually have two structures of the balance beam and shear beam for the steel elastomer, can not fix the four corners of the partial load error, need the sensor can constitute Weighing more than three. 1) Shear Beam load cell appearance there is a blind hole of a pair of symmetrical, resistance strain gauges affixed with a V-shaped blind hole, the blind hole with silicone or PU glue potting, high-grade stainless steel sheet by laser welding seal. 2) steel the sensor internal structure of the balance beam similar to the balance beam and aluminum alloy the outside bellows welded seal. therefore can only see the outside of the bellows.www.hzloadcell.com

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jbbfvt4112/Precision-grade-of-creep-for-a-load-cell

For load cells of jewellery balance / precision balancem, the creep precision is one of the most important standard. For normal C3 standard, the creep precision is only about 0.023%, for the high precision balance, it is normally not enough. we have precision of 0.02%,0.01% and 0.005%.The smaller the creep is, the load cell is better!Our 651 series (single point load cell) is most suitable for precision balancewww.hzloadcell.com

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jbbfvt4112/What-kind-of-load-cells-can-be-used-in-truck-scale-

What kind of load cells can be used in truck scale?Normally the truck scale use load cell of Column type and double ended shearbeam. Our double ended shearbeam load cell-693B,612B, 653B, are widely used in truck scale.Our Column load cell 689C, is interchangeable with HBM C16, it is one of our best selling item for truck scale!www.hzloadcell.com

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jbbfvt4112/creep-precision-of-load-cell-for-electronic-scale

To make high precision jewellery balance or electronic balance.normally use single point load cell, Creep of load cell is most important! The software of jewellery balance is also important. If have excellent software, you can use creep precision of 0.02% to make scale of 300g/0.01g. if not, you need to use a load cell of creep precision 0.01% or even 0.005% to make 300g/0.01g scale, or 600g/0.01g. Huazhun model 651C is especially designed for jewellery scale or electronic balance of 300g/0.01g, 600g/0.01g.www.hzloadcell.com

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jbbfvt4112/Creep-standard-of-OIML-C3-load-cell

OIML C3 standard means 3000divisions !The load cell can be used to make weighing scale of 3000divisions without special software. Creep is a very important function for a load cell. OIML C3 require the loadcell have a creep precision not less than 0.03%. normally the load cell manufactory will make OIML C3 load cell with a precision of 0.023%! Some quality factory can make the creep precision to 0.015%. www.hzloadcell.com

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jbbfvt4112/application-of-HBM-load-cell-C16

The application of HBM Load cell C16HBM C16 is a column load cell, the module of it can be applied to 20 t ... 200 t C16 sensor module for tanks, weight level measurement is fast, accurate, and reliable method to measure quality and cost. Construction industry tank, coal bunker, or gas or liquid tank, C16 weighing modules special features to meet the above applications ...Construction industry tank, coal bunker, or gas or liquid tanks, C16 weighing modules special features to meet the above application.All weighing module plated steel or stainless steel, built-in support rod, used to absorb the level of force. Away from the protection device is included in the annex. .C16 load cell self-resetting, please reference the C16 Technical Manual.C16 weighing the technical characteristics of the module:• OIML certification, Accuracy class D1, C3 or C4• ATEX95 zones 1 21, zones 2 22 www.hzloadcell.com

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jbbfvt4112/Facebook-account-of-HUAZHUN-WEIGHING

Huazhun Weighing Technology CO., Ltd. have its own Facebook account now, pls. search luna.zeng@hotmail.com, you can share information with us! it will issue news about load cells, weighing sensors,weighing industrial, etc.www.hzloadcell.com

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jbbfvt4112/application-of-Vishay-Tedea-1004

application of Vishay Tedea 1004VIshay Tedea 1004 is a single point load cell, small capacity from 300g, 600g, to 1kg, 2kg. It is widely used in high precision jewellery balance, precision balance, electronic balance and some other weighing devices of high precision, such as medical weighing, etc. HUAZHUN Brand 651C can be interchangeable with TEdea 1004www.hzloadcell.com

