D12
EX-IR
Gas Transmitter with IR Smart Sensor
Dec 2019 ( 85-0004 Rev A)
33
Trouble Indication
The Trouble alarm is indicated by four dashes appearing on the Main Display,
along with the (!) flag in the lower left corner, and the 4-20mA status icon
indicating that the 4-20mA output is fixed (default = 3.6mA).
Figure 24. Main Display Trouble Indication
Main Display Timeout
Menus and other pages used for configuring the transmitter and sensor return to the Main Display after 5
minutes of no key activity. Exceptions to this behavior include the zero and span calibration pages (30
minutes).
Main Display Alarm Inhibit Method
Holding the magnet over the
ESC
key for 3 seconds, then removing, toggles alarm
inhibit mode. If alarm inhibit was off, it is turned on for 15 minutes (default
value). If alarm inhibit was on, it is turned off, and in addition, the sensor warm
up period is expired immediately (see status indicators above).
P
OP
-
UP
D
ISPLAYS
Sensor Removed Display
Removing the gas sensor causes the Sensor Removed Display to appear (below), which displays a count-
down timer. During this time, alarms are inhibited and the current loop output is fixed at 4.0mA (17.4mA
for Oxygen sensors). A trouble alarm will occur if a sensor is not installed before the timer expires. This
60 second period is usually long enough to reinstall the sensor, or install a replacement, but if more time
is needed, the count may be extended to 5 minutes by selecting “Reset”. Selecting “Exit” forces
expiration of the timer and exits to the Main Display, which will then indicate the Trouble alarm is active
(see Figure 24 above).
Figure 25. Sensor Removed Display
Esc
3s
Sensor Removed
►Reset Exit
00:59
Sensor Removed
%LEL
Methane
MENU
----
Main Display
!