Oval Gear Flow Meter/Counter

Model: DON-1-20H-N4-4-H0-N-0
Brand: Kobold 
[DON-1]:
Operating principle Gear Wheel
Mounting position horizontal / vertical
Flow direction in direction of the arrow
max. temperature 80 °C 
max. pressure 64 Bar 
Accuracy ±0,2 % …1 % of reading
Housing material Aluminium 
Rotor material PPS 
[20H]: Measuring range,1-40 L/min 
[N4]: Mech. connection, for meas. range 20H, NPT 1/2 
[4]: Seal, NBR 
[H0]: Electronic, Pulse output Hallsensor/Reed switch, Push Pull (8-30 VDC) 
[N]: Cable entry, 1/2 NPT
[0]: Options (please specify in clear text), without 
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Datasheet: http://kobold.com/uploads/files/don-gb-flow-1.pdf