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Daniel 3818 LNG Liquid Ultrasonic Meter Installation Manual Section 1: Introduction
3-9000-771 Rev A May 2012
Pre-installation considerations 11
1.7 Pre-installation considerations
• Pipeline equipment code compliance, ANSI, ASME, etc.
• Proper Inlet/outlet meter tube piping for reasonable stable flow to the settling chamber
(first meter tube spool upstream of the meter).
• Electrical safety compliance; UL, ULC, ATEX, IECEx etc.
• Civil and structural good practices compliance
• Contractual agreements or governmental compliance (or both)
• In-situ performance test procedures
• Field tested advanced meter health and flow dynamics diagnostics
• Data collection and retention procedures
• All piping and the meter body must be sufficiently insulated for bubble-free flow
through the meter
1.8 Safety
The Daniel 3818 LNG Liquid Ultrasonic Flow Meter is suitable for use in U.L. Class 1, Division 1,
Group C and D hazardous locations.
EXPLOSION OR FIRE HAZARD
Read and follow the instructions below:
• Conduit runs must have a sealing fitting within 457mm (18 inches) of the enclosure to reduce the
risk of an explosion or a fire.
• During operation, keep covers tightly closed. DO NOT open the transmitter electronics
enclosures when an explosive atmosphere may be present.
• During equipment maintenance, disconnect power before opening the transmitter electronics
enclosures. Clean cover joints before replacing.
• DO NOT substitute meter components. Substituting components may compromise the intrinsic
safety of the device.
Failure to follow these safety instructions may result in severe injury to personnel or cause damage to
the equipment.