Emerson Fisher FIELDVUE DVC6000, Инструкция по эксплуатации

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Installation
September 2013 2-29
Test Connections
WARNING
Personal injury or property damage
caused by fire or explosion may occur
if this connection is attempted in a
potentially explosive atmosphere, or
in an area that has been classified as
hazardous. Confirm that area
classification and atmosphere
conditions permit the safe removal of
the terminal box cap before
proceeding.
Test connections inside the terminal box can be used
to measure loop current across a 1 ohm resistor.
1. Remove the terminal box cap.
2. Adjust the test meter to measure a range of 0.001
to 0.1 volts.
3. Connect the positive lead of the test meter to the
TEST + connection and the negative lead to the TEST
−
connection inside the terminal box.
4. Measure Loop current as:
Voltage (on test meter)
1000 = milliamps
example:
Test meter Voltage X 1000 = Loop Milliamps
0.004 X1000 = 4.0 milliamperes
0.020 X 1000 = 20.0 milliamperes
5. Remove test leads and replace the terminal box
cover.
Communication Connections
WARNING
Personal injury or property damage
caused by fire or explosion may occur
if this connection is attempted in a
potentially explosive atmosphere or in
an area that has been classified as
hazardous. Confirm that area
classification and atmosphere
conditions permit the safe removal of
the terminal box cap before
proceeding.
A HART communicating device, such as a 475 Field
Communicator or a personal computer running
ValveLink software communicating through a HART
modem, interfaces with the DVC6000 digital valve
controller from any wiring termination point in the 4-20
mA loop. If you choose to connect the HART
communicating device directly to the instrument,
attach the device to the LOOP + and LOOP
−
terminals or to the TALK + and TALK
−
connections
inside the terminal box to provide local
communications with the instrument.
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