DC-20+

Dual-channel temperature controller.

  • 2 CONTROLLERS in one casing

  • 2 measuring inputs (two temperature sensors included)

  • 2 control outputs 16A

  • T1 i T2 displayed alternately

  • Maths functions (average and differential measurement)

  • Possibility of connecting REGULATORS (for example. output1=switched on, when output2=switched off)

  • Digital input for manual work or failure signalization

  • Built-in sound signaller (alarm)

Universal controller designed to temperature control in heating systems:

  • electrical heaters, stoves
  • heating cables, anti-icing systems
  • incubators, terrariums, aquariums
  • boilers, heaters, etc.
  • central heating and domestic hot water pumps
  • solar collectors
  • fireplaces with water jacket
  • servomotors with 2, 3, 4-way valve
  • car heating (webasto)

and cooling systems:

  • fridges, refrigerators, freezers, cooling counters
  • fans, coolers
  • car units (12V or 24V version), etc.
DC-20+ is de facto two temperature CONTROLLERS placed in one casing with possibility of optional inputs-outputs configuration and connecting both controllers. Device has 2 control inputs and 2 control outputs, which can work in HEATING and COOLING mode, and a measurement is registered from T1 or T2 sensor or both sensors at the same time.
Due to maths functions measurement from two sensors can be calculated as a difference [T2-T1] (applied in systems with solar collectors) or average [T1+T2]/2.
Controller is able to operate both in simple, single or double heating or cooling systems and also with more complicated applications.
Controller has digital temperature reading and display calibration function. Value from the sensor T1 and T2 is being displayed alternately every 3 seconds. Controller is able to display only one reading.
Built-in sound signaller is able to signal turning on the outputs and emergency states.
Digital input can acts as alarm input or manual mode control outputs. It is able to signal failure system after having an effect on external pressure switch or temperature limiter STB connected to digital input. In case of failure the whole system will hangs up with a possibility of maintain the failure status, up till manual reset button.
Controller is equipped with two high-powered 16A relays (maximum resistive load 3600W).

Specifications:

Input:
2 temperature sensors NTC 5kOhm at 25°C
digital input (normally opened or closed)
Measuring range:
-50...+150°C
Measuring accuracy:
+/-0,5°C
Sampling period:
330 ms
Display resolution:
0,1°C in whole range
Setting resolution:
0,1°C in whole range
Display:
LED, 4 digits, 11mm height with graphic icons  
Control form:
ON-OFF with hysteresis
Setting accuracy:
set-up in 0,1...20,0°C range
Control outputs:
2 relays 16A 3,6kW, durability 100 thousands cycles
Additional options:

 
- maths functions (difference, average measurement)
- possibility of choosing the  temperature channel to read from
- emergency  state sound signalling
- possibility of connection both outputs
Mounting hole:
71 x 29 mm
Degree and protection class:
depends on the distribution box
Power supply:
230VAC +/-15% or 12VAC/DC or 24AC/DC
Power consumption:
max 3 VA
Operation conditions:
-5...60°C; 0...85%RH (non-condensing)
Storage conditions:
-40...85°C; 0...85%RH (non-condensing)