Environmental Test Chamber CTC256
| Temperature range | without humidity from -42°C up to 190°C |
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| Temperature range | with humidity from 10°C up to 95°C |
| Temperature distribution (spatial) | /- 0.5 up to 2K |
| Temperature | 2 Pt100 sensors Class A in 4-wire-circuit, mutually monitoring and taking over the performance at the same temperature value |
| 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
| Humidification | humidification by hot steam generator |
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| 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 % |
| Humidification | By hot steam generator. Humidity supply with distilled water from 2 x 10 l tank on telescopic slide integrated in chamber, with automatic change-over. |
| Dehumidification | 2 x 10 l tanks as condensate collector |
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 |
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 or adjustable temperature limiter TWB, protection class 2, adjustable at controller |
| 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 |
|---|---|
| Door | door heating to avoid condensation |
| Cooling | twin compressor; chlorine-free refrigerant R404A |
Standard equipment
| Internals | 1 stainless steel grid(s), electropolished |
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| Works calibration certificate | standard values 10 °C and 37 °C, 60 % rh at 30 °C |
| Door | fully insulated stainless steel door with double-locking and 4-point adjustment, heated |
| Interior | easy-to-clean stainless steel interior, materil 1.4301 (ASTM 304), hermetically welded |
Stainless steel interior
| Volume | 256 l |
|---|---|
| Dimensions W x H x D in mm | w(A) x h(B) x d(C): 640 x 670 x 597 mm |
| Max. number of internals | 6 |
| Max. loading per internal | 25 kg |
Textured stainless steel casing
| Installation | on lockable castors |
|---|---|
| Dimensions | w(D) x h(E) x d(F): 898 x 1730 x 1100 mm |
| Housing | rear zinc-plated steel |
Electrical data
| Electrical load | 400 V, 3 phases, 50/60 Hz / approx. 7000 W |
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Ambient conditions
| Set Up | The distance between the test chamber and the walls/ceiling must be at least 25 cm. |
|---|---|
| Ambient temperature | 16 ºC to 28 ºC |
| Humidity rh | max. 70 %, non-condensing |
| Altitude of installation | max. 2,000 m above sea level |
| Pollution degree | 2 |
Packing/shipping data
| Transport information | The appliances must be transported upright |
|---|---|
| Customs tariff number | 8419 8998 |
| Country of origin | Federal Republic of Germany |
| WEEE-Reg.-No. | DE 66812464 |
| Dimensions approx incl. carton | B x H x T: 1020 x 1910 x 1310 mm |
| Net weight | approx. 337 kg |
| Gross weight carton | approx. 463 kg |
