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10 Meter specifications
Section 1: Introduction Daniel 3818 LNG Liquid Ultrasonic Meter Installation Manual
May 2012 3-9000-771 Rev A
Digital, analog, and frequency outputs
Frequency/Digital
Output(s)
The meter has user-configurable selections for either a Frequency Output or Digital status
(FODO) (Also
see Section 3.6.1)
(3) Frequency/Digital Outputs
• FODO1 (four possible output configurations)
• FODO2(eight possible output configurations)
• FODO3(eight possible output configurations)
Frequency or Digital Output parameter pairs (
see Section 3.6.1)
Frequency or Digital Outputs (FODO 1) source selections:
• (FO1A, DO1A, FO1B, DO1B)
Frequency or Digital Outputs (FODO 2) source selections
• (FO1A, DO1A, FO1B, DO1B, FO2A, DO2A, FO2B, DO2B)
Frequency or Digital Outputs (FODO 3) source selections
• (FO1A, DO1A, FO1B, DO1B, FO2A, DO2A, FO2B, DO2B)
Mode options:
• Open Collector (requires external excitation supply voltage and pull-up resistor)
• TTL (internally powered by the meter 0-5 VDC signal)
Channel B Phase options:
• Lag forward, Lead reverse (Phase B lags Phase A while reporting forward flow, leads Phase A
while reporting reverse flow)
• Lead forward, Lag reverse (Phase B leads Phase A while reporting forward flow, lags Phase A
while reporting reverse flow)
Phase A and Phase B output (based on flow direction)
• Reverse flow - output only reports flow in the reverse direction. For frequency outputs,
Phase B of the output is 90 degrees out of phase with Phase A.
• Forward flow - output only reports flow in the forward direction. For frequency 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.
Table 1-2 Meter specifications