krohne H250 M8
- Measurement: Variable area float
- Installation: Compact, space-saving design
- Features: Mechanical or electronic indicator
- Approvals: Certified for hazardous areas
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Description
Compact Flowmeter for Limited Spaces
The H250 M8 is a compact variable area (VA) flowmeter engineered for reliable flow measurement of liquids and gases in applications where space is a constraint. It combines the simplicity of a mechanical flow measurement with the option for an electronic bargraph indicator and a 4-20 mA output. Its space-saving design makes it a highly suitable and cost-effective solution for installation in tight spaces or on skids and compact equipment. Available in two versions, the H250 M8E features non-contact magnetic sensors for accurate float position detection and a linear analog output, while the H250 M8M is a fully mechanical version that operates without any auxiliary power. This versatility, from a simple, unpowered indicator to a digitally integrated device, ensures it can meet a wide variety of requirements. The robust PPS housing, with an optional stainless steel version, provides durability in various industrial environments.
Functionality with or without Auxiliary Power
The H250 M8’s dual-version design offers a unique blend of functionality and operational independence. The H250 M8M version operates entirely without auxiliary power, providing a simple, reliable mechanical indication of flow and offering the option for two mechanical limit switches. This feature is particularly valuable in remote locations or for safety applications where power loss is a concern. The H250 M8E version, on the other hand, utilizes advanced magnetic sensors to transmit a linear analog signal (4-20 mA) in 2-wire technology, allowing for seamless integration into a plant’s control system. Both versions display the flow value on a clear scale. This choice between a purely mechanical or a smart electronic device provides unparalleled flexibility, allowing users to select the exact functionality they need without over-investing in unnecessary features. This modular approach is a hallmark of the H250 family.
Built for Safety and Durability
Safety and durability are core components of the H250 M8’s design. The meter holds approvals for use in hazardous areas, including ATEX, IECEx, and cQPSus certifications, making it a reliable choice for explosive atmospheres. It is also rated for use in Safety Instrumented Systems (SIL 2), demonstrating its high level of integrity for critical safety applications. The meter’s robust construction from materials like austenitic stainless steel and various alloys (including Hastelloy®, Monel®, and Titanium) ensures its resistance to corrosive media, thereby extending its operational life. The standard PPS housing and optional stainless steel housing provide robust protection against external elements, supported by a high ingress protection rating of IP66/67. This combination of safety certifications and a durable build makes the H250 M8 a trusted device for a wide range of challenging industrial processes.
Specific Applications Across Diverse Industries
The H250 M8 is an ideal flowmeter for a variety of specific applications due to its compact size and versatile functionality. It excels in:
- Chemical Dosing Systems: Its small footprint and accuracy make it perfect for dosing chemicals and additives in water treatment, agriculture, or manufacturing.
- Laboratory and Research: It is used for measuring the flow of liquids and gases in laboratory setups where precision and a compact design are required.
- Lubrication Systems: The H250 M8 is ideal for monitoring the flow of lubricating oils to machinery, ensuring that vital components are properly lubricated and preventing costly breakdowns.
- Medical Equipment: Due to its hygienic connection options, it can be used for measuring the flow of gases in medical devices or for dosing fluids in pharmaceutical production.
- OEM Applications: As a compact and highly reliable meter, the H250 M8 is a popular choice for Original Equipment Manufacturers (OEMs) to integrate into their machinery and skids, offering a ready-to-use flow measurement solution.
- Food and Beverage: With the appropriate hygienic connections, it is used for measuring the flow of cleaning solutions (e.g., in a CIP system) or for other non-sanitary liquid and gas applications.
Space-Saving Design and Versatile Connections
The H250 M8 is specifically designed for space-constrained environments. Its compact size allows for easy and unobtrusive installation, a crucial factor in many industrial plants where every inch of space is valuable. This makes it a perfect fit for machine skids, utility panels, and other installations with limited room. The meter also comes with a wide range of process connections, including flanges (DN15-50 / ½-2″), NPT and G threads, and various hygienic connections (Tri-Clamp, DIN, SMS). This extensive selection ensures that the H250 M8 can be easily integrated into virtually any existing piping system without major modifications. The meter’s versatility and compact nature make it an indispensable tool for engineers looking to optimize their designs and improve operational efficiency.