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jbbfvt4112/InterWeighing2011

China International Weighing Instrument Exhibition (InterWeighing2011)2011-06-09China International Weighing Instrument Exhibition (InterWeighing2011) was held during April 22,23,24,2011. our booth no. is C347-C348/C377-C378This exhibition is Include all kinds of scales, balance, weighing system, indicator, load cell, testing instrument and device, electronic component and materials used in weighing instrument.www.hzloadcell.com

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jbbfvt4112/Weighing-sensors-certification-2012

erms set forth in the load cell certification is generally agreed that the certification is approved by NTEP and OIML ~ R60. NTEP certified in North America and South America is considered the standard of weights and measures. To OIML-R60 certification is considered the standard in Europe and Asia. The certification is a form of a certificate on behalf of weights and measures authority, it applies only to certain types of fixed range of the sensor and the kind of models.Certificate (CofC) is issued by NTEP approved load cell model, it will elaborate on the certificate applies to the different range and range of Vmin and Vmin and the minimum weight increment in the measurement of the weight sensor. Different Vmin may be produced by different manufacturers seemingly the same load cell, weighing the pros and cons of sensor performance is determined by the weights and measures testing agencies. For example, an approved precision level III 5,000 d weight sensor, even if only 50% of the load cell rated range, its output may also be divided into 5,000 points. This is the importance of Vmin.Different countries in Europe and Asia, 0IML-R60 load cell Certificate in weights and measures authority, but not every OIML countries recognize. Metrology institute of the four EC countries can be notification issued certificate recognized by the EC countries in Western Europe. Eastern European countries, China and Russia need their own issued OIML certificate. If you want to export to these countries weighing system, you should check your weight sensor is in line with their certification.Read different versions of the manual to meet the NTEP technical specifications or to meet the OIML technical specifications does not mean that the product certification of weights and measures agencies, it can simply think that only the manufacturer's product meets the NTEP or OIML technical specifications.www.hzloadcell.com

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jbbfvt4112/Direction-of-the-load-cell

With the load cell in the modern industrial applications, the development direction of the load cell is also constantly changing. Direction of the load cell is now mainly in the following eight categories:1: High-density, high spiritual density.2: High reliability, wide temperature range, immunity to interferenceThree: miniaturization (small size, light weight) and high strength.Four: micro-power and passivity.Five: intelligent, digital, high response rate.Six: interchangeability, low cost, safe non-polluting direction.Seven: anti-environmental (heat, vibration, acid, alkali, water, air) and strong direction.Eight: biomimetic sensor, the sensor function and the human five senses comparable. www.hzloadcell.com

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jbbfvt4112/What-is-creep-of-a-load-cell-

What is creep of a load cell?The creep of a load cell means: when load cell is in stable environment( for example, temperature, humidity) and other changeable aspects keep no change (for example: estable force system, load and other aspects),when load cell is loaded quickly a nominal load and unload the nominal load, within a certain time, the output of load cell changes with time. the normal creep have two types: positive creep, negative creep. www.hzloadcell.com

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jbbfvt4112/OIML-C6-standard-load-cell-CE-certificated

One of our best advantage single point load cell, 628A-3kg, 5kg, 15kg, 30kg..., super high precision up to OIML C6 standard, especially for weighing scale of high solution, such as weighing scale of 100,000divisions, 200,000divisions and even 300,000solutions. it can be interchangeable with TEdea 1042, Rice Lacke RL1042CE certificatedwww.hzloadcell.com

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jbbfvt4112/CE-Certificated-approved

We are very glad to inform our customers:All of our load cells got CE certificated at Jan.,2013!www.hzloadcell.com

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jbbfvt4112/The-use-of-TEdea-1004

Vishay Tedea 1004 is a high precision load cell, which is widely used in high precision industrial, like Medical industry, Precision balance, jewellery balance, etc. There are many brand can be interchangeable with it, such as NMB BCL, HUAZHUN 651C, HBM SPLwww.hzloadcell.com

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jbbfvt4112/ISWM-2013-Technical-Conference

