1 Overview

This section describes the installation, operation, inspection and maintenance of the MS-OPAC100 type smoke meter.

MS-OPAC100 is based on the principle of back scattering of smoke particles, which can be used for on-line continuous measurement of particle pollution.

Be careful：

MS-OPAC100 uses a 15MW, 650nm semiconductor laser, laser beam and reflected light directly into the eye will cause serious damage.

MS-OPAC100 is not installed in the chimney / road, do not power up operation.

When MS-OPAC100 is running, do not enter the chimney / road.

Laser beam and its reflected light

In the absence of appropriate training, shall not exceed the scope of the manual operation.

2 scope of application

MS-OPAC100 type dust measuring instrument can be used for particle concentration real-time continuous measurement of various pollution sources, supporting the flue gas monitoring system, can also be a separate one or several connected into a dust monitoring network, a common front. The instrument can be used in the power plant, steel plant, cement plant, etc., can also be used for dust removal equipment and other powder engineering process control

3 technical features

The principle of laser back scattering, the mechanical vibration of the flue gas and the temperature of the flue gas temperature caused by the refractive index of the beam

Single end installation, no centering

Standard 0-20/4-20mA industrial standard current output, easy connection

Instrument overall power consumption is very small, about 5W

In the special requirements of the measurement area size can be customized

Automatic zero and full scale

4 technical indicators

Size and weight

Optical head 180 x 180 x 200mm 2.5Kg

Air chamber 100 x 180 x 180mm 2Kg

Environmental requirements

Temperature: -40 DEG C ~60 C

Relative humidity: 0-100% R. H.

Measurement error: + 2%

Medium condition

The highest temperature of 300 degrees (high temperature to be customized)

Signal output 4-20mA

Maximum output load 500

Sensitivity: 2mg/m3

measuring range

Minimum 0-200mg/m3

Max 0-10g/m3

Chimney size can be measured 1-15m

Power DC 16-24V 10 W

5 system principle and structure

The system consists of an optical part, a circuit part, a calibrator and a wind chamber

The schematic of the system is shown in Figure 1

Figure 1 system schematic

The optical part comprises a laser light source, a power control, a photoelectric sensor and a scattering light receiving part. The laser light source and power control to ensure the stability of the light source, the 670nm beam generated by the laser at a slight angle into the emission source, the laser beam and the effect of light scattering of smoke particles, backscattered light into the system by receiving sensor change into electrical signal processing.

The size of the measurement area is determined by the lens parameters and the sensor size

Circuit part of the photoelectric conversion, laser beam modulation, signal amplification, demodulation, power control, V/I conversion function.

The calibration device is used to produce a stable optical signal to calibrate the zero and span of the instrument

The air chamber is a cavity which is provided with an interface connected with a clean air source, which is used for protecting the equipment from being polluted by the smoke