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EcoLine/QuadroLine® – Analog monitors for D.O., pH and Conductivity

Easy of use and maximum operating safety at an attractive price were the basic design criteria for the development of the EcoLine monitors. As a result of the logical further development of the successful EMC concept, WTW has also been able to make these advantages available to customers at an attractive price.

EcoLine and QuadroLine® monitors are the right choice when single point measurements require a dedicated monitor.

EcoLine Oxi 170, pH 170, LF 170

  • Outstanding price/performance ratio
  • Built-in lightning protection
  • Galvanically isolated inputs and outputs

With the EcoLine series WTW offers an economical and technically flexible and reliable system solution which is suitable for a wide range of applications water and wastewater applications.

D.O. Measurement
EcoLine Oxi 170
0.0 ... 60.0 mg/l or
0 ... 600% saturation,
user-selectable, depending on sensor type
0.1 mg/l or 0.01 mg/l;
1% or 0.1%
(depending upon the sensor)
pH Measurement
EcoLine pH 170
0.00 ... 14.00 pH 0.01 pH
ORP Measurement
EcoLine pH 170
-1500 mV ... +1500 mV 1 mV
Temperature Measurement
EcoLine pH 170
NTC: -5 °C ... 100 °C
Pt 100/Pt 1000: -20 °C ... 130 °C
0.1 K
Conductivity Measurement
EcoLine LF 170
0.000 ... 1.999 µS/cm (0.01 cm-1);
0.00 ... 19.99 µS/cm (0.01 cm-1, 0.1 cm-1);
0.0 ... 199.9 µS/cm (0.1 cm-1, 1 cm-1);
0.000 ... 1.999 mS/cm (0.1 cm-1, 1 cm-1);
0.00 ... 19.99 mS/cm (1 cm-1);
0.0 ... 199.9 mS/cm (1 cm-1, 10 cm-1);
0 ... 1000 mS/cm (10 cm-1)
0.001 µS/cm to 1 mS/cm
(depending on measuring range)

QuadroLine® Oxi 296, pH 296, LF 296

  • Outstanding price/performance ratio
  • Built-in lightning protection
  • Galvanically isolated inputs and outputs

The QuadroLine® series is an extremely powerful monitor in a compact form and at an attractive price-performance ratio. These monitors are intended to be built into control panels and fulfill all the requirements which industrial practice demands from such systems today. Based on the proven technology of the WTW monitors of the EcoLine family, the QuadroLine® instruments have the same impressive performance features.

D.O. Measurement
QuadroLine® Oxi 296
0.0 ... 60.0 mg/l or
0 ... 600% saturation,
user-selectable, depending on sensor type
0.1 mg/l or 0.01 mg/l;
1% or 0.1%
(depending upon the sensor)
pH Measurement
QuadroLine® pH 296
0.00 ... 14.00 pH 0.01 pH
ORP Measurement
QuadroLine® pH 296
-1500 mV ... +1500 mV 1 mV
Temperature Measurement
QuadroLine® pH 296
NTC: -5 °C ... 100 °C
Pt 100/Pt 1000: -20 °C ... 130 °C
0.1 K
Conductivity Measurement
QuadroLine® LF 296
0.000 ... 1.999 µS/cm (0.01 cm-1);
0.00 ... 19.99 µS/cm (0.01 cm-1, 0.1 cm-1);
0.0 ... 199.9 µS/cm (0.1 cm-1, 1 cm-1);
0.000 ... 1.999 mS/cm (0.1 cm-1, 1 cm-1);
0.00 ... 19.99 mS/cm (1 cm-1);
0.0 ... 199.9 mS/cm (1 cm-1, 10 cm-1);
0 ... 1000 mS/cm (10 cm-1)
0.001 µS/cm to 1 mS/cm
(depending on measuring range)