Riegler DFMM25-1

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Flowmeter incl. measurement section with threaded connection R 1, DN 25, Measuring range 0.5 - 290 m³/h, PN max. 16 bar
Calorimetric measurement system for monitoring changes in flow and consumption as well as for leak
and energy efficiency measurements. No additional pressure or temperature compensation is necessary.
All measured values are recorded digitally, making very rapid, high-precision measurement possible.
High measurement accuracy due to defined measurement section.

- Display: Current consumption in l/min, m³/hr, etc. and total consumption (meter reading) in m³, l, etc.
- Total consumption (meter reading) can be reset to “zero” with keypad
- Display can pivot 180°, measuring device can be unscrewed
- Measured quantities: m³/hr, l/min (1000 mbar, 20 °C) for compressed air or
Nm³/h, Nl/min (1013 mbar, 0 °C) for gases
- Units: m³/hr, m³/min, l/min, etc. can be selected with keypad
- Gas types: Compressed air (= standard),
other gas types such as nitrogen, argon, CO2, etc. can be selected with hand-held measurement unit
- Accuracy: ± 1.5% of measured value
- Digital output: RS 485 interface, Modbus RTU for connecting to energy management systems,
building management systems, etc.
- Housing material: Polycarbonate (IP65)
- Measurement section material: Stainless steel 1.4301

Not included in delivery:
- Wall power supply
- Portable hand-held measurement unit with mobile data logger


DN : 25.0
Display : Background lighting
Flow rate output : Analogue 4 to 20 mA, pulse output (galvanically separated)
H1 [mm] : 0
L [mm] : 475
Max. measuring range : 290 m³/h
Max. operating pressure [bar] : 16
Max. temperature range [°C] : 80
Measuring system : Calorimetric measurement
Medium : Compressed air, neutral gases
Min. measuring range : 0.5 m³/h
Min. temperature range [°C] : -30
Operating voltage : 24 V DC
Page No. : HK064
Thread : R 1
Tube I.D. [mm] : 0


Click below to download the product-related documents


Manual-1
Manual-2
Manual-3