302229 LRD 325-7
4电极旋入式电导池，1/2英寸NPT，用于模拟监测器。带集成温度传感器、7米（23英尺）电缆和防水插头（IP68）
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Conductivity measuring cells to be connected to analog transmitters
All analog conductivity measuring cells are equipped with an integrated temperature compensation and cover all applications:
•In wastewater treatment plants, as flow measurement or in the pipeline: The right solution for every application
•Highest linearity by 4 electrode measuring cell
•High operational safety by robust design
You have the application - we have the application - we have the measuring cell! The unique 4 electrode measuring cell compensates for possible contamination and polarization effects. All measuring cells can be connected to the LF monitor LF 298 NTC (exception: TetraCon® 700).
TetraCon® 700 – Designed as an immersion encoder specifically for use in wastewater treatment plants
Conductivity measuring cell with 4 electrode system, integrated temperature sensor, anti-slip electrodes and breakage-resistance shaft; measuring range 10 µS/cm to 1000 mS/cm. Only as replacement armature for analog monitors of the Ecoline® or QuadroLine® series. Still available as digital version (IQ SENSOR NET System 181).
LRD 01 – for the installation into pipelines
Conductivity measuring cell as V4A model. With integrated temperature sensor (up to 130 °C), measuring range 0.001 to 200 µS/cm, pressure-resistant to 14 bar, 1/2 inch NPT screw thread.
LRD 325 – for the installation into pipelines
Conductivity measuring cell with integrated temperature sensor (up to 100 °C). Measuring range 1 µS/cm to 2 S/cm, pressure-resistant to 10 bar, 1/2 inch NPT screw thread.Model
LRD 01
LRD 325
LR 325/01
LR 325/001
TetraCon® 325
TetraCon® DU/T
Order No.
302220, 302222
302225, 302229
301961
301962
301960, 301970, 301971
301252
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/cm0.001 µS/cm ... 200 µS/cm
0.0001 µS/cm ... 30 µS/cm
1 µS/cm ...
2 S/cmCell 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
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—
—
—
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
