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Emerson Micro Motion Fork Viscosity Meters manual

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Table of contents for the manual

  • Page 1

    Installation Manual MMI-20020994, Rev AA December 2013 Micro Motion ® Fork Viscosity Meters Direct insertion viscosity meter installation[...]

  • Page 2

    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[...]

  • Page 3

    Contents Chapter 1 Planning ........................................................................................................................... 1 1.1 Installation checklist ........................................................................................................................1 1.2 Best practices ............................[...]

  • Page 4

    Contents ii Micro Motion Fork Viscosity Meter[...]

  • Page 5

    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 part[...]

  • Page 6

    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 [...]

  • Page 7

    Power cable recommendations for explosion-proof/flameproof meters Minimum wire gauge (AWG per feet) Figure 1-1: 300 600 900 1200 150 0 1800 2100 2400 2700 300 0 Dis t anc e of I nst all a t ion (f t) 21 .6V 24 V 14 15 16 17 18 19 20 21 22 23 24 25 26 AWG Maximum Minimum W ire Gauge Minimum wire area (mm 2 per meter) Figure 1-2: 0.00 0 0.05 0 0.10 0[...]

  • Page 8

    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[...]

  • Page 9

    Region of measurement boundary or sensitivity Figure 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[...]

  • Page 10

    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 m[...]

  • Page 11

    • Maintain a back pressure on the system sufficient to prevent gas break out. • Maintain flow velocity at the sensor within the specified limits. 1.4.4 Solids measurement considerations Consider the following to avoid issues related to solids contamination: • Avoid sudden changes of the fluid velocity that may cause sedimentation. • Install[...]

  • Page 12

    Standard installation types: short-stem meters Table 1-1: Installation type: Free stream T-Piece Flow-through chamber Meter placement Meter tines are inserted directly into the main fluid flow. The meter must always be installed horizontally and with the tines oriented to allow flow through or between the gap of the tines. Meter tines are contained[...]

  • Page 13

    Standard installation types: short-stem meters (continued) Table 1-1: Installation type: Free stream T-Piece Flow-through chamber Recommendations Do not use with: • Dirty fluids • Low or unstable flow rates • Where step changes in viscosity can occur • For small bore pipes Do not use with: • Dirty fluids • Low or unstable flow rates •[...]

  • Page 14

    Power supply wiring terminals Figure 1-5: A A. 24 VDC 4. Perform a Known Density Verification (KDV) check. The Known Density Verification procedure is used to verify that the meter's current operation matches the factory calibration. If the meter passes the test, then it has not drifted or changed since its factory calibration. For more inform[...]

  • Page 15

    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 an[...]

  • Page 16

    Free-stream (flanged fitting) meter installation Figure 2-1: B A STATUS SCROLL SELECT Plan view of a vertical pipe installation 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[...]

  • Page 17

    Procedure See Figure 2-2 for information on installing the meter (with a weldolet fitting) in a free- stream application. Important You must always install the meter horizontally and oriented to allow flow in the gap between the tines, irrespective of the pipeline orientation (horizontal or vertical). This position helps to prevent the trapping of [...]

  • Page 18

    Note - Flow velocity at the pipe wall and fluid viscosity must be within the limits shown to ensure that the fluid within the pocket is refreshed in a timely manner. This installation will not respond as rapidly as the free-stream installation to step changes in viscosity. - The thermal mass of the flanges may affect the response time of the meter [...]

  • Page 19

    2.4 Mount with a flow-through chamber Flow-through chambers are manufactured by Micro Motion, and are available with either weld-prepared ends or with flange or compression fittings for connection into the process pipelines. They are available with 1- inch NB, 2-inch NB, or 3-inch NB inlet and outlet pipes. Important The length of the inlet and out[...]

  • Page 20

    Flow-through chamber meter installation Figure 2-4: A A. Optional temperature port Note • This flow-through chamber is a direct-insertion type chamber that does not have a thermowell and uses a ¾ -inch Swagelok connection. • The three compression fittings on the flow pockets ( ½ -inch drain, ¾ -inch temperature probe, and 1- ½ - inch mounti[...]

  • Page 21

    Open-tank meter installation (long stem) Figure 2-5: 2. Confirm the meter tines are away from the tank wall. Meter placement (away from tank wall) Figure 2-6: B A A B A. 50 mm B. 200 mm 3. Confirm the meter tines are immersed in fluid. Mounting Installation Manual 17[...]

