Martel Electronics BetaGauge 321A - Manual (Page 15)

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2.4.8 Setting the RTD probe type
Use the PROBE TYPE option of the RTD Probe Type main menu to access the RTD
Probe selection menu.
There are four probe types to select from P100-385, P100-392, P100-JIS and CUSTOM.
Use the SELECT option to select the desired probe type and the DONE option to store
the change and return home.
Note: The default probe type is PT100-385.
2.4.9 Damping
Damping can be turned ON or OFF using the Damping menu selection. When damping
is ON, the calibrator displays an running average reading of ten measurements. The
calibrator makes approximately 3 readings per second.
3. Measuring Pressure
To measure pressure, connect the calibrator using an appropriate fitting. Choose a
pressure setting for the display being used. The calibrator is equipped with two internal
sensors and many optional external sensors (EPMs) are available. Be sure to choose the
sensor based on working pressures and accuracy.
Note:
Pressure sensors may be damaged and/or personnel injury may occur due to improper
application of pressure. Please refer to the table of ranges and resolutions at the back of
this manual for information on overpressure and burst pressure ratings. Vacuum should
not be applied to any gauge pressure sensor. The calibrator display will indicate “OL”
when an inappropriate pressure is applied. If “OL” is observed on any pressure display,
the pressure should be reduced or vented immediately to prevent damage or possible
personnel injury. “OL” is displayed when the pressure exceeds 120% of the nominal range
of the sensor or when a vacuum in excess of 2 PSI is applied on gauge range sensors.