Solinst 114609 3001 Levelogger 5 Water Level Logger, 5m Range

Features:

• Single-eye optical interface - easier to clean, more scratch-resistant
• Increased memory: 150,000 sets of data
• Double o-ring seals for increased leakage protection

It records highly accurate groundwater and surface water level and temperature measurements. It combines a pressure sensor, temperature detector, 10-year lithium battery, and datalogger, sealed within a 22mm x 160mm (7/8" x 6.3") stainless steel housing with a corrosion-resistant coating baked-on using polymerization technology.

It measures absolute pressure using a Hastelloy pressure sensor, offering high resolution and an accuracy of 0.05% FS. Readings are stable in extreme pressure and temperature conditions. The sensor can withstand 2 times over-pressure without permanent damage. Combined with the durable coating inside and out, It has high corrosion and abrasion resistance in harsh environments.

The logger uses a Faraday cage design, which protects against power surges or electrical spikes caused by lightning. Its durable maintenance-free design, high accuracy and stability, make It the most reliable instrument for long-term, continuous water level recording.