Baker Hughes Ultrasonic Liquid Flow Meter Sentinel LCT8

- The sensor ports contain the sensors and sensor wiring. These ports should only be serviced by properly trained and qualified service technicians. Modification or alteration in any manner may degrade the performance of the system.

- Required equipment Before proceeding, ensure that the following tools are available: • 10 mm hex drive socket or wrench

• 12 mm hex drive socket or wrench

Checking for internal leaks 1. Locate the upstream “A” plane sensor quadrant. This quadrant can be found by locating the tag plates on the pressure vessel.

2. Relieve potential pressure build-up by loosening the pressure relief plug on the bottom of the upstream “A” plane sensor quadrant (see Figure 91 above), using a 10 mm hex drive socket or wrench. Slowly loosen the pressure relief plug 2-3 full turns or until the plug bottoms out on the built-in safety stop.

3. Listen to and observe the area near the pressure relief plug: a. If any hissing is heard, indicating air or gas release, stop loosening the plug and wait for the hissing to stop. If the hissing continues for more than 10 minutes, re-tighten the plug and consult Panametrics.

b. If any liquid discharge is observed, stop loosening the plug and re-tighten it completely.

c. If no hissing or discharge is observed and the plug has been backed out to the safety stop, then any pressure buildup has been released and the ports are now serviceable.

4. Avoid servicing the equipment contained within the sensor ports and transmitter connection, as it is serviceable only by factory trained service technicians.