High and low temperature constant humidity test box
(1) performance specifications
1. Model: sky7002-20 series
2, the temperature control range: - 20 ℃ ~ + 150 ℃
3. Humidity control range: 30% RH ~ 98% RH
4, temperature uniformity: 2 ℃ or less
5, temperature fluctuation degree: plus or minus 1.0 ℃ or less; Temperature deviation: plus or minus 2.0 ℃ or less
6, humidity volatility: plus or minus 1.0 ℃;
7. Humidity fluctuation degree: + 2.5% RH; Humidity deviation: less than or equal to + 2, -3% RH
8, temperature drop time: from + 80 ~ 20 ℃ within 120 minutes (no sample, no load)
(note: the performance of the above data is measured and calculated by the method of GB5170.2 and GB5170.5)
(ii) the structure of the chamber
1. Size of model and inner chamber: (or customized according to customer requirements)
2. Inner bile material: SUS304 stainless steel plate, shell material: SUS304 stainless steel plate;
3. Insulation materials: ultra-fine insulation cotton;
4. Heating: finned heating tube;
5. Humidification: shallow channel humidification mode;
6. Circulating system: single cycle, centrifugal wind blade shunt type wind tunnel structure;
7. Refrigeration system: imported whole closed refrigeration compressor, single stage refrigeration mode, full set of imported refrigeration accessories;
Evaporator: multi - segment radiator
8. Cooling method: air cooling
9. Temperature sensor: T type thermocouple
Humidity sensor: wet ball gauze type
10, protection system: leakage protector, temperature overheat preventive device, humidifier empty to prevent burning device, the fuse, motor, blower, refrigerator), freezer high pressure switches, motor overload relay (refrigerator) wiring circuit breaker, etc.
11. Observation window: enhanced glass with built-in heating body;
12, cable hole: Φ inside diameter of 50 mm < installation to the position of the user to specify >;
13. Indoor lighting: incandescent lamp AC220V, 40W (must be extinguished at high temperature);
Iii. Control mode
1. Operation selection: program operation and fixed value operation;
2. Display part: imported TFT liquid crystal display (8.5 inch);
3. Set part: import touch screen control setting;
4. Program capacity: RAM mode - 20 modes (maximum 99 steps per mode);
5. Control mode: PID self-tuning control;
6, auxiliary function: on detection function, input interrupt. The lower temperature and humidity alarm functions, the functions of self-diagnosis, alarm display, power failure protection function, timing function (automatic starting, automatic stop), refrigerating machine automatic control function, and help function, key protection function etc.
