Indoor Air Quality
Electrochemical IAQ Sensor
Competence Overview
Apart from a compact size, long product life and low cost versus conventional liquid-state electrochemical sensor, our solid-state sensor also has these advantages:
- Industrial grade precision (accuracy, repeatability & linearity), superior performance above all semiconductive and MEMS type sensors
- PPB (parts-per-billion) resolution, against to PPM (parts-per-million) on semiconductive and MEMS type sensors
- Less data drifting over time, no calibration is ever needed over its product life
- Faster response time, quicker zero recovery, no warm-up time due to its low temperature resistance
- Immunes towards electromagnetic interference, resulting a lower-cost hardware construction to work with AC power supply and WIFI signals on the same PC board
- Works well in very dry ambient, as the high polymer file is insensitive to humidity changes
- Works well in vacuum or anoxic ambient
- Compact size
- One-third or one-fourth of price to conventional liquid-state electrochemical type sensors
- Compliance:
- RoHS
- EMC: EN55022 and FCC
- EU 2002/231/CE Directive
- EN 13779:2007
- GB 12358:2006
- GB 50325:2010
- GB 3095:1996
- GB/T 18883:2002
- TW Indoor Air Quality Standards
Standard Factory Test
Proprietary sensor calibration and baseline adjustment method, appliance and software tools
Span Gas Reaction Chart of IAQ-10 Sensor
The IAQ-10 sensor measures the combined effect of gases like: Formaldehyde (HCHO), Methanol (CH3OH), Toluene (C7H8), Sulfur Dioxide (SO2), Carbon Monoxide (CO), Hydrogen Sulfide (H2S), Methyl Mercaptan (CH4S), hundreds of allergic/toxic gases of hydrocarbons (CH) and Sulfur Oxides (SOx).
Indoor Air Pollution Grading in IAQ-10 Sensor
One needs to be acting if the IAQ-10 reports a pollution level over 5 ppm. Better ventilation is always the best bet. But if this option is not available, bring in some electric appliance.
On-site Testing of IAQ-10 in Usual Urban Occasions
In order from top: crowed hospital, fully-seated long-haul coach, rush-hour train compartment, household kitchen in use, well-vented living room, badly-vented living room, crowed meeting room, well-vented office, badly-vented office
On-site Testing of IAQ-10 in Industrial Occasions
In order from top: furniture production line, surface spray-coating workshop, basement carpark, inside air-conditioning car, assembly line of plastic parts, food processing line, electrical product production line, printing and packaging workshop, dining area in restaurant
Linearity Test
Typical test result: within ± 5% deviation on all checkpoints, within ± 3% deviation in measure range 0~5 ppm.
Zero-point Stability Test
Conventional semi-conductive and liquid-state electrochemical type sensors are often subjected to data drift even in non-conteminated environment, yeilding shift of baseline and inaccurate measures.
Our solid-state IAQ sensors are tested in a contant blow of fresh air for 12 hours, showing a baseline shift < 50 ppb, while the conventional senosrs types often go above 300 ppb.
Conformance Test
How a group of sensors measure on a fixed concentration of span gas? This test is to find the answer and to screen out the incompetent.
While any other semiconductive and MEMS types gas sensor fail (deviation greater than 5%), our IAQ sensor all fall within 100 ppb in a full-scale measure of 10,000 ppb, which is less than 1%.
Stability Test
How a group of sensors measure over a discontinuous change of contaminant concentration? This test is to find the answer and to screen out the incompetent.
While any other semiconductive and MEMS types gas sensor fail (deviation greater than 1%), our IAQ sensor all fall within 100 ppb in a full-scale measure of 10,000 ppb, which is less than 1%.
IAQ Sensor Specifications
Two measuring range options are available for the IAQ sensors:
- X_J1 | 0.01~10 ppm | 1 ppb
- X_J3 | 1~200 ppm | 100 ppb