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

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Appendix A Scanner ® 2000 microEFM Wiring Diagrams Analog Inputs 1 and 2 The analog inputs, which can be configured for a 0-5 V, 1-5 V or 4-20 mA signal, can be used to receive readings from a pressure or temperature transmitter for use in AGA-7 gas calculations. Alternatively, they can be used to log measurements from any device with a 0-5 V, 1-5 V or 4-20 mA output. Transmitter power is provided by the Scanner 2000 only when the Scanner is externally powered. The output voltage equals the input voltage less 0.25 VDC, and is limited to 20 mA. If a 4-20 mA transmitter is used, a resistor must be added to the circuit, as shown in Figure A.15. The expansion board circuit will support a resistor range of 200 to 300 ohms; 250 ohms is recommended. A-10 ANALOG INPUT 1 (TB5) TB4 Expansion Board PN: 9A-30160014 TB8 TB7 IN+ IN- PWR 17 18 19 TB9 TB6 4-20 mA TRANSMITTER WIRING (CAN BE USED WITH ANALOG INPUT 1 OR 2) IN+ IN- PWR 17 18 19 TB5 Resistor Required (250-ohm recommended) TB5 POWER RETURN SIGNAL SIGNAL 1-5 VDC RETURN TRANSMITTER POWER 4-20 mA TRANSMITTER Figure A.15—0-5 V, 1-5 V and 4-20 mA analog input wiring 1-5 VDC TRANSMITTER ANALOG INPUT 2 (TB6) TB4 Expansion Board PN: 9A-30160014 TB8 TB7 20 21 22 TB9 IN+ IN- PWR TB6 TB5
Scanner ® 2000 microEFM Appendix A Pulse Input The pulse input provides an optically isolated input for high-amplitude pulse (frequency) signals, which includes signals from a turbine meter equipped with a preamplifier (Figure A.16, top diagram) or signals from a positive displacement meter (Figure A.16, bottom diagram). The Scanner 2000 can calculate flow from no more than two pulse (frequency) inputs at a time. Therefore, a pulse input can be used simultaneously with only one turbine input (main board or expansion board). The pulse input can also be used as a status input for monitoring a parameter via Modbus registers. See Pulse Input for Status Indication, page C-25, for details. PULSE INPUT (TB8) TB4 Expansion Board PN: 9A-30160014 TB8 TB7 25 26 TB9 TB6 TB5 PULSE INPUT/SWITCH (TB7 &TB8) TB4 Expansion Board PN: 9A-30160014 Figure A.16—Pulse input wiring TB8 TB7 23 25 24 26 TB9 TB6 TB5 PULSE INPUT 3 TO 30 VDC SWITCH CLOSURE TB7 AND TB8 ARE CONNECTED BY JUMPER; TB7 IS THEN WIRED TO THE SWITCH. A-11
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Table of Contents Scanner ® 2000 m
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Table of Contents Scanner ® 2000 m
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Section 1 Scanner ® 2000 microEFM
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Page 44 and 45: Section 2 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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