Threshold Formaldehyde HCHO Detection Sensor (0-20ppm)

Description

• Threshold Formaldehyde HCHO Detection Sensor (0-20ppm)
• Features an indicator light for easy monitoring
• Operates within a broad voltage range of 5-24V
• Detects formaldehyde levels exceeding or below a set threshold
• Housed in black PCV0 flame-retardant material

The Threshold Formaldehyde HCHO Detection Sensor (0-20ppm) is a unique gas sensor that does not provide specific gas concentration data. Instead, it is designed to detect whether the surrounding environment’s formaldehyde levels exceed or fall below a predetermined threshold. This sensor operates within a broad voltage range and offers high and low-level outputs.

One of the distinguishing features of this sensor is its indicator light, which allows for easy monitoring of its operational status. When the sensor detects a formaldehyde concentration above the threshold, it emits a high-level signal and the indicator light illuminates. On the other hand, when the concentration dips below the threshold, the sensor outputs a low-level signal and the indicator light extinguishes.

Formaldehyde, denoted chemically as CH2O or HCHO, is a colorless gas with a potent, pungent odor. It is soluble in alcohols and ethers. Exposure to high concentrations of formaldehyde vapor can lead to acute formaldehyde poisoning, a systemic disease primarily characterized by damage to the eyes and respiratory system. Symptoms can range from mild wheezing in children when the concentration reaches 0.08-0.09 mg/m3 in ambient air, to eye irritation, throat discomfort, nausea, vomiting, coughing, chest tightness, asthma, and even pulmonary edema at higher concentrations. A concentration of 30 mg/m3 can be lethal.

Please note that the threshold of this sensor is factory-fixed and cannot be modified by the user. For accurate measurement of formaldehyde concentration, the MEMS Formaldehyde HCHO Gas Detection Sensor is recommended.

View moreWhat’s Included

• 1x Threshold Formaldehyde HCHO Detection Sensor (0-20ppm)

Dimensions

• 30.35 x 47.4 x 47.4 mm (Lx W xH)
• Cable Length: 50 cm

Specifications

• Power Supply Voltage: 5 – 24 V
• High-level output range: 5 – 24 V (Output high voltage = supply voltage)
• Load Current: <100 mA
• Static Current: <10 mA
• Detectable Gas: Formaldehyde (CH2O, HCHO)
• Resolution: 0.01 ppm
• Repeatability: <2% of the output value
• Threshold: 0.06ppm 0.075 mg/m3 (Factory-fixed threshold, cannot be modified by the user)
• Maximum Load: 20 ppm
• Response Time: <15s
• Zero-Point Output: -0.10 ~ 0.02 ppm
• Output Mode: High-level and low-level signals
• Line sequence: Black line -OUT, Brown line -VCC, Blue line -GND
• Pressure Range: 10.1 standard atmospheric pressure
• Lifespan: 3 years (in air)
• Storage Environment: 10~ 30 C
• Operating Temperature Range: -10~ 50 C
• Operating Humidity Range: 15% ~ 90% RH
• Long-Term Stability: <2% of the signal value per month
• Housing Material: Black PCV0 flame-retardant material