Emerson Micro Motion Viscomaster Manual de usuario

Installation Manual

MMI-20021039, Rev AA

January 2015

Micro Motion® Heavy Fuel Viscosity Meter

(HFVM) Viscomaster™

Installation Manual

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: [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

Saudi Arabia 800 844 9564

UAE 800 0444 0684

Contents

Chapter 1 Planning ...........................................................................................................................1

1.1 Installation checklist .......................................................................................................................1

1.2 Best practices .................................................................................................................................1

1.3 Power requirements .......................................................................................................................2

1.4 Other installation considerations ....................................................................................................4

1.5 Recommended installations for the HFVM ..................................................................................... 7

1.6 Perform a pre-installation meter check ...........................................................................................9

Chapter 2 Mounting .......................................................................................................................11

2.1 Prepare the installation ................................................................................................................ 11

2.2 Mount the meter ..........................................................................................................................11

2.3 Install thermal insulation ..............................................................................................................17

2.4 Rotate the electronics on the meter (optional) .............................................................................17

2.5 Rotate the display on the transmitter (optional) ...........................................................................18

Chapter 3 Wiring ........................................................................................................................... 20

3.1 Terminals and wiring requirements .............................................................................................. 20

3.2 Wire power and outputs in a HART single-loop environment ........................................................21

3.3 Wiring to external devices (HART multidrop) ................................................................................23

Chapter 4 Grounding ......................................................................................................................25

Contents

Installation Manual i

Contents

ii Micro Motion Heavy Fuel Viscosity Meter

1 Planning

Topics covered in this chapter:

•Installation checklist

•Best practices

•Power requirements

•Other installation considerations

•Recommended installations for the HFVM

•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.

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.

•If you have an HFVM with calibration code B (viscosity and density calibration),

perform a Known Density Verification (KDV) check of the meter prior to installing

the meter.

•For the DLC-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.

•Do not use liquids that are incompatible with the materials of construction.

Planning

Installation Manual 1

•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.

•Follow fluid velocity guidelines and install the tines vertically for side insertion.

•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.

Planning

2 Micro Motion Heavy Fuel Viscosity Meter

Power cable recommendations for explosion-proof/flameproof meters

Minimum wire gauge (AWG per foot or meter)Figure 1-1:

300ft 600ft 900ft 1200ft 1500ft 1800ft 2100ft 2400ft 2700ft 3000ft

21.6V

24V

91.44m 182.88m 274.32m 365.76m 457.2m 548.64m 640.08m 731.52m 822.96m 914.4m

A. AWG maximum

B. Distance of installation

Planning

Installation Manual 3

Minimum wire area (mm2 per meter or foot)

Figure 1-2:

0.000

0.050

0.100

0.150

0.200

0.250

0.300

0.350

0.400

100m 200m 300m 400m 50 0m 600m 700m 800m 900m 1000m

21.6V

24V

328.084 ft 656.168ft 984.253ft 1312.34ft 1640.42ft 1968.5ft 2296.59ft 2624.67ft 2952.76ft 3280.84ft

A. Minimum wire area (mm2)

B. Distance of installation

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.

Planning

4 Micro Motion Heavy Fuel Viscosity Meter

Region of measurement boundary or sensitivity (plan view)Figure 1-3:

STATUS

SCROLL SELECT

A. Long axis

B. Short axis

C. 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.

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.

Planning

Installation Manual 5

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.

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.

-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.

Planning

6 Micro Motion Heavy Fuel Viscosity Meter

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