Spectrex Series 300 Open-Path Gas Detection System - Manual (Page 33)

Spectrex Inc. - SafEye TM 300 Gas Detector Manual – TM 794100, Rev. D, May 2004
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5.4 Mounting for Standard Open-Path Installation
The following instructions are applicable for both the Light Source unit and the
Detector unit. The detector may be mounted on special Swivel Mounts (see
5.4.1) or
i. Tilt Mounts (see 5.4.3)
ii. Duct mounts – (see5.5)
iii. Also see appendix D if EExde version used
5.4.1 Swivel Mount Kit
Note
For Aluminum and St. St. detector enclosure use Swivel Mount:
•
P/N 794765 for inches measure
•
P/N 794765-1 for metric measure.
The Swivel Mounts models are made of St. St. 316L.
Table 15. Swivel Mount Kit
Item QTY Location
Swivel Mount 1
Screw 1/4”-20UNC or M6 x 1P 4 Detector - Holding plate
1/4” Spring Washer 4 Detector - Holding plate
5.4.2 Swivel Installation (Figure 6)
1 Place the swivel mount Securing Plate (2) in its designated location and
secure it with four M6 or 1/4”-20UNC screws (9), placed 3 in. (76.2 mm.)
apart.
Note
Skip this step if the mounting is already installed. Also detector removal for
maintenance purpose does not require Swivel Mount removal.
2 Unpack the detector carefully
3 Place the detector with its conduit inlets/electrical entries pointing down on
the holding plate of the swivel mount (10). Secure the detector by four 1/4”-
20UNC allen screws or M6 x 1P (8) with 1/4” spring washers from the swivel
mount kit (use No. 5 Hex Key for M6 screws, or 3/16” Hex Key for 1/4”-
20UNC screws).
4 Tighten the three locking 3/8”-24UNF screws (5) of the swivel mount ring until
the friction in the ball joint holds the detector in its position. Yet, still permits it
to be moved by hand-applied force (use 3/16 Hex Key).
5 Point the detector towards the Light Source and make certain that the view of
the area is not obstructed. Secure the detector in that position by tightening
the locking screws of the swivel mount ring.
6 Repeat mounting and Swivel Mount installation described in this chapter for
installing the Light Source.
The detector is now correctly located and ready for the electrical connection to
the system prior to fine alignment.