Panametrics Sentinel LCT, User Manual

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Chapter 7. HART Communications
174 Sentinel LNG User’s Manual
7.3 Flowmeter Software Setup
Sentinel LNG ’s require no special setup procedures by the user. The meter automatically configures itself for HART
communication on startup. The analog output must be on, and the mode must be set to the desired state. See [I/O],
analog output menu.
In addition to setting up the HART variables and configuration, the analog output may be configured using either of
the following methods (if available):
•
the flowmeter keypad
• PanaView™ graphical user interface software
The choice of parameters must be limited to those listed in Table 14 on page 3. To use the HART device for
configuration of the analog output, refer to the instructions that came with that device.
Some flowmeter parameters can be read only by the HART device during startup. It is recommended that both the
flowmeter and the HART device be rebooted after any reprogramming of the HART parameters. Failure to do so may
result in erroneous information or a communication failure between the flowmeter and the HART device.
7.4 Product Interfaces
7.4.1 Process Interface
7.4.1.1 Sensor Input Channels
One to four pairs of acoustic transducers are connected to the device. Additionally, as many as three temperature,
pressure or density probes may be wired to the flowmeter. The temperature probe(s) can be either four-wire PT100
RTDs or, like the pressure sensors, 4-20 mA transmitters. Refer to the manuals for connection instructions.
7.4.1.2 Actuator Output Channels
No Sentinel LNG outputs are designated exclusively as external process-control actuators.