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Chapter 6. Transducer Replacement
112 Sentinel™ User’s Manual
IMPORTANT: Do not reuse the old o-rings. Replace them with new o-rings, as specified in Table 2 on page cxi.
Use the components described in the previous section, to install the new transducers as follows:
1. Lubricate and install three new o-rings in the T11 holder (see Figure 86 below and Table 2 on page cxi ).
Note: The item numbers shown in Figure 76 below correspond to those listed in Table 2 on page cxi.
Figure 13: Holder Cross-Section - O-Ring Placement
2. Inspect the sealing surfaces of the sensor holder and the T11 transducer that is to be inserted into the meter body
to verify that there is no damage to either surface.
3. Apply anti-seize lubricant to the new T11 transducer NPT threads, then assemble a T11 pusher onto the new
transducer (see Figure 87 on page cxiii ).
4. Lubricate the shaft of the transducer with spray lubricant that is safe fir the o-rings. Then, insert the transducer
into the meter body holder, while carefully pressing the transducer head past the radial o-rings (see Figure 86
above and Figure 87 on page cxiii ).
5. While keeping the pump valve open, thread the insertion mechanism onto the holder and connect the hydraulic
pump (see Figure 80 on page cviii).
6. Slide the T11 transducer back to the positive stop of the insertion mechanism (see Figure 84 on page cx ). Verify
that the pressure relief valve is closed and torqued to 15 ft-lb.