1、 Introduction to Factory Dust Concentration Online Detector with Alarm Device

The BYF-DT100 Factory Dust Concentration Online Detection Alarm is a device developed and produced by Shenzhen Boyunchuang Environmental Technology Co., Ltd. for detecting various dust concentrations in production workshops. It is mainly used for online measurement of dust concentration content in workshop workplaces and warning of exceeding standards. To prevent harmful effects on the health of workers due to high dust concentration or explosion accidents caused by high concentration, which may endanger life safety. Widely used in flour mills, cement factories, feed mills, polishing factories, furniture factories, wood factories, plastic factories and other fields that are prone to dust generation.

2、 Popularization of dust knowledge

1) Why does dust explode?

The surface area of countless tiny dust particles combined is very large. After an object turns into countless dust particles, its surface area greatly increases, and the opportunities for surface molecules to come into contact with air increase, making the chemical properties of surface molecules particularly active. They can burn fully with minimal heat and air. Countless dust burns fiercely, causing the surrounding air to expand violently, like explosives, causing explosions.

2) What are the conditions for dust explosion?

There are three conditions for dust explosion: first, the concentration of dry fine dust and floating dust per cubic meter reaches 30-40 grams of coal powder, 40 grams of aluminum powder, 100 grams of iron powder, 12.6-25 grams of wood powder, and 9.7 grams of wheat powder; The second is oxygen, with an oxygen content of 21% in the air; The third is thermal energy, a 40 millijoule fire source.

3) What are the common combustible dust?

The most common combustible dust includes coal dust, corn dust, potato dust, aluminum dust, zinc dust, magnesium dust, sulfur dust, etc. For example, if aluminum is widely used in electronic products, the dust generated during the production process belongs to typical combustible dust

4) Can dust explosion tragedies be avoided?

In most enterprises in China, workers know very little about the hazards of dust explosions.

3、 Characteristics of Factory Dust Concentration Online Detector with Alarm Device

1. Stable and reliable communication, wide range power supply DC12-24V;

2. Complete anti reverse, overvoltage, overcurrent, and inter line protection capabilities;

3. Carefully designed circuit software and hardware, with low failure rate and short stability time;

4. Original imported laser optical principle sensors and professional grade signal processing chips ensure the accuracy of sensor data;

5. The structure considers aerodynamic principles, achieves automatic real-time sampling, and can be used for a long time;

6. Equipped with alarm and over limit warning.

4、 Technical parameters of factory dust concentration online detector with alarm

Technical Parameter	BYF-DT100
Detect gas	Dust particles
Detection Principle	Principle of Laser Optical Detection
measuring range	0～30mg/m³
resolution	0.001mg/m³
accuracy	≤±15%F.S
Warm-up time	30S
sampling interval	3S
Response time (T90)	<1 minute
service life	More than 3 years
ALARM VALUE	Default alarm for exceeding 20mg/m ³, with a return difference of 5mg/m ³
audible and visual alarm	ABS material, wall mounted, alarm sound 120dB, flashing frequency 150 times/minute
Supply Voltage	DC 12-24V (with power adapter 220V)
signal output	4-20mA switch signal RS485 Modbus RTU
work environment	-10～50℃； 0-95% RH (no condensation)
Environment	-30～60℃； 0-100% RH (no condensation)
Shell material	Aluminum alloy detector, ABS alarm
protection grade	IP30
Installation method	Wall mounted installation
Weight/Size	300g/detector: 195mm × 115mm × 35mm alarm: 122mm × 72mm × 43mm
notes

5、 Factory dust concentration online detector with alarm size installation

1. First fix the detector on the wall, and then fix the alarm in a certain position

2. Connect the front line of the two devices properly; Connect the power supply

3. Do not connect the transmitter to a voltage higher than 24VDC. To prevent excessive voltage from burning out the sensor.

4. Install the transmitter at the location that needs to be tested, away from the heating element or steam source, and prevent direct sunlight.

6、 Factory dust concentration online detector with alarm wiring instructions

Four core wire color	Wiring Definition	describe
+	Power supply positive (+)	DC 12-24V
-	Negative power supply (-)	GND
SA	Output positive	RS485（A）； Analog quantity (+)
SB	Output negative	RS485（B）； Analog quantity (-)
N	Reserved interface
N	Reserved interface