Section 3: Meter Maintenance; Table 3-1 Contents-Transducer Maintenance - Emerson Daniel 3818 Maintenance And Troubleshooting Manual

Maintenance and Troubleshooting Manual
3-9000-772 Rev B

Section 3: Meter maintenance

31
Daniel 3818 LNG Liquid Ultrasonic Flow Meters require minimal maintenance. The Meter
Maintenance section discusses procedures to re-wet the transducers, replacing the transducer
housings or transducers, and the Transmitter Electronics.

Table 3-1 Contents-Transducer maintenance

Maintenance task
Removing the shroud
Re-wetting the transducers
Replacing the transducers
Replacing the meter electronics
Installing the shrouds
Sealing the meter
Description
•
Band shrouds
•
Common procedure for all meters
•
Replace the transducers
Meter electronics
—
CPU board
—
Fuse
—
Backplane board
—
I.S. Barrier board
—
Power Supply board
—
Acquisition Module
—
Acquisition cable or synchroni-
zation cable
•
Band shrouds
•
Seal the meter electronics
Section 3: Meter maintenance
Section
•
3.1 Removing the shrouds
— Section 3.1.1 "Removing the band
shrouds"
•
3.2 Re-wetting the transducers
•
3.3 Replacing the transducer assembly
•
Section 3.4 "Replacing the meter electron-
ics"
— Section 3.4.2 "Replacing the CPU
Module"
— Section 3.4.3 "Replacing the fuse"
— Section 3.4.4 "Replacing the Backplane"
— Section 3.4.5 "Replacing the I.S. Barrier
board"
— Section 3.4.6 "Replacing the Power
Supply Board"
— Section 3.4.7 "Replacing the Acquisition
Module"
— Section 3.4.8 "Replacing the Acquisition
cable or synchronization cable"
•
Section 3.5 "Installing the shrouds"
— Section 3.5 "Installing the shrouds"
•
3.6 Sealing the meter
•
3.6.1 Sealing the transmitter electronics
enclosure
•
3.6.2 Sealing the Bracket/Cover and Base
electronics enclosure
January 2018
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