CO Guard
CO-GUARD is a compact, easy to install and operate compressed airline carbon monoxide monitor that meets OSHA monitoring requirements for Grade D breathing air. The instrument is specifically designed for trouble-free operation, utilizing an electrochemical carbon monoxide (CO) sensor with a life expectancy of up to three years. The CO-GUARD is supplied with a regulator assembly and five foot sample hose, and is factory pre-calibrated.
CO-GUARD is designed for use in a wide variety of applications ranging from automotive paint spray operations to wood finishing. This monitor can be used in virtually any commercial or industrial process that requires carbon monoxide monitoring of compressed breathing air for personnel working in such operations.
Standard Features
Meets OSHA 1910.134 compressed breathing air monitoring requirements
- Continuous carbon monoxide monitor for compressed breathing air
- Proven electrochemical sensor technology
- Simple push button operation
- Easy to install compact design
- User programmable alarms and high capacity relays
- Low maintenance field replaceable sensor
- Display: High-contrast, backlit
- Resolution: 1 ppm
- Alarms: Visual Gas Alarm: 3 red LEDs
Visual Power Fault: Green/Red LEDs
Audible Alarm: 105 dB at 30 cm (12 inches) - Operating Power: 110 VAC, 220 VAC and/or 24 VDC, 15W
- Power Connection: Supplied with strain relief for 0.20 to 0.35 inch diameter cable
- Outputs: Relays: 4 Form C, 10A SPDT contacts, 3 gas alarms and 1 fault
Analog: 4-20mA
Digital: RS-485 COM port interface using Modbus RTU
- Sensor: Electrochemical
- Response Time: t90 = 30 sec
- Accuracy: +/- 10% of reading
- Temperature Range: 32° to 104° F (0° to +40° C)
- Inlet Air Line Connection: 1/4 inch NPT female
- Air Line Sample Hose to Monitor: 5 foot length
- Inlet Pressure: 60 to 150 psi, air supply lines, 55 psi regulated to monitor
- Enclosure: Polycarbonate
- Dimensions: 7.1 W x 6.1 H x 3.5 D inches (18.2 W x 15.5 H x 8.9 D cm)
- Weight: 2 lbs (0.9 kg)
STANDARD CALIBRATIONS
- Range: 0-50 ppm CO
- Alarm Levels:
- Alarm 1: 5 ppm CO, user adjustable
- Alarm 2: 10 ppm CO, user adjustable
- Alarm 3: 20 ppm CO, user adjustable
- Alarm Adjustment: All three alarms are user adjustable between 1 to 50 ppm
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