Scanner 2000 Steam Mass Flow Transmitter ... - Spirax Sarco

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Section 2 Scanner ® 2000 microEFM 36 Hazardous location wiring Static pressure input (manifold equalizer valve must remain open) 10 pipe diameters upstream Conduit seal (required for hazardous area installations) H L 5 pipe diameters downstream Flow Figure 2.7—Remote-mount installation in an AGA-7 turbine meter run Manifold Model 21 explosion-proof RTD assembly or equivalent 6. Install the RTD assembly in the thermowell. Remove the plug from the other conduit opening in the top of the Scanner 2000 enclosure, route the RTD assembly cable through the conduit opening in the top of the Scanner 2000, and connect it to the main circuit board. A wiring diagram for the RTD assembly is provided in Figure 3.5, page 64. Note If additional inputs/outputs or communication connections are required, a condulet box should be added to the installation. 7. Zero the static pressure and recalibrate the static pressure, if required. See the ModWorX Pro Software User Manual, Part No. 9A-30165025, for complete instructions. See also Zero Offset (Static Pressure or Differential Pressure), page 53, and Static Pressure Calibration and Verification, page 53. CAUTION Do not put the Scanner into operation until the valves are positioned properly so that pressure is supplied to both sides of the MVT. For instructions on proper valve positions, see Placing the Scanner into Operation, page 55.
Scanner ® 2000 microEFM Section 2 Installation Procedure—Direct Mount to a Turbine Meter (CSA Compliant) A Scanner 2000 without the MVT bottomworks can be mounted directly to a gas turbine meter for measuring natural gas. A pipe adapter and union are attached to the Scanner, allowing a direct connection to the turbine meter. An external explosion-proof pressure transducer is required for converting the pressure to a 4-20 mA or 1-5V signal, and the Scanner 2000 must be equipped with the optional expansion board, which provides the analog input necessary to receive the pressure signal from the transducer. Adapter/union (CSA-approved) 10 pipe diameters upstream (minimum) Flow 5 pipe diameters downstream (minimum) Figure 2.8—Direct-mount installation for use with a gas turbine meter External explosion-proof pressure transducer (connected to meter pressure port) Model 21 explosion-proof RTD assembly or equivalent To connect the Scanner 2000 to a turbine meter using this method, perform the following steps: 1. Position the Scanner 2000 above the gas turbine flowmeter. 2. Plug the Scanner 2000 cable connector into the magnetic pickup of the turbine meter and hand-tighten the knurled nut on the connector. 3. Screw the Scanner 2000 onto the flowmeter threads surrounding the magnetic pickup with the display facing the desired direction. 4. Tighten all sections of the pipe union. 5. Connect the pressure port of the turbine meter to the external pressure transducer. 6. Remove the plug from the conduit opening in the top of the Scanner 2000 enclosure, route the cable from the pressure transducer through the opening, and connect it to the analog input terminal of the expansion circuit board. A wiring diagram for the analog input is provided in Figure A.15, page A-10. In hazardous environments, the cable must be routed through conduit and conduit seals must be installed within 18 inches of the turbine meter and within 18 inches of the Scanner 2000. 37
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Appendix A Scanner ® 2000 microEFM
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Appendix B Scanner ® 2000 microEFM
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Appendix C Scanner ® 2000 microEFM
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Scanner 2000 Steam Mass Flow Transmitter ... - Spirax Sarco

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