1、 Introduction to formaldehyde gas import sensor detection module

The BYC02 formaldehyde sensor module adopts imported Dat electrochemical gas sensor calibration output signals TTL and IIC, designed for low-cost application users of integrators. The experimental chamber is uniformly calibrated, and the data is stable and reliable.

2、 Application fields of formaldehyde gas import sensor detection module

This product is widely used in scientific research institutions, portable/handheld detectors, fixed gas transmitters, atmospheric environment detectors, industrial toxic and harmful gas transmitters, etc.

3、 Formaldehyde gas

Formaldehyde is also known as formaldehyde. Colorless gas, with a special irritating odor, has a stimulating effect on human eyes, nose, etc. Easy to dissolve in water and ethanol. The concentration of aqueous solution can reach up to 55%, usually 40%. It is called formaldehyde water, commonly known as formalin, and is a colorless liquid with a pungent odor. The main harm of formaldehyde is its irritating effect on the skin and mucous membranes. When formaldehyde reaches a certain concentration indoors, people feel uncomfortable. Formaldehyde concentrations greater than 0.08mg/m ³ can cause redness, itching, discomfort or pain in the throat, hoarseness, sneezing, chest tightness, wheezing, dermatitis, etc. The newly renovated room has a high formaldehyde content, which is the main cause of many diseases.

4、 Technical parameters of formaldehyde gas import sensor detection module

Technical Parameter	BYC02
Detect gas	Formaldehyde (HCHO)
Detection Principle	Principle of Electrochemical Detection
measuring range	0-2.00ppm
resolution	0.01ppm
accuracy	Within 0.5ppm, ± 0.03ppm; 0.5ppm~2ppm, ± 10% reading ± 0.05ppm or ± 0.2ppm (whichever is greater)
Sensor lifespan	2-3 years service life
Warm-up time	＜180S
sampling interval	3S
Response time (T90)	＜30S
Nonlinear	±2%
repeatability	±2%
Supply Voltage	DC 5V or 3.3V
power consumption	﹤65 mW
signal output	TTL and IIC
work environment	-20～50℃； 0-95% RH (no condensation)
Environment	-40～60℃； 0-100% RH (no condensation)
Weight/Size	32mm (length) x 25mm (width) x 16.7mm (height), with needle arrangement, needle arrangement specification is 2.54 x 7pin
Fixed hole spacing	17.7mm × 17.7mm × Φ 3.5 diagonal two through holes (see attached figure)
notes

5、 Packaging size of formaldehyde gas import sensor detection module

6、 Pin definition of formaldehyde gas import sensor detection module

order	Pin marking	Parameter	data	notes
Pin 1	SCL	I2C pin
Pin 2	SDA	I2C pin
Pin 3	+5V	Supply Voltage	Maximum 5V ± 0.1V	(+5v)
Pin 4	GND	Ground (negative pole)		Common ground
Pin 5	TX	TTL UART		9600BPS, 8-bit, no checksum, 1 stop position The default address is: 01
Pin 6	RX	TTL UART
Pin 7	EA	Serial port output enable control
Pin 1	3.3V
Pin 2	GND