CO75 Carbon Monoxide (CO) Meter
User Guide
1 Introduction
This CO Meter detects Carbon Monoxide (CO) from 0 to 1000 parts per
million (PPM)
2 Safety
Information-Read
First:
· Do not use the Meter as a personal safety monitor
· Learn and recognize the effects of CO poisoning
0-1PPM
Normal background levels.
9 PPM
ASHRAE Standard 62-1989 for living areas.
35 PPM
HSE enclosed space 8-hour average level.
100 PPM
OSHA exposure limit.*
200 PPM
Mild headache, fatigue, nausea and dizziness.
800 PPM
Dizziness, nausea and convulsions.
Death within 2 to 3 hours.
*U.S. Department of Labour, Occupational Safety & Health
Administration (OSHA) Regulation 1917.24: The CO content in any
enclosed space shall be maintained at not more than 50 PPM (0.005%).
Remove employees from enclosed space if the CO concentration
exceeds 100 PPM(0.01%).
3 What the Meter Does:
The Meter indicates CO levels on its’ LCD display and by a beeper.
The beeper clicks like a Geiger counter and changes depending on the CO
level:
- From 0 to 34 PPM, the meter makes no sound
- From 35 to 200 PPM, the beeper sounds discontinuously
- Above 200 PPM, the beeper sounds continuously