ISWM 2013 Technical ConferenceThe ISWM 2013 Technical Conference will be held March 13-15, 2013 at the Trump Plaza Hotel Casino in Atlantic City, New Jersey. The website will be updated as details are available. SAVE THE DATE and plan to join your fellow ISWM Members for technical and educational training at its best!Load cell manufacturersingle point load cells type load celldouble ended beam load cellwww.hzloadcell.com

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jbbfvt4112/Certified-Weighing-Technician--CWT-

Certified Weighing Technician (CWT) Certified Weighing Technicians have a broad range knowledge of the technical and regulatory requirements of the industry, including installing, evaluating and servicing the customers weighing needs. The Certified Weighing Technician has:technical knowledge in areas of testing, calibrating and troubleshooting for small/light capacity, medium/heavy capacity scales and balance weighing products.technical knowledge in the area of systems and systems communications.knowledge and proper completion of testing, reporting and documentation required within the weighing industry.knowledge of testing and legal regulations, as they relate to each customer's particular requirements.knowledge to reduce safety hazards by understanding and practicing safety standards as they relate to the customer's requirements.knowledge of the proper use and maintenance of testing equipment and tools used within the weighing industry.Assessment StructureThe CWT examination will consist of approximately 100 multiple-choice questions (MCQ). Several types of MCQs may appear on an examination. The A-type consists of a stem and five options; it is the most common MCQ. The B-type is a short matching item. The K-type allows a combination of options to be selected. The S-type is a scenario with several common item types (or sets of items).Eligibility RequirementsThe prerequisites for taking the Certified Weighing Technician test are:Have, within the last five (5) years, a minimum experience of two (2) years working within the weights and measures industry in a technical or related position.Have a High School diploma or equivalent.Hold a Handbook 44 Certification from an ISWM approved testing center or demonstrate the equivalent.Examination ContentCertified Weighing Technician Examination OutlineI. Small-Light Capacity (approx. 16% of exam)A. TestingB. CalibrationC. Trouble-ShootingII. Medium-Heavy Capacity (approx. 16% of exam)A. TestingB. CalibrationC. Trouble-ShootingIII. Balance (approx. 16% of exam)A. TestingB. CalibrationC. Trouble-ShootingIV. Systems (approx. 16% of exam)A. Communications DiagnosticsB. Systems Set-UpC. Systems OverviewD. Basic Blue Prints SchematicsV. Documentation (approx. 6% of exam)A. Placed-in-ServiceB. As FoundC. As LeftD. Awareness of Customer DocumentsVI. Safety (approx. 5% of exam)A. Lock-out/Tag-outB. Confined SpaceC. Power SafetyD. Personal Protection Equipment (PPE)VII. Legal Regulations (approx. 5% of exam)A. Handbook 44B. NTEPC. Local RequirementsVIII. Testing Regulations (approx. 5% of exam)A. GIPSAB. PUB 112 EPOC. HB 44D. Proper Class of WeightsIX. Test Equipment/Tools (approx. 5% of exam)A. Maintenance of Test WeightsB. Device KnowledgeC. Protocol AnalyzerD. Manufacturers’ SpecificationsX. Basic Scale Components Technical Terms (approx. 10% of exam)A. MechanicsB. ElectronicsC. Terms and DefinitionsD. Basic Computer KnowledgeThe exam will contain approximately 100 questions, and the time to complete the exam will be a maximum of three hours and fifty minutes.Certified Weighing Technician Examination Sample Questions001. When replacing a local cell in a bench scale, the technician should:(1) not re-adjust overload stops.(2) use the original load cell shims, if possible.(3) allow twice acceptance tolerance errors.(4) run a shift and linearity test.A. (1), (2) and (3) only are correct.B. (1) and (3) only are correct.C. (2) and (4) only are correct.D. (4) only is correct.E. All are correct.The correct answer is C.”Match the scale types and accuracy classes.A. analytical balanceB. wheel head weighersC. hopper scale (non-grain)D. 10,000 lb. floor scaleE. jeweler’s scale002. class I003. class II004. class III005. class III LThe correct answers are A”, E”, D” and C.”006. The minimum amount of test weight required to test a 300 lb. scale in a legal-for-trade application is:A. 50 lb.B. 75 lb.C. 150 lb.D. 300 lb.E. whatever can be conveniently carried.The correct answer is D.”Information about and application for testing can be found here. www.hzloadcell.com

