700 IR Series
INFRARED GAS DETECTOR FOR COMBUSTIBLE AND CO
GASES
USER MANUAL
Housing Bottom
Assembly
Splash Guard
1) OLCT 700 IR Intelligent Transmitter Module (ITM). The ITM is a fully encapsulated
microprocessor-based package that accepts a plug-in field replaceable sensor. Circuit
functions include LED display, magnetic programming switches, a linear 4-20mA DC
output, and a Modbus™ RS-485 output. Magnetic program switches allow non-intrusive
operator interface.
2) Field Replaceable Plug-in Infra-Red Gas Sensor
3) Housing Bottom Assembly (contains the Housing Bottom, Flame Arrestor, Retaining Ring,
and rubber O-Rings)
4) Splash Guard.
NOTE: All metal components are constructed from electro-polished 316 Stainless Steel in order
to maximize corrosion resistance in harsh environments.
Program Switch #1
Splash Guard Adapter
Locking Set-Screw
4
Plug-in Replacable
Combustible
Hydrocarbon Sensor
Housing Bottom
O-Rings
Locking Set-Screw
Figure 3: Detector Assembly Breakaway
detcon inc.
OLDHAM
MODEL
IR-700
LEL-LIE-UEG
LEL Sensor
Figure 4: OLCT 700 Assembly Front View
2
Lens and LCD
Display
Intelligent Transmitter Module (ITM)
Magnetic
Micro-Processor controlled circuit
Programming
encapsulated in an explosion proof
Switches
housing.
LED Display
Program Switch #2
NP700IRIMEN
Revision E.0