SeaFET pH Ocean Sensor

SeaFET™ Ocean pH Sensor

The SeaFET™ Ocean pH sensor is an ion selective field effect transistor (ISFET) type sensor for accurate long-term pH measurements in salt water.


Measurement Range6.5 - 9.0 pH
Initial Accuracy± 0.05 pH
Typical Stability0.003 pH/month
Precision0.004 pH
Internal Memory4 GB                                                                        
Supply Voltage Range 6 - 18 VDC
CommunicationRS-232, USB
Weight (with batteries)5.4 kg in air; 0.1 kg in water
Dimensions (Housing)Diameter 508 mm (20") x 114 mm (4.8")
Maximum Depth50 m
Temperature Range0 to 50 deg C