Flow Measurement


  • suitable for widely varying flow rates
  • suitable for contaminated water


H-flumes were developed to determine widely fluctuating flow rates, from very low to extremely high volumes. For example, seasonally variable flow rates or discharges due to severe precipitation events can be measured. Furthermore, H-flumes are also used for the detection of agricultural and industrial drainage processes. Provided that there is an open channel with free discharge at the outlet, they provide excellent accuracy even in contaminated water. A pre-set calming channel ensures a uniform distribution of the flow over the entire measuring width.
The H-Flumes are made of robust stainless steel.
The water level is scanned without contact by means of an ultrasonic transducer or with capacitive sensors, which are installed in a V2A protective housing. When combined with UGT data loggers, the temperature and wind compensation of the ultrasonic transducers are performed in the data logger.

We supply H-flumes in three sizes to facilitate optimal alignment to the prevailing flow rate range:  

TypeOuter dimensions       H-flume (LxWxH)Outer dimensions 
approach channel 
max. LevelFlow rate
1 Ft-H-flume42 x 64 x 41 cm101* x 64 x 35 cm30,5 cm0,02 …   55 l/s
2 Ft-H-flume83 x 126 x 74 cm101* x 126 x 68 cm61 cm0,04 … 315 l/s
3 Ft-H-flume124 x 184 x 105 cm101* x 184 x 99,5 cm91,5 cm0,06 … 870 l/s

* Standart length approach channel 101 cm, custom lengths on request