K-Patents PR-01-S - Manual (Page 26)

INSTRUCTION MANUAL FOR K-PATENTS PR-01-S (-AX/FM/CS) DOCUMENT/REVISION No. INM 1/14
Effective: May 15, 2009
24
3.3. MOUNTING AND DISMOUNTING
The sensor mounting procedure: (Figure 3.30)
a. Remove the prism protection sticker before the sensor is connected to the process line.
b. Identify the sensor by the serial number. Sensors are interchangeable under special conditions only and
recalibration is normally required, section 3.5.
c. Check flow direction. If the fitting has a fixed flange, the bolt holes should allow proper flow
alignment of probe. If this is not the case, remove the two fixing bolts, (Section 7.1 sensor item 2.2).
The sensor flange can then be freely rotated. Save the bolts, they are useful at dismounting.
d. Heat insulate the sensor flange if it can be suspected that a too strong cooling effect can cause prism
coating, Section 8.1.
Note. If the process medium is hot and sticky, it is recommended to heat the probe by using hot water
before mounting. A cool prism tends to be rapidly coated.
c
b
a
d
Figure 3.30 Mounting procedure.
Dismounting
If a flanged sensor sticks in the fitting, pulling force can be generated by the flange fixing bolts.
Proceed as follows:
– remove the fixing bolts (Section 7.1, item 2.2)
– lift the sensor flange away from the flange fitting
– screw the bolts directly into the threaded holes
– tighten the bolts alternately in small steps
3.4. WASH NOZZLE FOR STEAM
For mounting of the prism wash systems, see Chapter 8.
3.5. INDICATING TRANSMITTER
The Indicating transmitter should preferably be located in an easily accessible, well-lighted and dry area.
The enclosure must not be exposed to rain or direct sunlight. Avoid vibration. Take interconnecting cable
length into consideration.