ABB 9408 Series Buku Petunjuk - Halaman 8

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...3 MECHANICAL INSTALLATION

3.2 Installation

Caution. The system is supplied with the temperature probe and a dummy oxygen capsule fitted into the oxygen sensor

body which is in the ball assembly. Before securing the boom to the handrail bracket, unscrew the dummy capsule from

the end of the oxygen sensor body and fit the oxygen sensor capsule to the sensor body – see Section 5.1 Replacing the

Oxygen Sensor Capsule.

The floating ball system is provided with pipe clamp fittings for handrail fixing. The installation should be arranged to ensure that

when the boom is anchored to the rail, the sensor in the ball is fully covered by the liquid to be monitored.

3.2.1 Floating Ball System – Fig. 3.3

Select the position for the floating ball system on the handrail.

Standard

Swivel

<30°

Adjust the centre line of the handrail clamp to

be at right angles to the boom with the ball at

rest on undisturbed monitored liquid to ensure

equal maximum fluctuations of the boom, up

and down, when the handrail clamps are

tightened. Tighten the four handrail clamp

securing nuts. DO NOT OVERTIGHTEN.

Make the necessary

electrical connections – see

Section 4 ELECTRICAL

INSTALLATION.

If applicable, arrange to have a water wash mains supply

available – see Section 3.3 – and connect to the quick

fit connector on the end cap.

Note. Allow sufficient cable slack for positioning/

servicing procedure.

Fit the handrail clamps around the

handrail and secure the boom saddle

assembly to the handrail in the

horizontal position. Leave nuts finger

tight to allow for adjustment when the

assembly is complete.

Viewed from above

<30°

Ensure that the sensor will be fully

immersed in the monitored liquid

and secure the clamps to the boom

with the nuts and washers provided.

Fig. 3.3 Installing the Floating Ball System

Fit the two pipe clamps around the boom

of the floating ball assembly.

Note. In applications where excessive air bubbles

are apparent, it is suggested that the pipe is twisted

in the clamps through an angle not greater than

30°, in order to avoid accumulation of bubbles

around the sensor.

Swivel

Standard

Swivel

Standard