  • Page 22

    Meter placement (immersed in fluid) Figure 2-7: 4. Confirm the meter tines are placed away from objects and disturbed flow. Meter placement (distance from objects and disturbed flow) Figure 2-8: A A A. 200 mm 5. If flow exists, confirm the meter tines are aligned so that the flow is directed towards or through the gap between the tines. Mounting 18[...]

  • Page 23

    Meter placement (flow direction through tine gap) Figure 2-9: 6. Confirm the meter tines are kept away from deposit buildup. Meter placement (away from deposit buildup) Figure 2-10: 2.6 Mount in a closed tank (long-stem meter) 1. Attach the long-stem meter using the fitted flange attachment (shipped with the product). Mounting Installation Manual 1[...]

  • Page 24

    Closed-tank installation (fitted flange attachment) Figure 2-11: 2. (Optional) To vary the insertion depth of the meter, mount the meter on a standoff section that attaches to the flange (not provided). Mounting 20 Micro Motion Fork Viscosity Meter[...]

  • Page 25

    Closed-tank installation (with standoff) Figure 2-12: A. Standoff height can vary (provided by customer) 3. Confirm the meter tines are away from the tank wall. Meter placement (away from tank wall) Figure 2-13: B A A B A. 50 mm B. 200 mm 4. Confirm the meter tines are immersed in fluid. Mounting Installation Manual 21[...]

  • Page 26

    Meter placement (immersed in fluid) Figure 2-14: 5. Confirm the meter placement has allowed for the flexing of the tank lid to prevent the meter from being pushed towards a tank wall or into the path of disturbed flow. Meter placement (allowance for tank lid flexing) Figure 2-15: A A A. 200 mm 6. Confirm the meter tines are placed away from objects[...]

  • Page 27

    Meter placement (distance from objects and disturbed flow) Figure 2-16: A A A. 200 mm 7. If flow exists, confirm the meter tines are aligned so that the flow is directed towards or through the gap between the tines. Meter placement (flow direction through tine gap) Figure 2-17: 8. Confirm the meter tines are kept away from deposit buildup. Mounting[...]

  • Page 28

    Meter placement (away from deposit buildup) Figure 2-18: 2.7 Attach the PFA ring and circlip You attach the PFA ring (and circlip) around the boss on the underside of the meter flange to center the meter tines within a 2-inch Schedule 40 or 80 pipe. The circlip holds the ring in place. Note If you are using the Zirconium version of the meter, a sel[...]

  • Page 29

    Attaching a PFA ring and circlip Figure 2-19: B A C A. Circlip (not provided with self-locking PFA rings) B. PFA ring C. PFA ring and circlip attached 2.8 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 transmitter in place. Component[...]

  • Page 30

    2.9 Rotate the display on the transmitter (optional) The display on the transmitter electronics module can be rotated 90° or 180° from the original position. Display components Figure 2-21: B C D A D E A. Transmitter housing B. Sub-bezel C. Display module D. Display screws E. Display cover Procedure 1. Power down the meter. 2. Turn the display co[...]

  • Page 31

    7. If you have removed the display screws, line them up with the matching holes on the sub-bezel, then reinsert and tighten them. 8. Place the display cover onto the main enclosure. 9. Turn the display cover clockwise until it is snug. 10. Power up the meter. Mounting Installation Manual 27[...]

  • Page 32

    Mounting 28 Micro Motion Fork Viscosity Meter[...]

  • Page 33

    3 Wiring Topics covered in this chapter: • Available output terminals and wiring requirements • Explosion-proof/flameproof or non-hazardous output wiring • Processor wiring for remote-mount 2700 FOUNDATION fieldbus ™ option • Wiring to external devices (HART multidrop) • Wiring to signal converters and/or flow computers 3.1 Available ou[...]

  • Page 34

    3.2 Explosion-proof/flameproof or non-hazardous output wiring 3.2.1 Wire the Analog outputs version in an explosion-proof/ flameproof or non-hazardous area 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 output termina[...]

  • Page 35

    Wiring the Analog outputs version Figure 3-1: mA1+ HART RS-485 PWR mA2 A A B RS-485 A RS-485 B C D B B A A A A. 24 VDC B. R load (250 Ω resistance) C. HART-compatible host or controller; and/or signal device D. Signal device Note For operating the milliamp outputs with a 24V supply, a maximum total loop resistance of 657 Ω is allowed. CAUTION! ?[...]

  • Page 36

    3.2.2 Wire the Discrete output version in an explosion-proof/ flameproof or non-hazardous area 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 output terminal and pins (see Figure 3-2 ). Wiring 32 Micro Motion Fork Vis[...]

