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.
ГТВ-1101М-А - fixed gas analyzer for hydrogen (atomic version)

Designed for continuous automatic measurement of hydrogen volume fraction in nitrogen (air) or nitrogen in helium.

Application: process monitoring at nuclear power plants.

Gas analyzer type - fixed. 
Sampling – forced.    
Principle of operation - thermoconductometric.
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 ГТВ-1101М-А and auxiliary equipment for them pass acceptance of the Federal Service for Ecological, Technological and Nuclear Supervision (Rostekhnadzor).


Basic technical characteristics




Measuring ranges, vol. %:
for  Н2

  0-1; 0-2; 0-3; 0-5;
  0-10; 0-20; 0-30; 90-100

0-1; 0-2; 0-3


analyzable medium:



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 output signal, mA
      digital signal
     “dry” relay contacts

0-5 or 4-20
one group

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

Parameters of measured medium:
      temperature, °С
      pressure, kPa
      moisture, g/m3, at most
      dust, g/m3, at most
      volume flow rate, l/min

+5 ÷ +50
84 - 106,7
0,7 ± 0,2  


Ambient temperature, °С

  +5 - +50  


Supply voltage, V

~ 220 


Consumed power, VA, at most



Overall dimensions, mm


weight, 10 kg at most

Protection degree of gas analyzer enclosure - IР54. 
Variants of climatic versions: ТМ3, ТМ3 (export), УХЛ4.
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.

Technical characteristics



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    ГТВ-1101М-А - fixed gas analyzer for hydrogen (atomic version)


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