[Digestion] Biogas meter

[fwitarsa at umd.edu]

Hi there, 

My name is Freddy Witarsa and I am a student at University of Maryland in the 
US. We are currently building biodigesters and I am designing the gas collection 
system. I have a question regarding the biogas meters that could be used for 
measuring the amount of biogas produced. Currently, we have a chinese model 
meter JBD2.5-SA. We are hesitant to use it because it is not temperature and 
pressure compensated. Does anyone have any good suggestions for low-flow 
gas meter that is pressure and temperature compensated?

Also, diaphragm meters seems to be ideal for low-flow gas measurement, but I 
believe it is not ideal for biogas because of the biogas moisture content, which 
could lead to corrosion of the meter. Does anyone know of diaphragm meters 
that are built specially for biogas (i.e. with stainless steel etc.)? 

Thank you very much for your help. 

Freddy Witarsa