Laser Dust Meter has a built-in filter membrane on-line sampler, in the continuous monitoring of dust concentration at the same time, can be collected to the particulate matter, in order to analyze its composition, and to find out the quality of the concentration conversion factor K value. Direct reading of dust mass concentration (mg/m), with PM10, PM5, PM2.5, PM1 and TSP cutter for choice. The instrument adopts a powerful pump, making it more suitable for the detection of PM10 respirable particulate concentration in central air-conditioning exhausts that need to be equipped with longer sampling tubes, and the monitoring of PM2.5 respirable dust.
Laser dust meter instrument in line with industrial enterprise health standards (GBZ1-2002), workplace exposure limits of harmful factors (GBZ2-2002) standards, the Ministry of Health WS/T206-2001 "public **** places in the air respirable particulate matter (PM10) determination method - light scattering method" standard, the Ministry of Labor, LD98-1996 "air dust concentration of light scattering method of determination Concentration of Light Scattering Determination Method" standard and the Ministry of Railways TB/T2323-92 "Railway workplaces in the air dust determination of relative mass concentration and mass concentration of the conversion method" and other industry standards, and the Ministry of Health Health Health Law Supervision and Inspection of the issuance of the [2003] 225 document issued by the Ministry of Health, "the centralized air-conditioning ventilation system in the public *** place hygiene norms".
Main technical indicators
1, equipped with 40mm membrane online sampler;
2, with replaceable particle cutter PM10, PM5, PM2.5, PM1.0 and TSP for selection;
3, direct reading of dust mass concentration (mg/m3), 1 minute out of the results
4, large screen LCD display, Chinese menu prompts Display, Chinese character menu prompts;
5, Detection sensitivity: (L) 0.01mg/m; (H) 0.001mg/m.
6, Repeatability error: ± 2%
7, Measurement accuracy: ± 10%
8, Measurement range: (L) 0.01 ~ 100 mg/m; (H) 0.001 ~ 10 mg/m.
8, Measurement range: (L) 0.01 ~ 100 mg/m; (H) 0.001 ~ 10 mg/m.
9, Measurement of dust quality concentration (mg/m3), 1 minute results.
9, Measurement time: the standard time is 1 minute, with 0.1 minutes and manual gear (can be set arbitrarily sampling time).
10, with public **** place monitoring mode, atmospheric environment monitoring mode and labor health mode. Can calculate the time-weighted average (TWA) and short-time exposure concentration (STEL) and so on.
11. Storage: 999 sets of data can be stored cyclically.
12, timed sampling: can set the measurement time (1 ~ 9999) seconds, shutdown time (0 ~ 9999) seconds, warm-up time (0 ~ 10) seconds and the number of samples (1 ~ 9999) times.
13, dust concentration exceeds the alarm threshold setting: concentration of the maximum threshold: 65mg/m3; measurement time: (1 ~ 9999) seconds
14, the output interface:
(1) PC computer communication interface: RS232; optional RS485; optional wireless digital radio; optional GPRS communication
(2) miniature Printer output interface;
(3) analog output interface: 0-1V; optional 4-20mA
(4) digital output interface: level signal.
15. Power supply: Ni-MH rechargeable battery pack (1.2V x 4), can be used continuously for 8 hours; 220VAC/12VDC power adapter is attached.
16, another with humidity correction function, the data is more accurate
17, weight: 2.4kg. 195mm * 85mm * 132mm
18, the standard configuration: instruments, batteries, power adapters, leather bag, a small change the cone, the cutter five options, filter membrane, small plastic bags, manuals, certificates of compliance, warranty
19, optional: instrument-specific communication software, micro-printer, sampling rod (send domestic hose), cutter outside the standard.