Functions of RShch-1:

  • inputting and processing signals of thermal electric transducers, resistive temperature transducers, voltage sensors, current signal sensors, resistance sensors, as well as discrete signals;
  • recording and archiving values of input analog and discrete signals;
  • linearizing characteristics of thermal electric transducers and resistive temperature transducers;
  • extracting a square root from a value of a current input signal;
  • generating output discrete signals as functions of values and signs of transitions out of setpoints of input analog signals, values of input discrete signals, signs of RShch-1 state;
  • generating output discrete signals as functions of values and setpoints of input analog and discrete signals, signs of RShch-1 state;
  • showing measuring results and diagnostic information on a built-in TFT display as digital values, diagrams, and histograms;
  • monitoring connection of sensors.

Technical characteristics of RShch-1:

      • versions have been developed with 4, 8, 12, and 16 galvanically isolated universal input analog channels;
      • versions have been developed with 8, 16, and 24 galvanically isolated output analog channels;
      • time of inquiry of 16 channels – not more than 200 ms;
      • data exchange is carried out via an RS-485 interface;
      • error of measurement is 0.1 %;
      • data archiving time – from 2 days to 1 year (depending on an archiving interval);
      • possibility to save archive information to a USB drive;
      • environment temperature – from +5 °C to +60 °C

Key characteristics:

      • structural design assuring ease of installation and maintenance, as well as installation to places of displaying devices have been used earlier on NPP unit control boards;
      • ease of operation due to a user-friendly operator interface;
      • use of universal galvanically isolated input analog channels;
      • wide range of signals received from sensors;
      • two versions of a display with the dimensions 6.4" and 10.4".

Safety class – 2.
Safety category – А.

Protection degree: a front panel IP 54, a case – IP 20.

Implementation facilities:

Zaporizhzhya NPP

SRPA “Impulse” is a leading Ukrainian designer, manufacturer, and supplier of highly-reliable instrumentation and control systems for nuclear power engineering and railways.
We are on social media: