Temperature Humidity Cabinet/Thermostatic/Humidistatic Air Conditioning Unit

The Temperature Humidity Cabinet, also described as a thermostatic and humidistatic air conditioning unit (LEGLTH series), controls the temperature and relative humidity of a room or enclosed space. Listed applications are computer rooms, laboratories and experimental rooms, bars and hotels. Seven models, LEGLTH-030W to LEGLTH-0300W, cover applicable areas from 20 to 300 m².

How it works

The unit combines four subsystems: heating, cooling, humidification and dehumidification. A multi-wing centrifugal fan moves room air through the unit in a vertical diffusion, horizontal heat exchange arrangement. Heating is by a SUS304 stainless steel heater. Cooling uses a sealed compressor with a fin type evaporator and an air-cooled or water-cooled condenser. Humidification is by surface evaporation; dehumidification is by dew point control at the evaporator. A microcomputer controller with PID control holds the set points from PT100 sensors in program or fixed mode, through a programmable touch screen. A water-free humidity sensor removes the need to change wet gauze.

The standard control range is 20 to 26 °C and 45 to 60% RH. Stated fluctuation is ±2 °C and ±3% RH, temperature accuracy ±2.0 to ±5 °C and humidity accuracy ±5% RH. Resolution is 0.01 °C or 0.1 °C for temperature and 0.1% RH for humidity, depending on the controller fitted. The inner chamber is SUS304 stainless steel; the exterior is powder-coated stainless steel plate with PU and fiberglass wool insulation. The refrigeration system uses R404A and R23. Protection covers over-temperature, electrical leakage, water shortage, the humidifying system, compressor over-voltage, overload and over-current, and phase sequence. Power supply is 220/380 V, 50 Hz.

What is included

• Conditioning unit with heating, cooling, humidifying and dehumidifying sections
• Programmable touch screen controller with PT100 sensors
• Safety protection package
• Optional: temperature and humidity recorder

Specify for your project

• Room area to be conditioned, 20 to 300 m², to select the model
• Temperature and humidity set points and tolerance required
• Condenser cooling: air or water
• Refrigerant, if other than R404A and R23
• Supply voltage, 220 or 380 V, 50 Hz
• Recorder option

This description defines the product family. Guaranteed performance, included hardware, exclusions, interfaces and acceptance criteria are stated only in the project-specific technical proposal and approved datasheet.

Features:

1. Multi-wing centrifugal air supply way, vertical diffusion horzontal heat exchange system.
2. It is composed of heating sytem, cooling system, humidification system, dehumidification system.
3. Micro-computer controlled.
4. SUS#304 stainless steel plate inner chamber, stainless steel plate with Powder coated exterial chamber.
5. France imported Tecumseh compressor, environmental-friendly refrigerant (R404A, R23)
6. PU & fiberglass wool insulation is to make the temperature stable.
7. Water-free humidify sensor, do not need to change the gauze

Technical parameters: