New Cosmos Electric KS-7D, Instruction Manual

Page: 20 / 40

- 18 -
7-4-3. Zero Adjustment [Mode 2]
1) Enter the User mode. Press the
▲
/
▼
button to
select
“2”. (each press of the button is followed by
one beep)
“0ppm” and “2” will be alternately
displayed
2) Press the maintenance button. (one beep)
The current CO concentration (ppm) will be
displayed.
3) Check that there is no gas present. Press and
hold the maintenance button for 3 seconds to start
a zero adjustment. (beep pattern:
short-long-short-short)
“0ppm” and “2” will be alternately displayed,
indicating that the zero adjustment is complete.
7-4-4. Span Adjustment [Mode 3]
1) Press the
▲
/
▼
button to select
“3”. (each
press of the button is followed by one beep)
“*** ppm” (span adjustment concentration)
and
“3” will be alternately displayed.
▪
Perform a zero adjustment in clean air that is free from target gas or interfering gases.
▪
Proper gas detection is not possible without a correct zero adjustment
CAUTION
▪
Mode 3 (span adjustment mode) is for manufacturer use only. For span adjustment,
contact your New Cosmos representative (fees apply). Proper gas detection is not
possible without a correct span adjustment.
CAUTION
(Ex.Current concentration
is 3ppm)
(Ex. Span adjustment concentration is 400ppm)