GD-70D
- 57 -
7
Alarm Test Mode
Alarm Test Mode generates dummy signals that imitate gas concentration signals in order to check the
alarm LED activation and the transmission to external circuits.
Be sure that the
TEST RLY
and
TEST4-20
items in Maintenance Mode are set appropriately.
7-1
Alarm Test Mode
PW
A1
A2
F
LCD
Detection Mode
Press the TEST key for three seconds.
●
○
○
○
0.0ppm
SIH4
↓
↓
Alarm Test Mode
"TEST ON" is displayed when the alarm
contacts will activate during the alarm
test. "TEST OFF" is displayed when the
alarm contacts will not activate during
the alarm test. (The setting can be
changed in the
TEST RLY
menu item in
Maintenance Mode.)
Increase or decrease the reading by
pressing the
▲
or
▼
key.
●
○
○
○
0.0ppm
TEST OFF
MAINTENANCE
↓
↓
First Alarm
When the reading reaches the first
alarm, the ALM1 lamp lights up. (When
TEST RLY
is set to
ON
, the first alarm
contact is activated.)
●
○
○
○
5.0ppm
TEST OFF
MAINTENANCE
↓
↓
Second Alarm
When the reading reaches the second
alarm, the ALM2 lamp lights up. (When
TEST RLY
is set to
ON
, the second
alarm contact is activated.)
●
○
○
○
10.0ppm
TEST OFF
MAINTENANCE
↓
WARNING
•
Before starting the alarm test (transmission test), prepare for false alarms by disabling alarms or
alerting appropriate personnel.
•
After the test is completed, do not forget to press the TEST key to return to Detection Mode.
(If the detector remains in the alarm test mode, it automatically returns to Detection Mode in ten
hours.)
