Mounting The Subassembly; 3-4.Sensor Mounting; General - YOKOGAWA FF20 Instruction Manuals

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3-3-2. Mounting the subassembly

The subassembly can be cemented or welded directly in a piping system or in a T-piece of
it. Install the subassembly at a convenient location for maintenance and calibration.
Ensure that there is some place at the top of the fitting (approx. 20 cm) for mounting or
replacing electrodes.
Fig. 3-6 shows some mounting examples. Select the mounting position so that the sensors
are immersed in the process liquid during measurement.
(Model WU20) should be used (see fig. 3-7).
GLUE
GLUE
GLUE
Figure 3-6
3-4. Sensor mounting

3-4-1. General

For stable measurement the glass- and the reference electrode should be mounted in the
holes nearest to the earth connection.
When mounting sensors of Yokogawa in a fitting or subassembly the electrode cables
(Model WU20) should be used (see fig. 3-7).
TRIAX-cable (model WU20-LT) for combined electrode
outer screening white
colour marker
colour marker
core red
Cable nut
inner screening blue
10 cm
COAX-cable (model WU20-PC) for single electrode
core red
colour marker
colour marker
Cable nut 10 cm
screen blue
Figure 3-7
IM 12B6K1-01E-E