WTW - Universal conductivity measuring cells TetraCon® 325

Measuring principle

2 electrodes measuring cell

4 electrodes measuring cell

2 electrodes measuring cell

4 electrodes measuring cell

Measuring Range

0.001 µS/cm ... 200 µS/cm

1 µS/cm ...
2 S/cm

0.001 µS/cm ... 200 µS/cm

0.0001 µS/cm ... 30 µS/cm

1 µS/cm ...
2 S/cm

Cell constant

0.1 cm^-1, ±2%

0.475 cm^-1, ±1.5%

K = 0.1 cm^-1

K = 0.01 cm^-1

K = 0.475 cm^-1

K = 0.778 cm^-1

Resolution

Depends on measuring range

Temperature sensor

Integrated NTC

Temperature Measurement

0 °C ... +130 °C

0 °C ... +100 °C

-5 °C ... 80 °C

0 °C ... 60 °C

Maximum pressure

14 bar (at 20 °C)

10 bar (at 20 °C)

2 bar

Electrical Connection

Integrated PU connection cable with 7-pole screw plug (IP 65)

Integrated cable mit 8-pole plug

8-pole socket for cable KKDU 325

Mechanical

Shaft

Stainless steel 1.4571

Epoxy

POM

Kable gland

Brass, nickel-plated

—

—

—

—

Connection head

—

—

POM

—

Electrodes

Stainless steel 1.4571

Graphite

Stainless steel 1.4571

Graphite

Protection Rating

IP65

IP68
(Sensor and cable)

IP65
(when connected)

(when connected)

(Measuring cell until immersion length)

Weight (without cable)

Approx. 350 g

Approx. 300 g

Approx. 135 g

Approx. 280 g

Approx. 135 g

Approx. 170 g

Warranty

2 years on defects in quality according to § 10 terms of conditions