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jbbfvt4112/Overview-of-a-vehicle-weighing-sensor2012-02-10

Overview of a vehicle weighing sensor2012-02-10Edit Text--Based on the characteristics of the virtual instrument, the capacitance of the load cell vehicle load detection device, the plate spring in the vehicle buffer damping as the load cell elastomer, can be static or dynamic testing anytime, anywhere. Buffer damping loads, car bodies (plate spring) deformation, the distance between two plates of the specific location of capacitive sensors change capacitance value changes, the output voltage of the sensor also will be changed. Based on virtual instruments starting from the parameters of the static test performance analysis, analysis of changes of goods when the vehicle is stationary variation of voltage between the capacitive sensing clamor bipolar plate as a reference for testing the dynamic performance. Voltage value corresponding to the specific load analysis, virtual instrument program sub-VI to the error analysis and curve fitting, convenient and intuitive. The installation of the capacitive load cell shown in Figure 1.Capacitor plate components installed in the frame lower part, about the middle; capacitor bottom plate parts installed in the axle above the central part of the upper and lower plates and the capacitor is. Vehicle axles are installed at the top of a capacitance sensor.The relationship between the various elements of the vehicle weighing system are as follows:Loads, car buffer shock absorber bodies (leaf spring) deformation, the distance d between the two plates of the capacitive sensor changes, the capacitance value of the sensor also changes. Pre-calibrated the relationship between the sensor circuit output voltage of the axle load values, the future worth to the quality of the axle load axle sensor circuit voltage. The quality of the load of each axle together, you can get the vehicle payload mass.Related recommendation：· Single load cellwww.hzloadcell.com

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jbbfvt4112/The-load-cell-errors

The load cell errors 2012-02-24Load cell errors including non-linearity, repeatability, creep, hysteresis error and the additional error of the sensor zero drift due to changes in ambient temperature and its rated output. The level of precision weighing sensor depends on the maximum error in these errors, usually expressed in the percentage of sensor rated output. For example: If the sensor point rating of 0.05 indicates that the maximum error in the above error does not exceed 0.05% of the sensor rated output of China's national standards, the level of resistance strain weighing sensor is divided into: 0.02,0.03,0.05, 0.1,0.2,0.3,0.5,1.0 level.Related recommendation：· Small range weighing sensor PTY639· The load cell interference sources· Overview of a vehicle weighing sensorwww.hzloadcell.com

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jbbfvt4112/Load-cell-technology-development-trends-in-recent-years

