Logo VSL Dutch Metrology Institute

Explosimetry

The listed PRMs are typical examples of standard gas mixtures used in the calibration of explosive concentration monitors. The compositions listed are all on 50 % L.E.L. level. Other compositions, including other components are available on request.

 

Methane in synthetic air

PRM code

Certified component

 

Nominal fraction range (mol/mol)

 

Stability period

 

EX-1

CH4

2,2 · 10-2

24 months

Propane in synthetic air

PRM code

Certified component

 

Nominal fraction range (mol/mol)

 

Stability period

 

EX-2

C3H8

0,9 · 10-2

24 months

Hydrogen in synthetic air

PRM code

Certified component

 

Nominal fraction range (mol/mol)

 

Stability period

 

EX-3

H2

2,0 · 10-2

24 months


Cylinder pressure 11,5 MPa, Cylinder valve outlet DIN 477 no. 1, Approximate deliverable volume 0,6 m3.