Hydraulic Flow Measurement

Inclinometer

Part No. ND2

for slope detection of moving weir flaps

The new electronic NDW 2 inclinometer utilises a modern measurement method based on MEMS technology for gravitational inclination measurement (rotational angle measurement).

  • Ex approval II 2 G Ex ib IIB T4 (optional)
  • Wear-free
  • Corrosion-proof
  • No moving parts
  • Robust design
  • High accuracy
  • Maintenance-free
  • Reliable
  • High operational safety
  • Fully immersible (IP68)
  • Mercury-free

 

By detecting inclination without the use of shafts it is possible to capture the position of movable weir flaps or other movable and inclinable components such as sluice boards or slide valves without any problems. Overflow volumes or other flow volumes thus can be easily determined by using a Q/h relation or detected angles.
Existing weir flaps can be easily retrofitted by installing the unit on the inclined plane.

NDW 2 combines high accuracy and operational safety with robust design.
The compact unit is free of wear since the measurement principle does not use any movable parts and hence provides reliable measurement results even under flood conditions (IP68).
NDW 2 provides a 4 - 20 mA signal proportional to the angle of inclination (0 - 90° or 0 - 60°) to obtain overflow data.
Following devices such as HydraulicCal-culator Plus, NivuCont Plus, NivuFlow, NivuLog or PCS/SCADA systems use flap-specific data to compute accurate overflow volumes.

Common
Power supply 18 to 28 V DC
Power consumption max. 120 mA
Output 4-20 mA, galvanically isolated
load: max. 500 Ohm
Measurement range 0 ... 60° (clockwise)
0 ... 90° (clockwise)
Enclosure IP 68
Connection cable 6-wire shielded single conductor cable, not removable
Cable lengths 10 / 20 / 30 / 50 / 100 m
Operating temperature -20°C to +60°C

Specifications subject to change.

Data Sheet NDW 2 Inclinometer

EU Declaration of Conformity NDW2


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