User manual

CO-220 English Instruction Sheet
Page 2
W Safety Information - Read First
⇒ Do not use the Meter as a personal safety monitor.
⇒ Learn and recognize the effects of CO poisoning.
0-1 PPM Normal background levels.
9 PPM ASHRAE Standard 62-1989 for living areas.
50 PPM OSHA 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 Labor, 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 %).
What the Meter Does
The Meter indicates the presence of CO by a reading on the LCD
and a beeper tone.
Above 1000 PPM, the LCD reads “OL” to indicate an out of range
condition.
The beeper functions much like clicking of a Geiger counter:
• The higher the concentration of CO, the faster the beeper
sounds.
• Above 200 PPM, the beeper sounds continuously, while the
frequency of the tone increases with the concentration of CO.
Turning the Meter On
Install the battery. (See “Installing and Replacing the Battery.”)
To turn the Meter on, press the green button.
The Meter beeps twice, then performs a self-test. During the self-
test, the display counts down from “10” to “0”, while the Meter
emits a series of 2 beeps followed by a pause.
If the Meter passes the self-test, the Meter begins monitoring,
which is indicated by a beep every two seconds, and shows a
reading on the display.