Beverage dispenser fluid level sensor

A system for identifying a syrup bag of a beverage dispenser for replacement, the system comprising:

• a gas tank configured to supply a pressurized gas at a given gas pressure to a first pump via a gas supply line;
• a first sensor coupled to a first syrup line of the beverage dispenser, the first syrup line coupled at a first end to a first syrup bag and coupled at a second end to the first pump configured to pump syrup from the first syrup bag to a first outlet of the beverage dispenser, the first sensor configured to:
• measure a first pressure within the first syrup line, wherein the first pump is operated using the pressurized gas at the given gas pressure and the first pump is configured to generate within the first syrup line a pressure substantially equivalent to the given gas pressure when the first syrup bag is not empty and the first outlet of the beverage dispenser is closed;
• and
• transmit the measured first pressure across a network;
• and
• a computing system communicatively coupled to the first sensor, the computing system comprising:
• a memory configured to store a threshold pressure;
• and
• a hardware processor communicatively coupled to the memory, the hardware processor configured to:
• receive the measured first pressure from the network;
• determine that the measured first pressure is less than the threshold pressure;
• and
• in response to determining that the measured first pressure is less than the threshold pressure, transmit an alert for display on a user device, the alert identifying the first syrup bag for replacement.