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Underwater Sensor Solutions

The simple, flexible and compact AquapHOx underwater sensor systems include stand-alone loggers with internal data storage for long-term deployment and transmitters which offer fast sampling and easy integration into existing set-ups with analog outputs.

Both loggers and transmitters are available in titanium housing for deep-sea deployments (down to 4000m) and in POM housing for shallow water monitoring (down to 100m). These devices are compatible with different oxygen, pH and temperature sensor formats.

All AquapHOx devices are ideally suited for measurements in a variety of marine monitoring applications, including:

  • Ocean and Coastal Habitats
  • Deep Sea Research
  • Open Ocean Research
  • Water Column Profiling
  • Sediment Profiling
  • Oxygen Minimum Zones
  • Aquaculture
  • In-Situ Incubations, etc.
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Deep Sea Loggers and Transmitters

Operation to depths of 4000m with a broad range of O2, pH, and temperature sensors

  • APHOX-LX​​

    • Stand-alone logging for >1 year

    • Integrated rechargeable battery

    • Integrated fast Pt100 temperature sensor

  • APHOX-TX

    • Measurements with 40 Hz possible​

    • For profiling and eddy covariance set-ups

    • Analog outputs / USB / RS485/ Modbus

AquapHOx Logger Specifications
AquapHOx Transmitter Specifications
APHOX-LX
APHOX-TX

Shallow Water Oxygen Loggers and Transmitters

Operation to depths of 100m

  • APHOX-L-O2

    • Broad range of optical oxygen sensors

    • Stand-alone logging for >1 year

    • Integrated rechargeable battery

    • Integrated fast Pt100 temperature sensor

  • APHOX-T-O2

    • Measurements with 40Hz possible​

    • For profiling and eddy covariance set-ups

    • Broad range of optical oxygen sensors

    • Analog outputs / USB / RS485 / Modbus

AquapHOx Logger Specifications
AquapHOx Transmitter Specifications
APHOX-L-O2
APHOX-T-O2

Shallow Water pH Loggers and Transmitters

Operation to depths of 100m

  • APHOX-L-PH

    • Broad range of optical pH sensors​

    • Stand-alone logging for >1 year

    • Integrated rechargeable battery

    • Integrated fast Pt100 temperature sensor

  • APHOX-T-PH​

    • Broad range of optical pH sensors

    • Analog outputs / USB / RS485 / Modbus

AquapHOx Logger Specifications
AquapHOx Transmitter Specifications
APHOX-L-PH
APHOX-T-PH

Shallow Water Oxygen OEM Meter

Operation to depths of 50m

  • APHOX-S-O2 with APHOX-S-OXCAP

    • Factory calibrated ​

    • Corrosion and biofouling resistant housing

    • For temperature-compensated oxygen measurements

    • Analog outputs/RS485/Modbus

    • Operation down to 50 m depths

    • Exchangeable oxygen sensor caps

APHOX-S Datasheet
APHOX-S-ScrewCap Assembly v1
APHOX-S-OXCAP

Sensor Options for AquapHOx Loggers and Transmitters

All sensors include underwater SUB-connector

Oxygen Sensors and Caps

No oxygen consumption, negligible drift

  • OXR430-UHS-SUB: Retractable fiber 430µm in diameter, ultra-high speed response time (t90 < 0.3s)

  • OXR430-HS-SUB: Retractable fiber 430µm in diameter, high speed response time (t90 < 0.8s)

  • OXR430-OI-SUB: Retractable fiber 430µm in diameter, optically isolated (OI)

  • OXR50-OI-SUB: Retractable fiber 230µm in diameter, 50-70µm sharp sensor tip, optically isolated (OI)

  • OXR50-UHS-SUB: Retractable fiber 230µm in diameter, 50-70µm sharp sensor tip, ultra-high speed

  • OXR50-HS-SUB: Retractable fiber 230µm in diameter, 50-70µm sharp sensor tip, high speed

  • OXR50-SUB: Retractable fiber 230µm in diameter, 50-70µm sharp sensor tip

  • OXF1100-UHS-SUB: Fixed sensor tip surrounded by needle, protrudes ca. 2mm, ultra-high response

  • OXF1100-HS-SUB: Fixed sensor tip surrounded by needle, protrudes ca. 2mm, high response

  • OXF1100-SUB: Fixed sensor tip surrounded by needle, protrudes ca. 2mm

  • OXR50-SUB: Retractable fiber 230µm in diameter, 50-70µm sharp sensor tip

  • OXB50-UHS-SUB: Bare fiber, 50-70µm sharp sensor tip, ultra-high speed

  • OXB50-HS-SUB: Bare fiber, 50-70µm sharp sensor tip, high-speed

  • OXB50-SUB: Bare fiber, 50-70µm sharp sensor tip

  • OXB430-SUB: Optical fiber 430µm in diameter
  • OXB430-HS-SUB: Optical fiber 430µm in diameter, high-speed

