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SERIES 1200 LIQUID TURBINE METER
1.6
Description of the Series 1200 Liquid Turbine
Meter (LTM)
1.6.1
General features of the turbine meter
The Daniel Series 1200 Liquid Turbine Meter (LTM) is a volumetric flow metering and
transmitting device used extensively in the petroleum industry for the accurate
measurement of liquid hydrocarbons. The turbine meter's simple configuration ensures
higher flow rates, extended flow range and sustained performance capability. This meter is
specifically designed for loading rack service where a vital characteristic is repeatability.
The turbine meter is designed for use within the guidelines of
API Manual of Petroleum
Measurement Standards (MPMS)
, Chapter 5.3 and test procedures of API MPMS, Chapter 4
(Prover systems).
The meter consists of two main parts: Local Mounted Enclosure (LME) assembly and the
meter body housing assembly.
The LME is an explosion-proof, weather-resistant housing for dual pickoffs, as well as an
encapsulated preamplifier. It also serves as the mechanical mounting connection
necessary for local and remote accessories.
Note
Daniel offers electronic enclosures with different housing materials and electronic
configurations.
Local Mounted Enclosure (LME)
The LME consists of an electrical enclosure and a solid cover made of stainless steel. This
configuration contains a mounting bracket and a preamplifier which works with two
standard pickoff coils mounted into the meter housing.
The electrical enclosure contains an external and an internal grounding lug. The two
enclosure openings are plugged with stainless steel plugs. Refer to
Operating conditions
and specifications
for more specifications.
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
Introduction
User manual
September 2020
P/N 3-9008-513
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Daniel Series 1200 Liquid Turbine Meter