What is a laboratory conductivity sensor?
A laboratory conductivity sensor is a tool to measure the electrical conductivity of an electrolyte solution and is based on the material’s ability to conduct an electric current. It is used to measure conductivity in laboratory and field applications.
The electrolytes dissolve to give ions that conduct electricity. The higher the ion concentration, the higher the conductivity. The measuring cell of the conductivity sensor consists of at least two electrically conductive poles with the opposite charge to measure the conductance of a sample.
Technical Data
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Cond Sensor InLab® 710 A 4 platinum poles conductivity cell with a chemical resistant glass body and integrated temperature probe. Designed for aggressive or organic samples.
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Cond probe InLab 720 A 2 platinum poles conductivity cell with a chemical resistant glass body and integrated temperature probe. Designed for aggressive or organic samples.
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InLab 725 A 2 platinum poles conductivity cell with a chemical resistant glass body and integrated temperature probe. Designed for measurement of Bioethanol according ABNT NBR 10547.
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Cond probe InLab 731 A 4 graphite poles conductivity cell with integrated temperature probe. Designed for general applications like standard and high conductivity samples.
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Cond probe InLab 731-ISM A 4 graphite poles conductivity cell with integrated temperature probe and ISM. Designed for general applications like standard and high conductivity samples.
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Cond probe InLab 731-2m A 4 graphite poles conductivity cell with integrated temperature probe. Designed for general applications like standard and high conductivity samples.
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Cable | 1.2 m | 1.2 m | 1.2 m | 2 m | ||
Part Code | 51302256 | 51302255 | 30014160 | 51344020 | 30014092 | 51344022 |
Cable Included | Yes | Yes | Yes | Yes | Yes | Yes |
Cell Constant | 0.80 cm-1 | 0.06 cm-1 | 0.1 cm-1 | 0.57 cm-1 | 0.57 cm-1 | 0.57 cm-1 |
Cell type | 4 platinum poles | 2 platinum poles | 2 platinum poles | 4 graphite poles | 4 graphite poles | 4 graphite poles |
Connector | Mini-DIN | Mini-DIN | Mini-DIN | Mini-DIN | Mini-DIN | Mini-DIN |
Connector on Sensor | Fixed 1 m cable | Fixed 1 m cable | Fixed 1 m cable | Fixed 1.2 m cable | Fixed 1.2 m cable | Fixed 2 m cable |
Connector to Meter | Mini-DIN | Mini-DIN | Mini-DIN | Mini-DIN | Mini-DIN | Mini-DIN |
For portable meter | No | No | No | No | No | No |
Intelligent Sensor Management (ISM®) | No | No | No | No | Yes | No |
Long Cable | No | No | No | No | No | No |
Low Maintenance | Yes | Yes | Yes | Yes | Yes | Yes |
Measurement Type | Conductometric | Conductometric | ||||
Measuring range | 0.01 – 500 mS/cm | 0.1 – 500 µS/cm | 0.1 – 500 µS/cm | 0.01 – 1000 mS/cm | 0.01 – 1000 mS/cm | 0.01 – 1000 mS/cm |
Parameter | Conductivity | Conductivity | Conductivity | Conductivity | Conductivity | Conductivity |
Presence of harsh chemicals | Yes | Yes | Yes | No | No | No |
Product Line | Excellence Titrators | Excellence Titrators | ||||
Sample | High-ion strength | non-aquous samples | non-aquous samples | General Purpose | General Purpose | General Purpose |
Sample Conductivity | >100 uS/cm | <=100 uS/cm | <=100 uS/cm | >100 uS/cm | >100 uS/cm | >100 uS/cm |
Sensor Characteristics | Chemically robust; Temperature Probe; Premium Sensor; Analogue | Chemically robust; Temperature Probe; Premium Sensor; Analogue | Chemically robust; Temperature Probe; Premium Sensor; Analogue | Temperature Probe; Premium Sensor; Analogue; Mechanically robust | Temperature Probe; Automatic Sensor Recognition; Premium Sensor; Calibration History Stored; Analogue; Mechanically robust | Temperature Probe; Premium Sensor; Analogue; Mechanically robust |
Shaft Diameter | 12 mm | 12 mm | 12 mm | 12 mm | 12 mm | 12 mm |
Shaft Material | Glass | Glass | Glass | Epoxy | Epoxy | Epoxy |
Shaft length | 120 mm | 120 mm | 120 mm | 120 mm | 120 mm | 120 mm |
Signal type | Analog | Analog | Analog | Analog | Analog | Analog |
Temperature Probe | NTC 30 kΩ | NTC 30 kΩ | NTC 30 kΩ | NTC 30 kΩ | NTC 30 kΩ | NTC 30 kΩ |
Temperature Range | 0 °C – 100 °C | 0 °C – 100 °C | 0 °C – 100 °C | 0 °C – 100 °C | 0 °C – 100 °C | 0 °C – 100 °C |
Technical Data
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Cond probe InLab 751-4mm A micro 2 platinum poles conductivity cell with a chemical resistant glass body and integrated temperature probe. Designed for small sample volumes.
