Emerson Micro Motion Manuel utilisateur
Installation Manual
MMI-20020994, Rev AB
July 2015
Micro Motion® Fork Viscosity Meters
Direct insertion viscosity meter installation
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 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
Email:
•Worldwide: [email protected]
•Asia-Pacific: [email protected]
Telephone:
North and South America Europe and Middle East Asia Pacific
United States 800-522-6277 U.K. 0870 240 1978 Australia 800 158 727
Canada +1 303-527-5200 The Netherlands +31 (0) 704 136 666 New Zealand 099 128 804
Mexico +41 (0) 41 7686 111 France 0800 917 901 India 800 440 1468
Argentina +54 11 4837 7000 Germany 0800 182 5347 Pakistan 888 550 2682
Brazil +55 15 3413 8000 Italy 8008 77334 China +86 21 2892 9000
Venezuela +58 26 1731 3446 Central & Eastern +41 (0) 41 7686 111 Japan +81 3 5769 6803
Russia/CIS +7 495 981 9811 South Korea +82 2 3438 4600
Egypt 0800 000 0015 Singapore +65 6 777 8211
Oman 800 70101 Thailand 001 800 441 6426
Qatar 431 0044 Malaysia 800 814 008
Kuwait 663 299 01
South Africa 800 991 390
Saudia Arabia 800 844 9564
UAE 800 0444 0684
Contents
Chapter 1 Planning ........................................................................................................................... 1
1.1 Installation checklist ........................................................................................................................1
1.2 Best practices ..................................................................................................................................2
1.3 Power requirements ........................................................................................................................2
1.4 Other installation considerations .................................................................................................... 4
1.5 Recommended installations for short-stem meters .........................................................................7
1.6 Perform a meter check (pre-installation) .........................................................................................9
Chapter 2 Mounting ........................................................................................................................11
2.1 Mount in free-stream application (flanged fitting) .........................................................................11
2.2 Mount in free-stream application (weldolet fitting) .......................................................................12
2.3 Mount with a T-piece (flanged fitting) ........................................................................................... 13
2.4 Mount with a flow-through chamber .............................................................................................15
2.5 Mount in an open tank (long-stem meter) .....................................................................................16
2.6 Mount in a closed tank (long-stem meter) .....................................................................................19
2.7 Attach the PFA ring and circlip .......................................................................................................24
2.8 Rotate the electronics on the meter (optional) ..............................................................................25
2.9 Rotate the display on the transmitter (optional) ............................................................................26
Chapter 3 Wiring ............................................................................................................................ 29
3.1 Available output terminals and wiring requirements ..................................................................... 29
3.2 Explosion-proof/flameproof or non-hazardous output wiring ........................................................30
3.3 Processor wiring for remote-mount 2700 FOUNDATION fieldbus™ option .................................... 34
3.4 Wiring to external devices (HART multidrop) ................................................................................ 39
3.5 Wiring to signal converters and/or flow computers .......................................................................41
Chapter 4 Grounding ...................................................................................................................... 43
Contents
Installation Manual i
Contents
ii Micro Motion Fork Viscosity Meter
1 Planning
Topics covered in this chapter:
•Installation checklist
•Best practices
•Power requirements
•Other installation considerations
•Recommended installations for short-stem meters
•Perform a meter check (pre-installation)
1.1 Installation checklist
□Verify the contents of the product shipment to confirm you have all parts and
information necessary for the installation.
□Verify the meter calibration range and boundary corresponds to the planned
installation. A calibration mismatch can cause measurement error, and will need to
be corrected.
□Make sure that all electrical safety requirements are met for the environment in
which the meter will be installed.
□Make sure that the local ambient and process temperatures and process pressure
are within the limits of the meter.
□Make sure that the hazardous area specified on the approval tag is suitable for the
environment in which the meter will be installed.
□Make sure that you will have adequate access to the meter for verification and
maintenance.
□Verify that you have all equipment necessary for your installation. Depending on
your application, you may be required to install additional parts for optimal
performance of the meter.
□If your meter will be wired to a remote-mount 2700 FOUNDATION fieldbus™
transmitter:
-Refer to the instructions in this manual for preparing the 4-wire cable and wiring
to the processor connections.
-Refer to the instructions in the transmitter installation manual for mounting and
wiring the 2700 FOUNDATION fieldbus™ transmitter. See Micro Motion
Model 1700 and Model 2700 Transmitters: Installation Manual.
-Consider the maximum cable length between the meter and transmitter. The
maximum recommended distance between the two devices is 1000 ft (300 m).
Micro Motion recommends using Micro Motion cable.
Planning
Installation Manual 1
1.2 Best practices
The following information can help you get the most from your meter.
•Handle the meter with care. Follow local practices for lifting or moving the meter.
•Perform a Known Density Verification (KDV) check of the meter prior to installing
the meter in your system.
•For the PFA-coated tines, always fit the protective cover over the tines when the
meter is not in use. The tine coating is not resistant to impact damage.
