Emerson MICRO MOTION T-SERIES Manual de usuario
Installation Manual
20002172, Rev BA
December 2010
Micro Motion® T-Series Coriolis Flow and
Density Sensors
Safety and approval information
This Micro Motion product complies with all applicable European directives when properly installed in accordance with the instructions in this manual.
Refer to the EC declaration of conformity for directives that apply to this product. The EC declaration of conformity, with all applicable European
directives, and the complete ATEX Installation Drawings and Instructions are available on the internet at www.micromotion.com/atex or through your
local Micro Motion support center.
Information affixed to equipment that complies with the Pressure Equipment Directive can be found on the internet at www.micromotion.com/
documentation.
For hazardous installations in Europe, refer to standard EN 60079-14 if national standards do not apply.
Other information
Full product specifications can be found in the product data sheet. Troubleshooting information can be found in the transmitter configuration manual.
Product data sheets and manuals are available from the Micro Motion web site at www.micromotion.com/documentation.
Return policy
Micro Motion procedures must be followed when returning equipment. These procedures ensure legal compliance with government transportation
agencies and help provide a safe working environment for Micro Motion employees. Failure to follow Micro Motion procedures will result in your
equipment being refused delivery.
Information on return procedures and forms is available on our web support system at www.micromotion.com, or by phoning the Micro Motion
Customer Service department.
Micro Motion customer service
Location Telephone number
U.S.A. 800-522-MASS (800-522-6277) (toll free)
Canada and Latin America +1 303-527-5200 (U.S.A.)
Asia Japan 3 5769-6803
All other locations +65 6777-8211 (Singapore)
Europe U.K. 0870 240 1978 (toll-free)
All other locations +31 (0) 318 495 555 (The Netherlands)
Customers outside the U.S.A. can also send an email to [email protected].
Contents
Chapter 1 Planning ...........................................................................................................................1
1.1 Installation checklist ........................................................................................................................1
1.2 Best practices ..................................................................................................................................2
1.3 Environmental limits .......................................................................................................................2
1.4 Recommendations for hygienic and self-draining applications ........................................................3
Chapter 2 Mounting .........................................................................................................................6
2.1 Mount the sensor ............................................................................................................................6
Chapter 3 Wiring ..............................................................................................................................7
3.1 Options for wiring ...........................................................................................................................7
3.2 Connect 4-wire cable ......................................................................................................................7
3.3 Connect 9-wire cable ....................................................................................................................10
Chapter 4 Grounding ......................................................................................................................11
Chapter 5 Supplementary information ............................................................................................12
5.1 Purge the sensor case ....................................................................................................................12
Contents
Installation Manual i
Contents
ii Micro Motion T-Series
1 Planning
Topics covered in this chapter:
•Installation checklist
•Best practices
•Environmental limits
•Recommendations for hygienic and self-draining applications
1.1 Installation checklist
□Make sure that the hazardous area specified on the sensor approval tag is suitable
for the environment in which the sensor is installed.
□Verify that the local ambient and process temperatures are within the limits of the
sensor. See Environmental limits.
□If your sensor has an integral transmitter, no wiring is required between the sensor
and transmitter. Follow the wiring instructions in the transmitter installation manual
for signal and power wiring.
□If your transmitter has remote-mounted electronics, follow the instructions in this
manual for wiring between the sensor and the transmitter, and then follow the
instructions in the transmitter installation manual for power and signal wiring.
□For the wiring between the sensor and the transmitter, consider maximum cable
lengths (see Table 1-1 and Table 1-2). The maximum distance between the sensor
and transmitter depends on the cable type. For all types of wiring, Micro Motion
recommends using Micro Motion cable.
Maximum lengths for Micro Motion cableTable 1-1:
Cable type To transmitter Maximum length
Micro Motion 9-wire 9739 MVD transmitter 1000 ft (300 m)
All other MVD transmitters 60 ft (20 m)
Micro Motion 4-wire All 4-wire MVD transmitters 1000 ft (300 m)
Maximum lengths for user-supplied 4-wire cableTable 1-2:
Wire function Wire size Maximum length
Power (VDC) 22 AWG (0,35 mm2) 300 ft (90 m)
20 AWG (0,5 mm2) 500 ft (150 m)
18 AWG (0,8 mm2) 1000 ft (300 m)
Signal (RS-485) 22 AWG (0,35 mm2) or larger 1000 ft (300 m)
Planning
Installation Manual 1
□The sensor will work in any orientation as long as the flow tube remains full of
process fluid.
□Install the sensor so that the flow direction arrow on the sensor matches the actual
forward flow of the process.
1.2 Best practices
The following information can help you get the most from your sensor.
•There are no pipe run requirements for Micro Motion sensors. Straight runs of pipe
upstream or downstream are unnecessary.
•If the sensor is installed in a vertical pipeline, liquids and slurries should flow upward
through the sensor. Gases may flow upward or downward.
•Keep the sensor tube full of process fluid.
•For halting flow through the sensor with a single valve, install the valve downstream
from the sensor.
•Minimize bending and torsional stress on the meter. Do not use the meter to align
misaligned piping.
•The sensor does not require external supports. The flanges will support the sensor in
any orientation.
1.3 Environmental limits
See Figure 1-1 for the ambient and process temperature limits of the sensor.
