Owner's manual

3.2 APPLICATION
Model IR-540/IR-541/IR-542 MicroSafe™ sensors are designed to detect and monitor CO
2
gas in ambient air.
Minimum sensitivity and scale resolution is 0.01%. Operating temperature range is -40° F. to +175° F. While the sensor
is capable of operating outside these temperatures, performance specifications are verified within the limit.
3.2.1 Sensor Placement/Mounting
Sensor location should be reviewed by facility engineering and safety personnel.
3.3 SPECIFICATIONS
Method of Detection
NDIR Optical
Electrical Classification
Class I; Groups B, C, D; Div. 1.
Detcon Model IR-540/IR-542 Carbon Dioxide Sensor PG.6
Functional
Block
Diagram
Functional
Block
Diagram
4-20 mA Out
Power In
Pre-Amp Display
4-20mA
Micro-
processor
Transmitter
Power Supply
Optical
Sensor
I/O Circuit
Protection
Temperature
Compensation
0
4
8
1
2
1
6
2
0
20 40 60 80 100
% of Range of Detection
mA DC Signal Output
Output Response Curve