analyzersElectrochemical gas analyzer PEM-4MS
Purpose
Gas analyzer PEM-4MS is meant for measuring the concentration of oxygen (O2), carbon dioxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO2), and sulfur dioxide (SO2) in the combustion gases of fuel-burning plants for all kinds of fuel. The application of the gas analyzer is technological and environmental control of the flue gases composition.
Advantages
- Automated zero calibration;
- Extended time of the sample pumping system’s work;
- Convenient configuration for diagnostics and maintenance;
- Changeable factory-calibrated sensors;
- Current inputs for plugging in additional devices (optional).
The working principle
The gas analyzer consists of a measuring module, a sampling probe and a sample supply line.
The principle of the gas analyzer’s work is the work of a set of electrochemical measuring sensors.
The working mode is cyclic.
The method of probing a sample is forced, with a built-in flow booster.
Optionally, the device may have a heavy-duty system of sampling system.
Configuration
 |
1 – Sampling probe 2 - PEM-4MC gas analyzer- measuring module 3 – Sample supply line |
Metrological characteristics
|
The component to be identified |
Measuring range |
Maximum permissible error |
|
|
Absolute |
Relative |
||
|
O2 |
from 0 to 5 % vol.fraction over 5 to 21 % vol. fraction. |
± 0.12 % vol. fraction ─ |
─ ± 2.5 % |
|
CO |
from 0 to 200 million -1 over 200 to 4000 million -1 |
± 8 million-1 ─ |
─ ± 4 % |
|
SO2 |
from 0 to 200 million -1 over 200 to 2000 million -1 |
± 12 million -1 ─ |
─ ± 6 % |
|
NO |
from 0 to 200 million -1 over 200 to 1000 million -1 |
± 16 million -1 ─ |
─ ± 8 % |
|
NO2 |
from 0 to 100 million -1 |
± 10 million -1 |
─ |
|
Temperature of channel 2* |
from 0 to 40 оС over 40 to 600 оС over 600 to 800 оС |
± 2о С - Not rated |
- ± 5 % Not rated |
Technical characteristics
|
Characteristic |
Value |
|
Direct current output, mA (to be chosen by the user) |
0 - 20 / 4 – 20 / 0 – 5 |
|
Output, bit-serial interface |
RS485 |
|
Maximum time for showing indications T90 in measurement channels, sec, max |
120 |
|
Heating time for PEM-4MC gas analyzer, min., max |
10 |
|
Measuring cycle, min |
5-10 |
|
Voltage for alternating current, V |
187 – 230 |
|
Power output without electricity consumption by heated sample transportation line, W, max |
700 |
|
Weight, kg, max Measuring probe Measuring module |
3 40 |
|
Dimensions (diameter/length, height, width), mm, max Sampling probe Measuring module |
--;--;1000 600; 250;800 |
|
Pipe diameter for installing the instrument, m |
from 0.5 to 20 |
|
Range of operating ambient temperature, оС |
from minus о50 to plus о50* |
|
Analyzed ambient temperature, max, оС |
800 |
|
Relative ambient humidity for measurement 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