Constant temperature and humidity laboratory, walk-in constant temperature and humidity laboratory

Introduction: -80, -70, -60, -40 ℃~90 ℃ (customized as needed) $r $: ≤± ℃ $r $: ≤ 2 ℃ (stable state) $r $: 3-5 ℃/min Full process average $r $: -1 ℃/min Full process average (or specified) $r $: 30%~98%

1.1Temperature range: -80, -70, -60, -40 ℃~90 ℃ (customized as needed)

1.2Temperature fluctuation: ≤±0.5℃

1.3Temperature uniformity: ≤ 2 ℃ (in stable state)

1.4Heating rate: 3-5 ℃/min, average throughout the entire process

1.5Cooling rate: 0.7-1 ℃/min, average throughout the entire process (or specified)

1.6wetDegree range: 30%~98% R.H

1.7Humidity fluctuation: ≤±2.5%R.H.

1.8Humidity deviation: ≤± 3%

1.9Humidity uniformity: ≤ 2.5% (in steady state)

1.10Test box studio size: customized according to needs

1.12Dimensions of the test chamber: customized as needed

Part 2: Product Structure,Control method

1 Product temperature control features:

2Structure and Material:

2.1Inner box material: brushed stainless steel plate (SUS # 304), beautiful and easy to clean.

2.2Outer box material: shell electrostatic spray treatment

2.3Insulation material: Ultra fine glass fiber insulation cotton

2.4Supply air circulation system:

2.4.1 Low noise long axis circulating motor.

2.4.2Stainless steel extended axis

2.4.3Multi blade fan (SIRCCO FAN)

2.4.4Adjustable louver air guide to ensure even temperature distribution inside the test chamber

2.5Box door: double leaf door, double window, left and right opening, window size is 400X500mm.

2.5.1There is one 60W high brightness lighting lamp inside the box, which can clearly observe the condition of the test samples inside the test box. The switch is placed outside the test roomministry

2.5.2 400x500x40mm 3Layer large vacuum coated electric heating anti frost observation window, no need for wipers.

2.5.3External protruding lever handle.

3Freezing system:

3.1Compressor: German blog semi enclosed compressor (or specified)

3.2Refrigerant: DuPont brand refrigerant R404A imported from the United States, with an R23 ozone layer depletion rate of 0 (ODP=0.00)

3.3Condenser: air-cooled condenser

3.4Evaporator: finned multi-stage automatic load capacity adjustment, multiple solenoid valve conversion, ensuring low energy consumption of the equipment.

3.5Other accessories: desiccant, repair valve, Italian imported Casito solenoid valve

3.6Expansion system: automatic capacity control throttling and pressure reduction refrigeration system

3.7Refrigeration welding anti oxidation protection: During the welding process of the refrigeration pipeline, nitrogen gas is used throughout the welding to prevent the expansion valve from getting dirty and blocked due to internal oxidation of the copper pipe. This process is a unique technique in our company's refrigeration production process.

4Control system:

4.1 Controller specifications7-inch large touch screen, high-precision temperature control.

4.1 Controller specifications:Temi880instrument

（1）、Controller specification: 7-inch color touch screen

（3）Setting accuracy: Temperature: 0 1 ℃ humidity: 1% RH

（4）Display accuracy: Temperature: 0 01 ℃ humidity: 0.1% RH

（5）Running mode: Fixed value running, program running

（6）It has the function of automatic calculation, which can immediately correct the temperature and humidity change conditions, making temperature and humidity control more accurate and stable

（7）The controller operation interface is available in both Chinese and English, and the real-time operation curve chart can be displayed on the screen

（8）After inputting the data and experimental conditions, the controller has a screen lock function to avoid manual touch and shutdown

（9）LCD screen power-saving mode: better protects the LCD screen during long-term operation (making its lifespan longer)

（10）Appointment activation function: Set the appointment time, and the device will automatically start when the time is up.

（11）Auxiliary functions: Fault alarm and cause prompt function, fault name can be changed, temperature upper limit protection function, timing and reservation (automatic stop and automatic start function), multi group (* 6 groups) P I D separate segmented temperature control, curve display and save function display PV curve for 0-8 days. The temperature can be set to operate linearly (i.e. set the rate of rise/fall per hour)

4.2Internal control circuit: The wiring of the control board is clean and tidy, and all wiring is in accordance with the relevant standards of national electrical regulations, with numbered tubes. Convenient for customers to maintain and repair in the future. The main execution components are all imported brands. Communication contactors, intermediate relays, solid-state relays, etc. are all from Schneider brand in France.

4.2 Heating system:

4.2.1Heater: Nickel chromium alloy wire type high-efficiency heater, automatic calculation with high precision

4.2.2Humidification system: The humidification system adopts boiler type external humidification, which is convenient for equipment to meet low humidity requirements. Compared with the traditional internal shallow groove humidification method, it also avoids the disadvantage of high humidity in the test space during high temperature. Humidity PID+SR control (calculation cycle: 1~4S can be set), which ensures that the heat loss is equivalent to the heating amount, thus saving about 30% electricity compared to traditional ON/OFF control

4.2.3Humidification water supply system: Humidification water supply adopts a pump lift type water supply, with a connector principle for water supply, and the humidity curve is not affected when replenishing water. The water supply system is easy to clean and maintain.

4.2.4Temperature measuring body: DIN specification Class APs4mm SUS #304Stainless steel PT 100Ω 2A hygrometer that has been wet for a long time is resistant to high humidity and has a response time of only 2 seconds.

4.3Safety device:

4.3.1Underphase reverse phase protection switch

4.3.2Compressor high voltage protection switch

4.3.3Compressor overheat alarm

4.3.4Compressor overcurrent alarm

4.3.5Non fuse switch

4.3.6Ceramic quick fuse

4.3.7Line fuses and safety terminals

4.3.8Buzzer abnormal alarm device

5Standard configuration:

5.1 Power cord 16.0 mm2x5Rui, low impedance rubber cable, 3m long, 1 cable

5.2 1 copy of equipment electrical schematic diagram

5.3 1 lighting lamp

5.4 There is one left side test hole with a diameter of 50mm and one stainless steel hole cover, as well as one silicone plug.

5.5 One set of fuses (consumable parts)

5.61 set of operation manual

6Surrounding environment:

6.1Allowable temperature range 0~32 ℃

6.2Performance guarantee range: 5-28 ℃

6.3 Relative humidity: not exceeding 85%

6.4Atmospheric pressure: 86-106Kpa

6.5There is no strong vibration around

6.6No direct sunlight or other heat sources

6.7There is no high concentration of dust or corrosive substances around

6.8The test chamber should be placed steadily and kept level

6.9There should be a certain distance around the test box for easy maintenance and operation

6.10The installation site has good ventilation

7Power supply: AC380V 50HZ

The random technical documents include the instrument manual, certificate of conformity, warranty card, and circuit schematic

Part Four: Personnel Training

The supplier is responsible for installation and debugging, training of users, and can provide training3-5 people, until each person can operate and perform simple maintenance independently.

Part 5: After sales Service and Responsibilities

Warranty period: The whole machine is guaranteed for 1 year (except for damage caused by natural disasters, abnormal power, improper use, and improper maintenance, our company provides free repairs). If there are any quality problems, our customer service personnel will be on site within 24 hours and provide lifelong free technical consultation and regular maintenance advice.）