Features
The Tokyo Keiki Flat Radar Level Sensor MRF-10 is a loop-powered radar level gauge, which can be installed easily in a variety of applications. The MRF-10 employs a non-contact radar level gauging principle based on pulsed microwave signals and is suitable for level measurement in applications such as liquids, pastes and slurries.
Tokyo Keiki Flat Radar Level Sensor MRF-10 uses 5.8GHz low power pulsed microwave. It provides good measurement stability, because propagation of microwaves is less affected by change of temperature, pressure or gas conditions in tank.
- IP68 submergible
- Stormwater will not break MRF-10 by under the water.
- Compact body (Height: 54mm)
- Height: 54mm, easy installation for narrow space like under the Manhole
- Loop-Powered
- Easy replacement to existing Loop-powered instrumentations
- HART communication
- HART protocol has been superimposed onto analog output
- Easy Configuration
- Graphical PC software by HART
- Simple one-piece structure
- No independent main console required
Measuring Principle
The MRF-10 level gauge utilizes the time-of-flight measurement principle involving short microwave pulses. Installed at the top of tanks or channels, it emits short microwave pulses toward liquids or pastes. Reflected microwave signals from the surface are received by the antenna, and processed by electronics.
The time from transmission to reception is determined by the microprocessor and converted as distance from the transmitter to the liquid surface (ullage) with output of the calculated level from the measured ullage (Level = Tank Height – Ullage).
Specifications
| General | Measuring principle | Time of Flight Impulse Radar Technology | |
|---|---|---|---|
| Operating frequency | 5.8GHz | ||
| Half power beam angle | Lengthwise: 50°/ Crosswise: 23° | ||
| Display /Configuration | No display / Graphical PC Configuration available | ||
| Electrical | Power supply | Loop-powered 16 ~ 36V DC | |
| Output | Analog: 4-20mA + Digital: HART Protocol | ||
| Output variable | Level, Ullage (m or ft), Volume(%), Amplitude (dB) | ||
| Signal on alarm | Hold, Low (3.9mA), High (22mA) | ||
| Others | Arrester and 10m shielded twisted 3 – cores Cable are built-in. | ||
| Mechanical | Housing (Enclosure) | Body: Casting stainless steel (316 equivalent)/Antenna face: FRP | |
| Size | 172 x 192 x 54mm (without Cable gland) | ||
| Mass | Approx. 2.7kg (without Cable) | ||
| Environment | Ambient temperature | -20? ~ 70? (-4°F ~ 158°F) | |
| Ambient pressure | ATM | ||
| Protection degree | IEC 60529 IP68 (10m Depth /24hr.) | ||
| Measuring Performance | Accuracy | ±5mm (0.1 – 5m range) ±10mm (5 – 10m range) | |
| Repeatability | ±1mm | ||
| Update interval | 1sec | ||
| Measuring range | Up to 10m Max. Applicable circular channel: more than ?400mm | ||
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