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Carbon Monoxide Sensor

Automated Logic’s Carbon Monoxide Sensor offers enhanced electrochemical sensing with outstanding accuracy at low concentrations. This unit features a ventilated Box and is ideal for parking ramps, equipment rooms and warehouses.

The sensor has field selectable CO ranges of 0 to 100, 0 to 200, 0 to 300 and 0 to 500 ppm. It also has field selectable outputs of 0 to 5, 1 to 5, 0 to 10, 2 to 10 VDC and 3-wire 4 to 20 mA output. The large LCD is backlit for 10 seconds after any button push.

Two independent SPDT alarm contacts switch at field selectable CO concentrations of 25, 35, 50, 100 and 200 ppm. An alarm timer can hold the output relays on for one to ten minutes after the CO level has fallen below 80% of setpoint. This allows additional fan run time to be sure that the CO has been purged.

The field replaceable sensor element lasts approximately 7 years and is self tested daily.

PART NUMBER AND DESCRIPTION
Part Number Description
NSB-CO-V-BB-A Rough Service Carbon Monoxide Sensor in a Ventilated Box
NSB-COS-A Factory Calibrated Replacement CO Module
SPECIFICATIONS
Sensing Element Accuracy: <200ppm = ±3% FS, 32 to 122°F (0 to 50°C)
201 to 500 ppm = ±5% FS, 50 to 122°F (10 to 50°C)
Field Selectable Ranges: 0 to 100, 0 to 200, 0 to 300, and 0 to 500 ppm
Power Supply: 18 to 28 VAC, 7.2 VA Max
18 to 40 VDC, 180 mA Max
Alarm Relays: 2 Independent, Dry SPDT (Form C)
2 Amps at 24 VAC/DC, Resistive
140 VA Inrush, 48 VA Holding at 24 VAC
Environmental Operating Range: 14 to 122°F (-10 to 50°C)
5 to 95%RH Noncondensing
Field Wiring Terminals: Pluggable Screw Terminals, 14 to 24 AWG
Response Time: <80 seconds from 10% to 90% of range
Alarm Relay Setpoints: 25, 35, 50, 100 or 200 ppm
Alarm Timer: 0, 1, 5 and 10 minutes
Sensor Element Life: 7 years typical
Field Selectable Outputs: 3-wire 4 to 20 mA
0 to 5, 1 to 5, 0 to 10, 2 to 10 VDC
Certifications: RoHS and CE
Part Number Description
NSB-CO-V-BB-A Rough Service Carbon Monoxide Sensor in a Ventilated Box
NSB-COS-A Factory Calibrated Replacement CO Module
Sensing Element Accuracy: <200ppm = ±3% FS, 32 to 122°F (0 to 50°C)
201 to 500 ppm = ±5% FS, 50 to 122°F (10 to 50°C)
Field Selectable Ranges: 0 to 100, 0 to 200, 0 to 300, and 0 to 500 ppm
Power Supply: 18 to 28 VAC, 7.2 VA Max
18 to 40 VDC, 180 mA Max
Alarm Relays: 2 Independent, Dry SPDT (Form C)
2 Amps at 24 VAC/DC, Resistive
140 VA Inrush, 48 VA Holding at 24 VAC
Environmental Operating Range: 14 to 122°F (-10 to 50°C)
5 to 95%RH Noncondensing
Field Wiring Terminals: Pluggable Screw Terminals, 14 to 24 AWG
Response Time: <80 seconds from 10% to 90% of range
Alarm Relay Setpoints: 25, 35, 50, 100 or 200 ppm
Alarm Timer: 0, 1, 5 and 10 minutes
Sensor Element Life: 7 years typical
Field Selectable Outputs: 3-wire 4 to 20 mA
0 to 5, 1 to 5, 0 to 10, 2 to 10 VDC
Certifications: RoHS and CE
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