Krohne Radar level transmitters / OPTIFLEX 1100 C

 VF2541A522100 - (Continuous level measurement of liquids and solids)

The OPTIFLEX 1100 uses Time Domain Reflectometry (TDR) technology to measure liquid and solid levels by transmitting low-intensity electromagnetic pulses along a guided probe. The pulse reflects off the product's surface, and the device measures the time it takes for the reflected signal to return. This time is converted into a continuous 4-20 mA output, with no effect from dust, foam, vapor, or changes in product properties like dielectric constant, density, or conductivity.

How the OPTIFLEX 1100 Works

1. Pulse Transmission: The OPTIFLEX 1100 emits short, low-intensity electromagnetic pulses at the speed of light along its rigid or flexible probe.
2. Reflection: When the pulse reaches the surface of the liquid or solid, it reflects back with an intensity dependent on the product's dielectric constant.
3. Time Measurement: The device measures the time elapsed between transmitting the pulse and receiving the reflected signal.
4. Distance Calculation: Half of this measured time directly corresponds to the distance from the device's reference point to the product's surface.
5. Signal Output: This distance is then converted into a 4-20 mA current output and/or a digital signal.

Key Advantages

• Time Domain Reflectometry (TDR):  A proven technology for continuous level measurement.
• Accuracy and Reliability: Provides accurate measurements even with dust, foam, vapor, and agitation on the surface.
• Non-Sensitive to Product Properties: Unlike traditional level transmitters, it's unaffected by changes in the product's dielectric constant, density, or conductivity.
• Quick Setup: Features an intuitive, five-step setup process.
• Robust Design: No moving parts or fragile components, leading to increased durability.
  Installation Flexibility: Can be mounted on a tank or in a bypass chamber and offers three probe types.

 Full Datasheet

Transmitter & Antenna Feature  

• Manufacturer :  Krohne - OPTIFLEX 1100
• Product No. :   VF2541A522100
• VF25  - OPTIFLEX 1100 C 2-wire loop-powered 4...20 mA Guided Radar (TDR) level meter: -50...+100°C and -1...16 barg / -58...212°F and -14.5...232 psig
• Special number : 4  Special manufacture
• Housing material: 1  - Aluminium
• Probe type / probe length (probe material): A - Coaxial; 1 segment; length <730 mm / 29¨ (St. steel 316L/1.4404)
• Process connection: 5 - ¾ NPT (ASME B1.20.1)
• Cable entry / cable gland: 2  - ½ NPT (Brass) / without
• Display: 2 - With an integrated display
• Display language (English is supplied with all devices): 1 - English
• Output: 0 - wire / 4...20 mA passive HART

There are several Model of pressure transmitters, for more details read the PDF below 

Basic Ordering Information Transmitter