Constant Temperature Humidity Test Chamber / Climate test chamber (26L Desktop type) ZH-HS-26D

4. Function

It simulates the products in the chamber where the climate condition of different temperature and humidity, such as high-low temperature 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 conforms to IEC, JIS, GB, MIL to reach the consistency (including test schedule, condition, method) under the international standard.

5. Sample application & prohibited

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 / humidity;

The following samples are prohibited to be tested or stored:

- Inflammable , explosive and other volatile substances;

- Corrosive substance;

- Biont;

- Strong electromagnetic emission source.

6. Capacity & Performance

6.1. Inner size

W360 x D200 x H360 mm; volume: 26 Liters

6.2. External size

W860 x D610 x H815 mm (including casters)

6.3. Test space

The test space can not be more than three-quarters of the total space

6.4. Temperature range

-40℃→+150℃ (adjustable)

6.5. Temperature changing rate

Heating rate: 2.0℃-4.0℃/min; Cooling rate: 1.2℃/min 

(average non-linear, no load)

6.6. Temperature fluctuation

±0.5℃

6.7. Temperature uniformity

±2.0℃

6.8. Temperature deviation

±2.0℃

6.9. Humidity & temperature control range (refer to fig.)

20%～98%R.H (temperature controlled at 20℃-85℃)

6.10. Humidity fluctuation

±2.5%R.H.

6.11. Humidity deviation

±3.0% 

6.12. Humidity uniformity

±3.0% (≥75%); ±5.0% (＜75%)

※ The above temperature and humidity performance is measured under the condition of ambient temperature 25℃±3℃, relative humidity ≤85%, ,no-load and no sample inside chamber.

7. Structural features

7.1. Chamber material

In-wall material: SUS304

External material: SUS304 or stoving varnish

Insulation material: PU polyurethane foam, thickness 100mm

7.2. Duct circulation

Centrifugal circulation motor, upper air outlet and lower return air

7.3. Test chamber

Four layers of vacuum anti-condensation glass, the viewing window size: 250*300 (mm) appr.

Lighting tube inside chamber

Access port / test hole: one test hole of φ50mm by default on the left side

7.4. Sample holder

304#SUS Stainless steel punching stencil; Qty: 2pcs; height of shelves is adjustable

7.5. Power line & drain

There is a condensate drain on the back of the device and a national standard 2.5m long cable.

7.6. Door

Open the single door from left to right handle; with viewing window, window lamp with condensation prevention thermal device

7.7. Control panel

7-inch touch screen controller, power switch, running indicator, USB data download interface

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

7.8. Electronic control system

 picture for reference.

●Strictly implement relevant standard and normative operations;

●All lines are clearly marked and easy to maintain;

●All lines are equipped with wire terminals for point-to-point connection, with high reliability and long service life.

8. 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.