Crowcon Tetra MO7237, User Manual, Page: 7 / 36

Tetra warm up sequence
a) The unit will test the
alarm LEDs, sounder,
vibration alerts, and
the operator display
screen. The sounder
may be silenced by
pressing the button.
b) The unit will continue through a warm up sequence as shown below,
this will take approximately 45 seconds.
c) Auto zero
If auto zero is enabled (default), the unit will display the auto zero
menu. Press the operator button with a single click to confirm auto
zero. If the operator button is not pressed within the 10 second time
out, Tetra will proceed directly to Run mode without performing zero.
Tetra Quickstart guide
LEDs Alarm test
Vibrator Alarm test
Sounder Alarm test
Tetra
vs. 1.01
AUTO ZERO?
Click to
confirm
in 7 secs
i
CH4 %LEL CO ppm
H2S ppm O2 %
!
CROWCON
Tetra
Gas Detection You ..
TODAY IS
Wed
14-May-2003
14:02:49
i
NEXT CAL
21-Aug-2003
i
1-2 m
AUTO ZERO?
Click to
confirm
in 7 secs
i
CH4 %LEL CO ppm
H2S ppm O2 %
0.0
0.0
0
20.9
No auto zero
Auto zero
OK
AUTO ZERO
0.0
CH4
H2S Co
O2
AUTO ZERO
0.0
CH4
H2S
Co
O2
Run mode