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MAN0604_Issue 09_02-2013
2110M8030
The menu displays the state of the fault and alarm relays and the overrange.
(7)
Select Reset Alarms from the list.
(8)
Press ok.
The display returns to the Display Menu.
Note: Alarms are not reset until the esc button is pressed to leave the Display Menu and return to
the Main Menu.
4.7 SYSTEM CAliBRATiOn
Caution: The calibration procedure should only be performed by qualified personnel.
This section describes how to calibrate the gas cartridge fitted to an Apex Certified Sensor.
The Transmitter Unit and other system components do not require calibration. This procedure is
sometimes referred to as system or sensor calibration.
Cartridge are supplied from the factory fully calibrated for the target gas, re-calibration at
commissioning/start-up should not normally be required, However, if operating this product
in accordance with EN 60079-29-2, or if local / national regulations require the cartridge to be
calibrated this procedure should be followed. This procedure is also applicable if a cartridge requires
re-calibration following a warning or fault message, or as part of routine maintenance
The calibration adjustments are carried out at the Transmitter Unit and gassing is performed at the
Certified Sensor (this may be locally or remotely located).
The following equipment is required:
•
Flow Housing accessory (Part No: 2110B2140) - fitted with
rubber seal and supplied with loose hydrophobic filter
•
Test gas
•
Regulator
Note: Zero gas and Span gas should be at roughly the same humidity levels to avoid erroneous cell
responses.
A hydrophobic filter is supplied loose with the Flow Housing which must be fitted when calibrating
sensors with flammable gas cartridges.
When calibrating sensors fitted with other cartridge types then the filter mounted in the sensor cap
for normal gas sensing operation (if one was used) should be fitted to the Flow Housing.
4. OPERATION
82
Apex
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