Maintenance and Troubleshooting Manual
Section 3: Meter maintenance
3-9000-772 Rev B
January 2018
Replacing the meter electronics
55
3.4
Replacing the meter electronics
The following procedures should be performed by a qualified Daniel Measurement Services
technician or trained personnel.
The 3818 LNG Liquid Ultrasonic Flow Meter is equipped with
co-located Transmitter Electronics Enclosures. The Primary electronics enclosure is designated
on the serial number tag followed by _H1. The Secondary Transmitter Electronics enclosure is
on the serial number tag followed by _H2.
Electronics maintenance
Tasks
Transmitter Electronics Enclosures
•
Section 3.4.2 “Replacing the CPU Module”
(P/N 1-360-03-010)
•
Section 3.4.3 “Replacing the fuse”
(Littlefuse #218002.HXP)
•
Section 3.4.4 “Replacing the Backplane”
(P/N 1-360-03-007)
•
Section 3.4.5 “Replacing the I.S. Barrier board”
•
Section 3.4.6 “Replacing the Power Supply Board”
(P/N 1-360-03-003)
Base Enclosure Electronics
•
Section 3.4.7 “Replacing the Acquisition Module”
(P/N 1-360-03-013)
•
Section 3.4.8 “Replacing the Acquisition cable or synchronization
cable”
(P/N 1-360-01-595)
Table 3-4 Electronics maintenance tools list
Tools required
1/8 inch (3mm) flat-blade screw driver (3mm)
1/4 inch (7 mm) flat-blade screw driver
3/8 inch drive ratchet wrench
3/8 inch drive - extension - at least 3.5 inches long
7/16 inch socket wrench
3 millimeter Allen wrench (Daniel P/N 2-4-9200-501)
Support plate for Base Electronics Enclosure and 2 inch pipe strut clamp assembly
