The Keller DCX-38 VG is an autonomous submersible data logger designed for high-resolution water level recording, with full-scale ranges as low as 0.5 mWC (50 mbar). It features a rugged, gold-plated ceramic diaphragm for outstanding long-term stability and a 316L stainless steel housing with user-replaceable battery.

The logger uses a relative pressure sensor with vented cable that automatically compensates for atmospheric pressure variations, eliminating the need for separate barometric monitoring. Data is stored in non-volatile memory with capacity for up to 57,000 measurements. With a total error band of ±0.2% FS and resolution up to 0.002% FS, it provides accurate measurements for long-term deployment.

Key Features

• Pressure ranges: 0-50 mbar, 0-100 mbar, 0-300 mbar
• Total Error Band: ±0.2% FS in compensated range -10 to 40°C
• Resolution: up to 0.002% FS
• RS‑485 digital interface
• Vented cable for automatic atmospheric compensation (5m/10m standard)
• User-replaceable AA lithium battery; ~10-year life at 1 measurement/hour
• Compensated temperature range: -10 to 40°C

Applications

• Groundwater monitoring
• Surface water level recording
• Tank and reservoir level measurement
• Environmental and hydrological studies