SKU: SENS-0815
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Dart Sensors WZ-S-K Formaldehyde (HCHO) Sensor Module, Detection Range: 0-2ppm - Digital Output

₹1,799.00 (Inclusive of all taxes)
Out of Stock

The Dart Sensors WZ-S-K is a pre-calibrated formaldehyde (HCHO) detection module utilizing micro fuel cell technology, delivering direct PPM concentration readings via a digital output signal. Designed for easy integration into air quality monitoring systems, Arduino projects, and industrial PLCs with a 3.3V to 5V DC supply.

Features

  • Micro fuel cell sensor for precise formaldehyde (HCHO) detection.
  • Digital output provides direct PPM concentration values.
  • Factory pre-calibrated for immediate system integration.
  • Compact and lightweight design at 4 grams.
  • Extended operational lifetime of up to 5 years in air.

Out of stock

Description

The WZ-S-K module employs an advanced micro fuel cell sensing principle. When formaldehyde molecules contact the working electrode (anode), they are oxidized, generating a proportional electrical current. This raw signal is acquired and processed by an onboard microprocessor, which converts it into a precise PPM value for digital output.

Designed for reliable long-term operation, the sensor features a fast warm-up time of under 3 minutes and is built to withstand typical indoor environmental conditions. Its pre-calibrated nature eliminates the need for user-side calibration, simplifying integration into air handling units, smart home systems, and portable detection devices.

Key Features

  • Micro Fuel Cell Sensing Technology for high selectivity to HCHO.
  • Digital signal output for direct, easy-to-process PPM readings.
  • Factory pre-calibrated for plug-and-play integration.
  • Fast warm-up time of less than 3 minutes to operational readiness.
  • High resolution of 0.001 ppm for detecting minute concentration changes.
  • Robust design with an operational lifetime of up to 5 years in air.
  • Compact form factor ideal for embedded applications.
  • Optimized performance-to-cost ratio for continuous monitoring solutions.

Applications

  • Indoor air quality (IAQ) monitoring in homes, offices, and schools.
  • Integration into HVAC systems for formaldehyde level control.
  • Portable air quality testers and environmental monitoring devices.
  • Safety and compliance monitoring in furniture manufacturing and wood processing facilities.
  • Research and development projects for atmospheric chemistry studies.

Technical Specifications

Model NumberWZ-S-K
Detectable GasFormaldehyde (HCHO)
Detection Range0 to 2 ppm (Overload up to 10 ppm)
Input Voltage3.3 - 5 V DC (Spec sheet also lists 5-7V)
Output SignalDigital (PPM value)
Resolution0.001 ppm
Warm-Up Time< 3 minutes
Operating Temperature20°C to 50°C
LifetimeUp to 5 years in air
Sensor Weight4 g
Shipping Weight0.015 kg
Shipping Dimensions12 × 8 × 2 cm

Frequently Asked Questions

What is the operating voltage range for the WZ-S-K sensor?

The module is designed to operate from a 3.3V to 5V DC power supply, as indicated for typical microcontroller compatibility. The product specification sheet also notes a range of 5-7V, suggesting flexibility, but for standard digital logic levels and Arduino/Raspberry Pi integration, the 3.3V-5V range is recommended.

Does this sensor require calibration before use?

No, the WZ-S-K formaldehyde sensor is factory pre-calibrated. It outputs a direct digital PPM value, allowing for immediate integration into your monitoring system without additional calibration steps, provided it is used within its specified environmental conditions.

What is the sensor's response time to changes in formaldehyde concentration?

The sensor features a fast response, characterized by a T90 time (time to reach 90% of the final reading). While the exact T90 value is model-dependent for electrochemical sensors, the module's design and micro fuel cell technology ensure rapid detection suitable for dynamic air quality monitoring applications.

Can this sensor be used outdoors or in harsh environments?

The WZ-S-K is primarily designed for indoor air quality monitoring within its specified operating temperature range of 20°C to 50°C. It is not rated for outdoor use, exposure to liquids, or extreme environmental conditions unless housed in a suitable protective enclosure.

Package Includes

  • 1 x Dart Sensors WZ-S-K Formaldehyde Sensor Module

Additional Information

Weight 0.015 kg
Dimensions 8 × 12 × 2 cm