Micro Motion® Fork Viscosity Meters
Direct insertion viscosity meter installation
Installation Manual
MMI-20020994, Rev AC
June 2016
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.
Emerson Flow customer service
Email:
• Worldwide: flow.support@emerson.com
• Asia-Pacific: APflow.support@emerson.com
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
Saudi Arabia 800 844 9564
UAE 800 0444 0684
Contents
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 ........................................................................6
1.6 Perform a pre-installation meter check ...........................................................................................7
Chapter 2 Mounting .........................................................................................................................9
2.1 Mount in free-stream application (flanged fitting) ..........................................................................9
2.2 Mount in free-stream application (weldolet fitting) ...................................................................... 10
2.3 Mount with a T-piece (flanged fitting) .......................................................................................... 11
2.4 Mount with a flow-through chamber ............................................................................................13
2.5 Mount in an open tank (long-stem meter) ....................................................................................14
2.6 Mount in a closed tank (long-stem meter) ....................................................................................17
2.7 Attach the PFA ring and circlip ......................................................................................................21
2.8 Rotate the electronics on the meter (optional) .............................................................................22
2.9 Rotate the display on the transmitter (optional) ...........................................................................23
Chapter 3 Wiring ........................................................................................................................... 25
3.1 Terminals and wiring requirements .............................................................................................. 25
3.2 Explosion-proof/flameproof or non-hazardous output wiring .......................................................26
3.3 Processor wiring for remote-mount 2700 FOUNDATION™ fieldbus option ....................................30
3.4 Wiring to external devices (HART multidrop) ................................................................................35
3.5 Wiring to signal converters and/or flow computers ...................................................................... 37
Chapter 4 Grounding ......................................................................................................................39
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 pre-installation meter check
1.1 Installation checklist
Verify the contents of the product shipment to confirm that you have all parts and
□
information necessary for the installation.
Verify that the meter calibration-type code corresponds to the pipe size. If it does
□
not, measurement accuracy may be reduced due to the boundary effect.
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 ManualMicro Motion K-Series
Meters: Quick Start Guide.
- 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
Planning
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.
• 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 that are 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 that operating conditions correspond
to the meter calibration-type code and boundary.
• Ensure that all piping connections conform to the local and national regulations and
codes of practice.
• Properly tighten the transmitter housing cover after wiring to maintain ingress
protection and hazardous area approvals.
• After installation, pressure test the meter and the associated pipework to 1½ times
the maximum operating pressure.
• Install thermal insulation in the meter, the inlet, and the bypass-loop pipeline to
maintain stable temperatures. The thermal insulation should cover the process
connection.
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.
2 Micro Motion Fork Viscosity Meter
Power cable recommendations for explosion-proof/flameproof meters
300ft 600ft 900ft 1200ft 1500ft 1800ft 2100ft 2400ft 2700ft 3000ft
B
2 1 . 6V
24 V
14
15
16
17
18
19
20
21
22
23
24
25
26
A
91.44m 182.88m 274.32m 365.76m 457.2m 548.64m 640.08m 731.52m 822.96m 914.4m
0 . 00 0
0.100
0.200
0.300
0.400
0.500
0.600
0.700
10 0m 20 0m 30 0m 40 0m 50 0m 60 0m 70 0m 80 0m 90 0m 100 0m
B
2 1 . 6V
24 V
A
328.084 ft 656.168ft 984.253ft 1312.34ft 1640.42ft 1968.5ft 2296.59ft 2624.67ft 2952.76ft 3280.84ft
Minimum wire gauge (AWG per foot or meter)Figure 1-1:
Planning
A. AWG maximum
B. Distance of installation
Minimum wire area (mm2 per meter or foot)Figure 1-2:
Installation Manual 3
A. Minimum wire area (mm2)
B. Distance of installation
A
STATUS
SCROLL SELECT
Planning
1.4 Other installation considerations
Numerous external factors can affect the meter's successful operation. To ensure that your
system works correctly, consider the factors covered in this section when designing your
installation.
1.4.1 Boundary effect
Boundary effect refers to the distortion in the wave forms in the process fluid that are caused by reflections from the pipe wall. If the pipe wall is within the meter's effective measurement region, the boundary effect produces measurement inaccuracy.
Region of measurement boundary or sensitivity (plan view)Figure 1-3:
A. Sensitive, or effective, region
The factory calibration compensates for the boundary effect. The meter can be calibrated
for 2-inch, 2.5-inch, or 3-inch pipe. If the meter is installed in a pipe that does not match
the calibration size, the compensation will be inaccurate, and process measurement will
be inaccurate.