  • OXB430-UHS-SUB: Optical fiber 430µm in diameter, ultra-high speed

  • OXROB10-SUB: Stainless steel 10cm long, 3mm in diameter, optically isolated (OI)

  • OXROBSC-SUB: Robust screw cap probe with 2 oxygen screw cap sensors, optically isolated (OI)

  • OXROB10-CL4-SUB: Stainless steel 10cm long, 3mm in diameter, 4m cable length, OI

  • OXROB3-SUB: Stainless steel 3cm long, 3mm in diameter, optically isolated (OI)

  • OXROB3-CL4-SUB: Stainless steel 3cm long, 3mm in diameter, 4m cable length, OI

  • OXCAP-SUB: Optical oxygen sensor screw cap, fast sensor with low drift

  • UTROXCAP-SUB: Optical ultra-trace oxygen sensor screw cap, fast sensor with low drift

  • OXCAPG-UHS-SUB: Optical oxygen sensor screw cap, ultra high speed response time (t90 < 0.5s)

  • OXCAPG-HS-SUB: Optical oxygen sensor screw cap, high speed response time (t90 < 1s)

  • OXFLOW-HS: Sterile oxygen flow-through cell with integrated sensor, high speed

  • OXSP5-SUB: Optical oxygen sensor screw cap, ultra high speed response time (t90 < 0.5s)

OXR430-UHS-SUB
OXR50-OI-SUB
OXROBSC-SUB
OXROB10-CL4-SUB
OXROB3-SUB
OXCAP-SUB
UTROXCAP-SUB

pH Sensors and Caps

Minimal cross-sensitivity to high ionic strength

  • PHCAP-PK8T-SUB: Robust optical pH sensor cap, 7.0-9.0 range pH total scale

  • PHCAP-PK8-SUB: Robust optical pH sensor cap, measurement range pH 7.0-9.0

  • PHCAP-PK7-SUB: Robust optical pH sensor cap, measurement range pH 6.0-8.0

  • PHROBSC-PK8T-SUB: Robust pH Probe, 6.0-8.0 range pH total scale, exchangeable Screw Caps

  • PHROBSC-PK8-SUB: Measurement range pH 6.0-8.0, exchangeable Screw Caps

  • PHROBSC-PK7-SUB: Measurement range pH 7.0-9.0, exchangeable Screw Caps

  • PHSP5-PK8T: sensor spots, 5mm in diameter, for measurements in closed containers

PHCAP-PK7-SUB
PHROBSC-PK8T-SUB

Temperature Sensors

Measurement range of 0°C – 50°C, Fast response time (<<1s)

  • TPROBSC-SUB: Only for shallow-water applications

  • TPR430-SUB: Retractable fiber 430µm in diameter

  • TPB430-SUB: Optical fiber 430µm in diameter

  • TPF1100-SUB: Fixed needle temperature probe

TPROBSC-SUB
TPR430-SUB
TPB430-SUB
TPF1100-SUB

PICO Series Underwater OEM Meters

1-channel underwater OEM devices

  • PICO-O2-SUB​​

    • Broad range of different compatible sensors

    • Compact dimensions 59 x Ø17 mm

    • Very low power consumption

    • UART interface

  • PICO-PH-SUB

    • Compact dimensions 59 x Ø17 mm

    • Very low power consumption

    • UART interface

PICO-O2-SUB Specifications
PICO-pH-SUB Specifications
PICO-O2-SUB
PICO-PH-SUB

Sensor Options for PICO Series Underwater OEM Meters

All Sensors include Underwater SUB-connector

​Oxygen Sensors and Caps

No oxygen consumption, negligible drift

  • OXCAP-SUB: Optical oxygen sensor screw cap, fast sensor with low drift

  • UTROXCAP-SUB: Optical ultra-trace oxygen sensor screw cap, fast sensor with low drift

  • OXCAPG-UHS-SUB: Optical oxygen sensor screw cap, ultra high-speed response time (t90 < 0.5s),

  • OXCAPG-HS-SUB: Optical oxygen sensor screw cap, high-speed response time (t90 < 1s)

  • OXSP5-SUB: Sensor spots (8 pcs.) 5mm in diameter, no oxygen consumption

  • OXR430-UHS-SUB: Retractable fiber 430µm in diameter, ultra-high speed response time (t90 < 0.3s)

  • OXR430-HS-SUB: Retractable fiber 430µm in diameter, high-speed response time (t90 < 0.8s)

  • OXR430-OI-SUB: Retractable fiber 430µm in diameter, optically isolated (OI)

