Hall sensor possibility for Gas Measurment?

The Loop Energy Saver firm have a sensor for Gas, has anyone seen it and can one be sourced to be added to the EmonPi ?

I’m not into electronics so even using a raspberry pi will be a tough learning curve but the need to monitor my gas as well as electric is a great incentive.

I agree with the above comments that my gas consumption is far above my electric.

The last comment was in Jan so hoping for some positive answers

Regards
Mike