TLD-5H/LThe Type Laser Dust Analyzer is a fast dust analyzer that uses light scattering from a laser micro light source. Directly read the mass concentration of particulate matter,1Output results in minutes, or set sampling time according to user needs; Built in filter membrane sampling device, continuously monitoring dust concentration while,Can collect particulate matter,In order to analyze its components and calculate the conversion coefficient of mass concentrationKValue. The built-in filtering device avoids the influence of dust on instrument components and extends the service life of the instrument; Having a self-learning system; Equipped with air curtain shielding and self-cleaning function for clean gas, ensuring that the optical system is not contaminated; Implemented software automatic zeroing; It has bidirectional communication function with computers and can be accessed throughPCMachine for data processing, printing curves and tables.

The instrument has multiple functions such as continuous monitoring of particulate matter concentration, timed sampling, and alarm for excessive dust concentration. ProvidedPM10、PM5、PM2.5、PM1.0reachTSPCutting tools available for selection.The instrument adopts a powerful suction pump, making it more suitable for central air conditioning exhaust outlets that require longer sampling tubesPM10Detection of inhalable particulate matter concentration and detection of inhalable dustPM2.5Conduct monitoring.LD-5H/LThe laser dust analyzer has obtained the license for manufacturing measuring instruments and the type approval certificate for measuring instruments in the People's Republic of China

By shining a laser beam onto a dusty airflow, the beam produces scattered light. The higher the dust concentration, the greater the intensity of the scattered light produced, thereby measuring the dust concentration. The light scattering method is used to determine the concentration of inhalable particulate matter in the air of public places, which has the advantages of speed, sensitivity, good stability, small size, light weight, no noise, easy operation, safety and reliability. On the one hand, this method has high sensitivity and requires less sample size, and can eliminate or simplify sample processing steps, thus greatly reducing sampling and analysis time; On the other hand, this method does not require sample storage, thus avoiding or reducing various possible error factors in the analysis method

1. Designed a replaceable particle cutter and achievedPM10、PM5、PM2. 5、PM1.0、TSPMultiple particle separation cutters are compatible.
2. Designed an online filter membrane sampler that is compatible with continuous monitoring of dust concentration and filter membrane sampling. It can analyze the composition of collected particles and calculate the mass concentration conversion coefficient of the siteKValue.
3. Using a laser light source, the conversion coefficient of mass concentration is not affected by the color of particles.
4. Adopting a large screen LCD display of Chinese characters, Chinese character menu prompts have been implemented.
5. Designed a constant current controller, Ensure a constant sampling flow rate and correct cutting curve.
6. Equipped with built-in optical standard scatter board,Ensure high stability of the instrument.
7. Equipped with a special protective air curtain, it avoids dust pollution to the core component of the instrument - the optical system, ensuring high reliability of the instrument .
8. The automatic zero adjustment of the instrument is achieved through computer software, which improves the measurement accuracy of the instrument and facilitates user use.
9. The instrument is designed with a timed sampling mechanism, which can perform timed sampling, start and stop according to the set time. The obtained data can be obtained through Micro printer records or importsPCThe machine processes data to make the instrument suitable for continuous monitoring of inhalable particulate matter in the atmospheric environment.
10. The instrument can set an alarm threshold for excessive dust concentration, and automatically sound and light an alarm when the dust exceeds the standard, or transmit the signal to the control center for monitoring.
11. The instrument is designed with an analog output interface, which can draw a purification efficiency evaluation curve when evaluating the air purifier.
12. In addition to the general measurement mode suitable for dust monitoring in indoor public places and the timed sampling mode suitable for atmospheric environment monitoring, a new labor hygiene mode has been added. In this mode, according to the hygiene standards of industrial enterprises（GBZ1-2002）Exposure limit standards for harmful factors in the workplace（GBZ2-2002）Calculate the time weighted average（TWA）And the allowable concentration for short-term exposure（STEL）.

1Configuration40mmFilter membrane online sampler;

2Equipped with replaceable particle cuttersPM10、PM5、PM2.5、PM1.0reachTSPalternative;

3Direct reading of dust quality concentration（mg/m³）, oneResults in minutes;

4Large screen LCD display,Chinese character menu prompt;

5Detection sensitivity:LD-5L 0.01mg/m³；LD-5H 0.001mg/m³。

6Repetitive error: ±2％

7Measurement accuracy: ±10%

8Measurement range:LD-5L 0.01～100 mg/m³；LD-5H 0.001～10 mg/m³。

9Measurement time: The standard time is1Minutes, with0.1Split and manual mode (sampling time can be set arbitrarily).

10It has public place monitoring mode, atmospheric environment monitoring mode, and labor hygiene mode. Can calculate the time weighted average（TWA）Allowable concentration for short-term contact（STEL）Wait.

11Storage: Recyclable storage99Group data.

12Timed sampling: measurement time can be set（1～9999）Second, shutdown time（0～9999）Seconds, preheating time（0～10）Seconds and Sampling Times（1～9999）Next time.

13The dust concentration exceeds the standard alarm function, and the alarm concentration threshold can be set by oneself; Measurement time（1～9999）Seconds can be set by oneself.

14Output interface:

（1）PCSerial interface for machine communication:RS232；

（2）Micro printer output interface;

（3）Analog output interface:0—1V；

（4)Digital output interface: level signal.

15Power supply:Ni-MHOr lithium rechargeable battery pack（1.2V x 4）, can be used continuously8Hour; attach220VAC/12VDCThe power adapter.

16Equipped with humidity correction function, the data is more accurate (see details)LD-5S)

17Can be equipped with a smoke sampling rod, tripod, and micro printer.

18Weight:2.4kg.195mm*85mm*132mm