The main two development paths: the first military representative of the United States civilian, the first way to improve after popular and practical use in Japan as the representative of the commercialization of education followed to improve the way. China should belong to the latter, although the military-industrial sector applications earlier, but not converted to civilian use, rapid development and popularization or in the past 20 years. In recent years, the critical period of the urgent need to improve the overall technical, technological and quality level of the load cell in China.The international load cell technology development trends is extremely important indicator of quality, accuracy, stability and reliability of the load cell as a manufacturing technology and manufacturing processes as the core competitiveness, firmly grasp the characteristics of the load cell issues, production and application of basic research, technology and applied research, its direction and is characterized by:(1) in the product design and manufacturing process, to learn the intended real and virtual technology of computer in engineering product design, speed development and reduce development risk;(2) in elastomer processing, simplified experience from the development of cell processing technology to the integrated processing technology; rigid manufacturing flexible manufacturing; judgment development to intelligent quantitative analysis. Commonly used for flexible manufacturing cells and flexible manufacturing systems;(3) production technology workshop craft instead of the traditional customs read, but a combination of one of technology and management systems engineering. In order to meet the multi-species, mass production, to ensure the homogeneity of the product technical performance, the production process must be to minimize the manual, man-made control, increasing the direction of the semi-automated and automated processes. For example: using computer control, human-computer integrated process systems and test network information systems, etc.;(4) the stability of the treatment process related to the stability and reliability at high temperature, low temperature cryogenic fatigue, fluctuating based on the static pressure of overload, but also developed VSR, resonance aging process, resonance 10 minutes can be eliminate most of the residual stress.The variety and structure of the load cell in the design and manufacture of technical support, but also innovative, technical features and expanding range of applications, the main results are:(1) Revere company developed PUS type with atmospheric pressure compensation function of the dual-use load cell tension and compression, for high accuracy testing platform weighing platform, accuracy up to 5000d;(2) Germany HBM successfully developed C2A, C16A two different structure of 1-100t pressure shell protection of explosion-proof weighing sensor, and its explosion-proof performance in line with the European EN50014 and EN50018 d class standard;(3) Si Kaimei company has developed a new generation of high accuracy stainless steel F60X series 5 a 5000kg load cell, accuracy 6000d. For humidity, corrosive environment, and waterproof;(4) Seth Kirchner, Germany developed beryllium bronze for the elastomer material, fast load cell weighing 200. Which is characterized by good linearity, high natural frequency, fast dynamic response. Original oil damping device with overload protection device integration, to ensure that weighing fast, long working life. Assembled a 30kg electronic platform scales, accuracy up to 4000d;(5) U.S. THI 1410 type developed by a 30kg aluminum alloy load cell, accuracy levels superior to Class C3, can withstand the centrifugal force and vibration, built a special viscous dampers weigh when you have a fast stable time, usually less than 50ms;VT a BLH (6) developed a new weighing module with components function and high load efficiency, the factory plug and play, and can automatically adjust the position, without stirring, eccentric and vibration.Only more than a few cases, sufficient to represent the direction of the development of new products, reflecting the pilot of the technology, the advanced nature of the process. Terms of technical content, high accuracy atmospheric pressure compensation technology; technology for fast, dynamic measurement of the load cell viscous dampers fast and stable; flameproof pressure shell (a 6000d, 4000d) load cell manufacturing technology; design and manufacturing technology; component of the new module design technology.Related recommendation：· Miniature load cell· Weighing the type of sensor error· Note when the load cell selection www.hzloadcell.com

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jbbfvt4112/Minimum-load-cell

Miniature load cell2012-05-15Edit Text--Miniature load cell system is in the traditional resistance strain sensor based on modern microelectronics, micro-computer technology integration and developed a new type of electronic weighing sensor.Related recommendation：· Weighing the type of sensor error· Note when the load cell selection· Resistance strain gauge load cellwww.hzloadcell.com

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jbbfvt4112/Weighing-the-type-of-sensor-error

A load cell application error is generated by the operating staff, this also means that the causes of, for example, temperature measurement errors, including incorrect insulation between the probe placed errors or probe measurement locations, the other some application errors, including error in the air or other gas purification process, application errors involving the error of the transmitter placed, and thus the positive or negative pressure will be the correct reading impact.2, the characteristic error is defined as equipment inherent, it is the ideal equipment, the difference between recognized the transfer of features and the true character of this error include DC drift value, beveled or slant of the non-linear.3, the dynamic error characteristics of the sensor and calibration are applicable under static conditions, which means that the input parameters used in static or quasi-static, many sensors with strong damping, so they will not be changes in the input parameters fast response thermistor requires a few seconds to respond to temperature step change., Therefore, the thermistor will not immediately jump to the new impedance, or mutate the contrary, it is slowly changing to the new value, which, if the delay characteristics of the load cell to respond to rapid changes in temperature , the output waveform will be distorted, since there contains a dynamic error. The dynamic error factors are response time, amplitude distortion and phase distortion.5, insert the error is the error generated when a sensor is inserted in the system, due to changes in the measured parameters, generally when making electronic measurements would be such a problem, but will be similar in other ways of measuring, for example, a voltmeter to measure voltage in the loop, it must have an inherent impedance than the loop impedance is much larger, or there is a loop load, then the reading will have large errors, this type of error causes is to use a pair of systems (such as pressure systems) are too large transmitter; or the dynamic characteristics of the system is too slow, or too much heat the system self-heating load.Environment error from the sensor to use the environment load cell factors including temperature, or swing, vibration, altitude, volatile chemicals, or other factors, which often affects the characteristics of the sensor, so in practical applications, these factors are always are classified together.Related recommendation：· Note when the load cell selection· Resistance strain gauge load cell· The load cell errorswww.hzloadcell.com

