SITRANS LG250
The SITRANS LG250 from Siemens is a radar particularly well-suited for level and interface measurement in the chemical, petrochemical, power, and general industries. It is a flexible solution that can be used in tanks, media separation, and ammonia applications.
The LG250 gives you several benefits:
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The SITRANS LG250 is a state-of-the-art guided microwave radar level sensor, meticulously designed to excel in challenging industrial environments.
With its ability to handle aggressive liquids and complex media conditions, the LG250 is perfect for applications in the chemical, petrochemical, power, and general industries. Utilizing guided wave technology, it provides precise level and interface measurement even in the presence of foam, steam, and media buildup.
Capable of measuring levels up to 75 meters, it operates efficiently under extreme temperature and pressure conditions, making it a versatile choice for a variety of storage and processing applications.
The LG250 series has several benefits, some of which we have listed for you below:
The SITRANS LG250 is engineered to excel in various industrial applications, providing reliable level and interface measurement in challenging environments. Its guided microwave radar technology is particularly effective in handling aggressive liquids and difficult process conditions, making it an ideal choice for industries such as chemical, petrochemical, and power generation. The LG250's flexibility allows it to be utilized in storage tanks, media separation processes, and even ammonia applications, ensuring accurate and consistent performance. With the capability to measure up to 75 meters, along with its resilience to factors like foam formation, steam, and media buildup, the LG250 is well-suited for a wide range of operational settings, delivering precision and dependability in every measurement.
Key Applications:
The flexibility of the SITRANS LG250 extends beyond its robust design, as it can be tailored to meet specific application requirements. With options for cable or rod probes, the LG250 is suitable for a wide range of liquid measurement scenarios, ensuring reliable performance whether in storage tanks or during media separation processes.
Its advanced diagnostic features provide a high level of safety and reliability, while a simple, menu-driven display allows for easy setup and operation. The LG250’s modular design ensures straightforward maintenance, and its resistance to media buildup makes it an ideal solution for industries where product consistency and accuracy are paramount.
By choosing the SITRANS LG250, customers can count on precise measurements and enhanced operational efficiency across their applications.
The SITRANS LG250 is a highly effective level sensor designed for continuous level and interface measurement in liquid applications. Utilizing guided high-frequency microwave pulses, the sensor operates by directing these impulses along a steel cable or rod. When the pulses reach the product surface, they reflect back to the sensor, which calculates the running time and outputs the level measurement. For accurate interface detection, the LG250 requires specific conditions for the upper medium, including a non-conductive composition with a minimum dielectric constant of 1.6. The upper medium must also be stable, homogeneous, and free from stratification or foam. Meanwhile, the lower medium should have a dielectric constant at least 10 times greater than that of the upper medium. The sensor is preset for level measurement but allows for customizable output settings for interface measurement, making it a versatile tool in various industrial environments.
Proper installation of the SITRANS LG250 is crucial for ensuring accurate level and interface measurements. It is essential to mount the sensor at least 300 mm (12 in) away from vessel installations or walls, and 500 mm (19.7 in) for non-metallic vessels, to prevent interference during operation. In conical-bottom vessels, centering the sensor can enhance measurement accuracy down to the lowest point. For plastic or glass vessels, using a metallic surface, such as a flange or a metal sheet beneath the fitting, is necessary to enable effective microwave signal transmission. Additionally, avoiding the use of sockets when possible will help maintain measurement precision. Care should be taken to ensure the probe does not touch any vessel walls and that any bends in the cable are minimized, as these factors can lead to measurement errors. Following these installation guidelines will help maximize the performance of the SITRANS LG250 in various applications.
The SITRANS LG series from Siemens offers a comprehensive range of guided wave radar transmitters tailored for different industrial needs, providing solutions for level, interface, and volume measurement across various applications. Each model is designed to meet specific process requirements, ensuring reliable performance even under challenging conditions.
SITRANS LG240:
SITRANS LG250:
SITRANS LG260:
SITRANS LG270:
Each model in the SITRANS LG series is tailored to handle the unique challenges of its target application, offering versatility and reliability in demanding industrial processes.
Guided wave radar for level and interface measurement in liquids with low DK value. It is particularly well-suited for level measurements in bypass or stilling wells and in hygienic liquid applications.
The radar is particularly well-suited for level and interface measurement in the chemical, petrochemical, power, and general industries. It is a flexible solution that can be used in tanks, media separation, and ammonia applications.
The radar is particularly well-suited for level measurement of solids in the cement, power, food, mineral, mining and maritime industries. It can be used for materials such as grain, plastic, coal, fly ash, and cement. The LG260 is available with a rod or cable and can measure up to 60 m, at temperatures between -40...+200 °C and up to 40 bar.
The radar is particularly well-suited for level and interface measurement of liquids under extreme conditions in the chemical, petrochemical, power, general and maritime industries. It can be used for aggressive media in tanks with agitators, vapors, high temperature, high pressure, and low dielectric constant. The LG270 can measure up to 60 m, at temperatures between -196...+450 °C and up to 400 bar.
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| Measuring range - Distance | 75 m |
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| Process temperature | -40...+200 °C |
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| Process pressure | -1...+100 bar |
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| Accuracy | ± 2 mm |
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| Ambient temperature | -40...+80 °C |
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See the datasheet for more information |
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| Process connections | Thread and flange See the datasheet for more information |
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