Environmental test chambers CTC256

    Memmert environmental test chambers guarantee the perfect atmosphere for climate and temperature tests

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Temperature:

  • Setting accuracy temperature up to 99.9 °C: 0.1 / from 100 °C: 0.5
  • Temperature range without humidity: from -42°C up to +190°C
  • Temperature range with humidity from +10°C up to +95°C
  • Temperature distribution (spatial) +/- 0.5 up to 2K
  • Temperature sensor 2 Pt100 sensors DIN Class A in 4-wire-circuit for mutual monitoring, taking over functions in case of an error
  • Display resolution of display for setpoint values 0.1°C up to 99.9°C, 0.5°C from 100°C and for actual values 0.1°C (LED)

Humidity:

  • Humidity control active humidifying and de-humidifying adjustable from 10-98 % rh with digital display of relative humidity - resolution of display 0.5 %, setting accuracy 1 %

Control technology:

  • Controller Electronic microprocessor temperature controller with auto-diagnostic system
  • Set-up Display digital display of all set parameters, such as temperature, weekdays, time, humidity, fan speed, programme status and set-up values - language to be chosen via set-up
  • Timer integrated timer for tempering profiles of up to 40 ramps each, each segment adjustable from 1 min. to 999 hrs.
  • Calibration three freely selectable temperature values, humidity 2-point calibration at 20% and 90 % rh

Ventilation:

  • Fan high-performance air fan in working chamber
  • Fan control depending on operation status automatic adaption of fan speed resp. manual adjustment from 10 to 100 % 

Safety:

  • Temperature control mechanical temperature limiter TB, protection class 1 according to DIN 12880 to switch off the heating approx. 10°C above nominal temperature
  • Temperature control over- and undertemperature monitor TWW, protection class 3.3
  • AutoSAFETY additionally integrated over- and undertemperature protection "ASF", automatically following the setpoint value at a preset tolerance range, alarm in case of over- or undertemperature, heating is switched off in case of overtemperature, compressor in case of undertemperature
  • Autodiagnostic system integral fault diagnostics for temperature and humidity control
  • Alarm with visual and acoustic alarm in case of over-/under temperature and underhumidity, open door and empty water tank

Heating concept:

  • Door door heating to avoid condensation
  • Ring heater high-performance ring heaters with optimised air circulation
  • Cooling twin compressor; refrigerant R449A
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