Procedure:
1. Locate the pipe ID listed on the calibration information label on the side of the flow
meter enclosure. This information is also available on the calibration certificate.
2. Confirm that this inside diameter (ID) corresponds to the nominal diameter of the
pipe where the meter is installed.
a. To determine the nominal pipe size, measure the circumference of the pipe
without the insulation and divide this value by pi (3.14). This will give you the
outside diameter (OD).
b. Use the table on the following page to locate the nominal pipe size and ID
based on the OD
c. The table provides dimensions for common schedule 40 and schedule 80
pipes.
d. Contact ONICON for assistance if your pipe dimensions are not shown.
3. Once the ID is confirmed, prepare to insert the flow sensor by ensuring the
compression fitting is loose.
4. Thread the process adapter fitting on to the ball valve and tighten. Use the
appropriate thread sealant, as required, to ensure a leak free connection.
5. Open the ball valve and carefully insert the flow sensor until the end of the stem
just contacts the opposite wall of the pipe.
6. Mark the position of the stem where it exits the top of the compression fitting.
7. Withdraw the stem "X" distance as measured from the top of the compression
fitting. At the same time, position the electronics enclosure parallel to the pipe
in the correct orientation relative to the flow direction as shown in "Fig. 2.5:
Orientation of Flow Meter" on page 21. This will position the sensor with its axis
in line with the flow and in the correct direction.
8. Read the instructions on the next page before tightening the compression fitting.
- - FOR METERS WITH THE HIGH PRESSURE SAFETY CABLE - -
9. Once the compression fitting is tight, attach the safety cable using the capture nut
provided.
10. If necessary, rotate the top clamp to re-align the cable with the bottom clamp.
When rotating the clamp, make sure that it remains at the top of the stem pressed
firmly against the spacer. (see appendices for details).
* refer to model number coding to determine the stem length of your meter.
Model F-5500
INST
ALL
A
TION
11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax +1 (727) 442-5699 • [email protected]
F-5500 Thermal Mass Flow Meter Manual 06/17 - 2030 / 107023
Page 23
Installation
Procedure
Installation: Insertion Type
Nominal Dia.
OD
ID
X
Minimum Stem Length*
Schedule
40
Schedule
80
Schedule
40
Schedule
80
1
½
"
1.900"
1.610"
1.500"
Always Use 0.1"
15"
2"
2.375"
2.067"
1.939"
0.304"
0.240"
15"
2
½
"
2.875"
2.469"
2.323"
0.505"
0.432"
15"
3"
3.500"
3.068"
2.900"
0.804"
0.720"
15"
4"
4.500"
4.026"
3.826"
1.283"
1.183"
15"
6"
6.625"
6.065"
5.761"
2.303"
2.151"
18"
8"
8.625"
7.981"
7.625"
3.261"
3.083"
18"
