K-Patents PR-23 - Manual (Page 44)

36 PR-23 instruction manual
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DTR V1 gives the voltage from the power module, the nominal value is 24V.
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DTR V2 gives the DC supply voltage, the nominal value is 3.3 V.
Note: The Slope display also has a soft key SENSOR RESTART which can be used to restart
the current sensor (see upper left corner of the display for sensor letter) after a sensor
software update.
5.4.4 Temperature measurement
The system contains three different temperature measurements displayed to the left
of the graphs in Figure 5.8:
TEMP is the process temperature used for automatic temperature compensation in the
Indicating transmitter (Section 6.6, “Calibrating the concentration measurement”).
HD TMP measures the temperature on the Sensor processor card PR-10100 (Figure 2.1).
DTR TMP measures the temperature on the Motherboard of the Indicating transmitter
(Figure 3.7, “Motherboard of the Indicating transmitter for AC power”).
Both sensor head temperature and DTR temperature are monitored by the built-in
diagnostics program, see Sections 8.1.8, “Message
HIGH SENSOR TEMP ”, and 8.1.9, “Message
HIGH TRANSMITTER TEMP ”.
5.4.5 Sensor head humidity
The Sensor processor card contains also a humidity sensor. The value HD HUM is the
relative humidity inside the Sensor. It is monitored by the diagnostics program, see
Section 8.1.7, “Message
HIGH SENSOR HUMIDITY ”.
5.5 Sensor verification
A company maintaining quality system according to ISO 9000 quality standards must
have defined procedures for controlling and calibrating its measuring equipment.
Such procedures are needed to demonstrate the conformance of the final product
to specified requirements. For the recommended verification procedure, please see
Chapter 13.