Filter
Top Products
Technical Guide
DAN-LIQ-Turbine Meter-TG-0807
August 2007
Page 7
RIMMED ROTORS FOR HIGHER RESOLUTION
In the larger diameter Daniel Series 1500 Liquid Turbine Flow Meter (normally above 6” in line size), the resolution
provided by a blade-type motor may be improved by the use of a rimmed (or shrouded) rotor. This construction is standard
for Daniel meters of 8” and up. A lightweight stainless steel rim (or shroud) carries small paramagnetic buttons which
provide a greater resolution of ow by generating more pulses per unit volume.
Daniel Series 1200 and 1500 Liquid Turbine Flow Meters are supplied with one Universal Mounting Box (UMB) as
standard. This is attached to a boss, which in turn is attached to the meter body. This assembly may house two pickoffs,
which are oriented such that their outputs are 90º electrically out of phase.
Figure 7 - Daniel
®
Series
1500 Liquid Turbine Flow
Meter internals showing
standard rimmed rotor
Figure 8 - Daniel
®
Series
1500 Liquid Turbine Flow
Meter internals showing high
resolution rotor
The Daniel
®
Series 1500 Liquid Turbine Flow Meter is also offered with a high resolution rotor. This rotor is designed
with slots in the rim in place of paramagnetic buttons and provides a higher number of pulses per unit volume than the
standard rotor which enables proving with a smaller pipe size prover.