Teledyne 700 IR Series Instruction Manual page 33

From the Set Gas Factor text scroll, hold the 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 Factor"). The display will then switch to "X.XX"(where X.XX is the current gas
factor). Swipe the magnet momentarily over PGM2 to increase or PGM1 to decrease the gas
factor level until the correct value is displayed. Hold the magnet over PGM1 or PGM2 for 3
seconds to accept the new value. The display will scroll "Factor Saved", and revert to "Set Gas
Factor" 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 Gas Factor" 4 times and then
return to Normal Operation).
NOTE 1: The default value for Gas Factor is 1.0. This would be used when the target gas is the
same as the cal gas. Values other than 1.0 would be used when the target gas is different from
the cal gas.
NOTE 2: Gas Factors can be used for both selections of "gas type = CH4" and "gas type = HHC-
Heavy Hydrocarbons".
NOTE 3: The "Set Gas Factor" is not applicable for CO2 versions and should be set to 1.0
3.5.6 Set Serial ID
Teledyne Oldham Simtronics OLCT 700 IR 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).
3.5.7 Set Sensor Gain
Each Teledyne Oldham Simtronics OLCT 700/710 IR combustible hydrocarbon gas detector
requires a one-time gain setting to match the plug-in IR sensor with the ITM electronics. This is set
automatically during the "Set Sensor Gain" sequence. The "Set Sensor Gain" sequence
determines the required gain resistance setting for optimal operation. This technique provides for
uniformity in sensor-to-sensor operational performance.
NP700IRIMEN
Revision E.0
INFRARED GAS DETECTOR FOR COMBUSTIBLE AND CO
700 IR Series
2
GASES
USER MANUAL
27