•Always store and transport the meter in its original packaging. For the long-stem
meters, be sure to include the transit cover secured by the grub screws.
•Do not use liquids incompatible with the materials of construction.
•Do not expose the meter to excessive vibration (greater than 0.5 g continuously).
Vibration levels in excess of 0.5 g can affect the meter accuracy.
•For optimal performance of the meter, ensure the operating conditions correspond
to the meter calibration range and boundary.
•Ensure all piping connections conform to the local and national regulations and
codes of practice.
•Ensure the transmitter housing cover is tightened properly after wiring to maintain
ingress protection and hazardous area approvals.
•Ensure the meter and associated pipework are pressure tested to 1½ times the
maximum operating pressure after installation.
•Thermally insulate the meter and the inlet and bypass-loop pipeline to maintain
stable temperatures.
1.3 Power requirements
Following are the DC power requirements to operate the meter:
•24 VDC, 0.65 W typical, 1.1 W maximum
•Minimum recommended voltage: 21.6 VDC with 1000 ft of 24 AWG (300 m of
0.20 mm2) power-supply cable
•At startup, power source must provide a minimum of 0.5 A of short-term current at
a minimum of 19.6 V at the power input terminals.
Planning
2 Micro Motion Fork Viscosity Meter
Power cable recommendations for explosion-proof/flameproof meters
Minimum wire gauge (AWG per feet)Figure 1-1:
300 600 900 1200 1500 1800 2100 2400 2700 3000
Distance of Installation (ft)
21.6V
24V
14
15
16
17
18
19
20
21
22
23
24
25
26
AWG Maximum
Minimum Wire Gauge
Minimum wire area (mm2 per meter)Figure 1-2:
0.000
0.050
0.100
0.150
0.200
0.250
0.300
0.350
0.400
100 200 300 400 500 600 700 800 900 1000
Minimum Wire Area (mm2)
Distance of Installation (m)
Minimum Wire Area (mm2)
21.6V
24V
Planning
Installation Manual 3
1.4 Other installation considerations
A variety of external factors exist that affect the ability of the meter to operate
successfully. To ensure that your system works correctly, consider the effects of these
factors when designing your installation.
1.4.1 Calibration boundaries
Important
Micro Motion calibrates all meters at the factory according to the sensor calibration range selected at
point of purchase. The factory calibration process takes into account the potential boundary effect of
the planned installation. At point of installation, confirm that the meter calibration range and
boundary matches the planned installation to ensure optimum performance of the meter. If the
meter calibration does not match the planned installation, measurement error may occur and you
will need to perform an onsite calibration.
The boundary effect of an installation refers to the sensitive, or effective, region of the
meter sensing device being interrupted by the boundary of the pipe walls. This effect can
vary based on the type of installation or the size of the pipeline diameter. Considering this
effect when calibrating the meter is important because the direct insertion meter can only
measure the properties of the fluid that are within the region that the meter is sensitive.
The vibration of the fork meter tines creates an effective measurement region that is
shaped as an ovoid centered on the tips of the tines. The long axis of the ovoid is aligned
with the direction that the tines are vibrating. The meter sensor is insensitive to any fluid
properties outside of this region, and progressively more sensitive to the fluid properties
the closer the fluid is to the meter tines (see Figure 1-3).
Planning
4 Micro Motion Fork Viscosity Meter
Region of measurement boundary or sensitivityFigure 1-3:
B
A
C
STATUS
SCROLL SELECT
A. Long axis
B. Short axis
C. Sensitive, or effective, region
When installing the meter, if part of this effective region or volume is interfered with
because of the pipework or fittings a boundary effect exists (see Figure 1-4).
Planning
Installation Manual 5
Example of pipeline installation (with boundary effect)Figure 1-4:
A
STATUS
SCROLL SELECT
A. Pipe walls interrupt effective region of meter sensitivity
1.4.2 Flow rate considerations
You must maintain flow rates and velocities to be relatively constant within the limits
specified for the meter. The fluid flow provides a steady heat flow into the meter
installation, and the flow rate influences the self-cleaning of the meter tines and the
dissipation of bubbles and solid contaminants around the meter.
If you install the meter in a bypass configuration (such as in a free-stream installation in a 4-
inch diameter horizontal bypass, or a flow-through chamber): you can maintain flow by
using a pressure drop, pitot scoop, or a sample pump. When using a sample pump, place
the pump upstream from the meter.
1.4.3 Entrained gas considerations
Entrained gas, or gas pockets, can disrupt the measurement of a fluid. A brief disruption in
the signal caused by transient gas pockets can be corrected in the meter configuration,
but you must avoid more frequent disruptions or serious gas entrainment to ensure
accurate and reliable fluid measurement.
To minimize the possibility of entrained gas:
•Keep pipe lines full of fluid at all times.
•Vent any gas prior to the meter installation location.
•Avoid sudden pressure drops or temperature changes which may cause dissolved
gases to break out of the fluid.
Planning
6 Micro Motion Fork Viscosity Meter
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