Detcon 700 Series Remote Sensor/Alarm Relay Module With HART Interface - Manual (Page 22)

700 HART-RAM I.M.
TP
• Heater Power
• Heater Voltage
• Sensor Resistance
• Heater Current
• Sensor Life
Note: The values above are read when the HART-RAM boots up and are not updated in real-time.
6.3.2 Calibration
The Calibration screen displays the days since the last calibration, and the auto span level. This screen also
allows the user to calibrate the sensor by performing an Auto Zero Calibration and an Auto Span Calibration.
Calibration of the sensor using this feature also notifies the Host that the sensor is in calibration mode.
Figure 14 FP Calibration Screen
6.3.2.1 Sensor Calibration using the HART-RAM
Calibration of a sensor using the HART-RAM follows the same principle as calibrating the sensor via the
magnetic interface. Since most of the calibration information can be found in the associated sensors manual,
it is important to have the sensor manual on hand when performing sensor calibration.
Each sensor type has different criteria that need to be met before calibration of the sensor should be
performed. Refer to the appropriate sensor manual for specific information on gas to be used, flow rates,
interference gas, cross calibration gas, and other sensor specific criteria.
NOTE: The TP sensor does not perform an Auto Zero function. Although the menu may provide this
option, the test is invalid, and is not performed.
700 HART-RAM I.M. Rev. 0.0 Page 18 of 24