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On display
Green
POWER LED
Amber
TROUBLE LED
Red
ALARM LED
1
st
stage gas alarm
ALARM 1
On
Off
Flashing
2
nd
stage gas alarm
ALARM 1
ALARM 2
On
Off
Flashing
A1 and A2 relation in each gas alarm mode
H - H mode (High-High limit alarm)
L - L
mode (Low-Low limit alarm)
H - L
mode (High-Low limit alarm)
2
nd
stage gas alarm: ALARM1 and ALARM2 are lit.
Gas alarm contacts (ZA1, ZA2) activate.
Alarm set value shown as
“A1
**
”.
1
st
stage gas alarm: ALARM1 is lit. Gas alarm contact (ZA1) activates.
Alarm set value shown as
“A2
**
”.
.
25vol
%
Reading in normal ambient air (no gas detected)
21vol
%
0vol
%
Low limit of gas alarm: ALARM1 is lit. Gas alarm contact (ZA1) activates.
Alarm set value shown as
“A1
**
”.
High limit of gas alarm: ALARM2 is lit. Gas alarm contact (ZA2) activates.
Alarm set value shown as
“A2
**
”.
50vol
%
Reading in normal ambient air (no gas detected)
21vol
%
0vol
%
2
nd
stage gas alarm: ALARM1 and ALARM2 are lit.
Gas alarm contacts (ZA1, ZA2) activate.
Alarm set value shown as
“A2
**
”.
1
st
stage gas alarm: ALARM1 is lit. Gas alarm contact (ZA1) activates.
Alarm set value shown as
“A1
**
”.
Full scale
0ppm
Reading in normal ambient air (no gas detected)
NOTE