Programmable Constant Temperature & Humidity Test Chamber | -40℃ to +150℃ Environmental Chamber

Test Environmental Conditions

Test Methods

GB/T 5170.2-1996 Temperature test equipment

GB/T2423.2-2008 (IEC60068-2-2:2007) Environmental testing – Test Bb: Dry heat

GJB150.3-1986 High temperature test

GB/T2423.1-2008 (IEC60068-2-1:2007) Environmental testing – Test Ab: Cold

GJB150.4-1986 Low temperature test

GJB150.9-1986 Thermal test

GB/T2423.3-2006 (IEC60068-2-78:2007) Environmental testing – Test Cab: Damp heat, steady state

GB/T2423.4-2008 (IEC60068-2-30:2005) Environmental testing – Test Db: Damp heat, cyclic

Humidity Range

Compliant Test Standards

GB 11158 High-temperature test chamber technical specifications

GB 10589-89 Low-temperature test chamber technical specifications

GB 10592-89 High and low temperature test chamber technical specifications

GB/T 10586-89 Humidity-heat test chamber technical specifications

GB/T 2423.1-2008 Environmental testing – Test Ab: Cold

GB/T 2423.2-2008 Environmental testing – Test Bb: Dry heat

GB/T 2423.3-2006 Environmental testing – Test Cab: Damp heat, steady state

GB/T 2423.22-2002 Environmental testing – Test N: Change of temperature

IEC 60068-2-1:1990 Environmental testing – Part 2-1: Tests – Test A: Cold

IEC 60068-2-2:1974 Environmental testing – Part 2-2: Tests – Test B: Dry heat

Refrigeration Unit

1.US Copeland low-temperature, low-noise scroll compressor (air-cooled heat dissipation)

2.Cooling method: Air-cooled

Heat Exchanger

Heat Load Regulation

1.Adopts automatic refrigerant flow control device to effectively remove the heat load from the test sample, keeping pace with German/Japanese technology

2.Compared with traditional designs, it provides higher control stability and repeatability, while achieving superior energy efficiency and power savings.

High-Efficiency Components

1.Condenser and evaporator use AC&R multi-pass turbulence-type aluminum fin devices.

2.Throttling devices all use imported well-known refrigeration accessories.

Refrigeration Control Method

1.The controller automatically adjusts the operating conditions of the refrigeration compressor according to test conditions, controlling the cooling capacity output to achieve power and water savings. Operating conditions are more stable, with a 30% power saving in humidity operation.

2.Evaporating pressure regulating valve

3.Compressor suction gas cooling circuit

a) Controller Model

b) Controller Specifications

1.7-inch true-color touchscreen display

2.Two control modes: Program / Fixed value

3.Sensor type: 2-channel PT100 input (electronic sensor input optional)

4.Output modes: Voltage pulse (SSR) / Control outputs: 2 channels (Temperature / Humidity) / 2 channels 4–20mA analog output / 16 relay outputs (passive)

5.Control signals: 8 IS control signals / 8 T control signals / 4 AL control signals

6.Alarm signals: 16 DI external fault alarms

7.Temperature measurement range: -90.00℃ ~ 200.00℃ (optional -90.00℃ ~ 300.00℃), accuracy ±0.2℃

8.Humidity measurement range: 1.0% ~ 100% RH, accuracy ±1% RH

9.Communication interface: (RS232/RS485, max communication distance 1.2km; up to 30km with optical fiber)

10.Interface languages: Chinese / English

11.With Chinese character input function

12.Printer support (USB function optional)

13.Multi-signal combined relay output, signals support logical operations (NOT, AND, OR, NOR, XOR), equivalent to PLC programming capability

14.Multiple relay control modes: Parameter→Relay mode, Relay→Parameter mode, logical combination mode, composite signal mode

15.Program editing: Up to 120 program groups, with a maximum of 100 segments per program

Controller Technical Parameters

• Accuracy: Temperature ±0.1℃ + 1 digit, Humidity ±1% RH + 1 digit

• Resolution: Temperature ±0.01℃, Humidity ±0.1% RH

• Temperature slope: 0.1 ~ 9.9 adjustable

• Upper/lower limit standby and alarm functions

• Input signals: Dry-bulb and wet-bulb PT100 × 2

• 9 sets of PID control parameters, with auto-tuning function

• Automatic dry/wet bulb calibration screen

Control Methods

1.Anti-integral windup PID control

2.BTC balance temperature control + DCC intelligent cooling capacity control + DEC intelligent electrical control (for temperature test equipment)

3.BTHC balance temperature and humidity control + DCC intelligent cooling capacity control + DEC intelligent electrical control (for temperature and humidity test equipment)

Display Functions

• Touchscreen dialog interface: No need for key input; directly touch options on the screen.

• Direct display of set value (SV) and process value (PV) for temperature.

• Displays currently executing program number, segment, remaining time, and cycle count.

• Operating cumulative time function.

• Graphical curve display of temperature program set values, with real-time program curve execution display.

• Dedicated program editing screen; minimum 5 segments of temperature/humidity and time can be entered per page.

• Free switching between Chinese and English languages.

• Fault prompt display screen.

• Adjustable screen backlight.

• Timed screen saver function (can be set by timer or manual shutdown).

Program Capacity & Control Functions

• Usable program groups: Max. 120 patterns.

• Usable memory capacity: Total 12,000 segments.

• Repeatable command execution: Each command up to 3,200 times.

• Dialog-style program editing with edit, clear, and insert functions.

• Segment time setting: 0 ~ 99 hours 59 minutes.

• 2 sets of programmable sequence control modules.

• Power-off program memory: Automatically resumes execution after power restoration.

• Equipped with RS-485 or RS-232 communication interface.

• Real-time graphical curve display during program execution.

• Automatic refrigeration capacity adjustment function.

• Scheduled start and shutdown functions.

• Date and time adjustment function.

• Key and screen lock (LOCK) function.