Deadweight testers use known, traceable weights and a precision machined piston and cylinder assembly to check the accuracy of pressure gauges, sensors, transmitters and transducers.
The unit under test is hooked up and the weights, which correspond to specific pressures, are added to the top of the piston assembly while a pump generates pressure from the bottom ultimately
creating a balance between the force made by the weights and the force made by the pressure. Once balance has been achieved the exact pressure is determined by the amount of weight used.
That pressure is compared to the pressure shown on the unit under test and corrections can be made.
No other type of pressure calibration equipment can match the stability, repeatability and accuracy of deadweight testers. As they rely on weight to calculate pressure, they are considered to
be primary standards and are accepted world-wide as the most accurate measurement of pressure.
Questions to Consider When Buying a Pressure Calibrator:
- What devices are to be calibrated?
- What level accuracy is required?
- What pressure range is required?
- Where will calibrations be performed? In a lab? The field?
- Do calibrations need to be traceable to NIST or another organization?
- What fitting, hoses, adaptors and other accessories are needed?
If you have any questions regarding pressure calibrators please don't hesitate to speak with one of our engineers by e-mailing us at sales@instrumart.com or calling 1-800-884-4967.
