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Technical Guide
DAN-LIQ-Turbine Meter-TG-0807
August 2007
Page 2
THE DANIEL
®
SERIES 1200 AND 1500 LIQUID TURBINE FLOW METER SYSTEMS
The Daniel Series 1200 and 1500 Liquid Turbine Flow Meter Systems combine turbine meters and electronic
instrumentation to measure volumetric total ow and/or ow rate. Each Daniel turbine meter comprises of a
cylindrical housing containing a precise turbine rotor assembly. The magnetic pickoff, or pickoffs, are mounted
in a boss on the meter body. As uid passes smoothly through the ow meter, it causes the rotor to revolve with
an angular velocity proportional to ow. The rotor blades or rim buttons passing through the magnetic eld of the
pickoff generate a pulsing voltage in the coil of the pickoff assembly. Each voltage pulse represents a discrete
volume. The total number of pulses collected over a period of time represents the total volume metered.
The sinusoidal signal from each pickoff has low amplitude and may not normally be relied upon for
transmission distances over 20 feet (6 meters). The signal must, therefore, be amplied. This is achieved with a
preamplication board mounted on the turbine meter. These pulse signals are typically transmitted to control room
instrumentation such as ow computers, and may also be required to input to prover computers which calculate,
display, transmit, control or record the ow sensed by the rotor. The results may be displayed as pulse-counts or
standard engineering units, such as gallons, barrels, etc.
All Daniel Series 1200 and 1500 Liquid Turbine Flow Meters have, as standard, the Universal Mounting Box
(UMB) which may be tted with one or two pickoffs and the dual channel preamplier. The pickoff mountings are
oriented so that the outputs from the pickups are 90º electrically out of phase. The Daniel Series 1500 Liquid
Turbine Flow Meter may be supplied with two UMBs, offering up to four pulse outputs. Alternate pairs across the 2
UMBs are also 90º electrically out of phase.
Daniel manufactures the Series 1200 and 1500 Liquid Turbine Flow Meters, the adjacent tube sections, and the
electronic instrumentation. Each meter is precisely ow calibrated before shipment.
The Meter Systems are used to provide measurement information in uid transport, petroleum and chemical
processing, custody transfer of liquids, blending systems, and in product batching in eld or plant operations. The
repeatability of the systems ensures quality measurement of uids over a wide range of ow rates, temperatures,
compositions and viscosities.
Flow Computer
Figure 2 - Liquid Turbine Flow Meter System