Flow Instruments GmbH

Flow measurement specialists for cryogenic air gases, CO2, LNG, hydrogen, propane, LPG and AdBlue. Home of the Dynaflow 3000 dispenser, the industry benchmark for LNG vehicle fueling stations.

Every year Flow produces > 1000 durable, reliable and efficient measuring systems and undertakes > 3000 calibrations at customer sites. Already a significant player across Germany and Europe, Chart's global network has enabled successful expansion into Latin America, Malaysia, China, Russia and the Middle East.

FLOW Metering Systems

Versatile and precise measurement for a wide variety of fluids including liquefied air gases (nitrogen, oxygen, argon), CO₂, hydrogen, liquid petroleum gases (LPGs) and AdBlue.

• Suitable for both stationary (storage tanks, fueling stations) and vehicle (trucks, trailers) applications
• Standard range covers flow rates from 1000 kg/hr to 70.000 kg/hr (2200 lb/hr to 154000 lb/hr)
• Lifetime guarantee on measuring section

DynaFlow® 3000 LNG Dispenser

Specifically designed and proven for fast, accurate and reliable fueling of natural gas vehicles. The system includes a mass flow meter, complete with European type approval based on MID (Measuring Instrument Directive).

• Supplied ready for mounting onto a standard pump island
• Average fueling time: only 3 min/450l
• Measurement accuracy better than 0.25%
• Card-operated and/or self-service operation
• Can be supplied as part of a mobile or stationary LNG fueling station
• MID approved
• Digital display showing price, amount of gas in kg and price per kg
• Recycling of boil-off gas eliminates emissions during normal use

Dynaflow 3000 provides operators with accurate, real-time dynamic density measurement, which assures a very precise mass flow calculation. Every dispenser is equipped with a quick-connect LNG nozzle and compressed air cleaning connection.
Metering components are electronically and mechanically pre-tested and factory calibrated. On site performance tests validate that the process performances of the refueling stations are met.
Dynaflow 3000 complies fully with ATEX safety requirements.

Each device can be tailored according to customer requirements and branded accordingly.

Integrated connectors to our Mastermeter device ensure simple, fast and accurate calibration.

Flow's metering and dispenser technology is at the heart of Chart's LNG and hydrogen fueling stations for road and sea.

Calibration and Service

At Flow our commitment to service is absolute. Our complete aftermarket packages include periodic calibration and accuracy verification of flow metering devices together with routine maintenance, operator training and installation as required. We're also available to answer any questions and respond immediately to emergency situations.

We come to you - FLOWMass is a mobile calibration system that allow us to recalibrate all different types and brands of flow meters accurately and at your site, saving you time and money. A typical calibration with FLOWMass takes only 45 minutes.

Our full-service maintenance contracts are completely cost transparent. You pay a fixed monthly rate and we take care of everything else.

MiniBulk Distribution System (MBDS)

Specifically designed for fast filling of CO₂ tanks in city center and residential areas where access is restricted to conventional tankers and/or associated noise pollution is a nuisance or prohibits deliveries out of hours.

MBDS consists of an exchangeable distribution tank, pressure builder and FLOW metering system that can be installed on small trucks and pick-ups or into into a regular van. By eliminating the need for a pump, the in-house engineered and built pressure builder results in a significantly quieter fill for 24/7 operation.

Typical applications include restaurants, pubs and small breweries.

Count on FLOW

Click the link to to learn more about our highly accurate flow measurement products

LNG Fueling Systems

Flow's metering and dispenser technology is integral to Chart's LNG fueling stations. Click the link to learn more