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CALIBRATIONS
To achieve high accuracy in sensors, calibration is a critical
element. Calibration of a quartz transducer can stay valid for
years, allowing down-hole tools to spend less time being serviced
and more time providing value in the field. When developing
a re-calibration protocol, the best approach is to re-calibrate
only the transducers that demonstrate need for it. See our  technical note
for more details.
Quartzdyne Calibration information
Pressure:
- Pressure is generated with precision automatic and manual
dead weight testers with .0.01% reading.
- Sensor hysteresis is looked at by stepping up to full
scale and then stepping down to ambient.
- Pressure drift is analyzed by full scale soaking both before and after calibration.
Temperature:
- All downhole transducers are calibrated in stirred oil
baths that are stable and uniform to .01°C.
- Each pressure step causes PV heating or cooling. This event must be allowed
time to decay before readings are made.
- Sub-sea and surface units are calibrated in refrigerated ovens.
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