Microwave level gauge
The radar pulse is virtually unaffected by the contents and atmosphere of the tank, temperature or pressure. Thus radar measurement is proven to be the most reliable gauging method in most applications. Furthermore, maintenance requirements are practically zero because no part of the gauge is in physical contact with the liquid.
These features make the MRG-10 Microwave level gauge very well suited for storage and buffer tanks in the chemical and water industry.
The MRG-10 Microwave level gauge is most appropriate for calm liquid surfaces. If you intend to use the MRG-10 to measure turbulent surface liquids, it may be recommended to employ a still pipe used in order to achieve a calm surface.
Application
The Microwave level gauge MRG-10 is approp riate for storage tanks or buffer tanks that have relatively calm surfaces.
- Chemical and petroleum
- Pharmaceuticals
- Food and beverage
Other applications include:
- Industrial water such as river intake gates
- Water supply
- Sewage water treatment plant
- Hydraulic power station
Specifications
| 1. General | |
|---|---|
| Measuring principle | Time Flight impulse Radar technology |
| Operating frequency | 6 GHz |
| Half power beam angle | Rod antenna: 30deg., Cone antenna 4″: 34deg., 6″: 22deg., 8″: 17deg. |
| Microwave output power | Max 1 ? W |
| Reference conditions | Free space reflection from metal surface, ambient temperature 25?, atmospheric pressure |
| 2.Display / Configuration | |
| Local display | 5 digit LCD display with 4 configuration buttons. Level, Ullage, Volume, Current or Amplitude output |
| HART hand held communicator | Rosemount communicator RS275, just display not for configuration |
| PC Remote configuration | Windows base setup and configuration software |
| 3 Electrical | |
| Power supply | Loop powered 16-36 VDC (16-30VDC in Ex applications) |
| Output | Analog DC4-20mA +HART |
| Output variable | Level, Ullage in m or ft. Volume in %, Amplitude in dB. |
| Signal on alarm | Hold, Low (3.9mA), High (22mA) |
| Cable entry | 2-M20x1.5(Applicable Cable diameter : 6.5-9.0mm) |
| 4. Mechanical | |
| Antenna | Rod antenna, Cone antenna 4″, 6″, 8″ |
| Antenna material exposed to tank | Rod antenna: PFA and SUS(316L,ext.version) Cone antenna: 4″, 6″, 8″ SUS(316L), PTFE, Viton |
| Antenna dimension | See page 5 and 6 |
| Housing / Enclosure | Casting Aluminum |
| Flange | On request or customer supply |
| Mass | 3.3–4.3Kg, depend on antenna size |
| Height above flange | 230 mm |
| 5. Environment Condition | |
| Max. pressure | 10 bar. (145 psi) |
| Ambient temperature | -20 ? to 70 ? (-4°F to 158°F), LCD Display -20 ? to 70 ? |
| Storage temperature | -40 ? to 80 ? (-40°F to 176°F) |
| Tank inside temperature | -20 ? to 150 ? (-4°F to 302°F) |
| Ingress protection | IP65 |
| Vibration resistance | IEC 68-2-6/1G |
| Ex. Approval | TIIS Ex ia IIC T4 |
| 6 Measuring Performance | |
| Instrument accuracy | +/- 10mm |
| Repeatability | +/- 1mm |
| Update interval | 1 Second |
| Measuring range | Depend on Antenna type and products nature, see diagram at page 4 |
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