UWM
Down to 30 m depth
4 channels
USB output

UnderWater Meter System

Amplifier and data logger system for field and underwater applications

The UnderWater Meter is a high quality research tool that allows you to apply microsensor technology in the field. The robust meter can be used in humid rainforests, wetlands, or operated by scuba divers underwater on coral reefs, in sea grass beds, or muddy estuaries. Read more...

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Ordering Information
Manuals & Videos
UnderWater Meter System

Take your research into the field

The Unisense UnderWater Meter System offers

  • Waterproof to 30 m
  • Easy to operate using magnetic keys
  • Modular system with four channels for use with all Unisense sensors
  • Read directly from large and brigth LED display and log data
  • Digital outputs for data extraction
  • Analog output for external data acquisition
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In situ amplifiers

The delicate microsensor signal is amplified by the In Situ Amplifier (ISA); these function as miniaturized pA or mV meters facilitating polarization of the microsensor. The ISAs ensure high quality signal with extremely low background noise, and are specific for each type of microsensor. All four channels of the UnderWater Meter can therefore be connected to any ISA and the amplifiers can easily be interchanged between channels. This gives you full flexibility and allows you to design an UnderWater Meter system that meets your study requirements

In Situ UniAmp Shallow w. sensor
In Situ UniAmp Shallow for amperometric
In Situ UniAmp shallow for potentiomtric
In Situ UniAmp Shallow connector

Logging Unit

Microsensor data are automatically saved in the logging unit. With the USB output, you can easily upload data to a PC after deployment. Alternatively, data can be monitored online and in real time on a PC using the optional analog output cable with an A/D converter.

UWM logging

Complete UnderWater Meter System

When used for microscale measurements in the field, the microsensors should be mounted in a micromanipulator (MM33) on a stable stand (IS19). For measurements in incubation bottles or bulk water, the sensors can be held by hand or mounted in a frame structure. The UnderWater Meter System with accessories is an excellent choice for field studies giving you flexibility and a world of possibilities.

UWM in the field
Ordering information
Ordering information
System components Product
Datalogger UnderWater Meter (4-channels)
Sensor All Unisense sensors and electrodes
Amplifier In situ amplifiers
Sensor connectors In situ connectors
Micromanipulator MM33 or MM33-2 (Single or double head)
Stand IS19 in situ stand
Calibration chamber CAL300
Optional battery Field battery package

Video Guides

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How to mount microsensors in the In SItu UniAmp System

Related publications

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Stromatolite records of environmental change in perennially ice-covered Lake Joyce, McMurdo Dry Valleys, Antarctica
Mackey, T. J. et all (2018), Biogeochemistry, vol. 137, 73-92
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Cues, Not an Endogenous Rhythm, Control the Dusk Peak in Water-Column Entry by Benthic Copepods
Vopel, Kay et all (2011), Estuaries and Coasts, vol. 34, 1194-1204
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Hypersalinity as a trigger of seagrass (Thalassia testudinum) die-off events in Florida Bay: Evidence bas⁠…
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In situ O2dynamics in submerged Isoetes australis: Varied leaf gas permeability influences underwater pho⁠…
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