Emerson Micro Motion Viscomaster Скачать руководство пользователя страница 28 | Manualshive

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background image

Wire mA1 in a HART multi-drop environment

Figure 3-3:

250 Ω

24 VDC

mA1+ HART

A

B

C

E

D

A.

HART Device 1

B.

HART Device 2

C.

HART Device 3

D.

Meter (mA+/HART output)

E.

HART/Field Communicator

CAUTION!

•

To meet the EC Directive for Electromagnetic Compatibility (EMC), use a suitable instrumentation cable to connect
the meter. The instrumentation cable should have individual screens, foil or braid over each twisted pair, and an
overall screen to cover all cores. Where permissible, connect the overall screen to earth at both ends (360° bonded
at both ends). Connect the inner individual screens at only the controller end.

•

Use metal cable glands where the cables enter the meter amplifier box. Fit unused cable ports with metal
blanking plugs.

Wiring

24

Micro Motion Heavy Fuel Viscosity Meter

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Содержание Micro Motion Viscomaster

Страница 1: ...Installation Manual MMI 20021039 Rev AA January 2015 Micro Motion Heavy Fuel Viscosity Meter HFVM Viscomaster Installation Manual ...

Страница 2: ...en 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 M...

Страница 3: ...ter 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 Gro...

Страница 4: ...Contents ii Micro Motion Heavy Fuel Viscosity Meter ...

Страница 5: ... 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...

Страница 6: ...ain ingress protection and hazardous area approvals After installation pressure test the meter and the associated pipework to 1 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...

Страница 7: ... foot or meter Figure 1 1 300ft 600ft 900ft 1200ft 1500ft 1800ft 2100ft 2400ft 2700ft 3000ft B 21 6V 24V 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 A AWG maximum B Distance of installation Planning Installation Manual 3 ...

Страница 8: ...allation 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 me...

Страница 9: ...rify 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 inst...

Страница 10: ...ltration 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...

Страница 11: ...ecommended 1 5 Recommended installations for the HFVM Micro Motion recommends three standard HFVM installations All meters are factory calibrated for these installations and take potential boundary effects into consideration Planning Installation Manual 7 ...

Страница 12: ...er main pipe and for tank applications Ideal for flow and temperature conditioning Fast response Flow rate 1 10 to 330 l min 0 6 to 20 m3 hr 2 6 to 87 US gal min Viscosity Up to 100 cSt Temperature 50 C to 200 C 58 F to 392 F Main flow pipe size 50 mm 2 in Capillary viscosity Placement Tines project into adapter kit with 63 5 mm 2 5 in Schedule 40 boundary Simple replacement of capillary meter Fas...

Страница 13: ...nstallation meter check 1 Remove the meter from the box 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 Connect the power wiring and power up...

Страница 14: ...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 Planning 10 Micro Motion Heavy Fuel Viscosity Meter ...

Страница 15: ... nut 2 2 Mount the meter There are three ways to mount the meter Related information Mount with a flow through chamber Mount with an inline viscosity retrofit kit Mount with a capillary viscosity retrofit kit 2 2 1 Mount with a flow through chamber Flow through chambers are manufactured by Micro Motion and are available with either of the following Welded ends or compression fittings that connect ...

Страница 16: ... 70 bar 204 C subject to process connections Important To ensure that the fluid within the pocket is refreshed in a timely manner verify that flow velocity at the pipe wall and fluid viscosity are within the limits described in this table The thermal mass of the flanges may affect the response time of the meter to temperature changes Procedure See Figure 2 1 for an example installation of a meter ...

Страница 17: ... flow pocket The fittings may be Swagelok or Parker 2 2 2 Mount with an inline viscosity retrofit kit The inline viscosity retrofit kit provides a simple direct replacement for existing meters Typically the flange to flange distance is 150 mm 5 9 in although Micro Motion can accommodate larger versions Usually no pipework changes are necessary CAUTION Observe all corporate and government safety re...

Страница 18: ... is broken and the sensor is obviously loose in the fitting Note If the system is still pressurized you ll be able to lift and hold the meter against the retaining nut Rocking and alternately pushing the sensor in and out of the pocket within the limits allowed by the slackened nut breaks the seal and allows oil under pressure to seep past the lock nut If this leakage is excessive re tighten the l...

