WTW 301962 LR 325/001 Pure Water Conductivity Measuring Cells
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 ... | 0.001 µS/cm ... 200 µS/cm | 0.0001 µS/cm ... 30 µS/cm | 1 µS/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 | IP65 | ||||
(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 |
Conductivity of ultra pure water and low conducting solutions
Two electrode measuring cells with concentric electrodes of stainless steel and flow vessels made of glass or stainless steel for measurements of ultra pure water
- Precise measured values thanks to concentric electrodes without boundary fields
- Includes flow vessels to prevent wrong results due to carbon dioxide
- No polarization effects thanks to stainless steel electrodes
Ultrapure water conductivity cell with built-in temperature sensor and waterproof plug, cell constant K = 0.1 cm-1, glass flow-through vessel D01/T.