RBRquartz³ BPR|zero bottom pressure recorder
Product Number：RBRquartz³ BPR|zero bottom pressure recorder
The RBRquartz³ BPR|zero is a special version of the robust RBRquartz³ BPR implementing a novel 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.
Long deployments
High accuracy
Quartz stability
Up to 8Hz sampling
AzeroA drift verification
10ppb resolution
Long deployments
High accuracy
Quartz stability
Up to 8Hz sampling
AzeroA drift verification
10ppb resolution
The 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.
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.
| Physical Storage 240M readings Power Internal: 8 AA cells External: 9.5V to 30V Communication Internal: USB-C External: RS-232/485, or Ethernet Clock drift ±60 seconds/year Depth rating 7000m Housing Titanium Size 788mm x Ø140mm Weight ~30kg in air,18kg in water (single pressure unit, with batteries) |
| Temperature Range -5°C to 35°C Accuracy ±0.002°C Resolution 0.00005°C Typical stability 0.002°C/year Time constant ~3 minutes |
| Depth Range 1000 / 2000 / 4000 / 7000 dbar Initial accuracy ±0.01% full scale Resolution 10ppb (at 1Hz sampling rate) Typical stability <1cm/year at 7000dbar (with AzeroA drift correction) |
