How Did We Make Keg Sentry Simple, We Left Out the Software.

Keg Sentry replaces the computers, software, and Internet access associated with cloud-based monitoring systems with two components:  A plug-in Monitor Module (left), and an NSF approved Flow-Sensor (right).  One set is required to monitor one tap.  Monitor Modules are then installed in any number of  Monitor Enclosures, which can be mounted right at the bar, and their Flow-Sensors are then mounted within a few feet of their companion kegs.

Keg Sentry's processors require three values to monitor a beer tap:

  • A Pour Value, for example, a US pint, an imperial pint, or a half-liter pour. 
  • The number of pints contained in the keg being monitored.  Any Number from 1 to 999.  

Keg Sentry's proprietary technology uses two sets of binary switches to program its processors instead of a computer program and application software. Referring to the lower left and right hand corners of the Monitor Module photograph, the two switches on the right are set to 14, which is the default value for a US pint, and the three switches on the left are set to 124, which is the number of US pints in a full keg. These three switches are also used to set a Low Level Alarm point.

Binary switch values are changed by pressing a small detent on the top and bottom of each switch with a ball point pen to increase or decrease the value of each number. The initial programming process takes about a minute for a new keg, and resetting the same size keg requires a few seconds to push two momentary push-button switches.

  • A user set, Low Level Alarm.

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The accuracy of a Keg Sentry Monitor is totally dependent on data that it receives from its companion Flow-Sensor.  The Flow-Sensor sends a sequence of digital pulses to it's Monitor that are proportional to the amount of beer flowing through its small turbine: for example, 100 pulses per pint.

Flow-Sensors typically have a manufacturing tolerance of around ±3 pints per 124-pint keg.  In order to be competitive in the draft monitoring market, this tolerance must be reduced to ±1 pint per keg, which is no easy task.

Keg Essentials' found the answer.  Keg Sentry can fine tune any Flow-Sensor error to 1% or less with a simple adjustment of its Pour Value Switch.  For example, if there are still three pints of beer left when the first keg blows, all you have to do is reset the 14 on the Pour Value Switch to 17, and that will automatically reset the monitor to operate within its 1% specification. The Pour Value Switch is designed to correct 1 pint per click for a 124 pint keg.


Monitor Module Installed in
DM1000 Single Kegerator Enclosure

Click to Calibrate - No Time Consuming Test Pours Required

Keg Sentry's Repeatability is 1/3 of a Pint per Keg.