Global Authenticity and Quality Assurance
When it comes to purchasing industrial equipment, authenticity and quality are paramount. We are proud to highlight that the online store tpt24 is the premier global retailer for the H250 M8. tpt24 is committed to providing a superior purchasing experience, backed by an unwavering guarantee of authenticity and quality for every H250 M8 sold. This commitment ensures that customers in any country can confidently acquire a genuine product that adheres to the highest standards of engineering and performance. With a robust global delivery network, tpt24 ensures that your H250 M8 is delivered swiftly and securely, regardless of your geographical location. This partnership ensures that this essential technology is readily accessible to professionals across the globe, supported by a brand renowned for its trustworthiness.
Cost-Effective and Highly Reliable Measurement
The H250 M8 is a cost-effective solution without compromising on reliability. Its straightforward design and choice between mechanical and electronic versions make it an economical option for a variety of projects. The meter’s full-scale value range for liquids (10 to 6,300 l/h) and gases (0.7 to 180 m³/h) and a turndown ratio of 10:1 provide excellent performance for most standard applications. The maximum measuring error of ±2.5% (according to VDI/VDE 3513-2) is more than sufficient for general flow control and monitoring. Its rugged construction and minimal maintenance requirements translate to a low total cost of ownership over the meter’s lifetime. The H250 M8 is a smart investment for businesses seeking a reliable, affordable, and accurate flow measurement solution.
The Future of Compact Flow Measurement
The H250 M8 represents a forward-thinking approach to compact flow measurement, offering a solution that is both highly accurate and incredibly versatile. By combining the simplicity of a variable area flowmeter with a compact design and optional electronic outputs, it provides a powerful tool for a wide range of applications. It addresses the key pain points of traditional meters—large footprint, complex installation, and high cost—while offering a reliable and cost-effective alternative. The H250 M8 is more than just a measurement device; it is a strategic asset for companies seeking to optimize their operations, enhance safety, and ensure the long-term integrity of their processes. It is a testament to how innovative design can transform a fundamental industrial task, paving the way for smarter and more efficient operations in a variety of critical sectors.
Specifications
Specifications
Depending on selected device configuration
General information
| Product type | Flowmeter |
| Product family name | H250 |
| Product positioning | For liquids and gases |
| Measurement principle | Variable area float |
| Measured media | Liquids, Gases |
Operating conditions
| Process pressure | max. 145 barg/ 2102 psig |
| Process temperature | -40…+200°C/ -40…+392°F |
Materials
| Measuring tube | Austenitic stainless steel (1.4404/316L), Austenitic alloy (2.4610/Alloy C4), Nickel alloy (2.4360/Alloy 400), Titanium alloy (3.7035/Ti-Grade 2), Nickel-chrome-molybdenum-tungsten alloy (2.4819/Alloy C276), Nickel-chromium-molybdenum-niobium alloy (2.4856/Alloy 625), Austenitic stainless steel (1.4547/6Mo) |
| Gaskets | None |
| Process connection | Austenitic stainless steel (1.4404/316L), Nickel alloy (2.4360/Alloy 400), Austenitic alloy (2.4610/Alloy C4), Nickel-chrome-molybdenum-tungsten alloy (2.4819/Alloy C276), Nickel-chromium-molybdenum-niobium alloy (2.4856/Alloy 625), Titanium alloy (3.7035/Ti-Grade 2), Austenitic stainless steel (1.4547/6Mo) |
Process connections
| Flange connections | EN (1092-1): DN15…50 ASME (B 16.5): ½…2″ JIS (B 2220): 15…150A |
| Thread connections | Female: G½, G¾, G1 ½ NPT, ¾ NPT, 1 NPT |
| Hygienic connections | Clamp (DIN 32676): DN15, DN25, DN32, DN40, DN50, DN80 Clamp (ISO 2852): 25, 40, 51, 76.1 Tri-Clamp: ½”, 1″, 2″ Threaded ferrule (DIN 11851): DN15, DN25, DN40, DN50, DN80 Flange with groove (DIN 11864-2): DN15, DN25, DN50, DN80 Threaded ferrule (SMS 1146): 25 mm, 51 mm, 76 mm |
Approvals/Standards
| Certificates/Approvals Ex | ATEX, cQPSus, IECEx, NEPSI, EAC Ex |
| Certificates/Approvals Safety | SIL 2 |
Communication
| Analogue outputs | 4…20 mA |
| Discrete outputs | Limit switches |
| Digital outputs | HART® |











