Indoor environmental quality (IEQ) refers to the quality of a building’s environment in relation to the health and wellbeing of those who occupy space within it. IEQ is determined by many factors, including lighting, air quality, and damp conditions.
Other factors such as indoor temperatures, relative humidity, and ventilation levels can also affect how individuals respond to the indoor environment.
Typical uses include:
Measures - Temperature, RH, and Light
The HOBO U12-013 data logger has a built in temperature and relative humidity sensor along with 2 external channels for a wide range of energy and environmental sensors. This tool can store up to 43,000 measurements of 12-bit resolution readings.
Measures - Carbon Dioxide and Temperature
Identify areas with low or substandard ventilation. Identify hidden energy savings in over-ventilated spaces. Determine if ventilation is a factor in air quality complaints. Locate the presence of combustion fumes from vehicles and appliances. Use as a reference to calibrate wall mounted CO2 sensors. Telaire 7001 with Onset cable to hook to hobo and 120 V. adapter 6V, 500mA output. See attachments for additional information.
Measures - Temperature in Air, Water, or Soil
A temperature sensor for use with HOBO U-Series external-channel data loggers, this model measures temperature in air, water, or soil. Accuracy and resolution vary according with attached logger model. Measurement range is -40° to 50°C (-40° to 122°F) in water or soil, -40° to 100°C (-40° to 212°F) in air; response time is minutes typical to 90% in air moving 1 m/sec (2.2 mph); response time in stirred water is 1 minute typical to 90%.
Measures - Relative Humidity
The uniquely compact Bacharach Sling Psychrometer accurately determines percent relative humidity without the necessity of consulting complex tables. There is no need to wet the wick each time a reading is taken; the Sling Psychrometer contains a slide rule calculator which correlates wet and dry bulb thermometer indications for direct reading of relative humidity. When not in use, the thermometer case telescopes into the handle for protection.
Measures - Surface Temperature
The 62 MAX has a distance-to-spot ratio of 10:1 and measures temperatures from 30°C to 500°C with an accuracy ± 1.5% of the reading. The 62 MAX+ has a distance-to-spot ratio of 12:1 and measures 30°C to 650°C with an accuracy ± 1.0% of the reading.
Measures - Volatile Organic Compounds
Humans exhale Volatile Organic Compounds (VOCs) as well as CO2. The BAPI sensor is able to measure these VOCs, therefore it is as good an indicator of space occupancy as a CO2 sensor. The BAPI Sensor is different from other VOC sensors because it has been optimized for Demand Controlled Ventilation (DCV). Using a calibration algorithm, the sensor value is converted to an output with a high correlation to a CO2 level. This lets you use ASHRAE’s occupancy-based VRP schedule to ventilate. (More information on this correlated output is available on our website at www.bapihvac.com) The sensor also picks up VOCs from other sources such as building materials, perfumes, colognes and furniture off-gassing. Using this sensor to ventilate is a way of achieving true indoor air quality and not just CO2 dilution.
For More information about set-up and use