Section 4: Configuring a 3818 LNG Meter

Daniel 3818 LNG Liquid Ultrasonic Meter Installation Manual

May 2012

3-9000-771 Rev A

 

 

4.After all of the data shown below is entered, click Apply to write the parameters to the meter.

a.Click the Frequency/Digital Outputs tab to configure Frequency/Digital Output 1, 2 and 3 Source and drive Mode. Select the Source for each Frequency/Digital output and select the desired drive Mode. The Mode options are Open Collector which requires an external excitation voltage and pull-up resistor or TTL mode which outputs a 0-5 VDC signal (each Frequency output has an A and B output phase). (Refresh Note: If changes are made to any Source variable on this page, apply the changes and navigate to the Guided Setup page. Navigate back to the Manual Setup for the changes to be reflected in other Manual Setup pages).

b.Click the Frequency and Digital Output 1 tab to configure the Content, (flow) Direction, Channel B Phase frequency output, Lag forward, Lead Reverse or Lead Forward, Lag Reverse (Phase B lags Phase A while reporting forward flow and lead Phase A while reporting reverse flow or the opposite), Digital Output 1 Channel A Content and Polarity, Channel B Content and Polarity, Maximum Frequency, and Lower and Upper Range Units of Measure.

c.Click the Frequency and Digital Output 2 tab and repeat Step 3b to configure Frequency and Digital Output 2 parameters.

5.Click Setup HART to configure the HART parameters (tag, date, descriptor, message text, Final Assembly number, Poll address and number of response preambles are displayed). After all of the data is entered click Apply to write the parameters to the meter.

6.From the AMS Device Manager Overview page, click Zero Flow Meter. Set the low flow volume threshold cutoff. If the average flow velocity for a batch is below this value, the volume accumulated is set to zero.

Figure 4-7 AMS Device Manager - Zero Flow

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Using AMS Device Manager to configure the meter