Transducer for measuring low-differential pressure

April 19, 2017
Written by Staff
Setra’s Model ASL is the highest accuracy transducer for measuring low-differential pressure in the AccuSense product line.

Its ±0.07 per cent FS accuracy is calibrated using the “End Point Method” which improves linearity when compared to competitive transducers, which use the “Best Fit Straight Line Method” of calibration. The ASL’s calibration is tamperproof by utilizing a SecureCal calibration key, which eliminates inadvertent adjustments, while allowing authorized users to adjust the sensor’s calibration coefficients for a true sensor calibration.

The design of the ASL offers class leading overpressure capability and multiple pressure and electrical fittings to accommodate a wide range of applications. The Model ASL uses a resonant variable capacitance sensor. This sensor is linearized and thermally compensated through a computerized curve-fitting algorithm that optimizes the sensor’s linearity for maximum accuracy in demanding applications. It is also designed and built to withstand demanding applications. The laser welded sensor construction, designed with positive and negative overpressure stops, enables the sensor to resist overpressure conditions up to100X in all pressure ranges.

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