Brief introduction

The RB-LGM Ringman Blackness Meter is an instrument that uses Ringman smoke concentration maps to measure the blackness level of smoke. It has a long measurement distance, high clarity, high accuracy, and a universal interface bracket for digital cameras. It can be connected to ordinary digital cameras or digital SLR cameras, take photos, and record the results.

The instrument is simple and convenient to use, and can be operated by general staff. It is suitable for environmental monitoring stations, power plants, steel mills, working condition enterprises, and third-party testing customers.

2、 Technical parameters

1. Implementation standard: "Determination of Blackness of Flue Gas Emissions from Fixed Pollution Sources - Ringman Smoke Blackness Chart Method" (HJ/T398-2007)

2. Telescope viewing angle magnification: 15x (customizable 10x or 20x)

3. Telescope observation distance: 10-2000 meters

4. Objective lens aperture: 80mm

5. Ringman Blackness Level: Six levels including 0, 1, 2, 3, 4, and 5

6. Observation error not greater than: 0.5 level

7. Dividing surface camera magnification: 2x

8. Dimensions: (600 × 110 × 110) mm

9. Equipped with a digital camera universal interface bracket, it can connect to ordinary digital cameras and digital SLR cameras, and record the results with the camera.

10. The configuration includes a host, front mirror, eyepiece, tripod, etc.

3、 Usage method

1. Select observation location

The location for observing smoke should be chosen in a dark area where there should be no condensed water vapor present.

2. Reading

When observing, compare the blackness of the smoke emitted from the chimney with the Ringman smoke blackness chart and record the Ringman series of the smoke. The blackness of smoke is between two Ringman levels, which can be estimated as a 0.5 or 0.25 Ringman level.

3. Observation time

The continuous observation of smoke blackness should be no less than 30 minutes, with 4 observations per minute. Observers should not keep staring at the smoke for observation, but should watch for a few seconds and then stop for a few seconds. Each observation (including viewing and interval time) is about 15 seconds,

4. Observation conditions

Observation should be conducted during the day; The observer's line of sight should be as perpendicular as possible to the direction of smoke movement; The viewing angle of the exhaust should be kept as low as possible, and overly steep angles should be avoided. Observing smoke should be done under relatively uniform sky lighting, such as in cloudy conditions. Due to the dark background of the sky, a slightly lower level should be taken based on experience when reading.

4、 Product standard configuration

1 host

Just like one mirror

1 eyepiece

1 triangular bracket

1 copy of instruction manual

1 certificate of conformity

1 warranty card

Camera is an optional accessory and can be purchased on behalf of customers according to their requirements