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
BLUE
GREY
GREY
PURPLE
BLACK
BLACK
PURPLE
BLACK
RED
FRONT PANEL
BACK PANEL
BASE PANEL
REMOVE 4 SCREWS
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