ATENG 12695 — Air Humidity Measurement Unit
Anodized aluminum structure and panel made of painted steel.
The unit includes wheels to facilitate its mobility.
Main metallic elements made of stainless steel.
Diagram in the front panel with distribution of the elements similar to the real one.
- Duct:
- Material: stainless steel.
- Length: 1900 mm approx.
- It includes two transparent windows: one is located in the left side to visualize the humidification and dehumidification processes and
the other is located in the front side to allow the access for students to take readings and to change the instruments.
- The duct includes different elements to adjust the air humidity:
- Humidifier:
- Type: ultrasonic atomizer.
- Minimum water level: 45 mm.
Low water cut-off.
- Dehumidifier:
Peltier cooling element.
- Cooling capacity: 74.5 W.
- It includes a heat sink. Thermal resistance: 0.75 K/W.
- Fan to show the effects of airflow on different instruments and to ensure a good mixing. Maximum air flow rate: 380 m³/h, max. speed:
- 2760 rpm.
Orifice plate located at the fan outlet.
- Inclined manometer to measure the pressure drop in the orifice plate. Range: 0 - 3" WC.
Three regulations valves to work with the unit in two configurations (the air can be recycled inside of the duct or taken from the room
- air) and to change the airflow rate:
One is situated in the right side of the duct.
Another is situated between the right side of the duct and the room air inlet.
Finally, the last valve is situated in the room air inlet.
- Measuring methods for air humidity measurement:
- Wet and dry bulb hygrometer, range: - 5…50°C, precision: ±0.5%.
- Hair hygrometer, range: 0 - 100% R.H.
- Capacitive humidity sensor, range: 0 - 100% R.H.
- Humidity sensor with synthetic fiber and combined temperature sensor. Humidity range: 30 - 100% R.H. Temperature range: 5 - 80°C.
- Electronic console:
Metallic box.
Humidity sensor with synthetic fiber and temperature sensor connector.
Capacitive humidity sensor connector.
ON/OFF controller for the humidifier.
ON/OFF controller for the dehumidifier.
ON/OFF controller for the fan.
Fan speed controller.
Two digital displays for the temperature and the humidity for the humidity sensor with synthetic fiber and temperature sensor.
Digital display for the capacitive humidity sensor.
Digital display for the speed of the fan.
Cables and accessories, for normal operation.
