Chapter 5. Hart Communications; Introduction; Wiring The Hart Interface - GE Measurement Sentinel LCT4 User Manual

Chapter 5. HART Communications

5.1

Introduction

The Sentinel LCT4 generates a 4-20 mA analog output signal that enables two-way communication with a HART
communication device.
5.2

Wiring the HART Interface

Interconnect the HART interface and the HART device as shown in either Figure 46 or Figure 47 below.
Sentinel™ LCT4 User's Manual
HART
Communications
Device
Figure 46: HART Wiring (External Power Supply/Passive Mode)
HART
Communications
Device
Figure 47: HART Wiring (Internal Power Supply/Active Mode)
Aout +
250
ohms
Aout –
–
+
24 Volt DC
Power
Supply
Aout +
250
ohms
Aout –
Chapter 5. HART Communications
Flowmeter
Terminal
Board
Connector
Flowmeter
Terminal
Board
Connector
87