Cloth bag leak detector-HR-BDM-

The product is developed and manufactured by our company. It adopts the most advanced practical technologies—Charge Induction. It has unique circuit design, new device application, sealed measuring electrode, superb insulation coating process. And also it can steady amplify very week electric signals. All of these ensure online continuous measuring dust concentration. The product is successfully applied for a design patent , a utility model patent and a explosion-proof certificate.

The instrument is widely used in iron and steel plants, power plants, petroleum industry, chemical industry, pharmaceutical plants, mining industry, etc.. The instrument can simultaneously on-line monitor coal powder concentration of blast furnace and pulverized coal fired boiler. The product abandons the old way which relys on manual timing sampling analysis. Also the product can timely detect dust emission, avoid available dust erosion，protect the gas recycling production equipment and reduce consumption. Therefore, it is welcomed by users.

Working Principle

Gas-solid flow containing dust particles transports in cloth bag box or branch pipes. In this process, dust particles and dust particles, dust particles and pipe wall  will collide and rub, so dust particles will be brought electric charge and form electrostatic field.  When the dust particles near the sensor probe, the probe can induce corresponding positive and negative charge. In the movement, the charge will bring current signal. The exchange signal and dust content have a direct mathematical relationship. The electrical can be amplified, processed and then sensor can measure dust concentration accurately（mg/Nm³）.

Features and Benefits

1. The instrument adopts the most advanced practical technologies—Charge Induction, with high sensitivity and linearity;

2. The motherboard, which be built in Integrated Sensor, can output 4－20mA signal. The signal can be transmitted safely and has anti-interference ability.

3. Measuring electrode has imported spraying protective material, which  heat-resistant, corrosion resistant and anti-adsorption. All of these improve the product quality.

4. The product has a design patent and a utility model patent. Air connector prevents measured gas leakage and measuring electrode impact extrusion due to compression. Therefore, the product protects the safety of the transmitter and staff.

5. Automatic Zero System can guarantee checking point convenient.

6. DC24V polarity power supply avoids damaging to the transmitter because of wiring error.

7. The BDM-H has intelligent circuit design and three alarm outputs. The alarm value can be arbitrarily set.