OLCT 700/710 TP
Page 22 of 45
Rev. C.1
OLCT 700/710 TP Instruction Manual
3.5.5
Set Serial ID
Oldham OLCT 700/710 TP detectors can be polled serially via RS-485 Modbus™ RTU. Refer to Section
4.0 for details on using the Modbus™ output feature.
Set Serial ID
is used to set the Modbus™ serial ID address. It is adjustable from 01 to 256 in hexadecimal
format (01-FF hex). The current serial ID can be viewed in View Sensor Status using the instruction given
in Section 3.5.2 View Sensor Status.
From the “
Set Serial ID”
text scroll, hold the programming magnet over PGM1 or PGM2 until the “◄”
prompt appears and continue to hold the magnet in place for an additional 3-4 seconds (until the display
starts to scroll “Set ID”). The display will then switch to “XX“ (where XX is the current ID address).
Swipe the magnet momentarily over PGM2 to increase or PGM1 to decrease the hexadecimal number until
the desired ID is displayed. Hold the magnet over PGM1 or PGM2 for 3-4 seconds to accept the new
value. The display will scroll “ID Saved”, and revert to “Set Serial ID” text scroll.
Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic
timeout of about 15 seconds (the display will scroll “Set Serial ID” 5 times and then return to Normal
Operation).
3.5.6
Set Heater Power
Set Heater Power is used to set the each H
2
S sensor to the optimum operating temperature.
NOTE
: The function is performed during factory calibration of each OLCT 700/710 TP
detector assembly, and is not necessary during installation. However, it is necessary to perform
in the field if the plug-in H2S sensor is replaced or if the Restore Factory Defaults function has
been executed.
From the “Set Heater Power” text scroll, hold the programming magnet over PGM1 or PGM2 until the
“◄” prompt appears and continue to hold the magnet in place for an additional 3-4 seconds (until the
display starts to scroll “Setting Heater”). After scrolling “Setting Heater”, the detector will adjust the
Heater power. The sequence should require about 2-minutes. When the cycle is complete, the OLCT
700/710 will revert to the “Set Heater Power” text scroll.
NOTE
: If the OLCT 700/710 cannot adjust the heater power within 3 minutes an error
message, “Can’t set, Reverting to Default”, will be scrolled. Refer to section 0
Troubleshooting Guide.
The current values for heater power and heater voltage can be observed in the “View Sensor Status” menu.
The target heater power setting at 25C operating temperature is 235 +/- 5mW. At the operating temperature
extremes the observed heater power settings will vary according to the data below:
Temperature
(in °C)
Heater Power
(+/- 5 mW)
50
215
0
260
-20
275
-40
295
Move to another menu item by executing a momentary hold, or, return to Normal Operation via automatic
timeout of about 15 seconds (the display will scroll “Set Heater Power” 4 times and then return to Normal
Operation).
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