Description:
Memmert environmental test chambers guarantee the perfect atmosphere for climate and temperature tests.
Features:
Environmental test chambers CTC256
Standard delivery Environmental test chambers
On this page, you can find all the essential technical data on the Memmert environmental chamber CTC for climate testing and temperature testing. Our customer relations team will be pleased to help if you want further information. If you should require a customised special solution, please contact our technical specialists at sales@memmert.com.
Temperature
Setting accuracy temperature | up to 99.9 °C: 0.1 / from 100 °C: 0.5 |
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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 % |
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Humidification | By hot steam generator. Humidity supply with water (only for demineralised water with a conductivity of 5 to 10 μS/cm and a pH value between 5 and 7) from 2 x 10 l tank on telescopic slide integrated in chamber, with automatic change-over. |
Control technology
Controller | Electronic microprocessor temperature controller with auto-diagnostic system |
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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 |
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Fan control | depending on operation status automatic adaption of fan speed resp. manual adjustment from 10 to 100 % |
Communication
Interface USB | USB-interface incl. Memmert software “Celsius” for programming and documentation |
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Interface Printer | parallel printer interface (incl. real time clock with date function) for all PCL3-compatible ink jet printers for GLP-conforming documentation |
Documentation | integrated ring memory as data logger for GLP-conforming long-term documentation of all relevant parameters – 1024 kB |
Documentation | programme stored in case of power failure |
Programming | chip-card control incl. 1 MEMoryCard XL with 32 kB storage capacity (max. 40 ramps) |
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 |
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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
Ring heater | high-performance ring heaters with optimised air circulation |
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Door | door heating to avoid condensation |
Cooling | twin compressor; refrigerant R449A |