Honeywell MDA Scientific MIDAS User manual
1. Introduction
The MIDAS® sensor cartridge is supplied separately
and needs to be fitted to the detector’s main chassis.
Before installing a sensor cartridge check that the
number on the sensor cartridge label matches the
gas type and range for the function required. All
sensor cartridges are supplied calibrated.
Some MIDAS® sensor cartridges are capable of monitoring for more
than one type of gas. For details of how to set the
different gas types for a multi gas sensor cartridge refer to the
MIDAS® operating manual MIDAS-A-001.
NOTE: To avoid potential contamination of the gas sensing
surface, avoid handling the sensor cone. Hold sensor cartridge
by the locking tabs. Avoid exposure to dust, grease or any other
chemical contaminants.
Diagram 2.
Removing sensor cartridge
Diagram 3.
Fitting/replacing sensor cartridge
For further details refer to the MIDAS® operating manual
MIDAS-A-001.
2. Sensor cartridge fitting/
replacement
1. Unscrew the captive thumbscrew located on the front panel
and remove the cover by pulling it forwards off the main chassis
(see diagram 1). Switch power off using the power switch
on the backplane of the unit.
2. Ensure the power switch on the terminal module is in the
‘off’ position.
3. Remove the old sensor cartridge from the unit (if fitted) by
unclipping the two sensor cartridge locking tabs located either
side of the sensor cartridge and using them to firmly pull
the sensor cartridge out (see diagram 2).
4. Fit the new sensor cartridge by aligning the pins at the top
of the sensor cartridge with the socket in the sensor cartridge
chamber.
5. Carefully push the sensor cartridge into the sensor cartridge
chamber until fully home and lock in place using the tabs
either side of the sensor cartridge (see diagram 3).
6. Switch the power switch located on the terminal board
to the ‘on’ position.
7. Refit the detector’s cover by aligning the slots either side
with the locating tabs on the mounting bracket assembly
and
pushing the cover horizontally until home.
8. Tighten the thumbscrew located on the front panel
(see diagram 4).
2. Sensor cartridge fitting/
replacement
Diagram 1.
Removing detector cover
Diagram 4.
Refitting detector cover
Issue1.1 12/2005
H_MIDAS-A-021_V1
© 2005 Honeywell Analytics
11087
Quick Start Guide
MDA Scientific MIDAS®
Sensor Cartridge Installation
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