The invention is a device to allow a miniature commodity barometric pressure sensor to be used
to remotely measure sealed chambers, including harsh environments which the sensor should not
be directly exposed to. This device is implemented in a modular miniature sensor board in an 3D
printer, where it allows the operation of many fans and blowers to be monitored and controlled
for optimal cooling and pneumatic powder transport conditions.
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INC, HP, "AIR TUBE PRESSURE SENSOR", Technical Disclosure Commons, (October 05, 2018)