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 |
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| Temperature range | with humidity from +10°C up to +95°C |
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| Temperature distribution (spatial) | +/- 0.5 up to 2K |
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| Temperature sensor | 2 Pt100 sensors DIN Class A in 4-wire-circuit for mutual monitoring, taking over functions in case of an error |
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| 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) |
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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. |
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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 |
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| Timer | integrated timer for tempering profiles of up to 40 ramps each, each segment adjustable from 1 min. to 999 hrs. |
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| Calibration | three freely selectable temperature values, humidity 2-point calibration at 20% and 90 % rh |
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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 % |
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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 |
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| Documentation | integrated ring memory as data logger for GLP-conforming long-term documentation of all relevant parameters – 1024 kB |
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| Documentation | programme stored in case of power failure |
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| Programming | chip-card control incl. 1 MEMoryCard XL with 32 kB storage capacity (max. 40 ramps) |
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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 |
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| 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 |
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| Autodiagnostic system | integral fault diagnostics for temperature and humidity control |
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| Alarm | with visual and acoustic alarm in case of over-/under temperature and underhumidity, open door and empty water tank |
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Heating concept
| Door | door heating to avoid condensation |
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| Ring heater | high-performance ring heaters with optimised air circulation |
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| Cooling | twin compressor; refrigerant R449A |
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Standard equipment
| Works calibration certificate | standard values -20 °C and +160 °C, +30 °C at 60 % rh |
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| Door | fully insulated stainless steel door with double-locking and 4-point adjustment, heated |
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| Entry port | Entry port right, 80 mm, with stopper |
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| Internals | 1 stainless steel grid(s), electropolished |
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| Interior | Easy-to-clean stainless steel interior, materil 1.4301 (ASTM 304), hermetically welded |
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Stainless steel interior
| Volume | 256 l |
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| Dimensions | w(A) x h(B) x d(C): 640 x 670 x 597 mm |
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| Max. number of internals | 6 |
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| Max. loading per internal | 25 kg |
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Textured stainless steel casing
| Dimensions | w(D) x h(E) x d(F): 898 x 1730 x 1100 mm (d +50mm door handle) |
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| Installation | on lockable castors |
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| Housing | rear zinc-plated steel |
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Electrical data
| Electrical load | 400 V, 3ph. w/o N 16A, 50 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. |
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| Ambient temperature | 16 ºC to 28 ºC |
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| Humidity rh | max. 70 %, non-condensing |
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| Altitude of installation | max. 2,000 m above sea level |
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| Pollution degree | 2 |
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Packing/shipping data
| Transport information | The appliances must be transported upright |
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| Customs tariff number | 8419 8998 |
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| Country of origin | Federal Republic of Germany |
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| WEEE-Reg.-No. | DE 66812464 |
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| Dimensions approx incl. carton | w x h x d: 1020 x 1910 x 1310 mm |
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| Net weight | approx. 337 kg |
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| Gross weight carton | approx. 463 kg |
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Standard units are safety-approved and bear the test marks
Temperature-humidity working range CTC
Not all climate chambers are the same. The humidity content of the chamber load, the ambient conditions and the respective temperature-humidity working range are decisive factors in the selection of the right appliance. In the adjacent diagram, you can see the possible temperature/humidity combinations for our climatic test chamber CTC.
Within the respective temperature-humidity range, condensation-free permanent operation is possible. To which extent condensation may occur in the threshold range depends on the humidity content of the chamber load and the ambient conditions.
