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 analyzers by FSUE "SPA "Analitpribor"-ГТМ-5101М-А - fixed gas analyzer for oxygen (atomic version)


Designed for measurement of oxygen volume fraction in process gas mixtures (nitrogen or air).

Application: process monitoring at NPP.

Gas analyzer type - fixed. 
Principle of operation - thermomagnetic.
Sampling - forced.
Version – atomic.

License for production of gas analysis equipment and auxiliary equipment for nuclear power stations ЦО-12-101-2358 of 07.07.2004.
License for design of gas analysis equipment and auxiliary equipment for nuclear power stations ЦО-12-101-2359 of 07.07.2004.
Gas analyzers belong to elements of normal operation controlling systems of (NOCS), class 3Н according to ПН АЭ Г-01-011-97.
All gas analyzers ГТМ-5101М-А and auxiliary equipment for them pass acceptance of the Federal Service for Ecological, Technological and Nuclear Supervision (Rostekhnadzor).


Basic technical characteristics




 О2 measuring ranges, vol. %

0-1; 0-2; 0-3; 0-5; 0-10;
0-21; 0-30

intrinsic fiducial error, %:
± 4

 Warm-up time, min, at most



 Readings setting, s, at most



 4 alarm thresholds within measuring range, %

5 - 90

set as agreed with the customer (default settings are 20, 40, 60, 80%
of measuring range)

 Output parameters:
      unified signal, mA
      digital signal
     “dry” relay contacts

0-5 or 4-20
RS 232
one group

  for each threshold
(0,1 – 1)А depending on voltage and load type

 Parameters of measured medium:



      temperature, °С

+5 ÷ +40


      pressure, kPa

84 ÷ 106,7


      moisture, g/m3, at most



      dust, g/m3, at most



      volume flow rate, l/min

0,7 ±0,2 


      SO2 content, mg/m3

up to 20


      NOX content, mg/m3

up to 1000


      Н2S content, g/m3

up to 0,01


      NH3 content, g/m3

up to 0,01


 Ambient temperature, °С

+5 ÷ +50  


 Supply voltage, V

~ 220 


 Consumed power, VA



 Overall dimensions, mm



 Weight, kg, at most



 Service life, years,  at least



Protection degree of gas analyzer enclosure - IР54. 

Variants of climatic versions:  ТМ3 (export).
In case parameters of gas mixture at gas analyzer inlet do not coincide with the ones given above, sample preparation unit БП-1-А or separate auxiliary devices (cooler ХК-3А (ИБЯЛ.065142.005), frigistor-А(ИБЯЛ.418316.016), safety valve ИБЯЛ.301122.044, fine adjustment valve ВТР (ИБЯЛ.306577.002-04)), that are supplied on separate order, can be used.  

Functional capabilities:
- digital indication of measured component content;
- 4 alarm thresholds;
- commutation of external circuits by one group of switching relay contacts upon alarm actuation;
- output of data on measured components concentration through current output of  0-5 or 4-20 mA (switchable) and via RS232.

Technical characteristics




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    Gas analyzers by FSUE "SPA "Analitpribor"-ГТМ-5101М-А - fixed gas analyzer for oxygen (atomic version)


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