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2-Electrode and 4-Electrode Conductivity Sensors

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Product Details:

Port Size 1/2 NPT or customized as per request
Response Time 10 seconds to 90% full scale
Application Water quality analysis, industrial water, beverages, laboratory monitoring, chemical process
Automation Grade Semi-automatic or Automatic (system dependent)
Frequency 50/60Hz (transmitter dependent)
Hardness Suitable for use in hard/soft water
Humidity 095% RH, non-condensing
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2-Electrode and 4-Electrode Conductivity Sensors Product Specifications

Automation Grade Semi-automatic or Automatic (system dependent)
Frequency 50/60Hz (transmitter dependent)
Hardness Suitable for use in hard/soft water
Humidity 095% RH, non-condensing
Port Size 1/2 NPT or customized as per request
Response Time 10 seconds to 90% full scale
Application Water quality analysis, industrial water, beverages, laboratory monitoring, chemical process
Control Mode Manual or Automatic (depending on instrument)
Machine Weight 150g (sensor); 350g (cable & electronics)
Resolution 0.01 S/cm (2-electrode, low range); 0.1 S/cm (4-electrode)
Accuracy 1% of reading (standard)
Mounting Type Threaded, inline or submersible
Usage Industrial, Laboratory, Environmental monitoring
Features Automatic temperature compensation, corrosion-resistant body, high precision, replaceable cable
Measuring Range 2-Electrode: 02000 S/cm (standard); 4-Electrode: 1 S/cm to 2000 mS/cm
Temperature 070C (standard); Up to 130C (with high-temperature models)
Specimen Size Electrode Length: 60150mm; Diameter: 1025mm
Display Type LED, LCD (device dependent)
Equipment Type 2-Electrode or 4-Electrode Conductivity Sensor
Interface Type Analog (420mA), RS485 Modbus (optional)
Operating Voltage 936V DC (dependent on transmitter)
Max Height 150mm (sensor only)
Power Supply 1224V DC (external transmitter or analyzer dependent)
Number of Specimens 1 (single sensor per channel)

2-Electrode and 4-Electrode Conductivity Sensors Trade Information

Main Export Market(s) South America, Eastern Europe, Middle East, Asia, Western Europe, Central America, North America, Australia, Africa
Main Domestic Market All India

Product Description

2-Electrode and 4-Electrode Conductivity Sensors

Versatile probes for accurate chemical concentration control
2-electrode sensors specially for low conductivity and 4-electrode sensors for medium to high conductivity.
Wide range of applications
from biopharmaceutical to chemical processes
Highest accuracy at very low to medium conductivities
Compliance through certification package

Product details

Material	Stainless Steel 1.4435 (316L)
Brand	METTLER TOLEDO
Usage/Application	Laboratory Use
Color	Multi
Sensor element	Platinum and ceramic
Process temperature	-5 to 120C (140C/ 1h) 20 to 250 F ( 284F/1h)

Reliable Sensing for Diverse Water Quality Needs

Designed for challenging industrial and laboratory environments, these conductivity sensors utilize high-grade electrode materials and corrosion-free wetted parts, including PVC, CPVC, PEEK, and SS316. Their robust construction, combined with high precision and resolution, ensures accurate measurements from pure water to highly conductive process fluids. The IP67 ingress protection enables durable, consistent performance in demanding conditions.

Flexible Installation and Advanced Measurement Capabilities

With multiple mounting options such as threaded, inline, or submersible, these sensors accommodate a wide range of setups. Standard 3m cable (extendable to 10m), compatibility with analog (420mA) and RS485 Modbus outputs, and both manual and automatic operation modes ensure seamless integration into existing systems. Integrated temperature compensation and fast response times enhance measurement reliability in diverse applications.

FAQs of 2-Electrode and 4-Electrode Conductivity Sensors:

Q: How do I select between a 2-electrode and a 4-electrode conductivity sensor for my application?

A: Choose a 2-electrode sensor (K=0.1 or 1.0) for low to medium conductivity (02000 S/cm), such as laboratory or drinking water testing. Opt for a 4-electrode variant (K=0.0510.0) for processes with higher conductivity, harsh samples, or where fouling is a concern, as it offers a wider measurement range (1 S/cm to 2000 mS/cm) and improved stability.

Q: What materials are used for electrodes and wetted parts in these sensors, and why?

A: The 2-electrode models use 316 stainless steel, ideal for durability and corrosion resistance. The 4-electrode designs use platinum or graphite for broader chemical compatibility and measurement precision. Wetted parts are crafted from PVC, CPVC, PEEK, or SS316, ensuring chemical resistance for applications in water, beverages, and industrial liquids.

Q: When should manual or automatic zero calibration be performed?

A: Zero calibration may be required during initial setup, after prolonged use, or when significant measurement drift is observed. Depending on the connected transmitter or analyzer, calibration can be manual or automatic. Refer to your devices instructions to determine the exact calibration procedure and interval for optimal accuracy.

Q: Where can these conductivity sensors be installed, and what mounting options are available?

A: Sensors can be mounted using threaded (1/2 NPT), inline, or submersible methods, providing installation flexibility. They support various applications, from water treatment facilities and industrial process lines to laboratory environments, thanks to their adaptable mounting and robust IP67-rated housings.

Q: What is the typical process for cleaning and maintaining these sensors?

A: Routine maintenance includes manual or automatic cleaning of the electrodes. For systems equipped with Clean-In-Place (CIP), the sensors can be cleaned without removal, minimizing downtime. Inspect wetted surfaces periodically and follow your manufacturers cleaning schedule for reliable, long-term performance.

Q: How does the built-in temperature sensor benefit conductivity measurements?

A: The integrated NTC/PT1000 temperature sensor enables automatic temperature compensation, ensuring conductivity readings remain accurate despite temperature fluctuations between 080C. This feature is particularly beneficial for processes sensitive to temperature variations, including industrial or laboratory applications.

Q: What are the primary usage areas and benefits of these conductivity sensors?

A: These sensors are ideal for water quality analysis, industrial water treatment, beverage production, laboratory monitoring, and chemical processes. Their high accuracy (1%), rapid response, and chemical-resistant construction provide reliable, long-lasting performance in both routine monitoring and demanding process environments.

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