Flow measurements - Import export

We offer you standardized complete systems for the measurement of volume & mass flows. We use measuring elements that have established themselves within previously built customer-specific test benches and convince with high measuring accuracy. The SMF® series of nozzle test benches has been specially developed for calibration with air. Critical nozzles are used as measuring elements. Up to 18 critical nozzles can be combined, depending on customer requirements. EP offers different designs for the register: Drum Design, Block Design & Register Design. Another variant is a mobile system: The EP SMF® - Mobile Flow Calibrator - a compact measuring system for flow calibration. EP Ehrler Prüftechnik manufactures single nozzles in the flow rate range from 0.005 to 2000 m³/h. In addition to our standard range, we also manufacture customer-specific nozzles that are perfectly designed for your application in compliance with DIN EN ISO 9300*.

Based on years of experience in the field of test bench metrology in the automotive industry, EP develops test bench solutions for various applications. We build test benches for testing automotive components such as heat exchangers, intercoolers, filters, valves and others. These are test benches on which e.g. supplier parts for the automotive industry are tested in production. Our specialist knowledge of the industry makes us a strong partner in this area.

Over the last few years, we at EP-E have designed and introduced a range of primary standards designed for use in calibration laboratories. As a technology partner of the Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig, Germany, our solutions are based on the highest standards. The EP gas bell plungers generate a volume flow which is traceable to the SI units length and time. The pistons are driven by a stepper motor via a spindle. In the initial state one piston is fully retracted and the other fully extended. The volume flow can be set with high precision via the piston cross section and the travel speed. At the end of the calibration process, both pistons are in the opposite position to the initial position.

We develop and manufacture Venturi tubes and nozzles as individual components or as complete VMF® systems. The VenturiMasterFlow® measuring system, VMF® for short, is used for the precise measurement of air or gas volume and mass flows 100,000 m³/h The flow measurement by means of a Venturi tube or Venturi nozzle is characterized by high measuring accuracies up to 0.5% MW and a fast response time < 10 ms. A further benefit is the high long-term stability of the measuring element.

EP Ehrler Prüftechnik manufactures LFEs in the flow rate range from 0.012 to 4000 m³/h. In addition to the standard range, EP offers customer-specific LFEs that are perfectly designed for your application. Suitable inlet and outlet sections and the corresponding mounting kits are available for all sizes for installation in customer applications. The achievable measuring accuracy depends largely on the sensor technology used, in particular the differential pressure sensor. When using high-quality sensors, measuring accuracies of up to 0.5 % MW can be achieved with LFEs in the measuring range of 1:10. In order to cover a very wide measuring range without restrictions in measuring accuracy, LFEs with overlapping flow ranges can be combined in one measuring setup. Alternatively, LFEs with correspondingly lower measurement accuracy can also be calibrated for an extended measurement range up to a maximum of 1:100.

We offer you standardised complete systems for the measurement of volume & mass flows. The EP LMF®-LaminarMasterFlow® is a complete system for high-precision flow measurement of gases and air. The LMF® system consists of a flow processor, a Laminar Flow Element (LFE) as measuring section, a cable set and a sensor package. The flow measurement is performed by means of Laminar Flow Elements (LFE), which are available in different sizes and cover a measuring range from 0.01 to 700 m³/h. (optionally up to 4000 m³/h).

We offer you standardised complete systems for the measurement of volume & mass flows. We use measuring elements that have established themselves within previously built customer-specific test benches and convince with high measuring accuracy. We develop and manufacture Venturi tubes and nozzles as individual components or as VMF® complete systems. The VenturiMasterFlow® measuring system, VMF® for short, is used for the precise measurement of air or gas volume and mass flows of 100,000 m³/h. The core of the VMF® system is the FlowProcessor, a PC system with the corresponding data acquisition hardware. Venturi nozzles convince by a low remaining pressure loss and are suitable for flow measurement of gases with high temperatures. The software developed under LabVIEW is operated either via touch screen or with mouse and keyboard.

The high-precision calibration laboratory is accredited according to DIN EN ISO/IEC 17025 for flow calibration of flowing gases. The EP calibration laboratory is accredited by the DAkkS according to DIN EN ISO/IEC 17025:2005 for calibrations of gases in-house and on-site under the procedure number D-K-21444-01-00. We offer calibrations for gas flow measurement as well as temperature, humidity and pressure measurements. In addition, we calibrate all measured variables of the test bench directly at your site. Our experienced technicians also check the harmonious interaction of all sensors, so that the entire system is perfectly tuned. The opening of our new calibration laboratory in Asia enables us to offer you even better service internationally.

The rotary gas meters GM4 and GM16 meet the highest demands for reliable and precise reference measurement of smallest quantities up to 0.01 m³/h. They operate according to the direct displacement principle (RPD - rotary positive displacement), in which two counter-rotating pistons convey a fixed volume from the inlet to the outlet of the gas meter with each full revolution. Due to the specially shaped pistons, absolutely pulsation-free operation can be achieved (patent pending). They achieve an excellent measuring accuracy of 0.5 % MW + 0.005 % EW. Both versions are suitable for operation up to 6 bar overpressure. With continuous, absolutely pulsation-free and highly precise flow measurement, the reference gas meters from Ehrler Prüftechnik are the gold standard in the field of small volume measurement. Features: Reference measurement of small flow rates Continuous and absolutely pulsation-free Overpressure operation Excellent measurement accuracy Robust & compact design