BOTTOM PRESSURE RECORDER
HIGH STABILITY, AzeroA CORRECTION
The RBRquartz³ BPR | zero is a special version of the robust RBRquartz³ BPR implementing the AzeroA technique to correct for the long-term drift in the Paroscientific Digiquartz® pressure gauge . This instrument is intended for deep, long-term deployments, where high stability and resolution of absolute pressure measurements are critical.
PLANETThe RBRquartz³ BPR | zero integrates one or two Paroscientific Digiquartz® pressure gauges, an internal quartz barometer, and a switching valve. The AzeroA drift correction technique periodically activates the switching valve to perform reference measurements of internal housing pressure. The resulting long term drift is several hundred times lower than with uncompensated measurements. The RBRquartz³ BPR | zero requires external power to operate the valve, and can use RBRfermata underwater battery canisters, or connect via cable to an observatory for external power and realtime data access.
