Water Quality

HOBO water quality monitoring solutions include loggers for measuring conductivity, salinity, pH, dissolved oxygen, and more – in lakes, streams, rivers, estuaries, and coastal waters.

HOBO Loggers are built to last and withstand a wide range of environmental conditions including temperature extremes, rushing rocky streams and ocean storms. Award-winning HOBO water monitoring data loggers provide years of reliable, accurate performance.

Display per page

HOBO MicroRX Water Level / Flow Station

The HOBO MicroRX Water Level Station is a cellular, web-enabled water level monitoring solution for stormwater, floodwater, irrigation, hydrologic, and environmental applications

$0.00 (ex gst)

HOBO MX2501 - pH and Temperature Bluetooth Data Logger

The new low-cost HOBO® MX2501 pH and Temperature logger is designed for long-term monitoring of pH in estuaries, lakes, streams, rivers, and oceans.

$1,424.00 (ex gst)

HOBO U24-001 - Conductivity/Salinity (Fresh Water) Data Logger

The HOBO U24 Conductivity Logger is a high-accuracy, cost-effective water quality data logger for measuring conductivity and temperature in streams, lakes, and other freshwater sources

$1,618.00 (ex gst)

HOBO U24-002-C - Conductivity/Salinity (Salt Water) Data Logger

The HOBO U24-002-C is a cost-effective data logger for measuring salinity, conductivity and temperature in saltwater environments with relatively small changes in salinity (±5,000 μS/cm) such as saltwater bays, or to detect salinity events such as upwelling, rainstorm, and discharge events.

$1,618.00 (ex gst)

HOBO U26-001 - Dissolved Oxygen Data Logger

The HOBO U26 Dissolved Oxygen Logger is a highly precise, low-cost data logger for measuring concentrations of oxygen in lakes, streams, rivers, estuaries, and coastal waters. Used by aquatic biologists, hydrologists, and other research professionals, the HOBO U26 combines the high accuracy, robust performance of industry-leading RDO® Basic (Rugged Dissolved Oxygen) sensor technology with an easy-to-maintain design.

$2,642.00 (ex gst)

HOBO MX2202 Pendant - Water Temperature/Light Bluetooth Data Logger

The HOBO MX2202 water temperature/light level logger leverages the power of Bluetooth Low Energy (BLE) to deliver accurate temperature and relative light-level measurements straight to your iOS or Android mobile device.

$142.00 (ex gst)

HOBO MX2201 Pendant - Water Temperature Bluetooth Data Logger

The HOBO MX2201 water temperature logger leverages the power of Bluetooth Low Energy (BLE) to deliver accurate temperature measurements straight to your iOS or Android mobile device

$112.00 (ex gst)

HOBO Pendant® UA-001-08 - Temperature/Alarm Data Logger (8K)

A miniature, waterproof one-channel temperature data logger, this model is value-priced for short-term shipping applications or long-term monitoring

$93.00 (ex gst)

HOBO Pendant® UA-001-64 - Temperature/Alarm Data Logger (64K)

A miniature, waterproof one-channel temperature data logger, this model is value-priced for short-term shipping applications or long-term deployment.

$123.00 (ex gst)

HOBO Pendant® UA-002-08 - Temperature/Light Data Logger (8K)

A miniature, waterproof two-channel temperature and relative light level data logger, this 8K model is value-priced for deployment in indoor, outdoor, and underwater applications measuring relative light levels and ambient temperatures.

$104.00 (ex gst)

HOBO Pendant® UA-002-64 - Temperature/Light Data Logger (64K)

A miniature two-channel temperature and relative light level data logger, this 64K model is waterproof and value-priced for deployment in indoor, outdoor, and underwater applications measuring relative light levels and ambient temperatures.

$131.00 (ex gst)

pHionics STs Conductivity Sensor with 4-20mA output

The pHionics STs Series™ Conductivity is a water quality sensor designed to pair with a datalogger or RTU for real-time data capture.

$2,329.00 (ex gst)

pHionics STs DO (Dissolved Oxygen) Sensor with 4-20mA

The pHionics STs Series™ Dissolved Oxygen sensor accurately measures dissolved oxygen (0-20 mg/L or percent saturation) and temperature (0-50°C) over long periods of time with little maintenance required.

$2,592.00 (ex gst)

pHionics STs ORP (Redox) Sensor with 4-20mA output

The pHionics STs Series™ ORP sensor provides reliable ORP (redox) and temperature measurements to a datalogger, RTU, PLC, or SCADA system for continuous water quality monitoring.

$1,985.00 (ex gst)

pHionics STs pH Sensor with 4-20mA output

The pHionics STs Series™ pH sensor provides accurate pH and temperature measurements from 0-14pH to a datalogger or RTU for continuous water quality monitoring.

$1,883.00 (ex gst)