JB/T 12934-2016 in English

VALID

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Standard No:	JB/T 12934-2016
Document status:	VALID
Title in English:	Formaldehyde gas sensor
Title in Chinese:	甲醛气体传感器
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2016-10-22
Implemented on:	2017-04-01
ICS Classification:	13.040.20-Ambient atmospheres
Chinese Classification:	N05-Material and component for instrument and meter
Professional Classification:	JB-Machinery

Introduction

Analysis of the core content of the standard

The standard stipulates that formaldehyde gas sensors must meet 20 performance indicators in five categories:

Environmental adaptability: Pass rigorous tests such as -25℃~55℃ temperature storage, alternating humidity and heat, vibration and shock
Accuracy index: Long-term sensitivity drift ≤18%, zero drift ≤0.5×10^-6
Dynamic characteristics: Response/recovery time does not exceed 120 seconds

The standard establishes a three-level verification system:

Basic test: Sensitivity is determined using the step gas concentration change method
Environmental test: 12 environmental stress tests are carried out in accordance with the GB/T 2423 series standards
Long-term stability: Drift characteristics verified through 720 hours of continuous testing

Professional suggestions for standard implementation:

Application scenarios	Implementation points
Industrial production environment	Give priority to electrochemical principle sensors, and conduct alternating humidity and heat verification regularly
Civilian testing equipment	Focus on monitoring long-term zero drift indicators, and it is recommended to calibrate every 6 months