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Interpretation of dust particle counter operation key points

日期:2020-07-06 17:02
浏览次数:68
摘要:Dust particle counter is testing the air dust particles distributed particle size and its special equipment, carried out by a microscope, the microscope, settling tube, dust particle counter experience settlement instrument, centrifugal settling, particle counter, laser particle counter, PCS nm laser airborne particle counter process, meanwhile because of air dust particle counter laser detection speed, dynamic spread wide and is not affected by human aspects of advantage, as many professional m
Dust particle counter is testing the air dust particles distributed particle size and its special equipment, carried out by a microscope, the microscope, settling tube, dust particle counter experience settlement instrument, centrifugal settling, particle counter, laser particle counter, PCS nm laser airborne particle counter process, meanwhile because of air dust particle counter laser detection speed, dynamic spread wide and is not affected by human aspects of advantage, as many professional main equipment for many years.

Dust particle counter operation process:

The dust particle counter provides an isodynamic sampling probe connected to the sampling port through the teflon sampling tube. The isodynamic sampling probe helps to reduce the counting error of small particle sampling and should be used in each measurement. When sampling typical indoor and outdoor aerosol particles, the uniform sampling head should always be upward. The instrument can be held in the hand or placed on a flat surface or tripod with the LCD screen facing the operator.

Where the sampling flow is constant, such as in the clean room, air duct, downstream of the filter, etc., the flow direction is always aligned with the opening of the uniform sampling head.

The hose connecting the equal-speed sampling head and sampling port can be extended if necessary. However, the longer length will increase the burden of the sampling pump, reduce the airflow velocity and cause premature failure of the sampling pump. It can also cause counting losses, especially for large particles. It is recommended to shorten the length of the hose as much as possible, not more than 3 meters.

The sampling height also affects the reading, and readings near the floor may be several times the line of sight.



Note for dust particle counter operation

1. Do not start the counter when the inlet pipe is covered or blocked

2. The laser dust particle counter should be used in a clean environment to avoid damage to the laser sensor

3. Do not test for a mixture of gases (such as hydrogen and oxygen) that may react. The gas may also explode inside the counter. To test these gases, contact the manufacturer for more information.

4. Do not sample compressed air without high-pressure pressure relief equipment (such as high-pressure diffuser). All particle counter meters are designed to operate at one atmosphere.

5. Water, solution or other liquid shall not enter the sensor through the inlet pipe.

6. When analyzing pollution problems with a dust particle counter, it is important to note that all pollution is continuous and that some is the result of a transient event or a burst of particles. Multiple sampling in the same place is required to determine the source of the contamination.

7, sampling, free from sampling from the counter itself out of the gas or the counter out of the gas pollution.

8. When connecting external printer or external temperature and humidity sensor, turn off the counter first; When performing the printing operation, the printer must have printing paper, otherwise it will damage the print head.

9, the laser dust particle counter is primarily used to test the purification workshop clean environment, when there are local lax particles raw materials, dust source, spray, must adhere to at least 12 inches away from the inlet pipe. Avoid the above particles and liquid pollution sensor and pipeline.

The monitoring system of the dust particle counter integrates the detection functions of particle count, plankton sampling, temperature and humidity, micro-pressure difference and wind speed, and collects various parameters in the monitored environment accurately through the automatic control of the system. And allow after all the use of its own production requirements to set the alarm system constraints, dust particle counter to complete the overruns of environmental parameters real-time online monitoring. In order to reach the user's normal production environmental objectives of clean requirements.