Explosion proof spark detector, dust removal monitoring system

Explosion proof spark detector, dust removal monitoring system

Differential pressure alarm: The differential pressure alarm device of the dust removal box is used to monitor the pressure difference generated at the inlet and outlet of the dust removal box. It can effectively avoid the blockage of the bag inside the dust removal box. If the pressure difference is too high, it is necessary to clean the bag inside the dust removal box in a timely manner to prevent the occurrence of a fire.

Taking the bag filter as an example: the larger the pressure difference of the bag filter, the greater the resistance. The greater the resistance, the greater the output of the fan and the energy consumption. Prolonged high air output can lead to fan failure. But the key is that the larger the pressure difference, the stronger the filter bag sticking in the dust collector. If the bags are stuck in a small area, it is still stronger. If the bags are stuck in a large area and the induced draft fan is outputting at that high peak, it is easy to deflate the dust collector over time, and it will also seriously affect the load of the boiler. Suggest investigating the reasons for the increase in pressure difference to avoid MFT of the unit. Check if there is a problem with the dust cleaning system of the bag filter and if the bag is stuck.

Technical specifications for pressure difference alarm device: Measurement medium: dry, clean, and non corrosive gas; Pressure forms: gauge pressure, differential pressure; Adopting differential pressure core imported from the United States, with high precision and good stability, it has zero point, full range compensation, and temperature compensation; Range: 0- ± 100pa/0- ± 10000pa; (Range can be customized according to industry requirements, ± 1000 pa). ± 10 Pa, 0-5000 Pa, etc. can be customized) Input voltage: 220VAC (16~36VDC needs customization); Accuracy: ± 0.5% FS/1.0% (standard type), ± 0.25% FS type); Long term stability performance: 0.1% FS/year; Output signal: 1-channel switch quantity (standard configuration includes 1-channel sound and light alarm+1-channel power indicator/switch), optional 4-20mA, 0-5V, 0-10V output or RS485 communication interface; LED dual row 4-digit display, capable of displaying measured values, peak values, alarm set values, and one click addition and subtraction of alarm values; Manual key pressure differential zero calibration; Overload capacity: 200% FS · ABS industrial plastic shell, IP65 protection level; Compensation temperature: -10-70 ℃ Environmental temperature: Normal temperature (-10-70 ℃)

Differential pressure alarm: The pulse dust removal differential pressure alarm device usually has two pressure ends, divided into a high pressure end (H) and a low pressure end (L). Differential pressure transmitter measures the pressure difference between the high and low pressure ends. So how to determine the differential pressure range? Firstly, the system pressure during normal operation of the tested system should be considered, which can also be referred to as unilateral pressure. Next, it is necessary to determine the value of the pressure difference between the measured end and the reference end, that is, the range of the differential pressure transmitter. If the high-pressure end pressure of the tested device must be higher than the low-pressure end, a single range can be selected, such as 0-10Kpa, 0-10Kpa; If you cannot determine the high voltage end, you can choose+-1KPa or+-10Kpa, so that both ends can be connected freely and testing is more convenient. (Differential pressure range can be customized according to the industry)

Example 1: Check if the performance of the filter meets the standards. When the inlet pressure of the filter is 300KPa and the outlet pressure of the filter is less than 280KPa, the filter needs to be replaced. So, when selecting a differential pressure transmitter, you can choose based on the parameters of a system pressure of 300KPa and a differential pressure range of 20Kpa.

Example 2: Check the consistency of pressure inside two high-pressure tanks. The standard pressure inside the tank is 1 megapascal, and both tanks are inflated simultaneously to ensure that the pressure difference between the two tanks is less than 1 kilopascal. Then we can select the range of the differential pressure transmitter based on the parameters of system pressure of 1 megapascal and differential pressure+-1 kilopascal.

The differential pressure sensor is easy to use. Suitable for measuring pressure or differential pressure of various dry and non corrosive gases, with high measurement accuracy. After precise temperature calibration, amplification and external processing, it is converted into a 4-20mA standard signal and interfaces with industrial computers or distributed systems. It is very simple, with M4 screw mounting holes on both sides of the body and threads on the air nozzle. Users can choose to fix it with screws or M10 * 1.5 nuts. The default pressure interface is a φ 8 pagoda shaped nozzle, where the long nozzle is the pressure interface and the short nozzle is the low-end pressure interface. Special display function is added to achieve on-site display and synchronous display of the upper position, which is convenient for on-site personnel to watch and debug. Linear circuit and temperature compensation technology; Make the transmitter perform better. Compact and sturdy structure; Small size and light weight; Easy installation; Easy to use. Suitable for measuring pressure or differential pressure of various dry and non corrosive gases, with high measurement accuracy. Through precise temperature calibration, amplification and external processing, it is converted into a 4-20mA standard signal and interfaces with industrial computers or distributed systems. It is widely used for measuring air duct pressure or flow in petroleum, chemical, metallurgy, and power plants, achieving automatic measurement and control of production processes.

Differential pressure alarms are suitable for multiple industries, especially feed mills and biotechnology companies that require the installation of explosion-proof differential pressure alarms. Generally, wood mills, textile factories, etc. require the installation of ordinary differential pressure alarms. With increasingly strict inspections by security departments, differential pressure alarms are also one of the necessary safety products for enterprises. Our company accepts customized ordinary differential pressure alarms and explosion-proof differential pressure alarms.

Explosion proof spark detector, dust removal monitoring system