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

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:

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:

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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