5ppm exit – ENMET EX-5175-EC User Manual
Page 9
EX-5175-EC
ENMET Corporation
7
5.0 Maintenance of the EX-5175-EC
C
AUTION
:
Do not open the
EX-5175-EC
S/T
in a classified area.
C
AUTION
:
Do Not Attempt A Span Procedure Without Calibration Gas Applied to The Sensor; if this is done, the S/T is forced
into a calibration fault mode.
Magnetic switches control the
M
ENU
and
S
ELECT
functions. The
M
ENU
and
S
ELECT
switch locations are indicated on the
display panel, see Figure 3. The
M
ENU
switch is used to display the various menu options and make incremental changes to
numbers such as alarm points, calibrations gas, etc. The
S
ELECT
switch is used to select that option, set zero or span digit.
Most maintenance functions are controlled by simple taps of the supplied magnet on the transmitter glass, below the
M
ENU
and
S
ELECT
boxes on the front panel.
5.1 Maintenance Menu
To enter the maintenance menu hold the magnet over the
M
ENU
switch for 2 to 4 seconds
Table 1 indicates the maintenance menu sequence see Figure 5 for a detailed maintenance menu flow chart.
Table 1: EX-5175-EC maintenance Menus Sequence
Example of Display
Function
Normal Display Mode
Measurement of target gas
Hold the magnet over
M
ENU
switch for 2 – 5 seconds to enter the Maintenance Menu
The Power/Fault LED will flash Green – Red to indicate the
EX-5175-EC
is in Maintenance Mode
To exit the maintenance Menu and return to the Normal
Display Mode:
If intended function Tap the magnet over
S
ELECT
switch
Tap the magnet over the
M
ENU
switch to advance to the Zero procedure
For adjusting Zero:
If intended function Tap the magnet over
S
ELECT
switch
N
OTE
:
Not applicable for Oxygen S/T.
Tap the magnet over the
M
ENU
switch to advance to the Span procedure
For adjusting the Span:
If intended function Tap the magnet over
S
ELECT
switch
Tap the magnet over the
M
ENU
switch to advance to each Alarm set point procedures
For adjusting the Alarm 1, 2 and 3 set points:
If Intended function Tap the magnet over
S
ELECT
switch
Tap the magnet over the
M
ENU
switch to advance the mA Span set point procedure
For adjusting the mA Span set point:
If intended function Tap the magnet over
S
ELECT
switch
Taping the
M
ENU
switch without taping the
S
ELECT
switch will allow you to cycle through the menu options.
You must Tap the
S
ELECT
switch in order to change the desired operation.
N
OTE
:
If the S/T fails to respond, the magnet may have become weak and may need to be replaced.
5ppm
Exit
Zero
Span
mA Span
Alarm1
Alarm2
Alarm3