![YOKOGAWA AE100D Скачать руководство пользователя страница 175](http://html.mh-extra.com/html/yokogawa/ae100d/ae100d_instruction-manual_911083175.webp)
IM 1F6A0-01E
3-4
3. INSTALLATION
3.3 Precautions Regarding In-
stallation
WARNING
In case of high process temperature, care should be
taken not to burn yourself because the surface of
body and case reach a high temperature.
(1) Gas or Steam Measuring Precautions
• Piping to Prevent Standing Liquid
Mount YEWFLO in a vertical pipeline to avoid liquid
traps. When YEWFLO is installed horizontally, raise
that part of the pipeline in which the YEWFLO is
installed.
F030301.EPS
(Good)
(Good)
(No Good)
Flow
Flow
Flow
Figure 3.2
(2) Liquid Measurement Precautions
To insure accurate measurement, the YEWFLO must
always have a full pipe.
• Piping Requirements for Proper Operation
Allow the flow to flow against gravity. When the flow is
moving with gravity, lift the down-stream pipe length
above the YEWFLO installation level to maintain full
pipeline.
Flow
Flow
Flow
Flow
(No Good)
(No Good)
(Good)
(Good)
h h>0
h
h>0
F030302.EPS
Figure 3.3
• Piping for Avoiding Bubbles
Flows containing both gas and liquid cause problems.
Avoid gas bubbles in a liquid flow. Piping should be
carried out to avoid bubble generation.
Install the valve on the downstream side of the flowme-
ter because pressure drop across the control valve may
cause gas to come out of the solution.
F030303.EPS
Flow
Flow
Flow
(Good)
(Good)
(No Good)
Control
Value
Figure 3.4
(3) Multi-Phase Flow
YEWFLO can measure gas, liquid and steam when there
is no change in state. However, accurate measurement of
mixed flows (e.g. gas and liquid) is not possible.
F030304.EPS
(No Good)
(No Good)
Mist flow
(No Good)
Stratified flow
Bubble flow
Liquid
Flow
Gas Flow
Figure 3.5
Содержание AE100D
Страница 2: ......
Страница 333: ...Blank Page ...
Страница 395: ...Blank Page ...
Страница 401: ...Blank Page ...