Emerson Daniel 3818, Installation Manual

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Table 1-2: Meter specifications
(continued)
Liquid meter specifications
outputs, Phase B of the output is 90 degrees
out of phase with Phase A.
• Absolute - output reports flow in both
directions. For frequency outputs, Phase B of
the output is 90 degrees out of phase with
Phase A.
• Bidirectional - output reports flow on Phase
A only in the forward direction and on Phase
B only in the reverse direction.
Maximum frequency for the frequency outputs:
• 1000Hz
• 5000Hz
Analog Output(s)
• (2) 4-20 mA independently configurable
analog outputs
The analog output zero scale offset error is
within ±0.1% of full scale and gain error is within
±0.2% of full scale. The total output drift is
within ±50 ppm of full scale per °C.
1.8 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
1.9 Safety conditions
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.
Installation manual Introduction
3-9000-771 May 2019
Installation manual 23