Chapter 8. HART Communications
76
Communications Options User’s Guide
•
Tracking windows (XMT868 only)
•
Minimum and maximum soundspeed (XMT868 only)
•
2-path error handling
•
Velocity averaging response time
•
Static density
•
Error handling
•
mA error level (if selected)
•
Clear totals
Note:
Refer to your User’s Manual for a complete description of each of the above functions.
When information is viewed through the HART device, the input variable always appears as either
Channel 1
Temperature or Channel 1 Pressure. Although these inputs are not necessarily assigned to Channel 1, the HART
protocol labels all inputs as channel-specific. For example, a Slot 1 analog input that is programmed at the meter as
a temperature input assigned to Channel 1, Channel 2, Both, or Neither is always reported by the HART device as a
Channel 1 Temperature input.
Note:
Inputs cannot be assigned using the HART device. Also, any input assigned as “Special” is always reported as
a Channel 1 Temperature input by the HART device
In addition to the functions listed on the previous page, the following procedures may be performed through the
HART device:
•
Calibration and setup of the HART option card analog output
•
Calibration and some programming of analog inputs, analog outputs, and RTD inputs on option cards installed in
Slots 0 (all), 1 (all), and 2 (GF868 only)
•
Viewing some of the flowmeter’s diagnostic parameters
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