ShenzhenYijiajie Electronic Co., Ltd.
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 1000 |
| Linearity | Linear up to 2000ppm |
| Repeatibility | < ±2 CO equivalent |
| Recommended Load Resistor | 10 ohms |
| Resolution (depend on electronic) | < 0.5 ppm typical |
| Temperature Range | -30°C to +50°C |
| Pressure Range | 800 to 1200 mbar |
| Operating Humidity Range | 15% to 90% RH |
| Brand Name | SGX |
| Model Number | SGX-4CO |
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram | Supply Ability | 1000 |
| Linearity | Linear up to 2000ppm | Repeatibility | < ±2 CO equivalent |
| Recommended Load Resistor | 10 ohms | Resolution (depend on electronic) | < 0.5 ppm typical |
| Temperature Range | -30°C to +50°C | Pressure Range | 800 to 1200 mbar |
| Operating Humidity Range | 15% to 90% RH | Brand Name | SGX |
| Model Number | SGX-4CO | ||
| High Light | long life carbon monoxide gas sensor ，small volume carbon monoxide gas sensor | ||
Product Description:
SGX-4CO small volume long life carbon monoxide gas sensor is used for consumer smoke gas detectors
Features:
SGX specializes in the development and production of air quality sensors, the SGX-4COis a small-size, long-life carbon monoxide gas sensor suitable for consumer smoke gas detector applications.
The electrochemical gas sensor needs to provide a stable bias between the Sensing electrode and the Reference electrode. The voltage of the Reference electrode is controlled by the Counter electrode, so the bias is generally stabilized by controlling the Counter electrode with the op amp. The sensor is a current output, although the current size is proportional to the gas concentration but the value is very small, so a mutual resistance amplifier is needed to provide current amplification and convert voltage to the MCU and other processing units. The amplifier circuit often also needs to achieve zero setting and magnification times, and the voltage output representing the gas concentration also needs to collect temperature and pressure information to compensate.
The SGX-4CO has a bias voltage Vref of 0, and the op amp U1.2 controls the Counter electrode to keep the bias constant at 0. R2's 10-ohm resistance and the equivalent capacitance inside the sensor form an RC oscillation circuit to improve sensor response time. R3 resistance control amplification, the current sensitivity of SGX-4CO is 30nA/ppm, so the circuit output sensitivity is 25K*30nA/ppm=0.75mV/ppm, pay attention to the output sensitivity multiplied by the maximum measurement range of 500ppm cannot exceed 1.3V, otherwise the output can not cover the whole measurement range.
Specifications:
| Range | 0 – 2000 ppm |
| Output Signal | 70 ± 20nA / ppm |
| Typical Baseline Range | ±2 ppm CO equivalent |
| Filter Capacity | >20 000 ppm Hours |
| T90 Response Time | < 30 sec |
| Maximum Overload | 5000 ppm |
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 HONEYWELL pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV se... 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 HONEYWELL pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV se...
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