The problem with most water depth, temperature, and electrical conductivity sensors (CTD sensors) is that their cost is prohibitively high. Plus they often require an extra barometric pressure sensor to correct for atmospheric pressure. You need a low-cost water level sensor equipped with everything necessary for things like tracking changes in solute movement, groundwater recharge, and surface water hydrology. You need HYDROS 21.

No Need for Costly Extra Sensors

A compact 3.4 cm diameter water level sensor that fits into tight spaces, the HYDROS 21 CTD sensor is a low-cost, durable, and easy-to-use tool for monitoring EC, temperature, and depth in both groundwater and surface water. More importantly, it’s an all-in-one instrument. When used with the ZL6 data logger or any other logging system, you won’t require an additional sensor for measuring and referencing barometric pressure. With  a range of 0 to 120 dS/m and a measuring depth of 10 m, the sensor makes accurate depth and EC measurements for a broad range of applications.

Water level sensor with easy, research-grade data in real time

One of the qualities that makes the HYDROS21 water level sensor so easy to use is its fast plug-and-play compatibility with the ZL6 data logger (also compatible with Campbell Scientific data loggers). Plus, with the ZL6, you can monitor and remotely access cloud data wirelessly from any internet-connected computer or device in near-real time.

Feature Summary

• CTD sensor continuously monitors groundwater and surface water level changes
• Vented sensor means no need for an additional sensor to measure and reference barometric pressure
• Integrated electrical conductivity and temperature measurement
• 3.4cm diameter sensor that fits into tight spaces
• Low cost
• Durable
• Easy to use