Michell Instruments Optidew Vision User manual

Issue 03, May 2008 Manual No.97073SUP1 3 Pages

2003 Michell Instruments Ltd

Optidew Vision

Users Guide Supplement No. 1

Panel Mount Fitting

OPTIDEW VISION, Panel Mount Fitting Users Guide Supplement No. 1

Page 2

www.michell.com

Introduction.

This guide is for the use of customers who wish to panel mount a standard Optidew

Vision Optical Dewpointmeter into a standard 19” racking system. To do this

properly, a Michell Instruments Ltd. panel mount kit Part No.9980504 is required.

Warning!

Before starting work, ensure that the mains lead is fully removed from the unit.

Remove all connections to the instrument (including the sensor and temperature

probe).

Dismantling

1. Remove the 4 screws holding the rear panel in place (FIG 1). The rear panel will

now be loose and held by its cables. Take care not to damage the wires.

2. Remove the 2 front panel plastic clip retainers and remove the 4 screws holding

the front panel (FIG 2). The display PCB should now be loose –allow it to drop

forward and unplug connectors PL1, 2 & 3.

3. On the underside, remove the 4 pozi drive screws (the nearest to the side panels)

to release the base plate (FIG 3).

4. Retain all the screws and plastic clips.

5. With the feet resting on a surface, carefully lift the case lid up, by its handle, from

the base plate until some resistance is felt. Then slide the lid towards the front

until some resistance is felt.

6. Feed the front panel through the bezel and remove the cover.

7. Remove the handle and its fixings from the case lid. Retain the screws.

8. Remove the case feet (1 screw each) and discard.

9. Fit the 2 small blocks to the inside of the case lid using the M3 x 10 long

countersink head screws (x2) supplied. The screws should be fitted in the middle

holes of the blocks. Ensure that the outer holes are in alignment with the

respective holes in the case lid.

10. Re-assemble the instrument without the handle and feet. Ensure that the

connectors PL1, PL2 & PL3 are re-connected correctly and that there are no

trapped wires when assembling the cover (SEE FIG 4).

11. Fit the 2 panel mounting brackets to the panel using the M4 x 8 pozi countersink

head screws (x4) supplied.

12. Slide the instrument through the panel aperture and screw the case to the

mounting brackets using the M3 x 16 long pan head screws, M3 shakeproof and

M3 plain washers (x4 of each) supplied.

OPTIDEW VISION, Panel Mount Fitting Users Guide Supplement No. 1

Page 3

www.michell.com

13. Hold the instrument with its bezel tight against the panel. Slide the 2 brackets up

against the rear of the panel and tighten all the screws.

14. Fit the completed panel into the required rack using the M6 x 16 long pan head

screws, M6 plastic washers and M4 cage nuts (x4 of each) supplied.

PL3

PL2

PL4

PL1

BLUE

GREY

PURPLE

BLACK

PURPLE

BLACK

RED

FRONT PANEL

BACK PANEL

BASE PANEL

REMOVE 4 SCREWS

LEVER CLIPS OUT

DISPLAY PCB CONNECTIONS (FRONT VIEW OF PCB)

REMOVE SCREWS

FIG 1

FIG 2

FIG 3

FIG 4

TO PL9

TO RS232

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