KROHNE OPTISWIRL 5080 Handbook page 40

Vortex flowmeter for high temperature applications

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Table of Contents

ELECTRICAL CONNECTIONS

Figure 4-7: Wiring a flowmeter with a pulse output transistor switch (sinking) counter input with external power supply

and pull-up resistor

1 1/2 NPT or M20 conduit connection (2 places)

2 Internal ground terminal (connect a ground wire in accordance with local practice)

3 PE ground (required for explosion-proof applications)

4 External ground terminal

5 HART Communicator or PC-based configurator (at least 250 Ω total resistance between configurator

and power supply

6 Optional shielded wire (if used, terminate the shield at the negative terminal of the power supply)

7 Optional ground (grounding the loop at the negative terminal of the power supply is recommended but not required)

8 Receiver

9 Power supply

10 Load resistor (max. pulse output current is 20 mA; load resistor must be sized accordingly)

Figure 4-8: Wiring a flowmeter with a pulse output transistor switch (sinking) counter input with external power supply