Spectrex Series 300 Open-Path Gas Detection System User Manual

Page 33

Spectrex Inc. - SafEye

300 Gas Detector Manual – TM 794100, Rev. D, May 2004

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

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

Screw 1/4”-20UNC or M6 x 1P

Detector - Holding plate

1/4” Spring Washer

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.