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Signal Conditioners

Nivelco Process Control Co

  • Galvanic isolator / current / analog input / inherently safe

UNICONT PKK

Article: 00124259

Galvanic isolator / current / analog input / inherently safe

UNICONT PKK - (Current Controlled Switch) : SYSTEM COMPONENTS

GENERAL DESCRIPTION:

The UNICONT PKK-312 series is a 4-20 mA current controlled limit switch featuring intrinsically safe galvanic isolation. The input 4-20 mA signals can be transferred from passive or active outputs of 2- or 4-wire transmitters. The value of the input signal will be compared in the unit with the set (taught) value and the state of the galvanically isolated relay changes in accordance with the comparison mode programmed. The double throw output relay can be programmed for the following functions: Limit switch (high or low fail safe), ON-OFF control with selectable switching difference, Monitoring of discontinuity or short-circuit of the cable, Window comparison operation mode with energised or de-energised relay state, Monitoring of discontinuity or short-circuit of the cable. The UNICONT PKK-312-8 Ex is a special version, designed to cooperate with Ex rated NIVOSWITCH vibrating fork level switch, as an intrinsically safe power supply and amplifier unit.

FEATURES:

* Suitable interface for devices having 4-20mA output
* Can power 2-wire transmitters
* Input: 4-20mA
* Power relay output (SPDT, 8A rated)
* Galvanic isolation
* Limit, differential or window switch capabilities
* Programmable damping
* Ex ia models

APPLICATIONS:

* Power supply unit, switching amplifier and galvanic isolator for any 2-wire transmitter
* Wire state monitoring
* ON-OFF control
* Power supply unit for any 4-wire transmitter
* Switching amplifier in connection with a 4-wire active transmitter

APPROVALS:

* ATEX II (1)G [EEx ia] IIB
* ATEX II (1)G [EEx ia] IIC

Specifications

  • Type: galvanic
  • Electrical characteristics: current
  • Other characteristics: analog input, inherently safe

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