Gas Sensor Modules
CB-HCHO-V4
Formaldehyde Gas Sensor
- Model
- CB-HCHO-V4
- Category
- Gas Detectors & Alarms › Gas Sensor Modules
Parameters: HCHO, VOC, TVOC
IndustriesIndoor Air Quality & Public Facilities
Measurement PrincipleElectrochemical
Overview
CB-HCHO-V4 is the manufacturer's fourth-generation electrochemical formaldehyde sensor with a dual-channel design and proprietary electrolyte packaging, outputting HCHO and TVOC with built-in temperature/humidity compensation. Sensitivity reaches 1 ppb, with UART, IIC or PWM output and up to 3 years of life in air.
Key Features
- High sensitivity up to 1ppb
- HCHO, VOC in-one design
- Full range temperature and humidity compensation
- Unique dual-channel design, good anti-interference
- Multiple communication methods：URAT、IIC、PWM
- Lifetime can reach 3 years (in air)
Measured Parameters
| Parameter | Measuring Range |
|---|---|
| HCHO | 0~1 ppm |
| VOC | 0~10 ppm (alcohol equivalent) |
| TVOC | 0~10 ppm (alcohol equivalent) |
Specifications
| Working principle | Electrochemical |
|---|---|
| Measurement range | HCHO: 0~1ppm; / VOC:0~10ppm(equivalent alcohol concentration); / TVOC: 0~10ppm(equivalent alcohol concentration); |
| HCHO measurement accuracy | ±0.030ppm or ±10% reading, whicherver larger |
| Resolution | HCHO:1ppb; / VOC:0.01ppm; / TVOC:0.01ppm |
| Response time T90 | 50s (@25±2℃,50±10%RH) |
| Working condition | 0~40℃;15~95%RH(Non-condensing) |
| Storage condition | -20~50℃;0~95%RH(Non-condensing) |
| Working voltage | DC(+3. 5V ~ +5.5V) |
| Working current | <15mA |
| Signal output | UART_TTL(3.3V);IIC(Reserved);PWM(Reserved) |
| Dimensions | W23*H32*D7(mm) |
| Lifetime | 3 years (@0.1ppm Formaldehyde concentration) |
Applications
- IAQ applications
- Fresh air system controllers
- Air quality monitors
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