Auto-Back-Light; Automatic Power-Off - Fluke CO-220 Instruction Sheet

CO-220 English Instruction Sheet
Page 3
Self-Test
The Meter tests the sensor and the battery each time it is turned
on and continuously monitors the battery. If the battery is low,
M is shown on the LCD.
If battery power is below the level required to power the Meter, or
if the sensor fails, the Meter emits a series of five beeps, followed
by a long pause, and another series of five beeps. The Meter
then turns itself off.
If after replacing the battery, the alarm condition persists, the
sensor may have failed. Contact an authorized Fluke service
center for information on how to replace the sensor.
Establishing a Baseline
Before testing for CO, establish a baseline against which the
Meter compares other environments.
Do this by turning on the Meter. If the Meter detects between
0-3 PPM of CO, the beeper sounds and the Meter establishes a
new baseline.
If the Meter detects more than 3 PPM, it does not establish a new
baseline, but starts taking CO measurements.
Storing Maximum Readings (Max/Hold)
In the Max/Hold mode, the Meter stores the maximum CO level it
has detected.
In this mode, the Meter continuously monitors the level of CO,
which is indicated by the beeper, while displaying only the
highest level detected on the LCD.
To enable or disable the Max/Hold mode, press the MAX button;
the beeper emits two quick tones when the Max/Hold mode is
enabled and disabled. When the Max/Hold mode is enabled,
"MAX" is shown on the LCD.

Auto-Back-light

If the ambient light is too low (making the LCD difficult to read),
the LCD back-light automatically turns on. The back-light
automatically turns off when sufficient light is present.

Automatic Power-Off

The Meter automatically turns itself off after 20 minutes.