ShenzhenYijiajie Electronic Co., Ltd.
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 2200 |
| Delivery Time | 5-8 days |
| Packaging Details | Canned |
| Response Time T90 | ≤ 30 s |
| Zero Signal | -3 ~ +10 ppm |
| Baseline Drift | < 20 ppm |
| Bias Voltage | 0 mV |
| Operating Temperature | -20℃ to +50℃ |
| Humidity | 15%–90% RH |
| Pressure | ±0.1 atm |
| Long-Term Stability | < 2% signal/month |
| Brand Name | YJJ |
| Model Number | 3CO-4000CT 051‑3400‑100 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram | Supply Ability | 2200 |
| Delivery Time | 5-8 days | Packaging Details | Canned |
| Response Time T90 | ≤ 30 s | Zero Signal | -3 ~ +10 ppm |
| Baseline Drift | < 20 ppm | Bias Voltage | 0 mV |
| Operating Temperature | -20℃ to +50℃ | Humidity | 15%–90% RH |
| Pressure | ±0.1 atm | Long-Term Stability | < 2% signal/month |
| Brand Name | YJJ | Model Number | 3CO-4000CT 051‑3400‑100 |
| Place of Origin | CHINA | ||
| High Light | electrochemical carbon monoxide sensor ，CO sensor for flue gas ，boiler emissions CO detector | ||
Product Description:
YJJ 3CO-4000CT 0-4000PPM Electrochemical Carbon Monoxide (CO) Sensor for Flue Gas / Boiler Emissions
Features:
I. Core Parameters (20℃, standard atmospheric pressure)
1. Detection Performance
Range: 0–4000 ppm CO
Maximum Overload: 20000 ppm (short-term)
Sensitivity: 0.030 ± 0.006 μA/ppm
Resolution: 1 ppm
Linearity: Full range of 0–4000 ppm
Response Time T90: ≤ 30 s
Zero Signal: -3 ~ +10 ppm
Baseline Drift (-20℃ to 50℃): < 20 ppm
Bias Voltage: 0 mV (no polarization required)
2. Environment and Lifespan
Operating Temperature: -20℃ to +50℃
Humidity: 15%–90% RH (no condensation)
Pressure: ±0.1 atm
Expected Lifespan: Approximately 3 years in air
Long-Term Stability: < 2% signal/month
Storage Conditions: 10℃–30℃, can be stored unopened for 6 months
Warranty: 12 months
3. Physical and Electrical
Size: Φ32 mm × Height 16 mm (3 Series Standard Packaging)
Shell: ABS + Metal Ventilated Film
Maximum Open Circuit Voltage: 1.3 V
Maximum Current at 20000 ppm CO: < 1 mA
Maximum Short Circuit Current: < 1.0 A
II. Key Features
High Range Suitable for Industrial Emissions: 0–4000 ppm, covers high concentration CO scenarios in boilers / flue gas, with strong overload capacity.
Wide Temperature Stability: Small baseline drift (-20℃ to 50℃), suitable for outdoor / high-temperature industrial environments.
No Bias Voltage, Easy Integration: 0 mV bias voltage, simplifies circuits, suitable for portable / fixed instruments.
Long Lifespan and Low Maintenance: 3-year lifespan, good stability, reduces replacement costs.
Pin Compatibility: Directly replace CITY 3FF/3 series, no board modification required.
III. Main Applications
1. Emission Monitoring of Smoke / Boiler (Core)
Industrial boilers, chimneys, burner exhaust CO detection (environmental compliance)
Incinerators, heat treatment furnaces, kiln combustion efficiency and toxic gas monitoring
2. Industrial Process Safety
Metallurgy, chemical industry, coking workshop CO leakage monitoring (to prevent poisoning)
Coal mines, tunnels, underground pipe galleries CO concentration warning
3. Gas Analysis Instrument OEM
Portable smoke analyzers, handheld CO detectors core sensing element
Fixed industrial gas detectors, multi-parameter monitors (such as GX-3R four-in-one) CO channel replacement part
4. Emergency and Environmental Protection
CO Search and Rescue at Fire Scenes (high concentration CO in combustion products)
Anaerobic decomposition CO monitoring in landfill sites, sewage treatment plants
Specifications:
| Range | 0–4000 ppm CO |
| Maximum Overload | 20000 ppm (short-term) |
| Sensitivity | 0.030 ± 0.006 μA/ppm |
| Resolution | 1PPM |
| Linearity | Full range of 0–4000 ppm |
| T90 Response Time | ≤ 30s |
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2006
Total Annual:
900000-1000000
Employee Number:
50~80
Ecer Certification：
Verified Supplier
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, ph... 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, ph...
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