Yokogawa FD30 Immersion Adapter - Manual (Page 4)

IM 12J6K4-E-E
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IM 12J6K4-E-E
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5. Installation
5.1 General
It is important to have the point of measurement in a location that is representing the
process composition. Check whether the specifications of the sensor/fitting/holder fulfill
the maximum occurring process conditions. Install the fitting in a place where it can be
maintained and calibrated safely and easily. After installation of the sensor it may need
several hours to stabilize readings. Stabilization can take up to 24 hours.
ATTENTION
Do not insert the fitting/holder into the process without the sensor mounted, to
avoid the cable leads becoming wet.
5.2 Assembling and mounting of the immersion fitting
5.2.1 Checklist
The FD30V27-xx-FN fittings will be delivered completely assembled. Flanges (suffix code -F1
or -F2) and options will be delivered separately. The FD30V27-00 version will be delivered in
parts excluding the pipe (see Figure 1). The holder piece (3) and the top piece (1a/b) have
an internal diameter suitable for both 40 mm and 11/4" customer's pipe. The jet cleaning
(option /JC) will be delivered as indicated in Figure 2.
Figure 1
1b
1a
11
9
10
2
3
6
7
5
8
4
Top piece (1a/b)
• Pigtail (2)
Holder piece (3)
• Screw piece (4)
• Conductive bu shing (5)
• “O”-ring (6)
• Stopper (7)
• “O”-ring (8)
Tube PVC adhesive (9)
Instruction manual (10)
Flange (if specified) (11)
5.2.2 Preparing the immersion fitting
Prepare the immersion fitting by unscrewing
the screw piece (4) from the bottom of the
fitting. Remove the stopper (7), which can
be discarded, and the conductive bushing
(5). The screw piece will be used to fix the
DO sensor in the fitting. When a flexible
conduit (protecting hose) will be used,
the pigtail part (2) can also be discarded.
When an immersion fitting with cleaner
is used the cleaning cage will be used to
fix the DO-sensor. In that case the screw
piece can also be discarded. In case of
a FD30V27-00 version the top piece and
the holder piece should be mounted on
the customers pipe using the supplied
adhesive. Ensure that the sealing will be
watertight.
5.2.3 Mounting the sensor in the
immersion fitting
Pull the sensor cable through the O-ring
into the fitting and through the pigtail (see
Figure 3). In case a flexible conduit will
be used please remove the pigtail and
follow the instructions delivered with the
protecting hose option. Push the O-ring
over the cable assembly until it lies on the
knurled ring. Plug the cable assembly into
the sensor body, if this was not performed
before. Secure the cable assembly with the
knurled ring. Place the sensor in the fitting
and put the bushing (essential for sensor
diagnostics) around the sensor as far as
it will go. Then screw the screw piece, or
the cleaning cage, in again. This will fix the
sensor in place by compressing the O-ring.
Tighten the pigtail at the top of the fitting.
Figure 2