Trade.Information

Product Name: Galvanic Isolators - WIS Range

Product Description

These highly versatile single and double channel switch repeaters are suitable for use with contacts with or without end-of-line (EOL) resistors, and with NUMUR proximity switches. They feature three port isolation together with comprehensive DIL switch selection of operating and fault options. There are both relay output and electronic output versions available. WIS1200
There are numerous models available in this range. The most common is the basic four terminal interfaces suitable for in-line use in the majority of straightforward installations or solenoids, audible alarms or visual alarms. Units can also be provided with Enable and Override controls inputs and having the ability to provide a reverse polarity output in response to a separate input signal. The WIS1221 provides a double channel driver in the same compact housing.

WIS1311
These units feature three-port isolation and are suitable for use with all standard 2-wire process transmitters designed for use with 28V, 300ohm, 93mA interfaces. Separate terminals are provided for inputs from self-powered 4-20mA sources, these terminals having the characteristics of simple apparatus- eliminating the need for system compatibility considerations. The model WIS1312 provides bi-directional communications between a field SMART transmitter and safe area communications equipment, while both models feature excellent response characteristics.

WIS1411
This interface is suitable for almost all analogue output duties in Group II hazards, including positioners, converters and indicating instruments. The provision of three-port isolation adds valuable application flexibility, while the particularly high output compliance allows two or more field devices to be driven in series from the one interface if the application demands. The good all-round performance specification includes excellent dynamic response and a wide operating supply voltage range.

WIS1611
This microprocessor controlled temperature converter provides an isolation interface for hazardous area thermocouples or RTD sensors and customer specified ranges may be easily programmed in the factory. The units deliver a linear 4-20mA output corresponding to the chosen temperature range, and millivolt input settings are also available to cater for low level transducer signals of many types.

E1500
These isolation interfaces have been introduced as an alternative to zener barriers for use with the RTK Multiplexer systems in earth-free installations. These units may also be used in the input connections to some intrinsically safe pulse counters, in which application they feature a bandwidth of 0-10kHz typical.

Company Details

After 30 years of successful development, RTK Instruments is firmly established as the leading specialist in the design and manufacture of process alarm equipment, displays and interface products. Our products are used in all ... more