Страница 19: ...The capillary viscosity retrofit kit provides a simple direct replacement for existing capillary meters Typically capillary meters operate with their own measurement chamber that attaches to the HFVM No pipework changes are necessary CAUTION Observe all corporate and government safety regulations Wear protective clothing safety glasses and gloves to prevent burns and the absorption of hot oil Prer...

Страница 20: ... is broken and the sensor is obviously loose in the fitting Note If the system is still pressurized you ll be able to lift and hold the meter against the retaining nut Rocking and alternately pushing the sensor in and out of the pocket within the limits allowed by the slackened nut breaks the seal and allows oil under pressure to seep past the lock nut If this leakage is excessive re tighten the l...

Страница 21: ...or the meter has been fitted cold Tighten as necessary 2 Tighten the nut again if necessary 3 Verify that the system has stabilized and is leak free 4 Fit the insulation material Related information Temperature gradients and insulation 2 4 Rotate the electronics on the meter optional You can rotate the transmitter on the meter up to 90 1 Using a 4 mm hex key loosen the cap screw that holds the tra...

Страница 22: ...ckwise to the desired orientation up to 90 3 Secure the cap screw in place and tighten to 60 lb in 6 8 N m 2 5 Rotate the display on the transmitter optional The display on the transmitter electronics module can be rotated 90 or 180 from the original position Mounting 18 Micro Motion Heavy Fuel Viscosity Meter ...

Страница 23: ...l the sub bezel pin terminals are disengaged from the display module Note If the display pins come out of the board stack with the display module remove the pins and reinstall them 5 Rotate the display module to the desired position 6 Insert the sub bezel pin terminals into the display module pin holes to secure the display in its new position 7 If you have removed the display screws line them up ...

Страница 24: ...d to an independent 24 VDC power supply The screw connectors for each output terminal accept a maximum wire size of 14 AWG 2 5 mm2 Important Output wiring requirements depend on whether the meter will be installed in a safe area or a hazardous area It is your responsibility to verify that this installation meets all corporate local and national safety requirements and electrical codes If you will ...

Страница 25: ...2 Wire power and outputs in a HART single loop environment CAUTION Meter installation and wiring should be performed by suitably trained personnel only in accordance with the applicable code of practice Procedure Wire to the appropriate power and output terminals and pins see Figure 3 2 Wiring Installation Manual 21 ...

Страница 26: ... EC Directive for Electromagnetic Compatibility EMC use a suitable instrumentation cable to connect the meter The instrumentation cable should have individual screens foil or braid over each twisted pair and an overall screen to cover all cores Where permissible connect the overall screen to earth at both ends 360 bonded at both ends Connect the inner individual screens at only the controller end ...

Страница 27: ...rnal HART devices with the meter The following information provides wiring diagrams for making those connections in safe and hazardous environments 3 3 1 Wire mA1 in a HART multi drop environment Important To wire power and outputs see Section 3 2 Wiring Installation Manual 23 ...

Страница 28: ...cable to connect the meter The instrumentation cable should have individual screens foil or braid over each twisted pair and an overall screen to cover all cores Where permissible connect the overall screen to earth at both ends 360 bonded at both ends Connect the inner individual screens at only the controller end Use metal cable glands where the cables enter the meter amplifier box Fit unused ca...

Страница 29: ...licable follow these guidelines to ground the meter Use copper wire 18 AWG 0 75 mm2 or larger wire size Keep all ground leads as short as possible less than 1 Ω impedance Connect ground leads directly to earth or follow plant standards CAUTION Ground the meter to earth or follow ground network requirements for the facility Improper grounding can cause measurement error Procedure Check the joints i...

Страница 30: ...United Kingdom Emerson Process Management Limited Horsfield Way Bredbury Industrial Estate Stockport SK6 2SU U K T 44 0870 240 1978 F 44 0800 966 181 Micro Motion Japan Emerson Process Management 1 2 5 Higashi Shinagawa Shinagawa ku Tokyo 140 0002 Japan T 81 3 5769 6803 F 81 3 5769 6844 2015 Micro Motion Inc All rights reserved The Emerson logo is a trademark and service mark of Emerson Electric C...

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