Constant Temperature Humidity Environment Test Chamber For Electronic Products

1. Item

2. Model

Constant Temperature and humidity test chamber

408L

3. Function

It simulates the products in the chamber where the climate condition of different temperature and humidity, such as high-low operation and storage, temperature cycling, high-low temperature and high-low humidity, moisture condensation etc. to check its adaptability and changing performance.

It’s required to conform to international regulation (IEC, JIS, GB, MIL…) to reach the consistency (including test schedule, condition, method) under the international standard.

4. Sample application

The chamber applies to:

compatibility test for store, transportation and application of electric, electronic products, unit components, parts and other materials under high or low temperature.

The following samples are prohibited to be tested and stored:

- Inflammable , explosive and other volatile substances;

- Corrosive substance;

- Biont;

- Strong electromagnetic emission source.

5. Volume, size & weight

5.1. Volume

5.2. Internal size

5.3. Exterior size

5.4. Weight

408L

W600*H850*L800mm

W1080 x H1300 x D1750mm

400KG

6. Performance

6.1. Test condition

Temperature:+25℃, Humidity: ≤85%, no samples in the chamber

6.2. Test method

GB/T 5170.2-1996 Temperature test chamber

GB/T5170.5-1996 Temperature and humidity test chamber (only temperature and humidity)

6.3. Temperature range

-40℃→+150℃ (adjustable)

6.4. Temperature fluctuation

±0.5℃

6.5. Temperature accuracy distribution

±2.0℃

6.6. Humidity range

20%～98%R.H (temperature at 20℃-85℃)

6.7. Humid. fluctuation

±2.5%R.H.

6.8. Humidity accuracy distribution

±3.0%.

6.9. Heat-up time

-40℃ → +150℃  Heat up for 2-4.0℃/min

6.10. Cooling time

+150℃→ -40℃   Cooling for 0.7-1.0℃/min

6.11. Load condition

Testing space is not more than 3/4 of the total space, no heating

6.12. Sample holder

Stainless steel punching stencil

6.13. Relative humidity and temperature control range (refer to fig.)

6.14. Meet the technical standards

GB/T 2423.1-2001 Test A: Low temperature test method

GB/T 2423.2-2001 Test B: High temperature test method

GJB 150.3-1986  High temperature test

GJB 150.4-1986  Low temperature test

IEC68-2-1 Test A: Cold

IEC68-2-2 Test B: Dry heat

GB11158 “Technical Conditions for High Temperature Test Chamber ”

GB10586-1 “Technical conditions for Damp heat test chamber ”

GB/T 2423.2 “Basic environmental testing procedures 

for electric and electronic products B: High temperature test method”.

GB/T 2423.3 “Basic environmental testing procedures 

for electric and electronic products Ca: Constant damp heat testing method” etc.

7. Structure characteristics.

7.1. Insulated enclosure structure

External material: SUS304 or stoving varnish

Inwall material: SUS304

Insulation material of box body: flame retardant fire rigid polyurethane foam

Door thermal insulation material: flame retardant fire rigid polyurethane foam

7.2. Air conditioning channel

Centrifugal fan:

Heater, evaporimeter, outfall, temperature sensor

7.3. Test chamber standard

Window 330x450x40mm 3 vacuum layers

Anti-explosion handle

Door hinge: SUS #304

Lamps in the chamber: 11W

Access port: φ50mm or φ100mm 1pc or more.

7.4. Door

Single door, open from left, handle is at right; With viewing window: W300xH450mm, lamp window/condensation prevention thermal device

7.5. Controller

Control screen, overtemperature protection setting

7.6. machine room

Refrigeration units , water pans , outfall

7.7. control cabinet for power distribution

Switchboard fan, ventilator

7.8. Heater

Heating system: cycling heating from finned-tube Stainless steel electric heater

7.9. Humidifier

Oven humidification system, cycling winding system

7.10. Power line hole and outfall position

located at the back of chamber

8. Cooling system (Binary cascade refrigeration)

8.1. Cooling compressor

Tecumseh (France) 

8.3. Evaporator

fins-tube evaporator

8.4. Condensator

Air-coolled tube-type condensator  

8.5 Expansion system

Refrigeration system of volume control (capillary)

8.6 Evaporative condenser

Stainless steel brazing plate-type heat exchanger

8.7 Chiller control

Operation of cooling machine can be adjusted automatically by control system according to the test condition

evaporating pressure adjustable valve

Cooling loop of compressor

8.8 Freezing medium

 R404a (Eco-friendly, Ozone loss rate at 0)

9  Controller

 Independent R&D software (Taiwan)

9.1 Temperature and Humidity controller

Imported 7.0 inch LCD touch screen control, programmable of temperature and humidity; 100 groups of program and 1000 groups of memory, each for 99hrs 59min and can be set as required with groups of PID control function.

9.2 Controller specifications

Precision: Temp. ±0.1℃＋1digi, humid.: ±1%R.H＋1digit

Distinguishability: Temp.: ±0.01℃, humid.:±0.1%R.H.

slope temperature; 0.1～9.9 adjustable.

