ENMET EX-5175 - Manual (Page 11)

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