analyzersOptical dust counter (conimeter) SOM-16
The purpose
Dust counter SOM-16 is meant for measuring mass concentration of dust and optical density in the flue gases of fuel-burning plants operated on any type of fuel.
Advantages
The device is supplied with a blower for removing dust from lenses.
The work of electric filters does not affect the precision of measurements.
Current outputs set from the control and measurement ranges
The working principle
The work of the device is based on measuring the losses of optical power of LED radiation passing through a gas duct. The power losses are caused by absorption and dissipation of light by solid matter particles and depend on dust concentration.
The dust counter SOM-16 has two modifications: SOM-16.D and SOM-16.M
|
Parameter |
SOM-16.D |
SOM-16.M |
|
Ambient temperature |
from 100 to 250 °C |
from 0 to 800 С |
|
Gas duct diameter |
from 1 to 4 m |
from 0.5 to 20 m |
|
Application |
Steel gas ducts with changeable geometry in operation |
Rigid reinforced gas ducts/pipes |
|
Adjustment |
In factory |
On site |
| Configuration of SOM-16.D | Configuration of SOM-16.M | ||
 |
1 – Measuring module 2 – Control module 3 – Air pump with an air filter 4 – Installation frame (optional) |
 |
1,3 – Measurement box (lighter, light receiver) 2 – Control module 4 – Air pump with air filter 5 – Installation frame (optional) |
Metrological characteristics SOM-16M
|
Range of measured dust concentrations |
Limits of maximum permissible error |
|
|
Absolute error |
Relative error, % |
|
|
from 0 to 20 mg/m3 |
± 4 mg/m3 |
- |
|
from 20 to 10 000 mg/m3 |
- |
± 20 |
|
from 10 to 100 g/m3 |
Not rated |
|
|
Range of measured optical density |
||
|
from 0 to 0.7 |
± 0.014 |
- |
|
from 0.7 to 3 |
- |
± 2 |
|
from 3 to 4 |
- |
± 5 |
Technical characteristics
|
Characteristic |
Value |
|
Direct current output, mA (to be chosen by the user) |
0 - 20 / 4 – 20 / 0 – 5 |
|
Output, bit-serial interface |
RS-485 |
|
Alternating current voltage, V |
187 – 230 |
|
Power input without air pump module, W, max |
50 |
|
Power input of air pump module, W, max |
700 |
|
Weight, kg, max Measuring probe (SOM-16. D – 1piece) Measuring sensors (SОМ-16. M – 2 pieces) Control module Air pump module |
13 10 20 21 |
|
Dimensions (diameter/length, height, width), mm, max Sensor Measuring module Air pump module |
120;150;120 380; 600;210 350; 550; 320 |
|
Pipe diameter for installing the instrument, m |
from 0.5 to 20 |
|
Availability of straight portions of the pipe before and after measurement |
Not required |
|
Range of operating ambient temperature, оС |
from minus °60 to plus °50* |
|
Analyzed ambient temperature, max (SОМ-16.M), оС |
800 |
|
Analyzed ambient temperature, max (SОМ-16.D), оС |
250 |
|
Relative humidity of ambient air for measuring module, without condensation, %, max |
99 |
|
Average service life, years |
10 |
|
Average time between failures, h |
65000 |
*Ensured by placing the instrument in a heated box.