  • OXR430-SUB: Retractable fiber 430µm in diameter

  • OXR50-UHS-SUB: Retractable fiber, 50-70µm sensor tip, ultra-high speed response time (t90 < 0.3s)

  • OXR50-HS-SUB: Retractable fiber 230µm, 50-70µm sensor tip, high speed response time (t90 < 0.8s)

  • OXR50-OI-SUB: Retractable fiber 230µm in diameter, 50-70µm sharp sensor tip, optically isolated (OI)

  • OXROBSC-SUB: Robust screw cap probe with 2 oxygen screw cap sensors, optically isolated (OI)

  • OXROB10-CL4-SUB: Stainless steel 10cm long, 3mm in diameter, 4m cable length (CL4), OI

  • OXROB3-SUB: Stainless steel 3cm long, 3mm in diameter, optically isolated (OI)

  • OXROB3-CL4-SUB: Stainless steel 3cm long, 3mm in diameter, 4m cable length (CL4), OI

  • OXF50-UHS-SUB: Fixed needle, 50-70µm sensor tip protrudes ca. 6mm, ultra-high speed (t90 < 0.3s)

  • OXF50-HS-SUB: Fixed needle, 50-70µm sharp sensor tip protrudes ca. 6mm, high speed (t90 < 0.8s)

  • OXF50-SUB: Fixed needle sensor tip, sensor tip protrudes ca. 6mm, 50-70µm sharp sensor tip

  • OXF1100-UHS-SUB: Fixed needle, Sensor tip protrudes ca. 2mm, ultra-high speed (t90 < 0.3s)

  • OXF1100-HS-SUB: Fixed needle sensor tip, sensor tip protrudes ca. 2mm, high speed (t90 < 0.8s)

  • OXF1100-SUB: Fixed needle sensor tip, sensor tip protrudes ca. 2mm

  • OXB430-UHS-SUB: Optical fiber 430µm in diameter, ultra-high speed response time (t90 < 0.3s)

  • OXB430-HS-SUB: Optical fiber 430µm in diameter, high speed response time (t90 < 0.8s)

  • OXB430-SUB: Optical fiber 430µm in diameter

  • OXB50-UHS-SUB: 50-70µm sharp sensor tip, ultra-high speed response time (t90 < 0.3s)

  • OXB50-HS-SUB: 50-70µm sharp sensor tip, high speed response time (t90 < 0.8s)

  • OXB50-SUB: 50-70µm sharp sensor tip

OXCAP-SUB
UTROXCAP-SUB
OXSP5-SUB
OXR430-UHS-SUB
OXR50-UHS-SUB
OXROBSC-SUB
OXROB10-CL4-SUB
OXROB3-SUB
OXF50-UHS-SUB
OXF1100-UHS-SUB
OXB430-SUB
OXB50-SUB

pH Sensors and Caps

Minimal cross-sensitivity to high ionic strength

  • PHCAP-PK8T-SUB: Total Scale pH measurement, robust optical pH sensor cap

  • PHCAP-PK8-SUB: Robust optical pH sensor cap, measurement range pH 7.0-9.0

  • PHCAP-PK7-SUB: Robust optical pH sensor cap, measurement range pH 6.0-8.0

  • PHROBSC-PK8T-SUB: Robust pH Probe, 6.0-8.0 range pH total scale,  exchangeable screw caps

  • PHROBSC-PK8-SUB: For pH measurements between pH 6.0-8.0,  exchangeable screw caps

  • PHROBSC-PK7-SUB: For pH measurements between pH 7.0-9.0, exchangeable screw caps

PHCAP-PK7-SUB
PHROBSC-PK7-SUB

Accessories

  • PHCAL2: Required for acid calibration of optical pH sensors, 10 capsules

  • PHCAL11: Required for basic calibration of optical pH sensors, 10 capsules

  • OXCAL: Recommended 0% O2 calibration of optical oxygen sensors, 10 capsules

  • APHOX-T-PIG: Transmitter inline cable (pigtail) for custom cable assemblies, ca. 60cm length

  • APHOX-T-VECTOR: For Nortek® Vector acoustic doppler velocimeter connection

  • PICO-USB: USB interface cable for evaluation of PICO-O2, PICO-PH, and PICO-T, incl. software

  • PICO-EXT: Modbus analog out module for the ultra-compact optical PICO OEM modules

  • TSUB21-NC: Flexible Teflon-coated temperature probe, no connector for soldering, Tip and cable submersible in water

PHCAL2
PHCAL11
APHOX-T-PIG
APHOX-T-VECTOR
PICO-USB
PICO-EXT
TSUB21-NC

APHOX-FTC Contactless Underwater Flow-through-cell

  • For APHOX®-T and APHOX®-L devices

  • Fully submergable

  • Usable in the Field and In-Lab

  • Compatible with all CAP and SUB-connector sensor

APHOX-FTC
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