RBRduo³ C.T | uv & RBRconcerto³ C.T.D | uv

The RBRduo³ C.T | uv and RBRconcerto³ C.T.D | uv offer the same features as our trusted conductivity, temperature, and depth instruments, plus active antifouling. Four UV LEDs illuminate critical sensor surfaces and control biological growth on the conductivity cell, thus maintaining high accuracy measurements during extended deployments in the photic zone.

Physical Power 8 AA cells Communication USB-C or RS-232/485 Storage 240M readings Clock accuracy ±60 seconds/year Depth rating 200m Diameter 63.3mm housing, 100mm guard Length ~470mm Weight (air) ~1700g Weight (water) ~250g Sampling speed 1min or 30s

Conductivity Range 0-85mS/cm Initial accuracy ±0.003mS/cm Typical stability ±0.010mS/cm/year Resolution <0.001mS/cm

Temperature Range -5°C to 35°C Initial accuracy ±0.002°C Resolution <0.00005°C Time constant <20s Typical stability 0.002°C/year

Pressure (Depth) Range 20 / 50 / 100 / 200dbar Initial accuracy ±0.05% full scale Resolution <0.001% full scale Time constant <0.01s Typical stability ±0.05% full scale per year