  • Page 37

    Wiring the Discrete output version Figure 3-2: mA1+ HART RS-485 PWR DO A A B RS-485 A RS-485 B C E D B A A A A. 24 VDC B. R load (250 Ω resistance) C. HART-compatible host or controller; and/or signal device D. R load (500 Ω resistance recommended) E. Discrete input device Note • For operating the milliamp output with a 24V supply, a maximum t[...]

  • Page 38

    • Metal cable glands should be used where the cables enter the meter amplifier box. Unused cable ports should be fitted with metal blanking plugs. 3.3 Processor wiring for remote-mount 2700 FOUNDATION fieldbus ™ option 3.3.1 RS-485 entity parameters for the remote-mount 2700 FOUNDATION fieldbus ™ option DANGER! Hazardous voltage can cause sev[...]

  • Page 39

    RS-485 output and cable entity parameters (continued) Table 3-2: Maximum external inductance (L o ) 260 µH Maximum external inductance/resistance ratio (L o /R o ) 124.4 µH/ Ω 3.3.2 Prepare the 4-wire cable Important For user-supplied cable glands, the gland must be capable of terminating the drain wires. Note If you are installing unshielded c[...]

  • Page 40

    4-wire cable preparation Figure 3-3: Cable layout Run conduit to sensor Metal conduit Wrap the drain wires twice around the shield and cut off the excess drain wires. Micro Motion cable gland Pass the wires through the gland. Terminate the drain wires inside the gland. Cable glands Remove the core processor cover Go to the shielding procedure Done [...]

  • Page 41

    4-wire cable shielding Figure 3-4: Assemble the Gland 1. Fold the shield or braid back over the clamping insert and 1/8 inch (3 mm) past the O-ring. 2. Install the gland body into the conduit opening on the core processor housing. 3. Insert the wires through gland body and tighten the gland nut onto the gland body. Apply the Heat Shrink 1. Slide th[...]

  • Page 42

    • Twisted pair construction. • Applicable hazardous area requirements, if the core processor is installed in a hazardous area. • Wire gauge appropriate for the cable length between the core processor and the transmitter. • Wire gauge of 22 AWG or larger, with a maximum cable length of 1000 feet. 3.3.3 Processor wiring for the remote-mount 2[...]

  • Page 43

    3.4 Wiring to external devices (HART multidrop) You can wire up to three external HART devices with the meter. The following information provides wiring diagrams for making those connections in safe and hazardous environments. Wiring Installation Manual 39[...]

  • Page 44

    3.4.1 Wire external HART devices in an explosion-proof/ flameproof or non-hazardous area Wiring external devices in an explosion-proof/flameproof or non-hazardous area Figure 3-6: 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 Dir[...]

  • Page 45

    3.5 Wiring to signal converters and/or flow computers For meters with a Time Period Signal (TPS) output, you can wire the meter to an signal converter or flow computer directly. The following information provides wiring diagrams for making those connections in safe and hazardous environments. When wiring the meter to an active HART host or signal c[...]

  • Page 46

    3.5.1 Wire to a signal converter/flow computer in an explosion-proof/flameproof or non-hazardous area Wiring to a signal converter/flow computer in an explosion-proof/ flameproof or non-hazardous area Figure 3-7: mA1+ HART RS-485 PWR TPS A A B 24 VDC RS-485 A RS-485 B A B A. Active HART host B. Active signal converter/flow computer CAUTION! • To [...]

  • Page 47

    4 Grounding The meter must be grounded according to the standards that are applicable at the site. The customer is responsible for knowing and complying with all applicable standards. Prerequisites Micro Motion suggests the following guides for grounding practices: • In Europe, EN 60079-14 is applicable to most installations, in particular Sectio[...]

  • Page 48

    Grounding 44 Micro Motion Fork Viscosity Meter[...]

  • Page 49

    Grounding Installation Manual 45[...]

  • Page 50

    *MMI-20020994* MMI-20020994 Rev AA 2013 Micro Motion Inc. USA Worldwide Headquarters 7070 Winchester Circle Boulder, Colorado 80301 T +1 303-527-5200 T +1 800-522-6277 F +1 303-530-8459 www.micromotion.com Micro Motion Europe Emerson Process Management Neonstraat 1 6718 WX Ede The Netherlands T +31 (0) 318 495 555 F +31 (0) 318 495 556 www.micromot[...]