Digital Pressure Gauge for Keg
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More info to come. | More info to come. | ||
| − | ==Goal== | + | ===Goal=== |
Monitor and adjust CO2 pressure on a keg, for carbonation and serving. | Monitor and adjust CO2 pressure on a keg, for carbonation and serving. | ||
| − | ==Plumbing== | + | ===Plumbing=== |
Corny keg gas quick-disconnect (1/4" male flare) -> 1/4" female flare nut -> short 1/4" aluminum tubing, flared -> 1/4" compression-to-FPT adapter -> 1/4" MPT w/ Schrader (tire) valve | Corny keg gas quick-disconnect (1/4" male flare) -> 1/4" female flare nut -> short 1/4" aluminum tubing, flared -> 1/4" compression-to-FPT adapter -> 1/4" MPT w/ Schrader (tire) valve | ||
| − | The FPT side of the compression adapter was drilled from the side to accept the nozzle of a piezo pressure sensor | + | The FPT side of the compression adapter was drilled from the side to accept the nozzle of a piezo pressure sensor (see [Circuit] below). Pressure sensor was JB-Welded in place. |
| − | ==Circuit== | + | ===Circuit=== |
| − | + | * Input: PRESSURE TRANSDUCER TDR-120 from [[allelectronics.com]] ($1/ea, surplus; no longer available) | |
| − | + | * Logic: Will use AVR to read analog voltage/resistance from sensor. | |
| + | * Output: Segment display? LCD? Web-enable? Bluetooth? | ||
Revision as of 10:57, 14 March 2012
More info to come.
Goal
Monitor and adjust CO2 pressure on a keg, for carbonation and serving.
Plumbing
Corny keg gas quick-disconnect (1/4" male flare) -> 1/4" female flare nut -> short 1/4" aluminum tubing, flared -> 1/4" compression-to-FPT adapter -> 1/4" MPT w/ Schrader (tire) valve
The FPT side of the compression adapter was drilled from the side to accept the nozzle of a piezo pressure sensor (see [Circuit] below). Pressure sensor was JB-Welded in place.
Circuit
- Input: PRESSURE TRANSDUCER TDR-120 from allelectronics.com ($1/ea, surplus; no longer available)
- Logic: Will use AVR to read analog voltage/resistance from sensor.
- Output: Segment display? LCD? Web-enable? Bluetooth?
