Memmert TTC256 temperatuur testkast -42 tot 190°C 256 liter

Memmert TTC256 testkamer -42 - +190°C 256 liter

Toepassingen

• materiaaltesten
• houdbaarheidstesten

Standaard delivery climatic test chamber

100% AtmoSAFE: The high flyer for climate testing (or temperature testing) simulates according to standards the perfect atmosphere and reduces the time needed through rapid temperature changes: Medium speed at a temperature change in heating operation 10 K/min, average speed for a temperature change in cooling operation from +190°C to 0°C: 6 K/min.

Ventilation & control

• high-performance air fan in working chamber
• depending on operation status automatic adaption of fan speed resp. manual adjustment from 10 to 100 %
• adaptive, fuzzy-supported multifunctional digital microprocessor PID-controller
• integral fault diagnostics for temperature control
• 2 Pt100 sensors Class A in 4-wire-circuit, mutually monitoring and taking over the performance at the same temperature value
• digital 7-day programme timer with real time clock, precise minute setting
• integrated timer for tempering profiles of up to 40 ramps each, each segment adjustable from 1 min. to 999 hrs.
• digital display of all set parameters, such as temperature, weekdays, time, fan speed, air flap position, programme status and set-up values - language to be chosen via set-up
• 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)
• calibration facility through controller for three freely selectable temperature values
• 2 x 10 l tanks as condensate collector
• integrated ring memory as data logger for GLP-conforming long-term documentation of all relevant parameters - 1024 kB
• programme stored in case of power failure
• parallel printer interface (incl. real time clock with date function) for all PCL3-compatible ink jet printers for GLP-conforming documentation
• USB-interface incl. Memmert software "Celsius" for programming and documentation
• chip-card control incl. 1 MEMoryCard XL with 32 kB storage capacity (max. 40 ramps)
• incl. works calibration certificate for -20°C and +160°C
• high-performance ring heaters with optimised air circulation
• door heating to avoid condensation

Cooling concept

• twin compressór
• speed ajdustable condenser fan

Refrigerant R449A significantly more climate-friendly than R404A

The refrigerant R404A is only permitted without restriction until 31 December 2019 due to its high Global Warming Potential. In order to ensure that both the climate test chamber CTC as well as the temperature test chamber TTC can also be operated beyond this date, Memmert has reacted early by switching to the refrigerant R449A from April 2018 on. Existing appliances can also be converted to the new refrigerant in the "drop-in" or "retrofit" process, depending on the application.

Multiple overtemperature protection

• with audible and visual alarm
• over- and undertemperature monitor TWW, protection class 3.3 or adjustable temperature limiter TWB, protection class 2, adjustable at controller
• with audible and visual alarm in case of over-/under temperature and open door
• 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
• mechanical temperature limiter TB, protection class 1 according to DIN 12880 to switch off the heating approx. 10°C above nominal temperature

Textures stainless steal casing

• w x h x d: 898 x 1730 x 1100 mm
• fully insulated stainless steel door with double-locking and 4-point adjustment, heated
• rear zinc-plated steel
• on lockable castors

Interior - heating concept

• w x h x d: 640 x 670 x 597, 256 l
• easy-to-clean stainless steel interior, materil 1.4301 (ASTM 304), hermetically welded
• 1 stainless steel grid

Temperature

• without humidity: from -42°C up to +190°C
• Average heating up speed 10 K / minute -40°C to +180°C
• Average cooling down speed 5 K / minute +190°C to 0°C
• Average cooling down speed 3 K / minute +180°C to -40°C
• Heating up time 20 minutes from -40°C up to +180°C (98 % of setpoint)
• Cooling down time 95 minutes from +180°C to -40°C (98 % of setpoint)
• Temperature variation in time +/- 0.2 to 0.5 K
• Temperature distribution (spatial) +/- 0.5 up to 2K

Voltage / power rating

• 400 V, 3 phases/N, 50 Hz / approx. 7.000 W