Table of Contents
Advertisement
User manual
P/N 3-9008-507
Remote Mounted Enclosure (RME)
The RME is an electric transmitting device used primarily in the petroleum industry for
remote installation of liquid turbine meter electronics. The RME is specifically designed for
high temperature applications.
The turbine meter is ideal for applications requiring high frequency resolution.
Applications may include electronic registers, batchers, electronic presets or flow
computers.
1.6.2
Operation overview of the turbine meter
Metering systems combine turbine meters and electronic instrumentation to measure
volumetric total flow and/or flow rate. Metering systems are used to provide
measurement information in fluid transport, petroleum and chemical processing, custody
transfer of liquids, blending systems, in product batching and in field or plant operations.
•
Each turbine meter is comprised of a cylindrical housing that contains a precise turbine
rotor assembly. The magnetic pickoffs are mounted in a boss on the turbine meter
body.
•
As fluid passes through the turbine meter, it causes the rotor to revolve with an angular
velocity proportional to flow.
•
The rotor blades passing through the magnetic field 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 a low amplitude and is not normally relied
upon for transmission distances over 6 meters (20 feet). The signal must, therefore, be
amplified. This is achieved with a preamplifier contained within the LME that is
mounted on the turbine meter.
•
These pulse signals are typically transmitted to control room instrumentation, such as
flow computers, and may also be required to transmit to prover computers which
calculate, display, transmit, control or record the flow sensed by the rotor. The results
may be displayed as pulse-counts or standard engineering units, such as gallons, liters,
barrels, etc.
•
All Daniel Series 1500 Liquid Turbine Meters have, as standard, the LME which is fitted
with two pickoffs and a dual channel preamplifier.
•
The pickoff mountings are oriented so that the outputs from the pickups are 90º
electrically out of phase. The turbine meter may be supplied with two LMEs, offering up
to four pulse outputs. Alternate pairs across the two LMEs are also 90º electrically out of
phase.
•
Each turbine meter is precisely flow calibrated before shipment.
1.6.3
Parts lists for the Series 1500 LTM, Nominal Pipe Size
(NPS) 1-2.5
This section includes the necessary parts required to assemble a standard unit described in
this manual.
User manual
USER MANUAL
Introduction
September 2020
11
9
www.Daniel.com
Advertisement
Table of Contents
