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Pre-Installation Test UMSITRAPDS3-1

November 2010

3-2

- +

4-20 mA

250

MG00358b

Vdc

1 Transmitter field terminals

2 Analog output terminals

3 Digital milliammeter

4 HART Communicator

5 Controller, recorder, indicator, or other 1-5 Vdc device

6 DC power supply

Note: Loop current can also be shown on the optional transmitter

display in 0-100%.

FIGURE 3-2 Field Test Connections

3.1.1 Test Equipment

TEST EQUIPMENT DESCRIPTION (see Specifications, Section 9.3)

Power Supply 10.5 to 45 Vdc, see Power Supply Requirements, Section 4.3.5

Multimeter:

Current Range: 4 to 20 mA to measure loop current

Voltage Range: 0-50 Vdc to measure power supply and loop voltage

Current Sense Resistor

250 to 1100Ω to support HART digital communications

Configuration Device Model 275 HART Communicator or Model 375 Field Communicator

Pressure Source Dead Weight Tester or similar device.

Note

Test equipment should be 2 to 10 times more accurate than the transmitter

accuracy.

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