ANALOX 1371 MK 2 SURVEYOR CARBON DIOXIDE MONITOR
1371-810-03 User Manual, August 2007
1717
8.3
TRANSDUCER REPLACEMENT
The Infra-Red Transducer (CO
2
Sensor) is constructed as a complete Module which permits rapid,
relatively straightforward, field replacement, in the unlikely event of the Transducer requiring
service.
It is strongly recommended that this operation is only carried out by personnel who have
attended a relevant training course at Scottish Anglo, or Qualified Electronics Engineer, with
guidance from Scottish Anglo E.P. Service Department.
The procedure is as follows:
1
Remove power from the Instrument and open the clear plastic door cover. Remove the 4
corner screws in the instrument front panel and carefully ease the front panel away from the
housing. The panel may be temporarily 'parked' in the upper pair of guide slots, located on
the side members of the housing.
2
The Transducer is located in the lower right corner of the housing. It is a metal box
measuring approximately 115mm x 65mm x 30mm.
3
Remove the 6mm OD plastic tubes from the gas flow adaptor, mounted on the top of the
Transducer. This operation is best carried out by inserting the jaw tips of a pair of thin
nosed pliers, between the end of the plastic tube and the hexagonal white part of the flow
adaptor and gently levering the tube off the barbed connector.
4
Separate the two halves of the 'In-Line' connector located on the right of the Transducer.
5
The Transducer is secured to the baseplate by 4 x No 8 Self tapping screws. Remove these
screws and the Transducer may then be withdrawn from the Instrument housing.
6
Fit the replacement Transducer and re-assemble the Instrument.
7
Switch on the power supply to the Instrument and allow it to operate for about 30 minutes.
Carry out a full Calibration routine as detailed in Section 5 of this manual.
8
The original Transducer should be returned to Scottish Anglo E.P. Ltd. for further
investigation.