Verify that the meter was calibrated for the pipe size you plan to use.
4 Micro Motion Fork Viscosity Meter
1.4.2 Flow rates
Maintain constant flow rates and velocities that are 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, the dissipation of bubbles, and the
solid contaminants around the meter.
If you install the meter in a bypass configuration (such as in a flow-through chamber), use a
pressure drop, pitot scoop, or a sample pump to maintain flow. When using a sample
pump, place the pump upstream from the meter.
1.4.3 Entrained gas
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 pipelines full of fluid at all times.
• Vent any gas prior to the meter installation location.
• Avoid sudden pressure drops or temperature changes that may cause dissolved
gases to break out of the fluid.
• Maintain a back pressure on the system that is sufficient to prevent gas breakout.
• Maintain flow velocity at the sensor within the specified limits.
Planning
1.4.4 Solid contamination
To avoid issues related to solids contamination:
• Avoid sudden changes of the fluid velocity that may cause sedimentation.
• Install the meter far enough downstream from any pipework configuration that may
cause centrifuging of solids (such as at a pipe bend).
• Maintain flow velocity at the meter installation that is within the specified limits.
• Use filtration in your process, if necessary.
1.4.5 Temperature gradients and insulation
For high-viscosity fluids, minimize any temperature gradients in the fluid, and in the piping
and fittings immediately upstream and downstream of the meter. Minimizing
temperature gradients reduces the effect of viscosity changes. Micro Motion recommends
using the following guidelines to reduce the thermal effects to your meter installation:
• Always insulate the meter and surrounding pipework thoroughly.
- Avoid insulating the transmitter housing.
- Use rock wool or any equivalent heat jacket material that is at least 1 inch (25
mm) thick, but preferably 2 inches (50 mm) thick.
Installation Manual 5
Planning
- Enclose insulation in a sealed protective casing to prevent moisture ingress, air
circulation, and crushing of the insulation.
- For flow-through chamber installations, use the special insulation jacket
provided by Micro Motion.
• Avoid direct heat or cold on the meter or on the associated upstream or
downstream pipe work that is likely to create temperature gradients.
• If it is necessary to protect against cooling because of flow loss, you can apply
electrical-trace heating. If you use electrical-trace heating, use a thermostat that
operates below the minimum operating temperature of the system.
1.5 Recommended installations for short-stem meters
Micro Motion recommends three standard installations for the short-stem meter to
alleviate any need for onsite calibration. All meters are factory calibrated for these types of
installations and take into consideration the potential boundary effect of each installation.
Table 1-1 highlights these different installations according to specific conditions or
requirements that may exist for your process environment.
Standard installation types: short-stem metersTable 1-1:
Flow-through
Installation type: Free stream T-Piece
Meter placement Meter tines are
inserted directly into
the main fluid flow.
The meter must always
be installed
horizontally and
oriented so that the
gap between the tines
is vertical.
Flow rate 0.3 to 0.5 m/s (at the
meter)
Viscosity Up to 500 cP Up to 100 cP (250 cP in
Temperature –50 °C to 200 °C (–58
°F to 392 °F)
Meter tines are
contained in a side
pocket off the main
flow.
The meter must always
be installed
horizontally and
oriented so that the
gap between the tines
is vertical.
0.5 to 3 m/s (at main
pipe wall)
some cases)
–50 °C to 200 °C (–58
°F to 392 °F)
chamber
Meter tines are
contained in a flowthrough chamber in
which fluid is
circulated from the
main flow.
10 to 30 l/min
Up to 500 cP
–50 °C to 200 °C (–58
°F to 392 °F)
6 Micro Motion Fork Viscosity Meter
Standard installation types: short-stem meters (continued)Table 1-1:
Installation type: Free stream T-Piece
Main flow pipe size • Horizontal pipe:
minimum
diameter, 100 mm
(4 inch)
• Vertical pipe:
minimum
diameter, 150 mm
(6 inch)
Advantages • Simple installation
in large bore pipes
• Ideal for clean
fluids and nonwaxing oils
• Suitable for line
viscosity
measurement and
simple referrals
Recommendations Do not use with:
• Dirty fluids
• Low or unstable
flow rates
• Where step
changes in
viscosity can occur
• For small bore
pipes
Minimum diameter, 50
mm (2 inch)
• Simple installation
in large bore pipes
• Ideal for clean
fluids and nonwaxing oils
• Suitable for line
viscosity
measurement and
simple referrals
Do not use with:
• Dirty fluids
• Low or unstable
flow rates
• Where step
changes in
viscosity can occur
• For small bore
pipes
• Where
temperature
effects are
significant
Planning
Flow-through
chamber
Suitable for all sizes, if
mounted in a bypass
(slipstream)
configuration
• Adaptable
installation to any
diameter main
pipe and for tank
applications
• Ideal for flow and
temperature
conditioning
• Suitable for
complex referrals
and for use with
heat exchangers
• Suitable for step
changes in
viscosity
• Fast response
• Ideal for analyzer
cubicles
• Do not use with
uncontrolled flow
rates.
