Description
KRAL OMS
For low or high viscosity media.
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The KRAL OMS flow meter is specifically designed in stainless steel for applications involving low and high viscosity media, including chemicals, resins, paints, and adhesives, and where a (low) to extremely low pressure drop is required. Thanks to its high resolution and accuracy, this meter delivers a stable signal even at low flow rates for optimal process control.
Specifications
| Technical Data | ||||
|---|---|---|---|---|
| Property | OMS-020 (Low viscosity) | OMS-032 (Low viscosity) | OMS-052 (Low viscosity) | OMS-020 (High viscosity) |
| Nominal diameter | ¾ inch | 1 inch | 1½ inch | ¾ inch |
| Flow rate (l/min) | Qmax: 45, Qnom: 30, Qmin: 0.6 * | Qmax: 150, Qnom: 100, Qmin: 2.0 * | Qmax: 525, Qnom: 350, Qmin: 7.0 * | Qmax: –, Qnom: 10, Qmin: 0.04 |
| Maximum pressure | 185 bar | 185 bar | 120 bar | 400 bar |
| Temperature | -20 to +150 °C | -20 to +150 °C | -20 to +150 °C | -20 to +80 °C |
| Viscosity | 1 to 10² mm²/s | 1 to 10² mm²/s | 1 to 10² mm²/s | 10² to 10⁶ mm²/s |
| Measurement accuracy | ±0.1 % * | ±0.1 % * | ±0.1 % * | ±0.5 % |
| K-factor | 1,280 P/l | 468 P/l | 142 P/l | 66,000 P/l |
| Frequency at Qnom | 640 Hz | 780 Hz | 828 Hz | 11,000 Hz |
| Materials | ||||
| Housing | Stainless steel | |||
| Screws | Stainless steel | Stainless steel (coated for high viscosity) | ||
| Bearings | Ball or sleeve bearings | |||
| Seal with ball bearings | Viton® | |||
| Seal with sleeve bearings | Teflon® | |||
Product Overview
The KRAL OMS flow meter offers high accuracy and extreme precision when measuring liquids, even at very low flow rates. The meter is highly robust and durable in stainless steel for use in harsh industrial environments. The flow meter can handle liquids with varying viscosities, from thin to highly viscous substances such as greases or adhesives. This meter can rotate very slowly while still generating a reliable signal for signal processing, such as PID control.
The fast response time makes the instrument suitable for applications where rapid and accurate measurements are essential. The meter has a long service life, often requires little maintenance, and remains reliable over the long term.
Application(s)
Precision Dosing and Mixing
The OMS series excels in applications where extreme accuracy is required, even at low flow rates and high viscosity. Due to its high precision and measuring principle (positive displacement), the OMS is ideal for the accurate addition and mixing of components. For example: Dosing resins, lacquers, paints, and adhesives in the chemical industry and coating processes.
Water and Volumetric Measurements
The stainless steel construction makes the OMS suitable for measuring various media, including water. While screw spindle meters are often associated with oils, the materials make this series suitable for volumetric water measurements and other chemically neutral liquids.
Harsh Industrial Conditions and Marine
The robust, stainless steel design ensures the instrument performs well in demanding environments. It is resistant to high system pressures and temperature fluctuations and is widely used for measuring fuels and lubricants. Applications include measuring fuel consumption (such as diesel and heavy fuel oil) on ships and in industrial burner systems, where exact consumption monitoring is crucial for cost savings and emission control.
