Climatic Test Chamber
Model CTC 256
Standard equipment
Ventilation and 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
autodiagnostic system with fault indication on temperature and humidity 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 segment adjustable from 1 min. up to 999 hours
digital display ( LED) of all set parameters, such as temperature, weekdays, time, humidity and set-up values - language to be chosen in setup
digital display of set values ( resolution: 0, 1° C below 99, 9° C, 0, 5° C above 100° C) and actual values ( resolution: 0, 1° C) of temperature ( LED)
active control for humidifying and dehumidifying ( 10-98% rh) with digital display of relative humidity - resolution of display: 0, 5% , setting accuracy: 1%
humidity supply with distilled water from 2 tanks integrated in unit on telescopic slide with automatic change over
2 x 10 l tanks as condensate collector, on telescopic slide
long-term logging ( ring store) of all relevant data, GLP-conforming as data logger - 1024 kB
programme stored on power failure
parallel printer interface ( incl. real-time clock with date function) for printing logging files, suitable all PCL3-compatible ink-jet printers ( USB available via converter, see accessories)
USB interface including MEMMERT Software " Celsius " for programming and documentation
chip card control incl. one MEMoryCard XL with 32 kB ( up to 40 ramps)
incl. works calibration certificate for -20 ° C and + 160 ° C
incl. works calibration certificate for + 30° C at 60% rh
Heating Concept
high-performance ring heaters with optimised air circulation
door heating to avoid condensate
Cooling Concept
twin compressor
speed adjustable condenser fan
chlorine-free refrigerant R404A
Multiple Overtemperature Protection
with audible and visual alarm in case of over-/ undertemperature and over-/ underhumidity, open door and empty water tank
independently working, digitally adjustable electronic overtemperature controller TWW, protection class 3.3
additional integral over- and undertemperature protection " ASF " ( Auto-Safety-Function) automatically following the set value at a preset tolerance range
mechanical temperature limiter TB protection class 1 switching the heating off at approx. 10 ° C above max. oven temperature
Textured Stainless Steel 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 castors
Interior
w x h x d: 640 x 670 x 597 mm, 256 l
easy-to-clean interior, made of stainless steel, material no. 1.4301 ( ASTM 304) , hermetically welded
1 stainless steel grid
3-layer-high-tech-insulation
lateral entry port, right, 80 mm diam. with silicone plug
Halogen interior lighting 2 x 25 W, switchable
Temperature Range
with humidity control: from + 10 ° C up to + 95 ° C
without humidity control: from -42 ° C up to + 190 ° C
temperature uniformity in chamber: + / - 0.5 up to 2 K
Voltage / Power Rating
400 V, 3 phases N, 50 Hz
ca. 7.000 W

Temperature Test Chamber
Model TTC 256
Standard equipment
Ventilation and 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
autodiagnostic system with fault indication on 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 segment adjustable from 1 min. up to 999 hours
digital display ( LED) of all set parameters, such as temperature, weekdays, time and set-up values - language to be chosen in setup
digital display of set values ( resolution: 0, 1° C below 99, 9° C, 0, 5° C above 100° C) and actual values ( resolution: 0, 1° C) of temperature ( LED)
2 x 10 l tanks as condensate collector, on telescopic slide
long-term logging ( ring store) of all relevant data, GLP-conforming as data logger - 1024 kB
programme stored on power failure
parallel printer interface ( incl. real-time clock with date function) for printing logging files, suitable all PCL3-compatible ink-jet printers ( USB available via converter, see accessories)
USB interface including MEMMERT Software " Celsius " for programming and documentation
chip card control incl. one MEMoryCard XL with 32 kB ( up to 40 ramps)
incl. works calibration certificate for -20 ° C and + 160 ° C
Heating Concept
high-performance ring heaters with optimised air circulation
door heating to avoid condensate
Cooling Concept
twin compressor
speed adjustable condenser fan
chlorine-free refrigerant R404A
Multiple Overtemperature Protection
with audible and visual alarm in case of over-/ undertemperature and open door
independently working, digitally adjustable electronic overtemperature controller TWW, protection class 3.3
additional integral over- and undertemperature protection " ASF " ( Auto-Safety-Function) automatically following the set value at a preset tolerance range
mechanical temperature limiter TB protection class 1 switching the heating off at approx. 10 ° C above max. oven temperature
Textured Stainless Steel 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 castors
Interior
w x h x d: 640 x 670 x 597 mm, 256 l
easy-to-clean interior, made of stainless steel, material no. 1.4301 ( ASTM 304) , hermetically welded
1 stainless steel grid
3-layer-high-tech-insulation
lateral entry port, right, 80 mm diam. with silicone plug
Halogen interior lighting 2 x 25 W, switchable
Temperature Range
from -42 ° C up to + 190 ° C
temperature uniformity in chamber: + / - 0.5 up to 2 K
Voltage / Power Rating
400 V, 3 phases N, 50 Hz
ca. 7.000 W