Deep SeapHOx™ V2 pH Sensor

The Deep SeapHOx™ V2 combines the SeaFET™ V2 pH sensor with the SBE 37 MicroCAT CTD sensor. The SeapHOx™ V2 allows for the integrated data collection of pH with the critical oceanographic and biological measurement of temperature, salinity, and oxygen. The integrated package also allows the SeaFET™ V2 to take advantage of the SBE 37's pumped flow path and anti-fouling technology, extending deployment durations in some cases.

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Key Features Specifications Resources Content

Deep SeapHOx™ V2: Trusted Deep‑Ocean Precision

The Deep SeapHOx™ V2 delivers reliable, long‑term pH, CTD, and dissolved oxygen measurements in one rugged system. Its ISFET stability, pumped flow path, and anti‑fouling design ensure high‑quality data from coastal sites to 2000‑meter depths.

Key Features

* Comprehensive Monitoring – The Deep SeapHOx™ V2 combines pH, conductivity, temperature, pressure, and optical dissolved oxygen measurements in one robust package * Extended Deployment – With a solid-state ion selective field effect transistor (ISFET) adapted for low to high-pressure environments, the Deep SeapHOx™ V2 ensures stability and high-quality data for at least one year, reducing field servicing costs and data gaps. * Versatile Applications – Ideal for ocean acidification research, climate studies, marine biology, carbon cycle analysis, deoxygenation monitoring, deep-sea coral research, fisheries and aquaculture, and food web studies. * User-Friendly Design – Features an integrated pump, RS-232 interface, internal memory with optional real-time output, and batteries, with the option for external power. The unique flow path and anti-fouling technology extend deployment durations and protect against biofouling.

Parameters Measured

Specifications

Specification	Value
Communication Options	RS-232
Depth Rating (Meters)	2000m
Power Source	Internal , External
Housing Material Options	Titanium
Onboard Memory	Yes
Connector	MCBH-8M , MCBH-4M
Sampling Rate	5 minutes to 24 hours
Memory Capacity (Samples)	32 MB
Power Consumption	340–400 mW
Accuracy	Conductivity ± 0.0003 S/m (0.003 mS/cm) Temperature ± 0.002 °C (-5 to to 35 °C); ± 0.01 °C (35 °C to 45 °C) Optional Pressure ± 0.1% of full scale range Dissolved Oxygen larger of ± 3 µmol/kg (0.07 ml/L, 0.1 mg/L) or ± 2% pH ± 0.05 pH
Software	UCI
Resolution	Conductivity 0.00001 S/m (0.0001 mS/cm) Temperature 0.0001 °C Optional Pressure 0.002% of full scale range Dissolved Oxygen 0.2 µmol/kg pH 0.004 pH
Biofouling Protection	Yes