Precision Test Gauges

The best Precision Test Gauge for your high accuracy test/calibration requirements. The 3D Instruments Precision Test Gauge is certified for industrial and laboratory pressure transfer measurement in the U.S. and worldwide.

Incorporating 3D Instruments' well known expertise in test gauge design and application, the Precision Test Gauge provides unsurpassed long term accuracy. The dial face design comes directly from 3D experience with the practical use of high resolution pressure calibration in the laboratory and the field. Utilizing a highly sensitive Ni-Span C bourdon tube , the Precision Test Gauge is virtually unaffected by temperature variations. This obsoletes the need for an expensive add-on temperature compensation device. The bourdon tube material offers a superior spring rate varying only 0.02% from -25 degrees F (-32 degrees C) to +125 degrees F (+52 degrees C). With the 3D Precision Test gauge there is no need for preliminary pressure cycling.
All materials used are selected to be corrosion resistant. All gauges are supplied with a bleed port and bronze bushings are used ensuring low friction and long term precision in extreme applications involving dust, vibration and temperature variation. The gauge dial uses 3D Instruments well known anti-glare soft green with mirror anti-parallax band, and white outer ring for maximum user resolution. This system has proven practical advantages for technicians and engineers. All Precision Test Gauge dials are linear and interchangeable in the field for the same pressure range. The advantage of using a Ni-Span C bourdon tube and the resulting low hysterisis is that the Precision Test Gauges are not individually matched to a non-linear dial. This makes field repair and re-calibration not only a possiblity but a relatively easy task performed with exactness and facility by instrument technicians in real world situations.