Conductivity sensor LR325/01 - New

LR325/01 Conductivity Sensor – Precision and Durability for Reliable Measurement

The LR325/01 conductivity sensor by WTW is a robust and highly accurate measurement instrument engineered to provide precise conductivity readings in both laboratory and industrial settings. Designed with the latest technology, the LR325/01 utilizes a two-electrode measurement principle, offering superior performance across a wide range of applications. The sensor’s construction includes high-quality materials and smart design features that ensure long-lasting durability even under harsh conditions.

At the heart of the LR325/01 is its two-electrode system, which facilitates accurate conductivity measurement through a cell constant of 0.100 cm⁻¹ with a tolerance of ±2%. This design ensures excellent linearity and accuracy across the measuring range of 0.001 µS/cm to 200 µS/cm, making it ideal for applications that require precision, such as water quality monitoring, chemical processing, and laboratory research. The sensor’s measuring range can be further optimized depending on the capabilities of the connected meter, allowing for tailored configurations to meet specific user requirements.

The LR325/01 is equipped with an integrated NTC 30 (30 kΩ at 25°C) temperature sensor, which provides automatic temperature compensation, ensuring that conductivity readings remain consistent and reliable regardless of temperature fluctuations. The temperature range for this sensor is -5°C to 80°C, and it can withstand up to 100°C for the sensor shaft, making it suitable for various temperature-sensitive applications. The precision of the temperature sensor is ±0.2K, with a response time (t99) of less than 20 seconds, ensuring quick stabilization for accurate readings.

Built for endurance, the LR325/01 features a shaft made from epoxy and stainless steel (grade 1.4571), ensuring resistance to chemical exposure and mechanical stress. The connection head is constructed from POM (polyoxymethylene), providing additional durability. The sensor’s stainless steel conductivity electrodes guarantee long-lasting performance and stable measurement results. The sensor’s rugged design is complemented by a flexible 1.5-meter cable with an 8-pin socket plug, which offers reliable connections while allowing ease of use in various setups.

To ensure adaptability in challenging environments, the LR325/01 carries an IP68 rating for immersion protection up to 2 x 10⁵ Pa (2 bar), ensuring the sensor remains operational in wet and demanding conditions. When plugged in, the sensor maintains an IP67 rating, providing protection against dust and temporary water immersion. Additionally, the sensor can be fully immersed, with a minimum immersion depth of 30 mm and a maximum depth extending up to the full length of the sensor and cable at 80°C. The sensor shaft alone can be used up to 100°C for applications requiring higher temperature exposure.

The LR325/01 meets the requirements of the 97/23/EC directive for pressure equipment, underscoring its compliance with safety and quality standards. Its minimum bend radius specifications (80 mm for permanent bends and 50 mm for short-term bends) add to the versatility and durability, enabling flexible deployment in various installation scenarios.

This sensor is not only engineered for reliability and accuracy but also for user convenience, making it an ideal choice for users in scientific research, industrial processing, or environmental monitoring who require a dependable conductivity sensor.

• Measuring Principle: Two-electrode measurement
• Cell Constant: 0.100 cm⁻¹ ±2%
• Temperature Sensor: Integrated NTC 30 (30 kΩ at 25°C)
• Weight: Approximately 135 g
• Shaft Material: Epoxy
• Connection Head: POM
• Conductivity Electrodes: Stainless steel (1.4571)
• Thermistor Enclosure: Stainless steel (1.4571)
• Cable Length: 1.5 m
• Diameter: 6 mm
• Minimum Bend Radius: 80 mm (permanent), 50 mm (short-term)
• Plug Type: Closed plug connection
• Cable Plug: 8-pin socket
• Protection Rating: IP68 (2 bar), IP67 (when plugged in)
• Conductivity Measuring Range: 0.001 µS/cm to 200 µS/cm
• Temperature Range: -5°C to 80°C (up to 100°C for the sensor shaft)
• Overpressure Limit: 2 x 10⁵ Pa (2 bar)
• Minimum Immersion Depth: 30 mm
• Maximum Immersion Depth: Entire sensor and cable (up to 80°C), sensor shaft only up to 100°C
• Storage Temperature: 0°C to 50°C
• Temperature Response Time: t99 < 20 s
• Temperature Sensor Precision: ±0.2K