Detcon TP-700 - Manual (Page 24)

Model TP-700
TP-700 Instruction Manual Rev. 3.5 Page 20 of 38
Hold the magnet over PGM1 or PGM2 for 3 seconds to accept the new value. The display will scroll “Range
Saved”, and revert to “Set Range” 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 Range” 7 times and then return to Normal Operation).
NOTE: When switching between ranges, it may be necessary to readjust the AutoSpan Level.
3.5.5 Set Serial ID
Detcon Model TP-700 sensors 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.
The menu item appears as: “Set Serial ID”.
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. This function is
performed during factory calibration of each TP-700 sensor assembly, and is not necessary during installation.
However, it is necessary to perform in the field if the plug-in H
2
S sensor is replaced or if the Restore Factory
Defaults function has been executed.
The menu item appears as: “Set Heater Power”.
NOTE: “Set Heater Power” is only necessary after new plug-in H
2
S sensor installation or after
use of the “Restore Factory Defaults” function. A full 3-4 second magnet hold on PGM1 or
PGM 2 is required to execute this function.
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 ITM will adjust the Heater power. The
sequence should require about 2-minutes. When the cycle is complete, the ITM will revert to the “Set Heater
Power” text scroll.
NOTE: If the ITM cannot adjust the heater power within 3 minutes an error message, “Can’t
set, Reverting to Default”, will be scrolled. Refer to section 6 Troubleshooting Guide.