Laser Dust Meter / Laser Dust Detector / Laser Dust Tester
Laser dust meter description:
A new type of microcomputer laser dust analyzer with a built-in filter sampler at the international advanced level can collect particulates while continuously monitoring the dust concentration, so that its components can be analyzed and the mass concentration conversion factor K value can be obtained. Direct reading dust mass concentration (mg / m3), with PM10, PM5, PM2.5 and TSP cutters to choose from. The instrument uses a powerful suction pump, making it more suitable for the central air-conditioning exhaust port PM10 that requires a long sampling tube Detection of inhalable particulate matter concentration. The instrument conforms to the industrial enterprise hygienic standard (GBZ1-2002), the workplace exposure limit of harmful factors (GBZ2-2002) standard, the Ministry of Health WS / T206-2001 "Determination of inhalable particulate matter (PM10) in the air of public places-light scattering method 》 Standards, Ministry of Labor LD98-1996 “Light Scattering Method for Measuring Dust Concentration in Air†and Ministry of Railways TB / T2323-92 “Conversion Method for Measuring Relative Mass Concentration and Mass Concentration of Air Dust in Railway Workplaces†and other industry standards And the "Sanitary Code for Centralized Air Conditioning and Ventilation System in Public Places" promulgated and implemented by the Ministry of Health Wei Jianfa [2006] No. 58 document.
Main technical indicators of laser dust analyzer
Configure a 40mm filter membrane online sampler;
With replaceable particle cutters PM10, PM5, PM2.5 and TSP for selection;
Direct reading dust mass concentration (mg / m3);
Large screen LCD display, Chinese character menu prompt;
Detection sensitivity: low sensitivity 0.01mg / m3; high sensitivity 0.001mg / m3;
It has public place monitoring mode, atmospheric environment monitoring mode and labor hygiene mode. Can calculate the time-weighted average (TWA) and short-term exposure allowable concentration (STEL), etc .;
Storage: General measurement, 99 sets of data can be stored cyclically. Continuous monitoring, maximum storage of 9999 concentration values-read by PC;
Timed sampling: set measurement time (1 ～ 9999) seconds, shutdown time (0 ～ 9999) seconds, warm-up time (0 ～ 10) seconds and sampling times (1 ～ 9999) times
Alarm threshold setting for dust concentration exceeding standard: maximum concentration threshold: 65mg / m3; measurement time: (1 ～ 9999) seconds;
Output Interface:
Main technical features of laser dust analyzer
Designed a replaceable particle cutter, and realized the compatibility of PM10, PM5, PM2.5, TSP and various particle separation cutters
An online filter membrane sampler is designed to achieve continuous monitoring of dust concentration compatible with filter membrane sampling. It can analyze the composition of the collected particulate matter and find the mass concentration conversion factor K value of the place.
Using laser light source, the mass concentration conversion factor is not affected by the color of the particulate matter.
A large-screen LCD Chinese character display is adopted to realize the Chinese character menu prompt.
A constant current controller is designed to ensure that the sampling flow rate is constant and the cutting curve is correct.
With built-in optical standard loose plate to ensure high stability of the instrument.
With a special protective air curtain, it avoids the pollution of the core component of the instrument-the optical system by dust, ensuring high reliability of the instrument.
The automatic adjustment of the zero point of the instrument is realized through computer software, which improves the measurement accuracy of the instrument and is convenient for users.
The instrument is designed with a timing sampling mechanism, which can sample at a set time, start and stop at a fixed time. The data obtained can be recorded by a micro printer or imported into a PC for data processing, making the instrument suitable for continuous monitoring of inhalable particulate matter in the atmospheric environment.
The instrument can set an alarm threshold for dust concentration exceeding the standard. When the dust exceeds the standard, it can automatically sound and light alarm, or transmit the signal to the control center for monitoring.
The instrument has designed an analog output interface. When evaluating the air purifier, the purification efficiency evaluation curve can be drawn.
In addition to the general measurement mode suitable for indoor dust monitoring and the regular sampling mode suitable for atmospheric environment monitoring, a new labor hygiene mode has been added. Under this mode, according to the industrial enterprise hygiene standards (GBZ1-2002) and workplace hazards Factor exposure limit standard (GBZ2-2002), calculated time-weighted average (TWA) and short-term exposure allowable concentration (STEL).
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