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KROHNE
KROHNE H250-RR Variable Area Flow Meter
Quote on request
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H250/RR all-metal VA: ±1.6%; 10:1 (100:1 opt); to 400 °C / ~1000 barg. RFQ.
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RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Accuracy
±1.6% of measured value (VDI/VDE 3513-2, qG=50%); optional precision calibration
Measuring Principle
Variable area (float) — all-metal H250 with M40 indicator
Variant
H250/RR low-flow cone/float combinations (DN15 / 1/2")
Turndown
10:1 standard; optional 100:1
Process Temperature
Up to −196…+400 °C depending on configuration / modules
Process Pressure
Up to ~1000 barg / 14500 psig depending on design
Fits all-metal variable-area flow where you need a KROHNE H250/RR low-flow cone with M40 indicator—±1.6% of measured value class and process temperatures to −196…+400 °C depending on configuration.
Key advantages
- Principle — Variable area (float); all-metal H250 with M40 indicator
- Variant — H250/RR low-flow cone/float (DN15 / ½")
- Accuracy — ±1.6% MV (VDI/VDE 3513-2, qG=50%); optional precision cal
- Turndown — 10:1 standard; optional 100:1
- Process — To −196…+400 °C; pressure to ~1000 barg class (design dependent)
Typical applications
- Clean liquid / gas low-flow indication.
- High-T / high-P metal VA services.
- Purge and sample lines needing metal tubes.
Selection guide
- Float / cone for fluid
- Indicator / switches / 4–20 mA
- Material / gasket
- Turndown option
Common mistakes
- Using on abrasive slurries.
- Ignoring density/viscosity vs float sizing.
- Skipping optional precision calibration when ±1.6% is not enough.
When to RFQ / what to tell us
- Fluid, flow, T/P.
- Materials, outputs, quantity, ship-to.
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Specs
| Spec | Value |
|---|---|
| SKU | 33899 |
| Brand | KROHNE |
| Model | H250-RR Variable Area Flow Meter |
| Product type | Variable Area Flow Meter |
| Measuring principle | Variable area (float) — all-metal H250 with M40 indicator |
| Variant | H250/RR low-flow cone/float combinations (DN15 / 1/2") |
| Medium | Clean liquids and gases (non-abrasive) |
| Accuracy | ±1.6% of measured value (VDI/VDE 3513-2, qG=50%); optional precision calibration |
| Turndown | 10:1 standard; optional 100:1 |
| Process temperature | Up to −196…+400 °C depending on configuration / modules |
| Process pressure | Up to ~1000 barg / 14500 psig depending on design |
Documents
FAQ
Q: Accuracy? A: ±1.6% of measured value class (VDI/VDE 3513-2).
Q: Turndown? A: 10:1 standard; optional 100:1.
Q: What should I send for a quote? A: Fluid/flow/T/P, materials, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Accuracy | ±1.6% of measured value (VDI/VDE 3513-2, qG=50%); optional precision calibration |
| Measuring Principle | Variable area (float) — all-metal H250 with M40 indicator |
| Variant | H250/RR low-flow cone/float combinations (DN15 / 1/2") |
| Turndown | 10:1 standard; optional 100:1 |
| Process Temperature | Up to −196…+400 °C depending on configuration / modules |
| Process Pressure | Up to ~1000 barg / 14500 psig depending on design |
| Connections | Flange DN15…150 / ½…6"; also NPT, G, hygienic |
| Outputs Modules | Mechanical indicator; optional NAMUR/reed limits, 4…20 mA HART, FF/PA, totalizer LCD |
| Protection | IP66/IP68 / NEMA 4X/6; optional IP69K |
| Ex | Universal Ex concept (Ex i / Ex d / Ex t / Ex nA) |
| Application | Low-flow liquid/gas process measurement without auxiliary power |