Cameron Scanner 2000 microEFM, Руководство пользователя по оборудованию

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Scanner
®
2000 microEFM Section 2
Measuring Compensated Liquid via a Turbine Meter
Best Practices
The Scanner 2000 microEFM calculates compensated liquid flow through a turbine meter in accordance with
API-2540 and the measurement principles upon which the AGA-7 standard is based. The user supplies a
linear or multi-point calibration factor, and the instrument performs the required compensation calculations,
based on the RTD input.
For optimum performance, ensure that the turbine and Scanner 2000 installation complies with the industry
recommendations listed below:
• Install the turbine flowmeter in the meter run such that there are at least 10 nominal pipe diameters up
-
stream and five nominal pipe diameters downstream of the meter. Both inlet and outlet pipe should be of
the same nominal size as the meter.
• Straightening vanes are recommended for eliminating swirl conditions. If used, they should be installed
five pipe diameters upstream of the meter.
Installation Procedure—Direct Mount to a Turbine Meter (CSA Compliant)
A Scanner 2000 without the MVT bottomworks can be mounted directly to a liquid turbine meter for
measuring liquid (Figure 2.12). A pipe adapter and union are attached to the Scanner, allowing a direct
connection to the turbine meter.
WARNING HAZARDOUS AREA USE. The Scanner 2000 is certified for hazardous area use only when
installed in accordance with applicable standards and local wiring practices. Carefully
review Hazardous Area Installations, page 27, to determine specific installation require -
ments (cable glands, conduit seals, signal cable, RTD, etc.).
Flow
Adapter/union
(CSA-approved)
RTD assembly
10 pipe diameters
upstream
5 pipe diameters
downstream
Figure 2.12—Direct-mount installation for use with a Barton 7000 Series meter