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jbbfvt4112/Note-when-the-load-cell-selection

A structure and the choice of the formChoose what kind of structure in the form of the load cell. Mainly depends on the structure and use of weighing the environmental conditions. To make a low profile weighing apparatus, generally should be used in the cantilever and the spoke sensor. Highly strict requirements on the shape, you can pillar sensor. In addition, the weighing instrument to use the environment is very humid, a lot of dust, you should select the sealed form of good; explosion hazards, you should make use of intrinsically safe sensors; elevated weighing system, you should consider safety and overload protection; used in high temperature environment, you should use a water cooling jacket of the load cell; in the alpine region, you should consider the use of the sensor of the heating device. In the form of selection, a factor to be considered are: maintenance convenience or cost. Once the weighing system has gone wrong, can be very smooth, very quick access to repair the device. If you can not do the form of a note to select enough suitable.Two. Range selectionWeighing systems that value the closer the rated capacity of the sensor, its weighing accuracy, the higher. However, when in actual use because of the scale body weight, tare weight and vibration, shock, partial load, and thus limit the amount of the weighing system for the selection of sensors principles are very different. As a general rule, you can: * single-sensor static weighing systems: the fixed load (scales, containers, etc.) + change in load (load) required weighing ≤ selection of X70% of the rated load of the sensor. * Multi-sensor static weighing system: a fixed load (scale, container, etc.) + change in load (load) required weighing ≤ choice of sensor rated load X with the sensor number of X70%. 70 percent of the coefficient is to consider the vibration, shock, partial load factors increase.Should be noted that: First, select the sensors have the rated capacity to try to meet the manufacturer's standard product line, value, otherwise, use non-standard products, not only expensive, but after the damage is difficult to substitution. Second, in the same weighing system does not allow selection of the rated capacity of different sensors. Otherwise, the system can not work properly. Furthermore, the so-called variable load (need to weigh the load) is the real load added to the sensor from the scale platform to the process of force between the sensor value is passed, the multiplier and the decay of institutions (such as leverage in the system), should consider its impact.Three precision select (accurately, we selected)The choice of the level of accuracy of the weighing sensor. To be able to meet the requirements of the weighing system accuracy level, as long as they can meet this requirement can be. 2500 indexing sensor can meet the requirements, do not use 3000 points. In a weighing system used a few of the same form the  the same rated capacity of the sensor in parallel, the error Δ. Are: Δ = Δ/n1/2 The (2-12) where: Δ: a single sensor error; n: number of sensors. In addition, electronic weighing systems are generally composed of three parts: they are a load cell, weighing display and mechanical structure. When the system's tolerance to constitute the main part of the load cell, as a non-automatic weighing error (Δ) can normally only achieve 0.7 the ratio of components. According to this, since is not difficult to required sensor accuracy to make a choice.Fourth, the special requirements of non-standard typeIn some of the weighing system, there may be some special requirements, such hope that the elastic deformation of the load cell, which can allow small scale units in the sink when weighing, making the trucks at the driving track scale into and exit out of the scale platform to reduce the shock and vibration. In addition, constitute a dynamic weighing system, are bound to consider the natural frequency of the load cell is able to meet the requirements of dynamic measurement. These parameters in the general introduction of the product is not listed. To understand these technical parameters, they should consult the manufacturer, in order to avoid mistakes.Related recommendation：· Resistance strain gauge load cell· The load cell errors· Small range weighing sensor 651C www.hzloadcell.com

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jbbfvt4112/The-use-of-floor-scale-

