Dust density measuring instrument

NegotiableUpdate on 01/20

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Dust density measuring instruments are widely used in various industrial applications, including steelmaking, power generation, petroleum, chemical, pharmaceutical, building materials processing, coal mining and mining, cement manufacturing and packaging industries. Typical applications include detecting bag filter bag damage in bag filters

Product Details

1、 Product Overview

Dust density measuring instrumentWidely used in various industrial applications, including steelmaking, power generation, petroleum, chemical, pharmaceutical, building materials processing, coal mining and mining, cement manufacturing and packaging industries. Typical applications include detecting damaged filter bags in bag filters,

粉尘密度测量仪

Online monitoring of dust concentration of various dust collectors, materials, boiler flue gas, gas pipeline dust concentration in iron making gas dedusting process, or total amount monitoring of powder material recovery and product transportation. Especially for online monitoring of dust concentration in TRT power generation gas pipelines, it plays an important role in real-time monitoring whether the dust in the gas pipelines meets the requirements of TRT power generation, thereby ensuring that the fans are not worn out. This device has high sensitivity, accurate and timely signals, and the sensor can directly output 4-20mA (or RS485 communication, Modbus RTU protocol), reducing signal interference during transmission, making it a practical dust online monitoring device for various industrial enterprises.

Dust density measuring instrumentIt is one of the important equipment to ensure the safe and environmentally friendly operation of dust removal equipment systems. It can integrate operation, display, alarm, and system operation status traceability, achieve real-time online monitoring of dust concentration in the clean air chamber of the dust collector, prevent dust concentration exceeding the standard due to factors such as bag dropping and leakage during operation, eliminate hidden dangers, improve equipment safety guarantee, timely, continuously, and accurately reflect equipment operation status, avoid safety accidents, and reduce equipment accident rate.

2、 Product Features

1. The practical technology used - improved AC coupling technology, has high sensitivity and good linearity for dust detection. Dust contamination of the probe does not affect the measurement sensitivity and is maintenance free and cleaning free.

2. Standard two-wire 4-20mA current output (other output methods can be customized), strong anti-interference ability, easy long-distance signal transmission, no special requirements for signal transmission wires, linear relationship between output current and dust concentration, convenient for subsequent PLC data processing.

3. The integrated transmitter output 4-20mA current in the junction box is electrically isolated from the dust sensing probe to achieve safe signal transmission.

4. The product has an integrated structure, and the measuring electrodes are made of imported protective materials, which improves the ability to withstand high temperatures, corrosion, and adhesion, reduces cleaning and maintenance, extends the service life, and improves product quality.

5. The main body of the sensor is designed with airtight connectors to prevent the leakage of the measured gas and the outward impact and extrusion of the measuring electrode due to pressure, ensuring the safety of the transmitter and personnel.

3、 Working principle

The working principle of this dust detector is based on the principle of electrostatic induction. The detected dust particles move with the airflow inside the pipeline, and when the dust particles pass through the dust meter probe, they rub and collide with the probe, causing dynamic charge induction and generating charge signals. The dust analyzer will collect dynamic charge signals and obtain corresponding dust particle data through multi-stage operation amplification, filtering, and calculation processing. Continuously collecting dust particle data through a software system, and finally obtaining dust concentration through complex algorithm statistics.
The principle of electrostatic detection is widely applied and suitable for the detection environment of gas-solid two-phase flow. The collection process does not require manual intervention, is efficient and convenient, and has strong real-time data.

4、 Technical specifications

Operating environment temperature	-20 ℃~60 ℃ (electronic components)
Operating environment humidity	Non condensing 90%
Operating environment vibration	Maximum continuous oscillation, any direction, any frequency: root mean square value 2g (20m/s2)
Operating environment electromagnetic field	At 50 Hz, the highest value is 60 A/m (equivalent to a magnetic field of 50 AT in a 1 meter x 1 meter square electromagnetic coil)
Protection of operating environment	Protection level: IP66/NEMA4 aluminum alloy shell, suitable for installation in non corrosive environments, stainless steel probe
Pipeline gas pressure	-0.1-1MPa (up to 8MPa)
Pipeline gas flow rate	1m/s～30m/s
Pipeline gas temperature	Real time temperature: 200 ℃, instantaneous temperature: 260 ℃ (260 ℃ -800 ℃ can be customized)
outer diameter of pipe	0.1 meters to 4 meters
Probe structure	The standard probe is 16mm in diameter, with a length ranging from 100mm to 1000mm. The probe material is rare earth amorphous alloy,
Dust particle size range	The nominal range is 0.1 μ M to 200 μ M, and it can still receive signals outside the nominal range, but the signal characteristics are slightly different.
Powder material	Including: dust, coal powder, flour, dust, smoke, graphite, manganese dioxide, quicklime and other various particulate matter
zero drift	(Time) Less than 1% of the range per year.
zero drift	Within the specified temperature range, below 1% of the measuring range.
Full-scale drift	(Time) Less than 1% of range per year
Full-scale drift	Within the specified temperature range, below 1% of the measuring range.
Line stability	All components of the system are made of high stability electronic assemblies.
Noise resistance	All 50 or 60 Hz audio and harmonics are filtered out before the signal is received
measurement range	0-10mg/50mg/100mg/200mg/1000mg/30g/100g/m ³ (customized for special ranges)
Transmitter output mode	Standard 4-20mA (two-wire system) (customizable switch quantity, RS485 communication, Modbus RTU protocol, HART protocol, etc.)
Transmitter power supply	24V (available within the range of 15V to 32V)
measurement accuracy	±1%
Probe length selection	Please select the probe length according to the formula, i.e. D/3 ≤ L ≤ 2D/3 (Among them: D - Inner diameter of pipeline, L - Probe length)
Explosion-proof marking	Exia IIC T6 Ga/ExoD 21 T80 ℃ Certificate Number: CNV21.0092X Ex db IIC T6 Gb, Ex tb IIC T80 ℃ Db Certificate Number: CNV24.1117X

The above parameters meet the requirements of relevant national standards. Due to product upgrades or discrepancies between pictures and actual machines, please refer to the actual machine.

If your needs deviate from theirs, please call the national unified customer service hotline for detailed consultation. Thank you for your cooperation!