4.6
Table 4.4 Gfx sensor low and high calibration
L MENU to obtain top level menu
CALIBRATE/SETUP
ALARMS/FAULTS
L ENTER
MANUAL CAL
AUTOCAL
L ENTER
ENTER PASSWORD
0000
To change the value of a digit L >
or ?
To change to another digit L = or <
When the number shown is correct
L ENTER
CALIBRATE
I1 CO vpm
8
To select desired gas sensor
module L > or ?
then L ENTER.
If only one module is fitted this
section will be omitted.
LOW CAL/HIGH CAL
HISTORY/CHK L&H
L ENTER
(*)
I1 LOW TARGET
CO 000.00vpm
Change the number to the
concentration of CO in the
calibration gas.
To change the value of a digit
L >
or ?
To change to another digit L = or <
When the value shown is correct L
ENTER
LT00.00 LC00.04
I1 CO OK?
Y/N
LT is the target concentration.
LC is the current concentration eg.
Introduce low cal gas, when the
current concentration has stabilised
it may be accepted (**)
L ENTER
or rejected
L < ENTER.
LOW CAL IN PROGRESS Temporary message.
CAL RESULT
LT 00.00 LC 00.00
The reading following calibration is
displayed for 1 minute (***). L
QUIT to obtain next menu.
LOW CAL/HIGH CAL
HISTORY/CHK L&H
The low point cal is now complete,
either
L MEASURE to go to
measurement display or
L ENTER to repeat the low point
calibration
L < ENTER to continue with a high
point calibration (*)