FSUE “SPA “Analitpribor” is one of the leaders of gas-analysis instrument engineering in the Russian Federation. Production of gas-analysis equipment is from 1960.

Gas analyzer ДАК (infrared gas analyzers)

 
 

Gas analyzers ДАК are designed for continuous, automatic measurement of pre-explosive concentrations of methane (СН4), hydrocarbons including vapors of oil and oil products, associated petroleum gas, alcohols and also volume fraction of carbon dioxide (СО2).

Application:  
01. Monitoring of air of working areas of premises and open spaces of explosive and fire-hazardous chemical, petrochemical and oil-refining productions;
02. Operation as a part of atmosphere monitoring system of hazardous industrial objects.


Type of gas analyzer – fixed.
Principle of measurement – optical absorbing.
Sampling – by diffusion.
Material of enclosure  - aluminium / stainless steel.

 

Basic technical characteristics

Designation

Measurement unit

Calibration component

Measuring range on calibration component

Type of output signal

Operating temperature

ДАК-СО2-026

volume fraction, %

carbon dioxide

0 – 4*
0 – 10*
0 – 20*

4-20 mА 
relay (250V; 1,0А)
RS485

from -40 to +80

ДАК-СН4-027

% LEL

methane

0 – 100

4-20 mА
 relay (250V; 1,0А)
RS485

from -40 to +80

ДАК-СН4-029

% LEL

methane

0 – 100

4-20 mА
 relay (250V; 1,0А)
RS485

from -60 до  +60

ДАК-ΣСН-030

% LEL

propane

0 – 100

4-20 mА
 relay (250V; 1,0А)
RS485

from -60 to +60

ДАК-СО2-031

volume fraction, %

carbon dioxide

0 – 4*
0 – 10*
0 – 20*

4-20 mА
RS485

from -40 to +80

ДАК-СН4-032

% LEL

methane

0 – 100

4-20 mА
RS485

from -40 to +80

ДАК-ΣСН-033

% LEL

propane

0 – 100

4-20 mА
RS485

from -40 to +60

ДАК-СО2-035

volume fraction, %

carbon dioxide

0 – 4*
0 – 10*
0 – 20*

4-20 mА
 relay (250V; 1,0А)
RS485, HART

from -40 to +80

ДАК-СН4-036

% LEL

methane

0 – 100

4-20 mА
 relay (250V; 1,0А)
RS485, HART

from -40 to +80

ДАК-СН4-037

% LEL

methane

0 – 100

4-20 mА
 relay (250V; 1,0А)
RS485, HART

from -60 to +90

ДАК-ΣСН-038

% LEL

propane

0 – 100

4-20 mА
 relay (250V; 1,0А)
RS485, HART

from -60 to +60

* Measuring range of gas analyzers ДАК-СО2 is determined when order is made.

Measured components:

01. ДАК-СН4                СН4; С6Н6; С7Н8;  СН3-С(О)-СН3; С2Н4; diesel fuel according to ГОСТ 305-82; 
                                  natural gas according to ГОСТ 5542-87;
02. ДАК-ΣCH                С3H8; C2H6; C4H10;  C5H12; C6H14; C8H18; СН3ОН; С2Н5ОН; 
                                  white spirit according to ГОСТ 3134-78; jet fuel according to
                                   ГОСТ 10227-86; liquefied gas according to ГОСТ 20448‑90; 
                                  automobile petrol according to ТР ТС 013/2011; aviation petrol according to ГОСТ 1012-72; 
                                  unleaded petrol according to ГОСТ Р 51866-2002; kerosene; oil according to ГОСТ Р 51858-2002.

 

Additional technical characteristics

Characteristics

Values

Remarks

Explosion protection marking

1Exd[ib]IIСT4 X/ 1Exd[ib]IIBT4 X

1ExdIIBT4

ДАК-31 …-33

ДАК-26, -27, -29, -30, -34 …-38

Degree of enclosure protection

IP 66

 

Power consumed, W, not more

3,5

ДАК-37 - 6,0

Limits of intrinsic error

±(2,5+0,05·Свх)

for ДАК ΣСН, СН4

Readings setting time Т0,9, s

10

 

Interval between verifications, months

24

 

Overall dimensions (LхWхH), mm

200х130х300

weight 4,0 kg

Distinctive features

01. Wide temperature range (from -60 to +90оС);
02. Application in the conditions of the Extreme North;
03. Availability of analog, relay and digital, HART outputs;
04. Monitoring of vapors of oil products (petrol, kerosene, diesel fuel etc.);
05. Constant diagnostics of sensor, monitoring of optics contamination;
06. Heating of measuring element, using of filter for dust and moisture protection;
07. Setting of sensors of own production into gas analyzers.

Secondary power supply and alarm units БПС-21М are used for power of gas analyzers ДАК.

Gas analyzers ДАК are supplied with the set of cable gland (for armored cable, metal hose, tubing) on special order. 

 

Technical characteristics
Certificates

      

 

 

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