The use of floor scale!Floor Scales Direct are good to use in different industries and freight business. The scales can be used as tools to keep exact records of the loads and to offer dependable services to the customers. The company offer wide range of weighing scales and other products that are available for sale. The floor scales in particular are designed to work in tough conditions. User will find the scales useful for different applications like: Receiving platform and warehouse shipping Drum weighing Livestock weight Pallet weighing Different industrial scales for individual industriesThe Square deck scales:The square deck style floor scale is particular product available from the company that has different features and special applications. It is industrial duty-type floor scale that can weigh 500lb of loads. The scale comes with digital indicator, weighing deck and necessary cords and cables. The product gas been certified by NTEP and thus is good to use for industrial purposes. The shock absorbing and self-leveling feet and the top deck with diamond plate are the other important features of the scale. It also comes with a junction box, made of mild steel. There are both numeric keypads and led digits that indicate the measurement.We are a professional manufacturer of load cells, especially the load cell for floor scale is with excellent quality, precision up to OIML C3, OIML C5, NTEP 1: 5000, capacidad incluyen 500lb, 1000lb, 2500lb, 3000lb, 5000lb, 10Klb, 20Klbwww.hzloadcell.com

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jbbfvt4112/Celdas-de-carga-para-balanzas-de-Precision

Tenemos una celdas de carga (célula de carga) especial para balanza precisión (balanza electronica), especial para balanzas de 600g-0.01g, 300g-0.01g, El modelo es 651CO modelo de 651E,651CW-60g, 100g,150g, 200gTodos las celdas son monoceldas, el precisión puede ser OIML C3,OIML C4, OIML C6.www.hzloadcell.com

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jbbfvt4112/column-load-cell-HBM-C16

Which brand can replace column load cell-HBM C16?HUAZHUN-689C-30ton,column load cell, can be interchangeable with HBM C16, it is suitable for truck scalewww.hzloadcell.com

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jbbfvt4112/single-point-load-cell-of-OIML-C6-standard

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jbbfvt4112/Which-load-cell-can-replace-Sensortronics-65058

Which load cell can replace Sensortronics 65058?This load cell is suitable for truck scale, is double ended sharebeam. many load cell can be interchangeable with it, such as Sensortronics 65058,Rice Lake RL75058,Tedea 4158, Huazhun 693Bwww.hzloadcell.com

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jbbfvt4112/Vishay-Tedea-1004-load-cell

The load cell of Vishay Tedea 1004 is especially made for high precision Industry, it is widely used in medical industrial, and precision balance, jewellery scale and electronic balance, the interchangeable models of other brand is:HBM- SPLNMB-BCLHUAZHUN-651Cwww.hzloadcell.com

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jbbfvt4112/How-to-select-a-load-cell-for-precision-balance-

How to select a load cell for precision balance?For precision balance, the creep is most important, so to select a load cell for precision balance(jewellery balance), must chose load cell of high precision creep. Normal OIML C3 standar load cell is not suitable, because creep is not so accurate. OIML C3 only require creep of 0.02%~0.03%, for precision balance, it need at least a creep of 0.01%. 651C-300g, 600g from Huazhun Weighing Technology Co.,Ltd. is widely used in precision balance(electronic balance), for precision balance of 600g/0.01g, normally select 651C-600g 0.01%precision is enough. If need very stable reading, can select 651C-600g 0.005%precisionwww.hzloadcell.com

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jbbfvt4112/Celda-de-carga-de-S-tipo

Huazhun tiene una celda de carga de S tipo, modelo 635A, NTEP1:5000 estandar, que es cambiable con HBM RSC, pero el precio es más competitivo, ustedes puede buscar 635A en Americas.www.hzloadcell.com

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jbbfvt4112/S-type-load-cell

635A: 50kg~10,000kg/100lb~20KlbSpecial features :Equivalent to OIML R60 C3 (Emax 300kg)regulations up to 5 000d for scales class lllSuitable for use under conditions of tension and compressionExplosion proof version (Ex ib II CT4)Protection to IP66/IP67Available Options:-Service temperature range up to 120 [248 ]-6-wire ciruit-Stainless steelwww.hzloadcell.com

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jbbfvt4112/shearbeam-load-cell-for-floor-scale

613A: 100kg~20,000kg /50lb to 40KlbSpecial features:Comply with OIML C3 up to 5000 division class III and NTEP 1:5 000 Class III, multiple cell Low profile and high sensitivity Explosion proof version (Ex ib II CT4) IP67 protection Dimension: less than 2ton: 130*31.8*31.8Interchangeable with Vishay Tedea 3411, Rice Lake RL30000 www.hzloadcell.com

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jbbfvt4112/Column-load-cell-647BS--10-000kg-50-000kg--stainless-steel--OIML-C3-standard

PARAMETER UNIT TECHNICAL DATA Rated capacity (Emax) kg 10,000...50,000 Accuracy class C3Sensitivity mV/V 2.0 ±0.002 Zero balance mV/V1Creep over 30min %0.02Temperature effect on zero %/ 0.004Temperature effect on output %/ 0.0014Nominal temperature range -10 to +40 Service temperature range -40 to +80 Limit load % of R.C. 150Break load % of R.C. 300Nominal excitation V 5~12 Max. excitation V 15Input impedance 700± 7 Output impedance 703 ±4 Insulation resistance M 2000 Cable length M 15Cable type 4 conductors, Braid Shielded, Black PVC Jacket Color code +Exc-Red, +Sig -Grn, -Exc-Blk, -Sig- Wht Construction Stainless steel Protection class to IEC529 IP 68 http://www.hzloadcell.com/pid11486995/Column+load+cell-647BS%3a+10%2c000kg%7e50%2c000kg%2c+stainless+steel%2c+OIML+C3+standard.htm

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jbbfvt4112/S-Type-load-cell-635H--10t-50t-OIML-C3-standard

PARAMETER UNIT TECHNICAL DATA Rated capacity (Emax) kg 5,000...50,000 Accuracy class C3Sensitivity mV/V 2.0 ±10% Zero balance mV/V0.02Creep over 30min %0.02Temperature effect on zero %/ 0.004Temperature effect on output %/ 0.0017Hysteresis % 0.017Linearity deviation % 0.017Repeatability % 0.017Nominal temperature range -10 to +40 Service temperature range -30 to +65 Limit load % of R.C. 150Break load % of R.C. 200Nominal excitation V 5~12 Max. excitation V 18Input impedance 350 ±10 Output impedance 350 ±3 Insulation resistance M 2000 Cable length M 0.5Cable type 4 conductors, Braid Shielded, Black PVC Jacket Color code +Exc -Red, +Sig-grn, -Exc-Blk, -Sig- Wht http://www.hzloadcell.com/pid11486989/S+Type+load+cell-635H%3a+10t%7e50t+OIML+C3+standard.htm

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jbbfvt4112/Column-load-cell-689C--alloy-steel--OIML-C3-standard

PARAMETER UNIT TECHNICAL DATA Rated capacity (Emax) kg 10,000...50,000 Accuracy class C3Sensitivity mV/V 2.0± 0.001Zero balance mV/V1.00%Creep over 30min %0.03NO-linearity%0.03Hysteresis%0.03Temperature effect on zero %/ 0.02Temperature effect on output %/ 0.015Nominal temperature range -10 to +40 Service temperature range -30 to +65Limit load % of R.C. 150Break load % of R.C. 300Nominal excitation V 5~10Max. excitation V 15Input impedance 760 ±10 Output impedance 702 ±3 Insulation resistance M 5000 Cable length M 10,000kg...30,000 12m, 40,000...100,000 20m Cable type 4 conductors, Braid Shielded, Black PVC Jacket Color code +Exc-Red, +Sig -Grn, -Exc-Blk, -Sig- Wht Construction Alloy steel/Stainless steel http://www.hzloadcell.com/pid11486949/Column+load+cell-689C%2c+alloy+steel%2c+OIML+C3+standard.htm

jbbfvt4112

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