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Help CenterDuct Type CO2 VOC Sensors
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Duct Type CO2 VOC Sensors
. CO2 VOC Sensors Features
u Designed for real time detecting carbon dioxide, air quality, temperature or relative humidity in air ducts.
u NDIR infrared CO2 sensor inside with special Self Calibration and up to 15 years’ lifetime. It makes CO2 measurement more accurate ad reliable.
u Mix gases sensor with high sensitivity for VOCs
from new furnitures, wall coverings, office equipment,
cleanser etc. and other pollutants from smoking and cocking etc.
u Combined temperature and humidity digital sensor provides a high accuracy measurement in full range.
u Provide up to 3 analog outputs (0~10VDC or 4~20mA or 0~5VDC) for CO2, air quality (VOC) and temperature or relative humidity.
u Modbus RS485 interface with outputs for
CO2, temperature, humidity and air quality (VOC).
u With LCD or without LCD selectable
u LCD display real-time measurements of CO2, air quality (VOC), temperature and relative humidity.
u Simple and smart design and installation of sensor probe with a water-proof and porous film
u Extendable probe meets more air duct systems
u 24VAC/VDC power supply.
u EU standard and CE-approval.
Detection Focus
ü Carbon Dioxide (CO2)
Indoor CO2 level is a universal accepted parameter for the condition of indoor ventilation and air quality.
A time period can be preset from 1 to 24 hours, e.g. 5 hours, then the monitor can display CO2 average level during
this period, which provides an objective and true data for the measurement of the air quality in a certain space.
u Non-dispersive infrared (NDIR) CO2 sensor with more than 10-year lifetime
u ABC self-calibration technology guarantees reliable CO2 measurement
u CO2 range: 0~2000ppm/0~5000ppm optional
u Rapid response, high stability and consistency
ü Air Quality (VOC)
The air quality sensor is a mix gases sensor with high sensitivity for VOC (kinds of volatile pollutant gases) such as ammonia, toluene, formaldehyde and cigarette smoke, alcohol, H2S, and carbon monoxide. So it is very suitable to detector the general indoor air quality in real time and long term. It responds quickly to any change of the concentration of such gases.
u Built in the semi-conductor mix gases sensor
u 5~7 years life time
u High sensitive to volatile gases like ammonia, toluene, formaldehyde, cigarette smoke, alcohol, H2S, etc.
u Small volume, lower consumption
ü Temperature and humidity
Combined digital temperature and humidity sensor with high accuracy and stability. It also has compensation to
CO2 and air quality which makes the measurements more accurate by minimizing environmental effects.
Typical Applications
u Residential houses, exhibition halls, restaurants, shopping malls, sports gymnasiums, conference rooms, etc.
u Museums, theaters, offices, classrooms, train stataions, airports, etc.
Specifications
Monitoring parameters | CO2 | Air Quality (VOC) | Temperature | Relative humidity | |||
Sensing element | Non-Dispersive Infrared Detector (NDIR) | Semiconductor mix gases sensor | Digital combined temperature and humidity sensor | ||||
Measuring range | 0~2000ppm(default) 0~5000ppm (selectable in the order) | 0~30ppm | 0°C~50°C(32°F~122°F) (default) | 0~100%RH | |||
Display Resolution | 1ppm | 5ppm | 0.1°C | 0.1%RH | |||
Accuracy@25°C(77°F) | ±50ppm + 3% of reading | ------- | ±0.4°C (0°C~50°C) | ±3%RH (20%-80%RH) | |||
Life time | 15 years (normal) | 5~7 years | 10 years | ||||
Calibration cycle | ABC Logic Self Calibration | ------- | --------- | -------- | |||
Response Time | <2 minutes for 90% change | <1 minute (for 10ppm hydrogen, 30ppm ethanol) <5 minute (for a cigarette) in 20m2 room | <10 seconds to reach 63% | ||||
Warm up time | 2 hours (first time) 2 minutes (operation) | ||||||
Electrical Characteristics | |||||||
Power supply | 24VAC/VDC |
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Consumption | 3.5 W max. ; 2.5 W avg. |
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Analog Outputs | Two or three analog outputs 0~10VDC(default) or 4~20mA (selectable by jumpers) 0~5VDC (selected at place the order) |
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Modbus RS485 interface | RS-485 with Modbus protocol, 19200bps rate, 15KV antistatic protection, independent base address |
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Conditions of Using and Installation |
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Operation conditions | -10~50°C(14~122°F); 0~95%RH, non condensing |
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Storage conditions | -40~70°C(-40~158°F)/ 5~95%RH |
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Weight | 320g |
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Installation | Fixed on the air duct with 100mm installation hole size |
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IP class of the housing | PC/ABS IP50 for models without LCD; IP40 for models with LCD |
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Standard | CE-Approval |
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