Explosion-proof digital thermoregulator RIZUR-DCS-2

The RIZUR-DCS-2 explosion-proof digital thermoregulator manufactured by OOO «NPO RIZUR» complies with ТU-3443-001-12189681-2014, GOST R МEК 60079-0-2011, GOST R МEК 60079-11-2010, GOST IEC 60079-1-2011 standards for electric equipment with explosion protection type “Flameproof Enclosure (d)”, “Intrinsically Safe Circuit (i )”, “Intended for Use in Explosive Gas Atmospheres ”, and has 1Exd[iaIICGa]IIBT6GbX explosion-proof marking. RIZUR-DCS-2 is supplied together with digital temperature sensors RIZUR-DT with 0ExiaIICT6GaX explosion-proof marking. According to the explosion-proof marking, Ch. 7.3 of Electrical installation code (PUE) and other regulations governing the use of electrical equipment in ex-areas, the heater is certified for use in ex-areas of internal and external facilities.

Intended use and application area

The RIZUR-DCS-2 explosion-proof digital thermoregulator manufactured by OOO «NPO RIZUR» complies with ТU-3443-001-12189681-2014, GOST R МEК 60079-0-2011, GOST R МEК 60079-11-2010, GOST IEC 60079-1-2011 standards for electric equipment with explosion protection type “Flameproof Enclosure (d)”, “Intrinsically Safe Circuit (i )”, “Intended for Use in Explosive Gas Atmospheres ”, and has 1Exd[iaIICGa]IIBT6GbX explosion-proof marking. RIZUR-DCS-2 is supplied together with digital temperature sensors RIZUR-DT with 0ExiaIICT6GaX explosion-proof marking. According to the explosion-proof marking, Ch. 7.3 of Electrical installation code (PUE) and other regulations governing the use of electrical equipment in exareas, the heater is certified for use in ex-areas of internal and external facilities. Safety of the digital thermoregulator at explosion-hazardous areas is proved by the Customs Union’s Certificate of compliance, “On safety of equipment operating in explosive areas ” №.TC RU C-RU.ME92.V.00234, and Certificate of compliance with Industrial safety requirements № С-RTE.002.TU.00198

Design description and functions

Explosion-proof digital thermoregulator RIZUR-DCS-2 is a compact unit with a display and control buttons designed to control any actuators (heating devices: a radiator, a heating cable, a water heating system, etc.; valves, contactors, valve drivers, etc.). RIZUR-DCS-2 temperature regulator is shipped together with temperature sensors, in accordance with the customer’s technical specifications.

When controlling actuators, switching the power supply on and off depends on the temperature settings e.g., while working with heating systems, the thermoregulator automatically disables the power supply of the heater when the preset ambient temperature in the box or on the surface of the equipment is achieved, and, accordingly, enables the power supply when the temperature drops lower than the preset minimum value. Similarly, different actuators are controlled in accordance with temperature settings.

The explosion-proof digital thermoregulator processes data received from the temperature sensors connected to it: 

  • surface temperature sensor of any heating element

  • air temperature sensor (in a heating enclosure or cabinet, in internal facilities, etc.)

The base version of RIZUR-DCS-2 is designed to control the operation of one heater. Versions operating with two heaters are also available. In this case, the thermoregulator will control the surface temperature of both of the heaters connected to it, and the temperature will be regulated when any of the heaters reaches the critical state.

Please note: this version has a number of specific technical features. Please study the design documentation carefully or negotiate exact specifications before purchasing or using the equipment.

RIZUR-DCS-2 can work both autonomously and together with external regulators or other devices (including a computer) that support Modbus RTU protocol, RS-485 physical communication channel. RIZUR-DCS-2 temperature regulator has an extra relay output for temperature alarm, to signal if the temperature surpasses the preset limits.

Modbus RTU protocol makes it possible to control the preset values and receive information about the following heating system parameters:
  • Current ambient temperature in the enclosure (cabinet)
  • Current surface temperature of the heater
  • Preset ambient temperature
  • Preset temperature limit for the heater surface;
  • Preset ambient temperature limit for the relay output
  • Temperature regulator

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RIZUR-DCS-2 Thermoregulator
Installation area General industrial facilities
Ex-areas V-1а and V-1g, acc. to Electrical installation code (PUE), Ch. 7.3
Explosion-proof marking 1 Exd [ia IIC Ga] IIB T6 Gb X
Ingress protection IP68 acc. to GOST 14254-96
Display LED
Control buttons Hermetically sealed switches
Local control Magnetic pen
Interface protocol Modbus RTU
Physical communication channel RS-485
Preset temperature limit alarm Relay, changeover dry contact, 1А
Operating mode transition time after resetting 15 seconds
Heater surface temperature -30°C…+110°C, an increment of 1°С 
Temperature maintained inside -40°C…+110°C, an increment of 1°С 
Total capacity of connected actuators From 5 W to 5 000 W
Supply voltage 220 (±15%) V (other is possible upon request)
Power consumption 5 W
Ambient temperature -60°C…+50°C
Warranty period 24 months
Average operation time  Over 10 years
RIZUR-DT sensor
Sensor type  Digital
Explosion-proof marking 0 Exia IIC T6 Ga X
Measuring range of the digital sensor -55°С...+125°С, range extensions is possible on request - Pt100 analogue platinum sensors are used (+200°С...+600°С)
Measurement accuracy of the digital sensor ±0,5°С in the range of -10°С...+85°С,
±3°С in the range of -55°С ... -11°С and +86°С ... 125°С
Warranty period 24 months 
Average operation time Over 15 years

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