During load cell calibration, a device with a standard measurement is attached to the transducer. Its reading is compared to the reading of the load cell; ideally, both the calibrating device and the transducer will have the same measurement. If not, the operator makes the necessary changes and adjustments before measuring again to ensure that the values are identical. Read More…
Leading Manufacturers
Strainsert Company
West Conshohocken, PA | 610-825-3310For over 40 years, Strainsert Company has been an industry leader in manufacturing calibration services. Our goal is to provide calibrating services that are thorough and accurate, and we have experience serving a variety of applications. Our team of engineers can find a solution to your application, no matter how stringent your demands. Contact us today and let us know how we may assist you.
AALFA-KAL Metrology Laboratory
Orangeburg, NY | 845-770-3000AALFA-KAL Metrology Laboratory, division of Aalborg Instruments & Controls, offer calibration services on meters and controllers on various products. Our laboratories are fully equipped to perform NIST traceable flow calibrations for rotameters, mass flow meters and mass flow controllers. We can also calibrate NIST traceable approved “in-house” equipment to certify our primary calibration devices.
Graftel LLC
Elk Grove Village, IL | 847-364-2600Graftel maintains a complete calibration lab for gas flow, liquid flow, air velocity, RH/dew point and temperature. Calibration work is accredited to ISO 17025 and performed in compliance with ANSI/NSCL Z540-1-1994 requirements. Laboratory equipment is maintained in accordance with MIL-STD-45662A.
Caltech Service Corp.
North Olmsted, OH | 440-343-4024Caltech Service is a service company committed to customer satisfaction. We are an ISO 17025 accredited calibration service. All of our service technicians have over 30 years experience in the temperature process calibration field. By providing regularly scheduled service, we develop a detailed knowledge of a customer's control process, responding with expertise to any potential control problem.
Micro Precision Calibration Inc.
Grass Valley, CA | 530-268-1860Micro Precision develops and maintains calibration services and repair services that assure levels of accuracy for your T & ME and gage blocks to high-end electronics. We also have a calibration laboratory, software and pressure calibration to meet your needs. IS0 9001:2000, ISO 17025, NIST Traceability.
Precision Calibration Systems
Morristown, TN | 866-521-3823Total customer satisfaction is our promise here at Precision Calibration Systems. If you’re looking for fast and accurate calibration services, you’ve come to the right place. The scope of our capabilities includes analytical balance, caliper, digital thermometer, electrical measure, electrical source, hardness testers, micrometers and so much more. Contact us today!
Load Cell Calibration - Strainsense Enterprises, Inc.This process of calibration is important because accurate and precise readings from the load cell are important and vital to its proper functioning. An incorrect measurement of the electrical signal may be a safety hazard or could lead to equipment damage. Load cells are generally part of larger systems so other decisions are made based on the reading provided by the transducer which is why they must be checked and calibrated regularly.
Regular calibration also maintains quality standards. Calibration is used not only for load cells but with a wide range of equipment and machines as well as for pressure, speedometers, temperature and torque. Load cells are frequently used for large scale weighing in hoppers, for trucks, tank level, in-line force measuring and weighing research.
Load cells are available in a variety of styles including S-beam, platform and single point, low profile, compression, compression/tension, bending beam and canister. Some are designed to read the force acting on a button while others have larger parts that are bent; all rely on the physical deformation of strain gauges.
As force is applied to the load cell, a strain gauge is bent. The strain is converted into electrical signals, which are amplified; typically one load cell will have at least four strain gauges. The output is then entered into an algorithm to calculate how much force was applied to the transducer. The gauge inside has a spring-like quality that allows it to bounce back after a load is applied. If the loads are changed abruptly, the gauge may vibrate quickly, a consequence called ringing.
During calibration, a certain load with a known exact weight is placed on the load cell. Like other devices that must be periodically calibrated, the load cell is designed to accept calibration by conducting measurements that are within engineering tolerances when used over time in certain environmental conditions. If the load cell has a flawed design then no amount of calibration can correct it.