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Reference Manual
00809-0100-3222
2
Install
2.1
Installing the sensor
Prerequisites
First, decide whether the initial calibration will be done in the shop before installing the
sensor or in the process piping after installing the sensor. For information about in-shop
and in-process calibrations, refer to the
Note
Install the sensor in a location where it is completely filled with process liquid. A vertical
pipe run with the flow from bottom to top is best.
Procedure
1. Remove the grounding strap from the outer flanges. See
2. Carefully remove the nuts, bolts, insulating bushings, and washers from the flanges.
3. Separate the flange sets and remove the flange gaskets. Keep them safe.
4. Install the outer flanges on the process piping as per dimensions noted in
5. Install a ½ in. FNPT thermowell in the process piping within 6 ft. (1.8 m) of the
6. Put the sensor between the process mating flanges with the flange gaskets inserted
7. Align the bolt holes.
8. Insert an insulating sleeve in each bolt hole. See
9. Place a metal washer on each bolt, followed by an insulating washer.
10. Put an insulating washer followed a metal washer on each bolt.
11. Screw a nut onto each bolt and tighten according to torque given in
Rosemount 222 Sensors
Save the strap and all the hardware for reassembly.
Keep them safe.
and
Figure 2-3
Use pipe joint compound or pipe tape to ensure the connections do not leak.
sensor.
For best results place the thermowell as close as possible to the sensor.
between each set of flanges.
If the process piping is lined with a non-conductive material, a metal orifice plate
(contact ring) must be installed between the flanges. Consult the factory for more
information.
Insert the bolt through the insulating sleeve.
Note
Before tightening the bolts (step 11), be sure the flange gaskets are installed
between the system piping and the sensor and that the insulating sleeves and
washers are in place. For the sensor to operate properly, there must no metal to
metal contact between the sensor and the process piping.
Sensor calibration
section.
Figure
2-1.
Install
September 2018
Figure
2-1.
Figure 2-2
Table
below.
11
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