Tracer Gas Monitoring System for Ventilation
DKG-VEN
Introduction
The time spent indoor is increasing with the modernization and urbanization process, making the indoor air quality （IAQ）more important than ever.
IAQ relies on many factors, such as temperature, humidity, the concentration of CO2 and VOC’s. One of the effective measures to adjust and improve IAQ is ventilation system.
One of the methods to evaluate ventilation, including natural ventilation and mechanical ventilation, is to monitor the concentration change of tracer gas to calculate the ventilation efficiency. The mostly used tracer gas is selected from SF6, freon 134a, N2O, ethane or CO2.
Features
l Photoacoustic Spectroscopy with patented cantilever pressure sensor
l Low detection limit，high accuracy
l Fast response time
l To measure tracer gas such SF6, Freon 134a, N2O,ethane, CO2 and VOC’s
l Multipoint sampler, extended 12 to 64 sampling point
l No pre-treatment, No consumables, No carrier gas
Applications
l Ventilation evaluation in buildings like air exchange, air of age
l Ventilation efficiency for HVAC
l Ventilation for fume hood
l
Air flow in duct
l Pollution spread research
l Particle, virus, toxic gas stimulation
l Ventilation test for SEMI S6
l Ventilation and leak test in nuclear powerplant
l Data for CFD research
Specifications
Gas Monitoring——Tracer gas SF6，Freon134a，N2O，CO2，ethane and VOC’s，300+ gases can be selected |
Measurement range | 0.1 ppb-10 ppm |
Dynamic rate | 1:100000 |
Detection limit | 0.1 ppb |
Accuracy | 2% |
Response time | 3-10s |
Calibration | Factory calibration done before delivery |
Operation Environment |
Temperature | 0℃ ~ +45℃ |
Humidity | Below 90% RH, no condense |
Pressure | Ambient pressure |
Enclosure | IP20 (IEC 529) |
Vibration test | 33 Hz strong vibration |
Storage Environment |
Temperature | -20℃ ~ +60℃ |
Sampling Environment |
Temperature | 0 ~ +49℃ no condense |
Pressure | 930 mbar ~ 1100 mbar |
Humidity | Tdew +8 ℃ or higher |
Flow rate | 60 ml/min ~ 300 ml/min |
Particle | < 1 μm |
Dimension | 48.4cm Wx13.9cm Hx40.5cm D (19.1in Wx5.5in Hx16.0in D) |
Weight | Appx. 13 kg |
Connector | Specified quick plug for 3mm diameter tube，various plugs can be ordered upon request |
Electric parameter |
Power rating | 100 ~ 240VAC, 50 ~ 60 Hz |
Power consumption | 100W |
Interface | Ethernet、USB、AK |
The sampling points equipped with monitor, fine particle filter equipped |
Pump in-built, max. 100m sampling distance, PC embedded with 7" front display. |
Data storage appx. 2GB，up to 2-year data (@sampling continuously interval 15s） |
Data transfer via USB disk, USB port, Ethernet or Com port |
Compensate the interference from water vapor, particle automatically |
To work with multipoint sampler to extend to 12/24/32/64 channels |
Low adsorption SiO2 coated stainless steel valve set is used in multipoint sampler |
Working time for each channel can be defined 1~99min in multipoint sampler |
Dosing MFC and other accessories to be ordered upon request |
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