Sensia QRATE Scanner 3300, Инструкция по установке, эксплуатации и обслуживанию

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4. Tighten all sections of the pipe union.
5. Connect the pressure port of the turbine meter to the external pressure transducer.
6. Route the cable from the pressure transducer through an opening, and connect it to the analog input terminal of the
MVT. A wiring diagram for the analog input is provided in Input Wiring, page 53 .
7. Install the RTD assembly in the thermowell. Remove the plug from the unused conduit opening in the top of the
MVT enclosure, route the RTD assembly cable through the conduit opening in the top of the MVT, and connect it to
the main circuit board. A wiring diagram for the RTD assembly is provided in Figure 3.8, page 54 .
8. Wire outputs or COM connections from the MVT to the inputs or COM connections on the back of the QRATE
Scanner 3300.
Installation Procedure—Remote Mount to a Turbine Meter
A MVT can be mounted remotely and connected to a gas turbine meter for measuring gas in accordance with AGA 7 cal -
culations. Figure 2.14 shows an installation in which the pressure input is provided by the MVT. The setup of the meter
run and plumbing configurations can vary widely, depending upon the challenges existing on location.
Flow
Manifold
Static pressure input
(manifold equalizer valve
must remain open)
H L
RTD assembly
10 pipe diameters
upstream
5 pipe diameters
downstream
3/4” conduit
connection
(for input/output and
communications)
Figure 2.14 - Remote-mount installation in an AGA 7 turbine meter run
To connect the MVT to a turbine meter, perform the following steps:
1. Verify that the flowmeter and magnetic pickup are installed in the flow line.
2. Mount the MVT to a 2-in. pipe using the mounting bosses on the side of the enclosure and a Sensia pole mount kit.
See Multi Variable Transmitter Mounting, page 20 for detailed mounting instructions.
3. Bolt a 3-valve flange-by-NPT manifold (as recommended by Sensia) to the MVT sensor. Position the manifold so
that all valves are accessible from the front of the instrument.
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QRATE Scanner 3300 integrated control flow computer Section 2