Transducer Installation
Page 17
August 2019
DPP-UM-00256-EN-03
OTEE:
N
For some low pressure/low temperature applications less than 30 psi (2 1 bar) and less than 100° F (38° C), the probe
may be pushed in by hand to decrease the insertion time
Full Port
Ball Valve
Seal
Fitting
DP7 Probe
Pipe Wall
B
E
A 1/8 Pipe
Diameter
DP7
Length
Insertion
Measurement
D
Valve and
Seal Stack
C
Internal
Diameter
Figure 10: Installation measurements
Flow Direction
Arrow
Figure 11: Flow direction arrow
1 Lubricate the O-rings located within the DP7 probe seal fitting so that the seals are not damaged during probe insertion
2 Run the lower jam nuts down to a point that approximates the final insertion position or at least far enough to allow
insertion into the insertion fitting
3 Using the threaded rods as a guide, position the probe in the insertion fitting Continue to insert the probe into the
isolation assembly until the probe tip comes in contact with the closed “ball” in the isolation valve
CAUTION
DO NOT FORCE THE PROBE TIP AGAINST THE “BALL”, AS DAMAGE TO THE PROBE TIP MAY RESULT.
4 Replace the upper jam nuts (2 on each rod) and the cotter pins The nuts should be run down to the top side of the
retaining collar and the cotter pins replaced
5 Orient the probe in the direction of flow as indicated by the flow direction arrow located on the top of the probe flange
6 Lock the probe in position with the enclosed Allen wrench
CAUTION
THE NUTS ON BOTH ENDS OF THE RETAINING RODS MUST ALWAYS BE IN PLACE AS A SAFETY MEASURE TO PREVENT
POSSIBLE PROBE BLOW OUT. INSERTING COTTER PINS IS A FURTHER SAFETY MEASURE.
7 Slowly open the isolation valve When the valve is fully open, use the proper size wrench on the insertion nuts, alternately
tightening each nut about two complete turns to avoid uneven seal loading
