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Threshold Formaldehyde HCHO Detection Sensor - 0-20ppm, 2 image

Threshold Formaldehyde HCHO Detection Sensor - 0-20ppm, 3 image

Threshold Formaldehyde HCHO Detection Sensor - 0-20ppm

SKU:

25-00016923

Part Number: SEN0595

CompanyDFRobot Part NumberSEN0595

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€26⁸⁰

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Description
Specifications

This formaldehyde gas sensor differs from most gas sensors on the market as it does not provide specific gas concentration data. Instead, it detects whether the surrounding environment exceeds or falls below a fixed threshold. It operates on a wide voltage range of 5-24V, with high and low-level outputs.

The sensor is equipped with an indicator light for easy observation of its status, making it user-friendly. When the sensor detects a gas concentration above the threshold, it outputs a high-level signal and the indicator light illuminates. Conversely, when the concentration falls below the threshold, it outputs a low-level signal and the indicator light turns off.

Note: The threshold of this sensor is factory-fixed and cannot be modified by the user. Custom threshold parameters can be set for bulk orders.

Features

Threshold-based detection
Wide voltage range, 5-24V
High and low-level outputs
Indicator light for status observation
User-friendly design

Applications

Indoor air quality monitoring
Safety and occupational health
Environmental monitoring
Smart home systems
Research and development

Technical data

Power Supply Voltage: 5-24V
High level output range: 5-24V（Output high voltage = supply voltage）
Load Current: ＜100mA
Static Current: ＜10mA
Detectable Gas: Formaldehyde (CH₂O, HCHO)
Resolution: 0.01ppm
Repeatability: ＜2% of the output value
Threshold: 0.06ppm≈0.075mg/m³ (Factory-fixed threshold, cannot be modified by the user)
Maximum Load: 20ppm
Response Time: ＜15s
Zero-Point Output: -0.10~0.02ppm
Output Mode: High-level and low-level signals
Line sequence: Black line - OUT, Brown line - VCC, Blue line - GND
Pressure Range: 1±0.1 standard atmospheric pressure
Lifespan: 3 years (in air)
Storage Environment: 10°C ~ 30°C
Operating Temperature Range: -10°C ~ 50°C
Operating Humidity Range: 15% ~ 90% RH
Long-Term Stability: ＜2% of the signal value per month
Dimensions: L×W×H=30.35×47.4×47.4mm
Cable Length: 50cm
Housing Material: Black PCV0 flame-retardant material

About formaldehyde

Formaldehyde, with the chemical formula CH₂O or HCHO, is a colorless gas with a strong, pungent odor. It is soluble in alcohols and ethers. Acute formaldehyde poisoning is a systemic disease primarily characterized by damage to the eyes and respiratory system, caused by exposure to high concentrations of formaldehyde vapor. When the concentration reaches 0.08-0.09mg/m³ in ambient air, children may experience mild wheezing. At 0.1mg/m³, there may be odor and discomfort. At 0.5mg/m³, it can cause eye irritation and tear production. At 0.6mg/m³, it can cause discomfort or pain in the throat. Higher concentrations may result in nausea, vomiting, coughing, chest tightness, asthma, and even pulmonary edema. A concentration of 30mg/m³ can be fatal.