Planning
2Micro Motion T-Series
Environmental limits for T-Series sensorsFigure 1-1:
Maximum process temperature in °F (°C)
176 (80)
140 (60)
100 (38)
60 (16)
20 (7)
–20 (–29)
–40 (–40)
–60 (–51)
–60
(–51)
–20
(–29)
20
(7)
100
(38)
140
(60)
200
(93)
240
(116)
125.5
(52)
122 (50)
Ambient temperature of core processor or
transmitter in °F (°C)
Gray area = Mount transmitter remotely (use junction box)
60
(16)
320
(160)
300
(149)
Notes
•When ambient temperature is below –40 °F(–40 °C), a core processor or transmitter must be
heated to bring its local ambient temperature to between –40 °F(–40 °C) and +140 °F(+60 °C).
Long-term storage of electronics at ambient temperatures below –40 °F(–40 °C) is not
recommended.
•Temperature limits may be further restricted by hazardous area approvals. Refer to the hazardous
area approvals documentation shipped with the sensor or available from the Micro Motion web site
(www.micromotion.com).
•The extended-electronics option allows the sensor case to be insulated without covering the
transmitter, core processor, or junction box, but does not affect temperature ratings.
•For the purposes of selecting electronics options, this graph should be used only as a general guide.
If your process conditions are close to the gray areas, it may be inappropriate to use electronics
options other than a junction box. Consult with your Micro Motion representative.
1.4 Recommendations for hygienic and self-
draining applications
For optimal cleanability and drainability:
•If possible, install the sensor in a vertical pipeline with the process fluid flowing
upward through the sensor.
Planning
Installation Manual 3
•The minimum angle of inclination of the sensor depends on the process fitting. See
Figure 1-2 and Table 1-3.
•For clean-in-place (CIP) applications, Micro Motion recommends using the
generally-accepted flow velocity of at least 1.5 m/s for cleaning the sensor.
•If the process piping must be larger than the sensor, eccentric reducers may be used
to ensure full drainability. In this case, the process end connections for the piping
and sensor must be the same size. See Figure 1-3.
Note
As part of the cleaning process, skid-based systems may be purged with nitrogen at the end
of the cleaning cycle. When using eccentric reducers, it is possible to trap gas in the section of
process piping adjacent to the reducer. Sensor performance can be impacted by intermittent
flow of the captured gas in a liquid fluid stream.
•The gap between the electronics housing and sensor body should be inspected
periodically. Manually clean this gap when necessary.
Sensor inclinationFigure 1-2:
B
A
A. Angle of inclination
B. Direction of gravity
Minimum angle of inclinationTable 1-3:
Model
Fitting
code Description Min. angle
T025F, T025T 621 1/2-inch Tri-clamp compatible sanitary clamp 47°
670 DN10 DIN 11851 sanitary coupling 47°
671 DN15 DIN 11851 sanitary coupling 47°
676 DN15 DIN 11864-1A sanitary coupling 47°
T050F, T050T 621 1/2-inch Tri-clamp compatible sanitary clamp 0°
671 DN15 DIN 11851 sanitary coupling 47°
676 DN15 DIN 11864-1A sanitary coupling 47°
T075F, T075T 622 3/4-inch Tri-clamp compatible sanitary clamp 0°
623 1-inch Tri-clamp compatible sanitary clamp 47°
Planning
4Micro Motion T-Series
Minimum angle of inclination (continued)Table 1-3:
Model
Fitting
code Description Min. angle
662 DN25 ISO 2853 (IDF) sanitary coupling 47°
672 DN25 DIN 11851 sanitary coupling 47°
677 DN25 DIN 11864-1A sanitary coupling 47°
692 DN25 SMS 1145 sanitary coupling 32°
T100F, T100T 623 1-inch Tri-clamp compatible sanitary clamp 0°
624 1 1/2-inch Tri-clamp compatible sanitary clamp 46°
672 DN25 DIN 11851 sanitary coupling 0°
677 DN25 DIN 11864-1A sanitary coupling 0°
T150F, T150T 624 1 1/2-inch Tri-clamp compatible sanitary clamp 0°
625 2-inch Tri-clamp compatible sanitary clamp 46°
663 DN51 ISO 2853 (IDF) sanitary coupling 47°
673 DN40 DIN 11851 sanitary coupling 0°
674 DN50 DIN 11851 sanitary coupling 47°
678 DN50 DIN 11864-1A sanitary coupling 47°
693 DN51 SMS 1145 sanitary coupling 32°
Eccentric reducerFigure 1-3:
AB
C
A. Sensor case
B. Process end connection is the same size as the sensor connection
C. Eccentric reducer
Planning
Installation Manual 5
2 Mounting
2.1 Mount the sensor
Use your common practices to minimize torque and bending load on process connections.
Tip
To reduce the risk of condensation or excessive moisture, the conduit opening should not point
upward (if possible). The conduit opening of the junction box or core processor can be rotated freely
to facilitate wiring.
Procedure
Mount the sensor in the pipeline (see Figure 2-1).
Mounting the sensorFigure 2-1:
Notes
•Do not use the sensor to support the piping.
•The sensor does not require external supports. The flanges will support the sensor in any orientation.
CAUTION!
Do not lift the sensor by the electronics or purge connections. Lifting the sensor by the
electronics or purge connections can damage the device.
Mounting
6Micro Motion T-Series
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