Hi
Does any body have the following standards:
1. DIN 1871
Gaseous fuels and other gases - Density and other volumetric quantities
2. DIN 51857 Calculation of superior and inferior calorific value, density and Wobbe index of gaseous fuels and other gases
3. DIN 51612:1980 Testing of liquefied petroleum gases – calculation of net calorific value
4. ΕΝ 14236:2007 Ultrasonic domestic gas meters
Thanks
Shabbir



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