11
OFDMANUAL 0816
I N S TA L L AT I O N C O N T I N U E D
10.
Calculate the Insertion distance for 2" MNPT Seal Housing:
TID cannot be calculated until the Seal Housing is screwed into place. If you have not already done so, please
screw your OFD™ sensor into place now.
You must then measure the Threaded Depth (TD) into the Valve or connection in order to calculate TID. You
can do this by measuring the distance from the edge of the Valve or female connection to the top of the Seal
Housing body and subtracting that distance from 5.25". FIG. 3-7.
First mark
Second mark
FIG. 3-8
TID
Measuring points
For example:
If the measured distance from the top of the valve to the top of the seal housing
body is 4.75", you would calculate the threaded depth (TD) by subtracting 4.65" from 5.25".
(5.25 – 4.65=0.6) In this case the threaded depth TD would be .6".
You are now ready to calculate TID.
TID= (D1) + (Pipe Wall Thickness) – (TD) – (.25")
Example for D1=19", Pipe WT=3/8", and TD=.6"
TID=(19)+(.375)-(.6)-(.25)
TID=18.525"
Use the calculated TID and mark a second line on the shaft, measuring from first mark. FIG. 3-8.
11.
FIG. 3-7
