KELLER 36XW-CTD – High-Precision Multi-Parameter Probe for Water

The 36XW-CTD series multi-parameter probes from KELLER Pressure enable the simultaneous measurement of conductivity, temperature and depth (pressure) in bodies of water. Thanks to a mathematical model implemented in the micro controller, temperature dependencies and non-linearities are compensated with precision, guaranteeing consistently stable and highly accurate measurement results.

The integrated Pt1000 achieves a temperature accuracy of ± 0,1 °C. Conductivity can be measured with an accuracy of ± 2,5 % of the selected measuring range and is available in the ranges 0,2 / 2 / 20 und 200 mS/cm. The 36XW-CTD series probes are equipped with an RS485 interface as standard. An SDI-12 interface is available with the 36XiW-CTD series.

Extended lightning protection is available as an added extra; this provides additional operation safety even under challenging environmental conditions.

The KELLER 36XW-CTD multi-parameter probe is used in groundwater and surface water as well as water tanks in order to determine water quality and salt content, or to carry out hydrostatic pressure measurements.

KELLER 36XW-CTD offers:

• Conductivity measurement with 6 titanium electrodes in 4-wire technology
• Temperature measurement with Pt1000 sensor
• Robust stainless-steel housing
• Piezoresistive pressure sensor chip, encapsulated insulated 
• For many years of maintenance-free operation