Honeywell Searchline Excel Open-Path Technical Handbook page 35

MAN0530 Issue 09 October 03
2104M0506
3. INSTALLATION AND OPERATION
Initial coarse mechanical adjustment is first carried out by means of large self-locking clamping
nuts and with the help of an alignment telescope.
Fine adjustment is then achieved by means of mounting bracket and pivot block grubscrews
which move levers on the adjustment clamps, fitted to the pivot block and unit studs, and hence
the unit.
After initial mechanical setup the units are powered up and the mechanical alignment is optimised
and verified electronically by means of the associated Handheld Interrogator linked to the
Receiver.
By entering the operating range of the gas detector the Interrogator then provides reassurance
that the alignment has been performed successfully. The gas detector cannot be put into service
until it is.
The following equipment is used to carry out the alignment and commissioning:
• Alignment Telescope suitable for the distance between the units (see
Appendix C - Accessories & Spare Parts).
• SHC1 Handheld Interrogator (see Appendix C - Spare Parts).
• Optional SHC Protection Device (see Appendix C - Accessories & Spare Parts) -
see Note˚8.
• Appropriate plastic test filters (see Chapter 5, section 5.1.2).
• 3mm hex (Allen) key (with additional 5mm key for mid/long range gas detectors).
• 19mm spanner (with additional 30mm spanner for mid/long range gas detectors).
Notes:
1. Ideally, carry out the alignment procedure on a clear day.
2. Get familiar with the workings of the adjustable parts of the gas detector before proceeding
with the alignment procedure, see section 3.7.4.
3. The alignment telescope uses the same datum used when the unit was aligned in the
factory to ensure precise field alignment.
4. The telescope incorporates eye relief adjustment for comfortable viewing.
5. Keep the telescope mirror and optics clean.
6. Do not try to adjust the cross-hairs using the telescope's elevation and windage adjusters
as they have been factory set.
7. If the telescope is damaged or misaligned it will need to be returned to the factory for
repair or realignment.
8. The SHC Protection Device is only required if connecting the SHC1 Handheld Interrogator
via a junction box other than a DVC100 or DX100 or DX100 (M).
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Searchline Excel