Flowmaster 250 MK2 Data Logger is a high-accuracy portable flow and pressure test instrument with integrated data logging. Designed for hydrant testing, flushing, and minimum night flow measurement, it delivers flow rates up to 3000 LPM and pressures up to 25 bar with no moving parts. Rugged, lightweight, and easy to use on site.
The Flowmaster 250DL MK2 is a professional-grade portable flow and pressure test instrument designed for accurate, reliable field testing across a wide range of water network and fire hydrant applications. It delivers precise measurements of flow rates from 30 to 3000 litres per minute and pressures up to 25 bar, making it ideal for hydrant testing, water main flushing, trunk main conditioning, and minimum night flow analysis.
Built with an advanced electromagnetic sensor that contains no moving parts, the Flowmaster 250DL MK2 provides consistent, debris-resistant readings that are not affected by water quality or particulates. With a flowrate accuracy of up to 98% and pressure accuracy within ±1% of range, it delivers high-performance data you can trust for compliance and reporting.
This unit features a fully integrated data logger, allowing users to store and transfer flow and pressure results easily via USB. The clear, backlit 320 x 240 graphic colour display presents all measurement data in one place, simplifying on-site use. Its intuitive controls and compact form factor ensure ease of operation, while its robust aluminium housing offers long-lasting durability in harsh environments.
Powered by a rechargeable lithium-ion battery with up to 10 hours of operation, the Flowmaster 250DL MK2 is a truly portable solution for field engineers and utility professionals. A battery monitor provides a clear indication of remaining runtime, and an optional external battery pack can extend usage further. The instrument is supplied with 2.5” BS Instantaneous male/female connections, with a wide range of optional adaptors available to suit different regional standards.
From hydrant testing to flow verification and network analysis, the Flowmaster 250DL MK2 delivers dependable performance, data accuracy, and field-ready versatility in a single, compact unit.
The Flowmaster 250DL MK2 is a professional-grade portable flow and pressure test instrument designed for accurate, reliable field testing across a wide range of water network and fire hydrant applications. It delivers precise measurements of flow rates from 30 to 3000 litres per minute and pressures up to 25 bar, making it ideal for hydrant testing, water main flushing, trunk main conditioning, and minimum night flow analysis.
Built with an advanced electromagnetic sensor that contains no moving parts, the Flowmaster 250DL MK2 provides consistent, debris-resistant readings that are not affected by water quality or particulates. With a flowrate accuracy of up to 98% and pressure accuracy within ±1% of range, it delivers high-performance data you can trust for compliance and reporting.
This unit features a fully integrated data logger, allowing users to store and transfer flow and pressure results easily via USB. The clear, backlit 320 x 240 graphic colour display presents all measurement data in one place, simplifying on-site use. Its intuitive controls and compact form factor ensure ease of operation, while its robust aluminium housing offers long-lasting durability in harsh environments.
Powered by a rechargeable lithium-ion battery with up to 10 hours of operation, the Flowmaster 250DL MK2 is a truly portable solution for field engineers and utility professionals. A battery monitor provides a clear indication of remaining runtime, and an optional external battery pack can extend usage further. The instrument is supplied with 2.5” BS Instantaneous male/female connections, with a wide range of optional adaptors available to suit different regional standards.
From hydrant testing to flow verification and network analysis, the Flowmaster 250DL MK2 delivers dependable performance, data accuracy, and field-ready versatility in a single, compact unit.
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The 3 people I deal with most at Delta are Richard, Lisa and Ashley. They never let me down and are always ready to help and assist with any enquiries I have. Most importantly they understand that my business often has urgent inquiries that others dont and have always been very capable of competitive pricing and getting equipment to me in good time enabling me to meet very strict customer deadlines. Delta fire is highly recommended my me.
don Hawkins
4.5 /5 out of 11 ReviewsFantastic equipment and customer service. Would high recommend Delta Fire to any company looking for fire service equipment. After doing a lot of market research, I found and contacted Delta Fire to get more information about their equipment. Any questions I had where answered, they helped me look at my company's needs and pick which products where best suited. Extremely helpful. To add the very long warranty and that they are UK made is what separates the from the rest. Thank you guys for all your help. 10/10
thomas gallagher
4.5 /5 out of 11 ReviewsThe Delta Fire team are the global leaders in firefighting equipment. I have experienced first hand their state of the art facility in Norfolk,UK manufacturing their leading technology fire nozzles and it is exceptionally impressive. The staff are knowledgeable, polite and offer an incredibly streamlined service. Highly recommended.
charlotte Bushell
4.5 /5 out of 11 ReviewsTheir team is brilliant, always helpful and provide a great service.
Brian
4.5 /5 out of 11 ReviewsDelta Fire provide a great service. I often get enquiries from our customers and always need some help clarifying the specific types and sizes of fire safety equipment required. Delta are always there to help. I often deal with Ashley and he is always very helpful. Highly recommend.
Thomas Parker
4.5 /5 out of 11 ReviewsThe 3 people I deal with most at Delta are Richard, Lisa and Ashley. They never let me down and are always ready to help and assist with any enquiries I have. Most importantly they understand that my business often has urgent inquiries that others dont and have always been very capable of competitive pricing and getting equipment to me in good time enabling me to meet very strict customer deadlines. Delta fire is highly recommended my me.
don Hawkins
4.5 /5 out of 11 ReviewsThe 3 people I deal with most at Delta are Richard, Lisa and Ashley. They never let me down and are always ready to help and assist with any enquiries I have. Most importantly they understand that my business often has urgent inquiries that others dont and have always been very capable of competitive pricing and getting equipment to me in good time enabling me to meet very strict customer deadlines. Delta fire is highly recommended my me.
don Hawkins
out of 11 ReviewsFantastic equipment and customer service. Would high recommend Delta Fire to any company looking for fire service equipment. After doing a lot of market research, I found and contacted Delta Fire to get more information about their equipment. Any questions I had where answered, they helped me look at my company's needs and pick which products where best suited. Extremely helpful. To add the very long warranty and that they are UK made is what separates the from the rest. Thank you guys for all your help. 10/10
thomas gallagher
out of 11 ReviewsThe Delta Fire team are the global leaders in firefighting equipment. I have experienced first hand their state of the art facility in Norfolk,UK manufacturing their leading technology fire nozzles and it is exceptionally impressive. The staff are knowledgeable, polite and offer an incredibly streamlined service. Highly recommended.
charlotte Bushell
out of 11 ReviewsTheir team is brilliant, always helpful and provide a great service.
Brian
out of 11 ReviewsDelta Fire provide a great service. I often get enquiries from our customers and always need some help clarifying the specific types and sizes of fire safety equipment required. Delta are always there to help. I often deal with Ashley and he is always very helpful. Highly recommend.
Thomas Parker
out of 11 ReviewsThe 3 people I deal with most at Delta are Richard, Lisa and Ashley. They never let me down and are always ready to help and assist with any enquiries I have. Most importantly they understand that my business often has urgent inquiries that others dont and have always been very capable of competitive pricing and getting equipment to me in good time enabling me to meet very strict customer deadlines. Delta fire is highly recommended my me.
don Hawkins
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