Product overview
The KRAL OMG-032 is a precision volumetric flowmeter for continuously measuring clean, lubricating and non-abrasive liquids. Two precision measuring screws rotate as liquid passes through the meter, producing electrical pulses proportional to the actual liquid volume.
It is widely used for marine fuel-consumption measurement because its accuracy is largely independent of flow profile and it can measure low- and high-viscosity liquids. Official KRAL flowmeter range.
Technical specifications
| Specification | Details |
|---|---|
| Measurement principle | Positive-displacement screw meter |
| Nominal diameter | DN25 or DN32 |
| Nominal connection | Approximately 1 inch |
| Minimum flow rate | 60 litres/hour |
| Nominal flow rate | 6,000 litres/hour |
| Maximum flow rate | 9,000 litres/hour |
| Flow range | 1–150 litres/minute |
| Maximum operating pressure | Up to 250 bar |
| Temperature range | Configuration-dependent; options up to approximately 200°C |
| Accuracy | Up to ±0.1% of measured value |
| Repeatability | Better than approximately ±0.01% |
| Measured media | Clean, lubricating and non-abrasive liquids |
| Installation position | Multiple orientations possible |
| Output | Pulse signals through installed pickup sensor |
| Overall length with DIN flange | Approximately 255 or 265 mm |
| Approximate weight | 13 or 15 kg, depending on flange |
| Marine approval | DNV type approval available |
Specifications depend on the pressure rating, flange standard, material, pickup and temperature configuration. KRAL OMG technical information.
Main features
- High-accuracy volumetric measurement
- Excellent measurement repeatability
- Wide flow-measurement range
- Suitable for low- and high-viscosity liquids
- Low pressure loss
- Smooth and quiet screw operation
- Responds quickly to changes and pulsating flow
- No straight inlet or outlet pipe runs normally required
- Robust construction for vibration-prone environments
- Multiple pulse-pickup options
- DNV marine type approval available
- Suitable for differential fuel-consumption systems
Marine and industrial applications
- Main-engine fuel-consumption monitoring
- Auxiliary-engine fuel measurement
- Boiler fuel-consumption measurement
- Fuel transfer and bunkering systems
- Lubricating-oil measurement
- Hydraulic-oil measurement
- Marine diesel oil and heavy fuel oil
- Test benches
- Burner systems
- Chemical dosing systems
- Pump-performance monitoring
- Engine-efficiency and emissions reporting
Typical fuel-consumption arrangement
Two OMG flowmeters can be installed as a differential-measurement system:
- One flowmeter measures fuel supplied to the engine.
- A second flowmeter measures unused fuel returned from the engine.
- The electronic processor subtracts the return flow from the supply flow.
- The resulting value represents the engine’s actual fuel consumption.
Temperature sensors may also be used for volume compensation and improved consumption calculations.
Compatible electronics and accessories
- KRAL BEM 300 display and processing unit
- KRAL BEM 500 display and processing unit
- Pulse pickup sensors
- Temperature sensors
- Differential-measurement software
- Mounting kits
- Connection flanges
- Calibration certificates
Electronics, pickups and temperature sensors must be specified separately unless explicitly included in the quotation.
