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9.1 RTD RESISTANCE MEASUREMENTS
The 1604 monitor is capable of displaying the real time DC
resistance of the RTD element for diagnostics purposes.
The keyboard must be connected to the monitor for the
measurements. Select the F12 key and navigate to the RTD
ID address, then page down to its alarm temperature display
screen. Select Cntl + F/C on the keypad to read the RTD
resistance based on its sensor temperature. For diagnostics
purposes, an accurate resistance decade box can replace
the RTD to read ohms on the display. Refer to page 26 to
cross a resistance input to a temperature reading.
9.2 MAXIMUM RESISTANCE MEASUREMENTS
The chart below indicates the maximum resistance in ohms
that the monitor is capable of reading.
9. RTD SENSOR DIAGNOSTIC MEASUREMENTS
Example - reading resistance of con-
nected RTD, Platinum #8
* RTD
1
ALARM *
SET POINT: 32 ° F
RTD READS: 100 OHM
F1-CHNG PGU/D-NXT
NICKEL 1
396
NICKEL 7
792
PLATINUM 8
396
PLATINUM 11 396
COPPER 15
50
Summary of Contents for EDISON ONGUARD 1604
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