Product Details
CO-AX Electrochemical Carbon Monoxide Gas Sensor For Air Quality
Monitoring Environmental Monitoring Systems
1. Product Features:
- High Measurement Accuracy & Sensitivity: Delivers a sensitivity
range of 55 - 100 nA/ppm in 400 ppm CO, with a resolution of <
0.5 rms noise (ppm equivalent). This ensures precise detection of
even small changes in CO concentration, meeting strict monitoring
requirements.
- Fast Response Speed: Boasts a T90 response time of < 30 seconds
when transitioning from zero to 400 ppm CO. It can quickly capture
sudden increases in CO levels, providing timely alerts to potential
hazards.
- Low Drift for Long-Term Stability: Features minimal zero drift
(< 0.2 ppm equivalent change/year in lab air) and sensitivity
drift (< 6% change/year in lab air with monthly testing). This
guarantees consistent performance over extended periods, reducing
the need for frequent calibration and maintenance.
- Wide Operating Range & Environmental Adaptability:
- Operates reliably within a temperature range of -30 °C to 50 °C, a
pressure range of 80 - 120 kPa, and a humidity range of 15 - 90% rh
(continuous). It can adapt to various harsh or variable
environmental conditions, such as cold outdoor winters or humid
industrial areas.
- Has an over - gas limit of 4000 ppm, enabling it to withstand
temporary high - concentration CO exposure without permanent
damage, enhancing its durability in extreme scenarios.
- Long Service Life & Storage Life: Offers an operating life of >
24 months (until 80% of the original signal, with a 24 - month
warranty) and a storage period of 6 months at 0 - 20 °C (when
stored in a sealed pot). This provides long - term value for users
and simplifies inventory management.
- Compact & Lightweight Design: Weighs < 6 g, making it easy to
integrate into various devices. Its multiple standard package
options (20mm diameter, 32mm diameter, 20mm diameter with extra
height, and miniature) cater to different installation needs of
portable and fixed - site instruments.
- Low Zero Current Interference: Has a zero current of < ±3 ppm
equivalent in zero air, minimizing false alarms caused by
background electrical noise. It ensures that the detection results
accurately reflect the actual CO concentration in the environment.
2. Product Applications:
- Portable Gas Detection Instruments: Ideal for integration into
handheld CO detectors used by professionals like firefighters,
industrial workers, and emergency responders. These devices allow
on - site, real - time monitoring of CO levels in confined spaces
(such as basements, sewers) or accident scenes, ensuring the safety
of personnel.
- Fixed - Site Detection Systems: Used in fixed gas monitoring
stations installed in industrial facilities (e.g., chemical plants,
power plants, steel mills), where CO may be produced during
combustion or chemical processes. The sensor provides continuous
monitoring to prevent equipment damage and protect workers' health.
- Indoor Air Quality Monitoring: Suitable for residential,
commercial, and public buildings (such as homes, offices, schools,
and hospitals) to detect CO leaks from gas appliances (e.g.,
stoves, water heaters) or heating systems. It helps maintain a safe
indoor environment and alerts occupants to potential CO poisoning
risks.
- Environmental Monitoring Networks: Integrated into regional or
urban environmental monitoring networks. These networks collect CO
concentration data across a wide area to analyze air quality
trends, support environmental policy - making, and provide the
public with real - time air quality information.
- Automotive & Transportation Sectors: Used in vehicle exhaust gas
monitoring systems (for emission testing) or in - cabin air quality
monitoring. It helps ensure that vehicle emissions comply with
environmental standards and that the air inside the vehicle is safe
for passengers.
Measuring Range | 5 - 1000 ppm 2000 ppm (limit of performance warranty) |
Sensitivity | 55 - 100 nA/ppm in 400 ppm CO |
Response Time (T90) | < 30s from zero to 400 ppm CO |
Resolution | < 0.5 rms noise (ppm equivalent) |
Zero Current | < ±3 ppm equivalent in zero air |
Over Gas Limit | 4000 ppm |
Zero Drift | < 0.2 ppm equivalent change/year in lab air |
Sensitivity Drift | < 6% change/year in lab air, monthly test |
Operating Life | > 24 months until 80% original signal (24 - month warranted) |
Operating Temperature Range | -30 °C - 50 °C |
Pressure Range | 80 - 120 kPa |
Humidity Range | 15 - 90% rh continuous |
Storage Period | 6 months @ 0 - 20 °C |
Filter Capacity (H2S) | 250,000 ppm - hours |
Filter Capacity (NO2) | 500,000 ppm - hours |
Filter Capacity (NO) | 20,000 ppm - hours |
Filter Capacity (SO2) | 250,000 ppm - hours |
H2 Sensitivity (@10 °C, 900 ppm H2 in 900 ppm CO) | < 2% |
H2 Sensitivity (@20 °C, 900 ppm H2 in 900 ppm CO) | < 4% |
H2 Sensitivity (@30 °C, 900 ppm H2 in 900 ppm CO) | < 6% |
NO2 Sensitivity (@10 ppm NO2) | < -1% |
Cl2 Sensitivity (@10 ppm Cl2) | < 0.1% |
Company Profile
Yijiajie Electronics is a full range of silicon pressure sensors
from the United States, FREESCALE/, GE, MEAS, SMI, and a full range
of sensing and control products from the United States pressure,
temperature and humidity, gas flow, current, Hall effect, etc.,
Japan HAMAMATSU flame, UV sensors, photodiodes, Japan FIGARO, UK
CITY, ALPHASENSE full range of semiconductors, catalytic,
electrochemical gas sensors, French HUMIREL/MEAS humidity sensors
and other international well-known companies authorized agents or
distributors, to provide customers with product information,
products Solutions, product selection, supply guarantee and
logistics services, etc.

