ENMET EX-5120 - Manual (Page 12)

EX-5120 ENMET Corporation
10
5.2.2 Gas Span
It is recommended that the Zero Function be performed first.
Enter the maintenance menu. See Figure 5, EX-5120 Maintenance Menu flow chart.
1. Tap the M ENU switch once to show Span on the display.
2. Tap the S ELECT switch to perform a Span procedure. The display will alternate between the calibration gas concentration
and a signal level.
3. Attach the associated calibration gas cylinder to the regulator and calibration cover. See to Figure 4.
4. Open the valve to apply the calibration gas to the sensor.
5. Watch for the signal level to stabilize.
6. Once the signal level has stabilized, the EX-5120 will automatically lock in the calibration data and:
If the Span is successful, Cal OK appears on the display momentarily, then advances to Alarm 1. Remove calibration gas.
To exit maintenance menu tap the
M ENU switch until Exit appears, then tap the S ELECT switch.
If the sensor is outside of acceptable parameters, Bad Span is displayed momentarily, then returns to Span.
Remove calibration gas. Tap the
M ENU switch until Exit appears, then tap the S ELECT switch. Check span gas and
repeat calibration.
N OTE : Some software revisions require the S ELECT switch be tapped to accept the signal.
7. Calibration is complete.
5.2.3 Exit Maintenance Menu
Exit maintenance, by tapping on the M ENU switch until Exit appears on the display. Tap the S ELECT switch to return to the
instrument Normal Gas Display.
Normal Display Mode
N OTE : You can change the Calibration Gas Level. H OLD the magnet over the S ELECT switch for 2 – 4 seconds
The M ENU switch changes digit indicated by underscore cursor
The S ELECT switch locks underscored digit and moves to next digit
5%
M ENU
H OLD the magnet over the M ENU switch for 2 – 4 seconds
to enter the Maintenance Menus
Exit S ELECT
Tap the S ELECT switch to return to the Normal
Display Mode. See Section 5.2.3
M ENU
Tap the magnet over the M ENU switch to cycle through Maintenance Menus
OR
Zero
Cal OK
If the Zero signal is within Preset Specs the EX-5120 will display
Cal OK, See Section 5.2.1
If the Zero signal is not within Preset Specs the EX-5120 will
display Bad ZERO
N OTE : Some software revisions require the S ELECT switch be
tapped to accept the signal.
S ELECT
M ENU
Bad ZERO
PV: 0 S ELECT Tap the S ELECT switch to initiate Zero adjustment
Select Menu