Keller's DCX-22 series are autonomous, rechargeable battery powered level and temperature loggers ideal for shallow or deep well water logging applications. Utilizing proven pressure sensor technology and advanced microprocessor-based electronics, the DCX-22 series is designed and constructed to provide years of trouble-free service under the most demanding conditions.

The Keller DCX-22 series is available in pressure ranges up to 100 mWC. The measured values are mathematically compensated for all linearity and temperature errors of the pressure sensor. The non-volatile memory ensures high data security while storing up to 57,000 user-specified data points.

Data capture is accomplished by periodic data transfer to a laptop or Pocket PC (Windows CE) or, for remote installations, by GSM modem technology. The rechargeable battery, which can provide up to 10 years service between charges, is charged via a USB connection during data retrieval.

Four models are available to cover a wide range of environments and applications:

• DCX-22: Absolute sensor, electronics and battery housed in stainless steel tube. Must be recovered for data read-out.
• DCX-22 SG: Sealed gauge sensor with waterproof cable to surface mounted housing for easier data recovery from fixed installations.
• DCX-22 VG: Vented gauge sensor with barometric compensation via vent tube within the cable, cable connects to surface housing.
• DCX-22 AA: Dual absolute sensors (one in fluid, one in atmosphere) allowing atmospheric compensation without a vent tube.

Keller Logger DCX 4.0 Windows-based software allows users to configure level loggers and display measurements. Values may be graphically displayed, exported, air pressure compensated or converted into other units.