Indiana Weights and Measures Begins Testing Of Compressed Natural Gas Public Stations

The Indiana Department of Health’s Weights and Measures Offices enforce laws and regulations about the labeling, weight, measure or count of pad items including food and household products. The office also regulates the accuracy of weighing and measuring devices in supermarket, gas stations, taxicabs, etc.

If you own or operate a compressed natural gas station, the state inspector will be contacting you to schedule your station for inspection.  The process can take several hours, depending on the number of dispensers at the station.

The following is a pictorial explanation of the process used to test each dispenser.

If you have questions about this process or wish to speak to the state inspector of CNG stations, contact


The CNG testing cylinder, built by CNG Source, is weighed empty, before being filled with CNG.

Lamar and Alan prepare to connect the CNG test cylinder to the fuel dispenser and fill.

Lamar connects nozzle to the CNG test cylinder and Alan activates the CNG dispenser.

Filling the CNG cylinder.

Alan takes another reading, of the tank full, to ensure a GGE of CNG is being dispensed.

Once the reading is confirmed, the dispenser is tagged and testing is complete for this year. The dispensed CNG is vented off the tank, and after temperature equalizes, is ready for the next test.

Special thank you to Indiana Weights and Measures and Kris Kyler, KAKCO CNG, for letting Greater Indiana take pictures during the testing process.