With warning function and up& down limitation standby

9 groups of PID control parameters and PID auto-calculation.

Dry and damp ball with auto correction.

9.3 Function of page display, program volume and control function

- Touch screen operation, no need to input by key pressing;

- Temp. and Humid. Set (SV) with true (PV) value shown.

- Display of current program No., phase, time left and cycling times.

- Run the operation of accumulative time.

- Program set value of Temp.& humid. shown as curve;

- At least 5 phase of temp. & humid, time can be input on the sole program editing page.

- Language can be switched between English and Chinese;

- Fault page shown;

- Back light adjustable of screen;

- Protection function can be set by time, TIMER can be turn off by manual;

- Program groups available: 100 max. PATTEN.

- Memory volume available: 1000 SEGMENTS.

- Repeat executive command: up to 90 times for each command.

- Program with editing, cancel and insert available;

- Time set of SEGMENTS: 0～90Hour59Min;

- Module device controlled by program;

- Electricity cut memory, with auto start-up and executive program function after switch on;

- program execution with display of curve diagram;

- With auto adjustable freeze function;

- Reservation of start-up and turn-off available;

- Data and time adjustable;

- Key-pressing and page lock (LOCK) available.

10 Safety protection device

a)  Cooling system

- compressor overheated

- compressor overflowed

- compressor overpressed

- condensate fan overheated

- oil pressure protection of compressor

b) Test chamber

Adjustable overheat

Air conditioning channel overtemperature limit

Wind motor overheated

c) Other

- phase sequence and open phase protection of main power supply

- leakage protection

- heating, humidification and Dry burning-resistant protection

- overload and short circuit protection

- overtemperature outage protection

11 Other equipped parts

a) power control contactor of sample testing

Contactor of relay control: within AC220V, 2A (contactor closed under normal running, when chamber stops or of malfunction, contactor open).

b) leakage breaker of main power supply

AC220V, 50Hz＋Grounding wire.

12 Accessories

a) Power

(Standard)

Five core single-phase three-wire and 1piece of protection grounding wire (optional)

b) Access port

φ50mm, φ80mm, φ100mm, φ120mm available according to your requirement and cab be customized on the premise that not affect the machine performance.

c) USB interface (Standard)

All the history curve and history data can be downloaded from controller as Excel or JPG according to date.

d) Remote Control System  (optional)

13  Transportation

The chamber as a unitary to be transported

a) Delivery size

b) Weight

Max. size (package not included): refer to “exterior size”

Max. delivery weight (package not included): refer to “Weight”

14 Usage requirements

Assured by users as below requirements

14.1 Installation position

- With leveling ground and good ventilation;

- No strong shock near the chamber;

- No strong electromagnetic field near the chamber

- No inflammable , explosive , corrosive material and dust

- Surrounding size for chamber operation and maintenance:

A: not less than 10cm

B: not less than 60cm

C: not less than 60cm

D: 225 type: not less than 80cm

408 type: not less than 90cm

1000 type: not less than 120cm

14.2 Condition

Temperature: 5℃～30℃

Humidity: ≤85%

Air pressure: 86kPa～106kPa

14.3 Tap water: only for damp heating equipment with pure water machine

Water flow ≥200kg/h, pressure: 0.1Mpa ~ 0.25Mpa.

Tap water conforms to GB 5749-1985 drinking water standard; Remark: equipped with DN15 male adapter of pure water machine

14.4 Power supply condition

Total power

Max. current

Voltage

- AC220V + Protection grounding

- Voltage fluctuation range: AC(220±10%) V

- Frequency fluctuation range: (50±0.5)Hz

- Resistance of protection grounding wire less than 4Ω.

- It’s required to equipped with air or motive switch of corresponding capacities, which is also used only for the chamber

8.5KW

13A

380V

No

Name

Model

Brand

1

controller

E600

Independent research and development

2

AC contactor

schneider

France

3

Thermal relay

schneider

France

4

Solid state relay

MEGIR

China

5

Intermediate relay

schneider

France

6

Min Yang

Min Yang

Taiwan

7

Time relay

Jia Yang

Taiwan

8

Expansion valve

danfoss

Danish

9

No fuse switch

shilin

Taiwan

10

Push button switch

rita

Taiwan

11

Liquid expansion gas switch

RAINBOW

Korea

12

motor

yizheng

Taiwan

13

Wind turbines

Jianyu

Taiwan

14

Heat preservation material

foam＋Glass wool

China

15

compressor

taikang

France

16

Expansion valve core

danfoss

Danish

17

condenser

Keweili

China Foshan

18

evaporator

Keweili

China Foshan

19

oil separator

Emerson

France

20

heater

Taide

Taiwan

21

condensate fan

Ma er Motor

China haining

22

refrigerating fluid 

R404A honeywell

USA

23

refrigerant oil

bingxiong

UK

24

water suction pump

sanjiaozhou

China Foshan

25

Evaporation pressure regulating valve

danfoss

Danish

26

Water level switch

aleph

Japan

27

Solenoid valve

danfoss

Danish