Gas Detection (Australia) Pty Ltd
Page 7 of 12
M-3160-003-1 05/12/2017
Relay Switching O/P on Alarm Configuration:
This output will operate a relay that actives when the set alarm point is triggered by an increased gas
concentration. From factory the default set alarm point is 100ppm or set to the value requested by the
user at purchase. The alarm point is user adjustable.
Be cautious when handling the GDA 3160 as there are delicate components that can easily be damaged
by static discharge. Always observe anti static precautions.
Ensure that the alarm enable jumper (Orange) is on JP6.
(
The alarm enable jumper has been factory set to on for ver 5.5
.)
If the "
MUTE
" link (
Purple
) is in it will mute the on board buzzer. If the optional mute button is installed
the on board buzzer can be muted by pressing the button which is located on the front panel (see
location of the mute button in the picture on page 4).
To set the relay activation alarm point:
1. Remove the GDA 3160 from the wall to access the back of the sensor unit;
2. Place a volt meter between test points 1 & 2 (
RED);
3. Adjust “RAlarm” POT (
BLUE
) with a small screw driver, to the calculated voltage corresponding to the
desired alarm point (see formula information below); and
4. Revert to normal operation.
P1
Test point 1 &2 (
RED
)
RAlarm
POT
(
BLUE
)
Normally Closed
Normally Open
MUTE
LINK
(
Purple
)
Common
Alarm Enable
(
Orange
)
