Description
KRAL OME
flow meter for fuel & gas oil
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This KRAL OME has been specially developed for the precise flow measurement of chemically neutral, lubricating, clean, non-abrasive liquids and features high accuracy as standard. Consequently, the flow meter is particularly suitable for fuel consumption measurement in diesel engines, but also measures light oil products such as gasoline.
Specifications
| Technical Data | ||||
|---|---|---|---|---|
| Property | OME-13 | OME-20 | OME-32 | OME-52 |
| Nominal diameter | DN 15 mm (½ inch) | DN 20 mm (¾ inch) | DN 25/32 mm (1 inch) | DN 40 mm (1½ inch) |
| Total length with DIN flange | 105 mm | 135 mm | 185 mm | 325 mm |
| Weight with DIN flange | 2 kg | 2 kg | 4 kg | 12 kg |
| Flow rate (l/h) | Qmax: 900, Qnom: 600, Qmin: 6 | Qmax: 2,700, Qnom: 1,800, Qmin: 18 | Qmax: 9,000, Qnom: 6,000, Qmin: 60 | Qmax: 31,500, Qnom: 21,000, Qmin: 210 |
| Flow rate (l/min) | Qmax: 15, Qnom: 10, Qmin: 0.1 | Qmax: 45, Qnom: 30, Qmin: 0.3 | Qmax: 150, Qnom: 100, Qmin: 1.0 | Qmax: 525, Qnom: 350, Qmin: 3.5 |
| Maximum pressure | 40 bar | 40 bar | 40 bar | 40 bar |
| Temperature | -20 to +125 °C | -20 to +125 °C | -20 to +125 °C | -20 to +125 °C |
| Viscosity | 1 to 1x10⁶ mm²/s | 1 to 1x10⁶ mm²/s | 1 to 1x10⁶ mm²/s | 1 to 1x10⁶ mm²/s |
| Measurement accuracy | ±0.1 % | ±0.1 % | ±0.1 % | ±0.1 % |
| Repeatability | ±0.01 % | ±0.01 % | ±0.01 % | ±0.01 % |
| K-factor | 1,214.0 P/l | 321.0 P/l | 78.0 P/l | 17.73 P/l |
| Frequency at Qnom | 202 Hz | 161 Hz | 130 Hz | 104 Hz |
| Sensors | ||||
| Sensor models | BEG 47C, BEG 60A-62A* | |||
| Application | Hazardous area / Ex-range (BEG 47C), Standard compact version (BEG 60A-62A*) | |||
| K-factor | K1 (both sensors) | |||
| Signal | Namur (BEG 47C), Push-Pull (BEG 60A-62A*) | |||
| Temperature | -25 to +100 °C (BEG 47C), -40 to +125 °C (BEG 60A-62A*) | |||
| Maximum pressure | 40 bar (both sensors) | |||
Certification(s)
Communication
Product Overview
The KRAL OME flow meter is manufactured from high-grade aluminum, making it suitable for most types of oil and fuel. The KRAL screw spindle has a very low pressure drop and handles rapid, short fluctuations in flow caused by pulsations without difficulty. The OME meter is very robust and, thanks to its compact design, easy to install in piping systems. No straight pipe sections are required before or after the meter.
KRAL supplies the OME compact series as standard with an advanced combination of 2 pulse pickups and a PT100 temperature sensor. This unique sensor unit allows the KRAL OME compact meter to detect flow direction while simultaneously measuring the liquid temperature to actively correct for the expansion coefficient. Intercontrol provides advanced flow computers for this purpose.
- Excellent measurement accuracy even in demanding applications.
- Robust and maintenance-free (Stainless Steel)
- Flexible installation, easy to integrate
- Advanced communication and data output (Modbus and HART)
- Complies with strict international standards
High Accuracy
Offers laboratory measurement accuracy of over a wide flow and viscosity range (up to 1:150 turn-down ratio), which is essential for critical applications such as fuel consumption and test benches.
Wide Viscosity Range
Capable of measuring liquids with a viscosity from 1 to 1 million mm²/s (1 to 1,000,000 cSt).
Compact 3-in-1 Design
The OME can detect flow direction while simultaneously measuring the liquid temperature in a single sensor unit. This is unique and helps in correcting the expansion coefficient for even more precise measurements.
Robust and Maintenance-Free
Built with durable materials (often aluminum housing, nitrided steel screws, FKM seals) for a long service life and minimal maintenance requirements.
Flexible Installation
Requires no straight pipe runs before or after the meter, simplifying installation and saving space in compact systems or skids.
Communication
Provides standard signal outputs (e.g., Namur, Push-Pull) and can be integrated with advanced flow computers for data output and correction.
Application(s)
Fuel Consumption Measurement in Diesel Engines
This is one of the primary application areas. The OME has been specially developed for the accurate measurement of fuel consumption in diesel engines, both in industrial machinery and smaller vessels (e.g., fishing vessels, inland waterway craft). The ability to detect flow direction and measure temperature (for expansion coefficient compensation) is a major advantage. Also suitable for measuring light oil products such as gasoline.
Oil Measurement
General measurement of various types of oils in machines, systems, and production processes. This can range from lubricating oils to hydraulic oils.
Test Benches for Engines and Components
Due to its excellent measurement accuracy over a wide range, the OME is highly suitable for use on test benches, for example for engines, fuel pumps, or other automotive parts where precise liquid measurement is essential for performance evaluation.
Calibration of Other Flow Meters
The high accuracy of the OME makes it a suitable reference meter for calibrating other flow meters.
Dosing and Blending (Mixing Processes)
For applications where precise dosing of liquids (such as additives, dyes, or components in mixtures) is required. This occurs in various industries where liquids must be accurately blended.
