OXITEC^® 5000 / COMTEC^® 6000 Analyser are available with HART Interface

The more complex a production process is, the more importantly it is to supervise it from a central control room. This is now possible with the use of the HART communications protocol. In comparison to an analogue interface, not only will the measured values transfer, but all relevant analyser parameters such as: cell voltage, cell temperature, cell constant, cell slope and any error messages or alarms. This leads to a faster error analysis and thus to lower operating and maintenance costs. 

The HART protocol makes it possible to calibrate the OXITEC^® 5000 and COMTEC^® 6000 analyser systems from the control room and to switch the analyser measuring range, which again reduces maintenance costs. This "remote control" facility is particularly useful with hazardous area explosion-proof EExd systems, since the opening of the electronic housing in a classified hazardous area  can easily be avoided. 

Another advantage results from the installation of the system. The amount of cabling is minimized and therewith potential malfunction sources are eliminated.

Operating Mode 

The HART protocol (Highway Addressable Remote Transducer) permits a simultaneous transmission of digital information and analogue current signal. The HART signal will be overlaid on the analogue current signal with an amplitude of +/- 0.5 mA.

HART is a master/slave communication protocol. Each communication is started from the master (display/operating unit e.g. process control system). The slave (the field equipment, in our case the OXITEC^® 5000 or COMTEC 6000^® electronic unit) interprets the received instruction electronic data, accomplishes the contained functions and sends back a reply electronic data signal with the result or inquired value. 

The schematic build-up

It is possible to upgrade existing OXITEC^® 5000 and COMTEC^® 6000 systems with a HART interface option by simply changing the electronics main circuit board. Contact ENOTEC or your local distributor for details.

Download area

HART Device Description and Capability Files

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