Quick Start Guide

Quick Start Guide
D103214X012
DLC3010 Digital Level Controller
September 2014
17
Communication Connections
WARNING
Personal injury or property damage caused by fire or explosion may occur if this connection is attempted in an area which
contains a potentially explosive atmosphere or has been classified as hazardous. Confirm that area classification and
atmosphere conditions permit the safe removal of the terminal box cap before proceeding.
The Field Communicator interfaces with the DLC3010 digital level controller from any wiring termination point in the
4–20 mA loop (except across the power supply). If you choose to connect the HART communicating device directly to
the instrument, attach the device to the loop + and - terminals inside the terminal box to provide local
communications with the instrument.
Test Connections
WARNING
Personal injury or property damage caused by fire or explosion may occur if the following procedure is attempted in an
area which contains a potentially explosive atmosphere or 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 an internal 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 + connection and the negative lead to the T 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.
Alarm Jumper
Each digital level controller continuously monitors its own performance during normal operation. This automatic
diagnostic routine is a timed series of checks repeated continuously. If diagnostics detect a failure in the electronics,