Badger Meter 1200 - Manual (Page 5)

INTRODUCTION
The Blancett Model 1200 in-line turbine flow meter was engineered for applications in high corrosive environments
Developed for use in petrochemical and other process industries with liquid chemical flows, the Model 1200 turbine provides
accuracy and durability in aggressive industrial environments The meter features a 303 stainless steel body and internal
wetted parts, with two type 440 stainless steel ball bearings
OPERATING PRINCIPLE
Fluid entering the meter passes through the inlet flow straightener, which reduces its turbulent flow pattern and improves
the fluid’s velocity profile Fluid then passes through the turbine, causing it to rotate at a speed proportional to the fluid
velocity As each turbine blade passes through the magnetic field, the blade generates an AC voltage pulse in the pickup coil
at the base of the magnetic pickup (see Figure 1 ) These pulses produce an output frequency proportional to the volumetric
flow through the meter The output frequency represents flow rate and/or totalization of fluid passing through the turbine
flow meter
Turbine Rotor
Magnetic Pickup
or
Other Frequency
Output Device
Output
Signal
Figure 1: Schematic illustration of electric signal generated by rotor movement
User Manual
Page 5 November 2013