BottleCheck

Usage:

1. To pair your BottleCheck sensor to the phone, simply press the "Sync" button on the back of the sensor while the app's main screen is visible. The first time you use your BottleCheck sensor you must press the "Sync" button 5 times in a row in order to wake up the sensor.

2. Place the BottleCheck sensor in the center of the underside of the tank. Most tanks have a small "flat" spot on the center and this is the nominal location for the sensor.

3. Flip the tank over. Once the fluid has settled the app will display a reading. Note that the LPG fluid will be sloshing around in the tank for a few minutes and the quality of the measurements will be low until this has stabilized.