The Columbia Models SA-120R and SA-120RNP Force Balance Accelerometers have been designed as Measurement While Drilling (MWD) sensors for use in downhole well service applications. These sensors are completely self-contained and require no additional signal conditioning.
The Models SA-120R and SA-120RNP Accelerometers are extremely rugged and will survive severe shock and vibration exposures. The Model SA-120RNP provides optimum accuracy and repeatability in high temperature environments up to +125 degrees C. Refer to Columbia Model SA-120RHT for extreme high temperature applications up to 200 degrees C. Consult the factory for customized versions of these sensors.
|Output Impedance||<5000 Ohms|
|Ranges Available||+1 G To +10 G|
|Output Voltage||+5 Volts into 100K Load|
|Excitation||+15 VDC <20 mA|
|Sensitive Axis Alignment||Better Than 0.5 Deg|
|Scale Factor Tolerance||+1%|
|Scale Factor Temp Coefficient||0.025% / Deg C Max.|
|Zero Bias||+0.1% F.R.|
|Current Output||0.001% F.R./ Deg C|