Volume, dimensions, and weight

Volume

Inner chamber dimensions

Outer chamber dimensions

Weight

Performance

Test environment conditions

Test methods

GB/T 5170.2-2008 Temperature test equipment

GB/T 5170.5-2008 Damp heat test equipment

Temperature range

Temperature fluctuation

Temperature uniformity

Temperature deviation

Heating rate

Cooling rate

Load

Humidity range

(10~98) %RH (refer to the temperature and humidity controllable range chart, no active heat load)

Relative humidity deviation

±3.0%RH (when humidity＞75%RH)

±5.0%RH (when humidity ≤75%RH)

Meet test standards

GB/T5170.2-2008 Temperature test equipment

GB/T5170.5-2008 Damp heat test equipment

GB/T2423.1-2008(IEC60068-2-1:2007) Low temperature test method Ab

GB/T2423.2-2008(IEC60068-2-2:2007) High temperature test method Bb

GB/T2423.3-2006(IEC60068-2-78:2007) Constant damp heat test method Cab

Structural characteristics

Insulation envelope structure

Outer wall material: high-grade cold-rolled steel plate, surface spray treatment (FQY standard color)

Inner wall material: stainless steel plate SUS304

Box insulation material: rigid polyurethane foam + fiberglass

Door insulation material: fiberglass

Air conditioning channel

Centrifugal fans: 4, AC380V 550W

Heater, evaporator (also dehumidifier), water supply and drainage outlet, dry bulb temperature sensor, humidifier, dry burn preventer, electronic humidity temperature sensor, wet bulb water tank

Standard configuration of test chamber

Observation window: 1 piece of transparent electric heating film hollow tempered glass (located on the door), visual range is about 500mm×600mm

Lighting: 11W/AC220V 1 piece

Mobile casters: 4 pieces

Sample rack: 2 layers of stainless steel sample rack, load-bearing (evenly distributed): 50kg/layer

Lead hole

Door

Control panel

Mechanical room

Power distribution control cabinet

Heater

Nickel chromium alloy electric wire heater

Heater control mode: contactless equal period pulse width modulation, SSR (Solid State Relay)

Heater power: 6kW×3

Humidifier

Shallow water tray humidification method humidification method

Stainless steel armored heater

Heater control mode: contactless equal period pulse width modulation, SSR (Solid State Relay)

Water level control device, heater anti-dry device

Humidifier power: 6KW×3

Water source

Power cord hole and drainage hole

Refrigeration system

Working method

Cooling method

Refrigeration compressor

Evaporator

Condenser

Throttle device

Evaporative condenser

Refrigerator control method

The PLC (Programmable Logic Controller) of the control system automatically adjusts the operating conditions of the refrigerator according to the test conditions.

Evaporator pressure regulating valve (to prevent evaporator freezing).

Compressor return air cooling circuit.

Environmentally friendly refrigerant

Electrical control system

Controller model

Editable: 20 programs. Each program has a maximum of 50 steps and can be set to 20 cycles (each cycle step has a maximum of 9999 cycles)

Fixed: 10 procedures

The program can be linked to achieve unlimited operation.

Temperature: Adjust according to the temperature working range of the equipment (upper limit +5℃, lower limit -5℃)

Humidity: (0~100)%RH (temperature and humidity test equipment)

RS-485 interface, with local and remote communication functions (needs to be equipped with centralized monitoring software, RS-485/RS-232 converter, and needs to occupy one COM port and one USB port of the PC). Up to 16 devices can be connected at the same time, with a maximum cumulative cable length of 800m.

PC software usage environment: IBM PC compatible machine, PⅡ or above CPU, 128M or above memory, English Windows2000 or English WindowsXP operating system.

Anti-integral windup PID

BTC balance temperature control method (temperature test equipment)

BTHC balanced temperature and humidity control method (temperature and humidity test equipment)

It has SRAM with battery protection, which can save the device's setting value, sampling value and sampling time. You can touch the screen with your finger to slide and observe the data in real time.

The default maximum storage time is 60 days (when the sampling period is 1.5min). The sampling period can be set by the user. The sampling time calculation formula is as follows:

If the sampling period is set to t min, the storage time: d=((65536xt)/60)/24 (days)

1. Screen interface curve output---directly save the curve interface on the touch screen or any interface required by the customer as a *.bmp picture to a U disk or directly use a printer to print the curve interface on the touch screen or customer requirements (interface software needs to be changed) any interface.

2. USB function---equipped with 1 8G U disk. During the test, insert the U disk into the USB interface of the controller, and the test data will be automatically recorded into the U disk and saved as a *.csv data file (not a graph). The sampling period can be set on the screen. It can be opened and processed using EXCEL and other software.

3. Connect to the printer (optional): --- Configure the printer to print the test date, set temperature, measured temperature, set humidity, and measured humidity by setting the number of prints according to time.

4. Connected to PC (optional): ----Through the centralized monitoring software, test data can be recorded, automatically displayed as a curve in the PC, and can be printed directly, with no limit to the recording time. File size depends on hard drive capacity. The PC can also be used as an operating terminal to achieve remote monitoring.

Input characteristics:

24 photoelectrically isolated 24V switching inputs. The I/O board periodically scans 24 switches to understand the real-time operating status of the equipment and the status of the equipment protection device. 5 analog photoelectrically isolated input channels. The analog channel can be connected to K and T-type thermocouples, Pt100 platinum resistance, 0~10V DC voltage source, 0~20mA, 4~20mA current source input.

Output characteristics:

20 relay outputs with photoelectric isolation. (Soil: 24VDC, Contact: 5A, 250VAC, 5A, 30VDC). 4 transistor outputs with photoelectric isolation. It can directly drive the solid state relay with 24VDC as the control end. The temperature and humidity recorder can be used by connecting a third-party manufacturer's D/A module (standard DC 4~20mA output) to the RS-485 bus that communicates with the LCD controller.

Programmable logic control:

The I/O board has built-in programmable logic control and has the functions of a PLC. This makes the I/O board more powerful than an ordinary pure input/output board, making it easy and convenient to change the logic control method and expand the I/O board. The program can be flexibly changed according to the user's special requirements through the PC, downloaded and solidified on the I/O board.

Communication function:

The I/O board has an isolated RS-485 communication interface. Through this communication interface, the I/O board sends analog and switching input and output values to the LCD control panel for calculation and display. And accept control commands from the LCD control panel.

Temperature and humidity measurement

Temperature: Armored T-type thermocouple or PT100

Humidity: Classic wet and dry bulb thermometer method (damp heat type)