Dual HART Isolator - DHI733

Dual HART Isolator - DHI733

The DHI733 combines two fully independent HART® transparent isolator channels in one housing. Optional 10A rated trippoint for monitoring and alarming is available on channel 2.

The DHI733 can be used in a number of ways:

• Two channel isolation of HART® transmitters.
• Series connect the inputs to split the input signal into two isolated full drive output signals while still maintaining the digital HART® communication.
• Split one HART® transmitter into an isolated HART® transmitter output plus a conditioned analogue process signal to drive meters or other devices.

Channel 1 is 4-20mA HART® transparent input and output.

Channel 2 is 4-20mA HART® transparent input and output or a coding plug configurable output for common process signals.

Final calibration of the mA signal can be trimmed by using the front accessible SPAN (S) and ZERO (Z) potentiometers. The optional alarm point on channel 2 is also set by potentiometer utilising the adjacent test socket. The wide swing DC/DC converter allows for two power supply ranges: 10-60Vdc (16-42Vac), 80-280Vac (80-300Vdc). Isolation is 2kVr.m.s. between all 6 ports. Connection is via unpluggable 8-way screw terminals.

Input

dc Current/Voltage

Functions

Isolator

Transmitter

Output

dc Current/Voltage - Separate Power