7835
Hydrazine Monitor
3 Mechanical Installation
6
IM/7835–EN Rev. P
3 Mechanical Installation
3.1 Unpacking
3.2 End of Life Disposal
3.2.1 Transmitter
The transmitter unit does not contain any substance that causes
undue harm to the environment and must be disposed of in
accordance with the Directive on Waste Electrical and Electronic
Equipment (WEEE). It must not be disposed of in Municipal
Waste Collection.
3.2.2 Sensor and Sensor (Wet Section Assembly)
ABB recommend returning the sensor back to the Company for
safe disposal, preferably with the electrolyte/filling solution
cleaned out before dispatch.
The sensor wet section assembly must be emptied, cleaned
and disposed of in accordance with the Directive on Waste
Electrical and Electronic Equipment (WEEE).
3.3 Cleaning
Clean the transmitter and sensor units using warm water and a
mild detergent only. Do not hose down the sensor unit.
3.4 Installation Conditions
Mount both units in a clean, vibration-free environment, avoiding
direct radiant heat, sunlight and draughts. Avoid areas likely to
have contaminating gases, particularly chlorine.
Mount the sensor no more than 10 m (30 ft.) from any
associated sample cooler – see Section 4.7, page 12. The
transmitter can be mounted up to 100 m (325 ft.) away from the
sensor unit.
The holes for wall mounting both units are suitable for 8 mm
(0.32 in.) diameter fasteners and are located as shown in
Figs. 3.1 and 3.2, page 7.
Leave sufficient space in front of the cases for access, and to
the side for making cable connections to the transmitters.
3.5 Overall Dimensions
3.5.1 Transmitter Unit
Wall mounting is by 4 x 8 mm (0.32 in.) diameter fasteners on
230 x 230 mm (9.0 x 9.0 in.) centers – see Fig. 3.1, page 7.
1. Unlock the door and open fully.
2. Remove all 4 screws and remove the terminal cover plate.
3. To release the electronics assembly plate, remove all 6
screws.
4. Remove the safety earth (ground) bonding leads attached
to the metal case.
5. Release the 2 x M6 captive screws securing the
electronics assembly plate to the back of the case and
remove completely.
6. Fix case to wall or panel.
7. Replace the electronics assembly plate, secure it with the
captive screws, and replace the earth (ground) bonding
leads. Refit all 6 screws.
8. Re-position the terminal cover plate and refit all 4 screws.
Caution.
Visually inspect equipment for damage before
installing. Do not install damaged or faulty equipment.
Caution.
Locate the transmitter and sensor units in a position
where their temperature and humidity specification are
not exceeded and ensure it is protected from direct
sunlight, rain, snow and hail.
Select a location away from strong electrical and
magnetic fields. If this is not possible, particularly in
applications where mobile communications
equipment is expected to be used, screened cables
within flexible, earthed metal conduit must be used.
