Water Level Sensors


Orpheus Mini

Orpheus Mini

The OTT Orpheus Mini is a submersible water level logger designed for long-term uninterrupted, real time water level monitoring.

The Orpheus measures the hydrostatic pressure of water above its measuring cell and uses this to determine water level.

The Orpheus is suitable for both:

• Surface Water Applications
• Groundwater Applications

The Orpheus is suitable for 25mm monitoring wells and above.

A vented measuring cell & inbuilt temperature sensor means data is compensated for localised atmospheric pressure & temperature.

Orpheus Mini


Orpheus Mini Datlogging

The Orpheus can store an impressive 500,000 data-points including:

• Date
• Time
• Depth
• Pressure
• Temperature

Data can be downloaded without removing the Orpheus from the monitoring well:

Data is downloaded using via an infrared interface (IrDA) and saves directly to a Laptop or Pocket PC.

Data can be easily integrated using the OTT ITC (GSM/GPRS/SMS) where required.




Measurement Ranges

The Orpheus is available in the following ranges:

• 0m – 4m
• 0m – 10m
• 0m – 20m
• 0m – 40m
• 0m – 100m


Measuring Cell

Unlike many water level loggers available, the Orpheus features a user replaceable measuring cell.

Orpheus Measuring Cell


Power Options

The Orpheus is available with the following battery options:

• Alkaline batteries (~5 years)
• Lithium battery (~1.5 years)

Orheus Mini Batteries




OTT Logo

This product is manufactured by OTT and proudly represented by Aqualab Scientific.


Ceramic pressure cell, unlike membrane technology, will not deform over time providing long-term measurement stability.

High Performance
Mechanical resistance to pressure overload and corrosive waters.

Complete Solution
Pressure sensor with built-in data logger manages and stores pressure, depth to water, water level (stage), and/or temperature measurements at programmable intervals.

Flexible Installation
Easily installs in wells or pipes of 1 in. diameter or larger with use of convenient adapter plates.

Simple Maintenance
Infrared interface, batteries, and desiccant are accessible at the top of the well or pipe and no tools are required.


Orpheus Mini Specifications


Available models include:

  • Orpheus-Mini (0m - 4m)
    Product number# 5544000232-0
  • Orpheus-Mini (0m - 10m)
    Product number# 5544000232-1
  • Orpheus-Mini (0m - 20m)
    Product number# 5544000232-2
  • Orpheus-Mini (0m - 40m)
    Product number# 5544000232-3
  • Orpheus-Mini (0m - 100m)
    Product number# 5544000232-4
OTT Orpheus Mini Brochure (AUS)

OTT Orpheus Mini Brochure (AUS)

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OTT Groundwater Measuring Devices

OTT Groundwater Measuring Devices

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OTT Groundwater Sensor Selection Guide

OTT Groundwater Sensor Selection Guide

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OTT Orpheus Mini User Manual

OTT Orpheus Mini User Manual

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Additional files
OTT Orpheus Mini Information Sheet

OTT Orpheus Mini Information Sheet

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Optional Accessories
  • Spare Alkaline Batteries (3pk)
    Product number# 9680000495
  • Spare Lithium Batteries (3pk)
    Product number# 9780000895
  • Spare Desiccant Cartridges (2pk)
    Product number# 9710028095
  • Spare Installation Kit 1", 2" ,4" or 6"
    Product number# 5544002592
  • Spare Suspension Bracket (for top caps)
    Product number# 5544045041
  • Pentagon Wrench
    Product number# 2025009541
  • Aluminium Top Cap (1.5")
    Product number# 2422005195
  • Aluminium Top Cap (2")
    Product number# 2422005295
  • Aluminium Top Cap (3")
    Product number# 2422005395
  • Aluminium Top Cap (4")
    Product number# 2422005495
  • Aluminium Top Cap (4.5")
    Product number# 2422005895
  • Aluminium Top Cap (5")
    Product number# 2422005695
  • Aluminium Top Cap (6")
    Product number# 2422005795
  • OTT Total Solutions Webinar
OTT Orpheus Mini Firmware

OTT Orpheus Mini Firmware

Version: V 1.53.5

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OTT Water Logger Operating Program

OTT Water Logger Operating Program

Version: V 1.71.0

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