5-11
5.6 HiD 2033/2034
Functional description
Repeats a 4-20 mA input signal from a control system to drive I/P converters, electrovalve actuators and displays
located in a Hazardous Area. Designed for high integrity applications, each channel is loop powered with a low
voltage drop and permits detection of line faults, by the control system.
A field open circuit presents a high impedance to the control device input to allow alarm conditions to be
monitored.
Model 2033 Model 2034
Application Guidelines
As any other loop powered isolator, the HiD 2033/HiD 2034 has a fail safe behaviour, i.e. if there is a loop supply
fault, the isolator output is de-activated.
The two HiD 2034 channels are completely isolated one each other. This means that single-loop integrity is
preserved also with the two-channels version.
The unit is designed to drive electro-mechanical valve positioners with a maximum impedance of 500 Ω. Please
contact Elcon when used with electronic valve positioners
A field open circuit presents a high impedance to the control device input to allow alarm conditions to be
monitored.
The unit can be used with all Elcon standard termination board
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