Addendum 1
CHECK and FIX Functions
CHECK
5 OF 11
FIX
6 OF 11
á
1
SENSOR
á
1
SENSOR
The Check Function can be used to validate that a connected gas detector
channel is correctly set up and calibrated. Select the function from the (50)
engineer menu and you are prompted for which channel to check. The TOC-
625 then runs an automated sequence where it checks that the range matches
the calibration gas value used and that zero and calibration voltages are
consistent. Once the check is complete each press of the button displays each
data item checked on the panel. If the set up data item is correct the backlight
stays green otherwise it is highlighted red to show it is in error or yellow for a
warning. Any errors can be corrected by using the FIX menu item.
Select Sensor
Select Sensor
Select Sensor
CHECK
PASSED
CHECK
FAILED
0.0
CONC
0.0
CONC
0.99
VOLTS
0.99
VOLTS
0.99V
ZERO
0.99V
ZERO
50
BOTTLE
50
BOTTLE
1.75V
CAL
2.30V
CAL
100
RANGE
100
RANGE
Press button to advance displayed data
Press button to advance displayed data
Shows Concentration
and detector volts now
Shows Concentration
and detector volts now
Stored Zero
Volts
Stored Zero
Volts
Stored Cal
Volts
Stored Cal
Volts are
too high
and need
correcting
Entered bottle value and
channel range.
Entered bottle value and
channel range.
Use the FIX menu option to
correct any errors
The FIX option will automatically ‘repair’ any set up issues relating
to a channel that has failed sensor CHECK.
In the example shown above where the channel fails due to the
cal voltage being too high; FIX will set the gain setting back to a
sensible default value.
After running FIX on a channel its calibration should be re-
checked with a known calibration gas.
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A Division of International Gas Detectors
Tel: +44 (0)161 483 1415
Fax: +44 (0) 161 484 2345
Email: [email protected]
