WZ-H3-NK

Product catalog summary

Brief Introduction: The WZ-H3-NK module is designed for high-temperature environments exceeding 60℃, primarily for formaldehyde (HCHO) detection in fuel cell vehicles. It utilizes a solid electrolyte, eliminating risks of leakage or drying out, and is resistant to interference from low-concentration gases like ethanol. The module is factory-calibrated for direct integration.

Typical Applications and Key Features: The module is suitable for vehicles, air conditioners, smart homes, portable and wearable devices, and air purifiers. Key features include selective detection, high temperature resistance, high precision, fast response, long service life, low power consumption, and high stability.

Technical Specifications: The module operates on a micro fuel cell principle, detecting HCHO within a range of 0-1ppm, with an overload capacity of 5ppm. It requires an input voltage of 3.3-5V, has a response time of less than 90 seconds, and a resolution of 0.01ppm. It operates within a temperature range of -40℃ to 70℃ and a humidity range of 10%-90% RH. The module has a lifetime of 6 years and a warranty period of 12 months.

Cross Sensitivity: The module shows minimal interference from gases like alcohol, benzene, acetic acid, ammonia, carbon monoxide, and hydrogen at specified concentrations.

Communication Protocol: The module uses serial communication with a baud rate of 9600, 8 data bits, 1 stop bit, and no parity bit. It supports active upload and Q&A communication types, with commands for switching modes and reading gas concentrations.

Checksum Calibration: A function is provided for checksum calibration to ensure data integrity during communication.

Notes: Users are advised against altering the sensor or electronic components on the PCB and should avoid exposure to organic vapors, solvents, and high gas concentrations. The module is not recommended for industrial safety or personal monitoring.

Contact Information: ProSense Technologies Co., Ltd., located in Shenzhen, China, can be contacted via phone or email for further inquiries.

Catalog excerpts

Operation manual for WZ-H3-NK HCHO Module WZ-H3-NK Selective & High Temperature Resistant Formaldehyde Module

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& Operation manual for WZ-H3-NK HCHO Module WZ-H3-NK selective & high temperature resistant formaldehyde module is the one launched specially for application in cases where temperature is higher than 60 °C . WZ-H3-NK HCHO module is the first application of solid electrolyte integrated in fuel cell vehicles to HCHO detection —real solid electrolyte, free from electrolyte leakage or dry out; WZ-H3-NK selective HCHO module is free from the influence of the interference gases at low concentration, such as C2H5OH and can generate accurate detection result. WZ-H3-NK selective HCHO module is pre-calibrated...

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& Operation manual for WZ-H3-NK HCHO Module

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& Operation manual for WZ-H3-NK HCHO Module Module makes use of serial communication. Communication configuration parameters are:

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Operation manual for WZ-H3-NK HCHO Module （ug/m3） 0xFF Gas concentration = concentration (high byte)*256 + concentration (low byte) Checksum calibration /************************************************************************* *Function name：unsigned char FucCheckSum(uchar *i,ucharln) *Function description：checksum calibration[Take Not(Byte1+Byte2+…Byte7) +1] *Note：Take Not(Byte1+Byte2+…ByteX (X>2) *************************************************************************/ unsigned char FucCheckSum(unsigned char *i, unsigned char ln) { unsigned char j, tempq=0; i+=1; for(j=0; j<(ln-2); j++) {...

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