Technical data

If an input is fixed, then its value is specified via a data point (SpecFlowPressure,

SpecFlowTemperature).

Alarm limits can be specified for each input (LowPressureAlarm, HighPressureAlarm,

LowTemperatureAlarm, HighTemperatureAlarm). Additionally, the flow-condition

pressure is configurable to be gage or absolute (via the InputPressureUnit data point).

If the pressure is gage, then the atmospheric pressure must be specified (via the

AtmosphericPress data point).

Another data point (FlowPOrTSrcUponAlarm), common to both pressure and

temperature, is used to specify the data source to use when the selected input data is

invalid (i.e., value at or outside its alarm limits or a live input in calibration) as either

• last good value (0), or

• fixed value (1).

This data point (FlowPOrTSrcUponAlarm) is configurable via the Daniel MeterLink Tools|Edit/

Compare Configuration screen. The default parameter is to use the “last good value”.

Configure meter temperature expansion corrections

Enable Live or Fixed for Temperature for meter corrections and Temperature

expansion correction on the Meter|Field Setup Startup page.

2. Click Next until the Field Setup Wizard - Meter Corrections page displays.

3. Enter the linear expansion coefficient of the meter body material.

Daniel Liquid Ultrasonic Flow Meters calibration and configuration parameters

54 Daniel 3810 Series Operations Manual