YS-SDJ Programmable Constant Temperature and Humidity Test Chamber
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YS-SDJ Programmable Constant Temperature and Humidity Test Chamber

Scope of Application

【Operating Instructions】

    The programmable constant temperature and humidity test chamber (also known as a programmable alternating temperature and humidity test chamber) is used for testing the performance of materials under various environmental conditions, as well as for evaluating the heat resistance, cold resistance, dry resistance, and humidity resistance of various materials. It is suitable for quality inspection and research applications in electronics, electrical appliances, mobile phones, communications, instrumentation, vehicles, plastic products, metals, food, chemicals, building materials, medical equipment, aerospace, scientific research institutions, and universities.


**YS-SDJ Programmable Constant Temperature and Humidity Test Chamber**


**【Scope of Application】**  

The programmable constant temperature and humidity test chamber (also known as a programmable alternating temperature and humidity test chamber) is used for

 testing the performance of materials under various environmental conditions, as well as for evaluating the heat resistance, cold resistance, dry resistance, and humidity

 resistance of various materials. It is suitable for quality inspection and research applications in electronics, electrical appliances, mobile phones, communications, 

instrumentation, vehicles, plastic products, metals, food, chemicals, building materials, medical equipment, aerospace, scientific research institutions, and universities.


**【Product Features】**  


- Fully imported stainless steel housing or anti-rust steel plate (powder-coated) for an attractive and durable appearance.  

- Imported refrigeration unit; all key components are from international brands; the entire system is equipped with multiple protection devices to enhance operational reliability.  

- Ingenious air duct design ensures minimal temperature and humidity deviation, high uniformity, and includes an anti-condensation function.  

- The door is equipped with an illuminated observation window for convenient viewing of sample test conditions.  

- The system is simple to operate, easy to install, and convenient to maintain.


【Tech Parameter】

model

Programmable Constant Temperature and Humidity Test Chamber YS-SDJ-Volume-ABCD

Internal Volume (L)(L)

100

150

225

408

800

1000

Internal (WxDxH)(mm)

500x400x500

500x500x600

600x500x750

800x600x850

1000x800x1000

1000x1000x1000

Outer(WxDxH)(mm)

700x1390x1580

700x1490x1680

800x1490x1780

1000x1590x1930

1200x1790x2080

1200x1990x2080

wiondow(WxH)(mm)

214x300

214x300

280x350

360x510

360x510

360x510

Lowest Temper

-20

-40

-70

-20

-40

-70

-20

-40

-70

-20

-40

-70

-20

-40

-70

-20

-40

-70

power(KW)

4.5

5.0

6.5

5.0

5.5

7.0

5.5

6.0

7.5

6.0

7.5

10

9.0

10

11

10.5

11

12

VoltAC(V)

Voltage220

380

Voltage220

380

220

Voltage380

220

Voltage380

Voltage380

Voltage380

weight(kg)

250

300

400

520

630

700

 

 

 

 

 


Temperature & Humidity Control Mode 

Balanced Temperature & Humidity Control (BTHC), PID Intelligent Regulation


Performance: Air‑cooled type; under no‑load conditions, 

the air‑cooled unit operates at a room temperature of 25°C. 


  A:-40℃~+150℃ B:-20℃~+150℃ C:-60℃~+150℃  D:-70℃~+150℃   

Please select; standard is:  A -40℃~+150℃


Temperature Range20%~98%R.H(10%~98%R.H,5%~98%R.H;(customizable for special conditions)

 

Temperature Uniformity ≤±2℃

 

Temperature Fluctuation ±0.5℃

 

Temperature Deviation ≤±2℃


Humidity Deviation   75%R.H <±5%R.H;75%R.H ≥±3%R.H,


Humidity Fluctuation        ≤±2.5%R.H


Humidity Uniformity (or Humidity Distribution Uniformity)  225L≤±3%    408L≥±5%


Heating RateApprox. 2°C/min, no‑load 

(linear/non‑linear rates of 2~25°C/min are customizable for special conditions)  


Cooling rate: Approx. 0.7~1.7°C/min, no‑load (linear/non‑linear rates of 2~25°C

/min are customizable for special conditions)  

 

Temperature and Humidity Resolution 0.01℃/ 0.1%R.H

 


Inner Chamber Material   SUS304 Mirror‑finished Stainless Steel


 Outer Shell Material

 Rust‑treated Cold‑rolled Steel Plate with Powder Coating / SUS304 Brushed Stainless Steel


Insulation

German Bayer Polyethylene Foam (PU Foam Insulation) 

 


Cooling Method: Fully Hermetic Two‑Stage Compressor (Air‑cooled) 

 


Refrigerator / Compressor  French Tecumseh compressor /

 (for large models: German Bitzer compressor / German GEA Bock compressor)


Refrigerant   R404 / R23 (environmentally friendly refrigerant) 


Condensation Method:Air‑cooled 

 

Heater: Nickel‑Chromium Alloy Wire Heater   

 

 Humidifer : Boiler‑type Stainless Steel Sheathed Heater   


 Centrifugal Fan


Airflow Mode: Broadband Forced Air Circulation (Upper Outlet, Lower Inlet)


Controller: TATO (Taiwan) / Korean TECH Sanyuan

 


Water Supply Method   Automatic Water Supply Device (specify if selected)    


Water Supply Tank  Manual Drawer‑Type Water Tank  


Water Quality    Resistivity  >500MΩ


Standard Configuration**  

- Observation window (double‑layer hollow tempered conductive glass): 1 piece  - Test hole Φ50 mm (located on the left side): 1 piece  - Sample shelves: 2 layers  - Chamber illumination lamp (fluorescent lamp): 1 piece  - Water supply tank: 1 piece  - Wet‑bulb wick (weather strip): 1 piece  

- Casters: 4 pieces  - Power cord: 1 piece  



Operating Conditions**   - Ambient temperature   

 +5℃~+28℃(water cool5℃~+35℃)


Relative humidity   ≤85%RH


Precautions: This equipment must not be used to test or store articles containing flammable, explosive, volatile, or corrosive gases. 


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