Rosemount 3302 Guided Wave Radar Level and Interface Transmitter
Measurement principle
Low power, nano-second microwave pulses are guided down a probe submerged in the process media. When a microwave
pulse reaches a media with a different dielectric constant, part of the energy is reflected back to the transmitter.The transmitter
uses the residual wave of the first reflection for measuring the interface level. Part of the wave, which was not reflected at the upper product surface, continues until it is reflected at the lower product surface. The speed of this wave depends fully on the dielectric constant of the upper product.
The time difference between the transmitted and the reflected pulse is converted into a distance, and the total level or interface
level is then calculated. The reflection intensity depends on the dielectric constant of the product. The higher the dielectric
constant value, the stronger the reflection.
Rosemount 3302 Guided Wave Radar Level and Interface Transmitter
Guided wave radar technology benefits
No moving parts and no re-calibration minimizes
maintenance
Direct level measurement means no compensation needed
for changing process conditions (i.e. density, conductivity,
temperature, and pressure)
Handles vapor and turbulence well
Suitable for small tanks, difficult tank geometry, and
interfering obstacles
Allows for easy upgrade
Top down installation minimizes risk for leakages
Rosemount 3302 Guided Wave Radar Level and Interface Transmitter
Proven high reliability increases uptime
First 2-wire level and interface transmitter with field proven
reliability
More than 90,000 units installed
Advanced signal processing for reliable measurement
Accurate level unaffected by changing process conditions
High application flexibility
Suitable for most liquid storage and monitoring level and
interface applications
A wide selection of process connections and probe styles
Remote mounting, mounting bracket, Smart Wireless
THUM
Adapter, HART
Tri-Loop, and probe centering
discs accessories
External mounting using Rosemount 9901 high quality
chambers accessories
Robust design reduces costs and increases safety
Leakage prevention and reliable performance under
challenging conditions
Detachable transmitter head allows tank to remain sealed
Dual Compartment housing separates cable connections and
electronics
Rosemount 3302 Guided Wave Radar Level and Interface Transmitter
Easy installation and plant integration
Seamless system integration with HART, Modbus, or IEC
62591 (WirelessHART) with the THUM adapter
Allows for easy swap by matching existing tank connections
Cut-to-fit probes
Rosemount 3302 Guided Wave Radar Level and Interface Transmitter
Long lengths of rigid probes for robust measurements
becomes cost-effective and practical to ship, store and install
with the segmented probe option (code 4S)
Pre-configured or user-friendly configuration with wizard,
autoconnect, dielectric calculator, and on-line help
MultiVariable – measures simultaneously level and interface,
resulting in fewer process penetrations and reduces
installation and wiring cost
Rosemount 3302 Guided Wave Radar Level and Interface Transmitter
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