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Cond probe InLab 752-6mm A micro 2 platinum poles conductivity cell with a chemical resistant glass body and integrated temperature probe. Designed for small sample volumes.
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Cond probe InLab 741 A 2 steel poles conductivity cell with integrated temperature probe. Ideal for low conductivity range samples like pure water and ultra pure water.
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Cond probe InLab 741-ISM A 2 steel poles conductivity cell with integrated temperature probe and ISM. Ideal for low conductivity range samples like pure water and ultra pure water.
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Cond probe InLab 741-5m A 2 steel poles conductivity cell with integrated temperature probe. Ideal for low conductivity range samples like pure water and ultra pure water.
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Cable | 1.2 m | 1.2 m | 1.2 m | 1.2 m | 5 m |
Part Code | 51344030 | 51344031 | 51344024 | 30014094 | 51344026 |
Cable Included | Yes | Yes | Yes | Yes | Yes |
Cell Constant | 1.0 cm-1 | 1.0 cm-1 | 0.105 cm-1 | 0.105 cm-1 | 0.105 cm-1 |
Cell type | 2 platinum poles | 2 platinum poles | 2 steel poles | 2 steel poles | 2 steel poles |
Connector | Mini-DIN | Mini-DIN | Mini-DIN | Mini-DIN | Mini-DIN |
Connector on Sensor | Fixed 1 m cable | Fixed 1 m cable | Fixed 1.2 m cable | Fixed 1.2 m cable | Fixed 5 m cable |
Connector to Meter | Mini-DIN | Mini-DIN | Mini-DIN | Mini-DIN | Mini-DIN |
For portable meter | No | No | No | No | No |
Intelligent Sensor Management (ISM®) | No | No | No | Yes | No |
Long Cable | No | No | No | No | Yes |
Low Maintenance | Yes | Yes | Yes | Yes | Yes |
Measuring range | 0.01 – 100 mS/cm | 0.01 – 112 mS/cm | 0.001 – 500 µS/cm | 0.001 – 500 µS/cm | 0.001 – 500 µS/cm |
Parameter | Conductivity | Conductivity | Conductivity | Conductivity | Conductivity |
Presence of harsh chemicals | Yes | Yes | No | No | No |
Sample | Small samples | Small samples | Low-ion strength (pure water) | Low-ion strength (pure water) | Low-ion strength (pure water) |
Sample Conductivity | >100 uS/cm | >100 uS/cm | <=100 uS/cm | <=100 uS/cm | <=100 uS/cm |
Sensor Characteristics | Chemically robust; Temperature Probe; Premium Sensor; Analogue; Small volume | Chemically robust; Temperature Probe; For tall vessel; Premium Sensor; Analogue; Small volume | Temperature Probe; Premium Sensor; Analogue; Mechanically robust | Temperature Probe; Automatic Sensor Recognition; Premium Sensor; Calibration History Stored; Analogue; Mechanically robust | Temperature Probe; Long cable; Premium Sensor; Analogue; Mechanically robust |
Shaft Diameter | 4 mm | 6 mm | 12 mm | 12 mm | 12 mm |
Shaft Material | Glass | Glass | Stainless Steel | Stainless Steel | Stainless Steel |
Shaft length | 120 mm | 180 mm | 120 mm | 120 mm | 120 mm |
Signal type | Analog | Analog | Analog | Analog | Analog |
Temperature Probe | NTC 30 kΩ | NTC 30 kΩ | NTC 30 kΩ | NTC 30 kΩ | NTC 30 kΩ |
Temperature Range | 0 °C – 100 °C | 0 °C – 100 °C | 0 °C – 100 °C | 0 °C – 100 °C | 0 °C – 100 °C |
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ManufacturerMettler-Toledo GmbH
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Country of OriginUnited Kingdom
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Cell Constant0.80 cm-1, 0.06 cm-1, 0.1 cm-1, 0.57 cm-1, 1.0 cm-1, 0.105 cm-1
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Measuring Range0.01 – 500 mS/cm, 0.01 – 1000 mS/cm, 0.01 – 100 mS/cm, 0.01 – 112 mS/cm
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Shaft MaterialGlass, Epoxy, Stainless Steel
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SampleHigh-Ion Strength, Non -Aqueous Samples, General Purpose, Small Samples, Low-Ion Strength (Pure Water)
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ModelCond Sensor InLab® 710, Cond Probe InLab 720, InLab 725, Cond Probe InLab 731, Cond Probe InLab 731-ISM, Cond Probe InLab 731-2m, Cond probe InLab 751-4mm, Cond probe InLab 752-6mm, Cond probe InLab 741, Cond probe InLab 741-ISM, Cond probe InLab 741-5m