Detcon TP-524D - Manual (Page 23)

Model TP-524D
TP-524D Instruction Manual Rev. 0.5 Page 19 of 36
Set Range is used to change full-scale ranges. This is selectable between 0-20, 0-50, and 0-100ppm. The
current range can be viewed in View Sensor Status using instruction given in Section 3.5.1 View Sensor
Status.
The menu item appears as: “Set Range”.
From the “Set Range” 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 Range”). The display will then switch to “XXX“(where XXX is the current Range). Swipe the magnet
momentarily over PGM2 to increase or PGM1 to decrease the range Level until the desired range is displayed.
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.
3.5.4 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-524D 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, mounted
remotely from the Transmitter Module, 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,
mounted remotely from the Transmitter Module, 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 sensor will adjust the Heater power. The
sequence should require about 2-minutes. When the cycle is complete, the display will revert to the “Set
Heater Power” text scroll.
NOTE: If the sensor cannot adjust the heater power within 3 minutes an error message, “Can’t
set, Reverting to Default”, will be scrolled. Refer to section 5 Troubleshooting Guide.
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).
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 240 ± 5mW. At the operating temperature
extremes the observed heater power settings will vary according to the data below:
50C normal heater power range is 210 ± 5mW
0C normal heater power range is 260 ± 5mW
-20C normal heater power range is 275 ± 5mW
-40C normal heater power range is 290 ± 5mW