HART Protocol

Crowcon has introduced the HART Communication Protocol for its IRmax infrared (IR) hydrocarbon detector. The protocol is available with the IRmax in two formats: Local hand-held communicator connection. In this format, HART communicators are used for maintaining and calibrating a host of instruments. Staff can use a common communicator to maintain all of their safety and process instruments.

The user simply needs to upload and install the DD (Device Description) file to their communicator to access a range of IRmax functions and displays, alarm thresholds and diagnostic information. HART over a 4-20mA signal line.

Here, the safety function is performed by the 4-20mA signal (connected to a conventional controller or PLC/ DCS). A HART device can also be connected in parallel with the signal connections to read the detector's status information.

Featuring dual-wavelength IR sensor technology, the compact IRmax detects methane and other potentially explosive hydrocarbons.