This free app gives you the ability to gas rate appliances using a metric or imperial meter. You have the option to choose from Natural, Propane or Butane gasses.
The app has an integrated timer .
CV of the natural gas is set at 39.0
The full version of the gas rating app includes:
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The ability to gas rate when using either Metric or imperial meters
Tightness testing timing
Comprehensive guide for the use of the app itself
Full comprehensive guides for tightness testing of LPG and Natural gas systems to IGEM UP 1B Edition 3
On screen instructions while tightness testing
Shortley there is also going to be a page for purging calculations