Battery Acid Reservoir Level Measurement

When a North American battery manufacturer needed reliable level measurement of their sulfuric acid reservoirs, they turned to Flowline.

Lead acid car batteries are basically a positive and negative plate, separated by porous insulating material that allows current to flow between them. The electrolyte is a sulfuric acid and water solution, commonly referred to as battery acid.  Highly corrosive and difficult to handle, operators dispense acid through filling stations. Each station has a small reservoir, pump and level sensor. Their level sensors often failed due to corrosion attack.

For this reason, Flowline suggested the use of our non-contact ultrasonic sensors that are made of rugged PVDF.  The result is reliable battery acid level measurement.


EchoPod is installed in a standpipe in a battery acid reservoir.

Here, an EchoPod ultrasonic level transmitter is mounted on a 2″ stand pipe in each reservoir. The IP68 sensor was easily configured using our free WebCal software. The 4-20 mA signal is connected to the PLC for automatic tank refilling with a high and low level alarm.

If you want more information on how reliable battery acid level measurement can work for you please call Ryan Herco’s knowledgeable Customer Service staff at 800-848-1141.