STATUS SCIENTIFIC CONTROLS
Installation, Commissioning & Routine Gas Testing
FGD10B Pellistor Gas Detector
TD18/008
Issue:
10
Change Note:
1904
Page 30
5.1.2.
Sensor Span
Always zero the sensor prior to performing a span operation.
•
From the menu system select menu option:
E: 2
and press
.
•
Apply a known concentration of gas (applicable to sensor type)
at a flow rate of between 500 and 1000cc/min. Allow time for
the sensor to respond.
•
Using the
and
buttons, set the reading to that of the
calibration gas level.
•
Press
to span the sensor, ‘
– – – –
‘ will be displayed to
confirm the sensor span has been performed.
Note: pressing MENU rather than ENTER exits the span
feature without performing the calibration.
Wait until the reading is stable, if necessary press
again
to span the sensor.
•
Press MENU to close the menu system.
Note: the SPAN factor will be displayed momentarily on exit.
•
Turn off and disconnect the calibration gas.