• Careful system
design is required
to ensure
representative
measurement.
• Frequently requires
the use of a pump.
1.6 Perform a pre-installation meter check
1. Remove the meter from the box.
Installation Manual 7
Planning
CAUTION!
Handle the meter with care. Follow all corporate, local, and national safety regulations
for lifting and moving the meter.
2. Visually inspect the meter for any physical damage.
If you notice any physical damage to the meter, immediately contact Micro Motion
Customer Support at flow.support@emerson.com.
3. Position and secure the meter in a vertical position with the flow arrow pointing
upward.
4. Connect the power wiring, and power up the meter.
Remove the back transmitter housing cover to access the PWR terminals.
Power supply wiring terminalsFigure 1-4:
A. 24 VDC
5. Perform a Known Density Verification (KDV) check.
Use the Known Density Verification procedure to match the current meter
calibration with the factory calibration. If the meter passes the test, then it has not
drifted or changed during shipment.
For more information on performing a KDV check, see the configuration and use
manual that shipped with the product.
8 Micro Motion Fork Viscosity Meter
2 Mounting
Topics covered in this chapter:
• Mount in free-stream application (flanged fitting)
• Mount in free-stream application (weldolet fitting)
• Mount with a T-piece (flanged fitting)
• Mount with a flow-through chamber
• Mount in an open tank (long-stem meter)
• Mount in a closed tank (long-stem meter)
• Attach the PFA ring and circlip
• Rotate the electronics on the meter (optional)
• Rotate the display on the transmitter (optional)
Mounting
2.1 Mount in free-stream application (flanged
fitting)
Prerequisites
Free-stream (flanged) installations are recommended for processes with the following
conditions:
Flow 0.3 to 0.5 m/s (at the meter)
Viscosity 0.5 to 12,500 cP
Temperature -50 °C to 200 °C (–58 °F to 392 °F)
-40 °C to 200 °C (-40 °F to 392 °F) in hazardous
areas
Procedure
See Figure 2-1 for information on installing the meter (with a flanged fitting) in a freestream application.
Important
Always install the meter horizontally and oriented so that the gap between the tines is vertical. This
position helps to prevent the trapping of bubbles or solids on the meter – allowing the solids to sink
and the bubbles to rise. You can use the scribe mark on the spigot (located between the flange and
transmitter) as a reference for the tine orientation. Always orient the meter so the scribe mark is at
either the 12 o’clock or 6 o’clock position.
Installation Manual 9
B
A
STATUS
SCROLL SELECT
Plan view of a vertical pipe installation
Mounting
Free-stream (flanged fitting) meter installationFigure 2-1:
A. 4-inch pipe for horizontal installations; 6-inch (152 mm) pipe for vertical installations
B. Size the recess mount so that the meter tines are inserted fully into the liquid [approximately 2.75 in
(70 mm)].
2.2 Mount in free-stream application (weldolet fitting)
The weldolet for free-stream installations has a 1.5-inch taper lock fitting and is supplied to
be welded on 4-inch, 6-inch, 8-inch or 10-inch pipelines. A weldolet installation ensures
that the tines of the meter are oriented correctly and are fully inserted into the fluid
stream.
Prerequisites
• Free-stream (weldolet) installations are recommended for processes with the
following conditions:
Flow 0.3 to 0.5 m/s (at the meter)
Viscosity 0.5 to 12,500 cP
Temperature –50 °C to 200 °C (–58 °F to 392 °F)
–40 °C to 200 °C (–40 °F to 392 °F) in
hazardous areas
Note
If temperature variations are a critical factor in your process, the reduced thermal mass of the
taper-lock fitting of the weldolet can track changes in temperature more efficiently.
• Before fitting the weldolet, you must bore a 2.1 in (52.5 mm) diameter opening in
the pipeline to accept the meter. You must weld the weldolet to the pipeline
concentrically with the pre-bored hole.
10 Micro Motion Fork Viscosity Meter
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