Installation and Operation Manual P/N 1005172, Rev.
©2008, Micro Motion, Inc. All rights reserved. ELITE and ProLink are registered trademarks, and MVD and MVD Direct Connect are trademarks of Micro Motion, Inc., Boulder, Colorado. Micro Motion is a registered trade name of Micro Motion, Inc., Boulder, Colorado. The Micro Motion and Emerson logos are trademarks and service marks of Emerson Electric Co. All other trademarks are property of their respective owners.
Contents Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Your new sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The installation process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Additional information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 7 Step 2. Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Pipe run . . . . . . . . . . . . . . . . . .
Contents continued Troubleshooting ................................... General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Zero drift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Erratic flow rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inaccurate flow rate or batch total . . . . . . . . . . . . . . . . . . . . . . . . Inaccurate density reading . . . . . . . . . . . . . . . . . . . . . . . .
Before You Begin Your new sensor Your new Micro Motion® Model D or DT sensor, or D600 sensor and booster amplifier, is one part of a Coriolis flowmetering system. The other part is a transmitter. Transmitter connections Model D sensors are available with a factory-supplied 9-wire junction box for connecting to a remotely mounted transmitter, or to a remotely mounted core processor. Model DT sensors are available with a 3-foot (1-meter) pigtail of cable that connects to a user-supplied junction box.
Before You Begin continued The D600 sensor and booster amplifier are available in any of the configurations described in Table 2. Table 2 also lists the transmitters that can be used with each configuration. Table 2.
Before You Begin continued DS025, DH025, DH038, and DS040 sensors Junction box Flow direction arrow Process connection Purge connections (optional) Calibration tag Approvals tag Ground screw Sensor housing DS065, DS100, DH100, DS150, DH150, DS300, and DH300 sensors Junction box Flow direction arrow Process connection Purge connection (optional) Calibration tag Sensor housing Approvals tag Purge connection (optional) Ground screw Micro Motion® Model D and DT Sensors Instruction Manual 3
Before You Begin continued D600 sensor with integral booster amplifier and junction box Process connection Junction box Booster amplifier Flow direction arrow Approval tag Calibration tag Customer tag (if requested) Sensor housing Snub-mount connector D600 sensor with integral booster amplifier and core processor Process connection Core processor Flow direction arrow Calibration tag Booster amplifier Approval tag Customer tag (if requested) Sensor housing Snub mount connector 4 Micro Motion® Mo
Before You Begin continued D600 sensor with remote booster amplifier and junction box Factory-supplied wiring Explosion-proof wiring Intrinsically safe wiring Process connection Approval tag Flow direction arrow Calibration tag Approval tag Customer tag (if requested) Junction box Remote booster amplifier Sensor housing Snub-mount connector D600 sensor with remote booster amplifier and core processor Intrinsically safe wiring Factory-supplied wiring Explosion-proof wiring Process connection Ap
Before You Begin continued DT065, DT100, and DT150 sensors Lifting handle Flow direction arrow Process connection Calibration tag Approvals tag Ground screw Sensor housing Sensor cable with flexible conduit The installation process Installing your new sensor involves five steps: Step 1. Location Determining the proper location for the sensor, taking into account hazardous areas, process piping, transmitter location, and valves. See page 9. Step 2.
Before You Begin continued Additional information In addition to installation instructions, the following subjects are also covered in this manual: • Troubleshooting for problems that might be attributable to the sensor begins on page 41. • Purge fittings are described in Appendix A, page 55. • Rupture disks are discussed in Appendix B, page 59. • Maintenance of labels is covered in Appendix C, page 61. • Return policy for Micro Motion equipment is described in Appendix D, page 65.
8 Micro Motion® Model D and DT Sensors Instruction Manual
Installation Step 1 Location Keys for sensor location The sensor may be located anywhere in the process line, as long as the following conditions are met: • Before operation, you must be able to stop flow through the sensor. (During the zeroing procedure, flow must be stopped completely, and the sensor must be full of process fluid.) • The sensor must be installed in an area that is compatible with the classification specified on the sensor approvals tag. (See illustrations, pages 3-6.
Location continued DT sensor junction box Model DT sensors come with a 3-foot (1 meter) pigtail of cable pre-installed. A junction box can be installed at the end of this pigtail. Environmental limits Sensor temperature limits Temperature limits vary by sensor; refer to Table 2. Table 2.
Location continued Hazardous area installations Make sure the hazardous area specified on the sensor approvals tag is suitable for the environment in which the sensor is installed. (See illustrations on pages 3-6.) For installation in an area that requires intrinsic safety, refer to Micro Motion hazardous approval documentation, shipped with the sensor or available from the Micro Motion web site. For hazardous installations in Europe, refer to standard EN 60079-14 if national standards do not apply.
12 Micro Motion® Model D and DT Sensors Instruction Manual
Installation Step 2 Orientation Keys for sensor orientation The sensor will function properly in any orientation if the sensor flow tubes remain filled with process fluid. Flow direction Micro Motion sensors measure accurately regardless of flow direction as long as the sensor flow tubes remain filled with process fluid. Flow direction arrow The sensor has a flow direction arrow (see illustrations, pages 3-6) to help you configure the transmitter for flow direction.
Orientation continued Orientations for measuring liquids Sensor model DS025 DH025 DH038 DS040 Preferred orientation for measuring liquids Tubes down Horizontal pipeline Alternative orientation for measuring liquids Tubes up Horizontal pipeline Self-draining Flag mount Vertical pipeline Flow DS065 DS100 DH100 DS150 DH150 DS300 DH300 D600 Tubes down Horizontal pipeline DT65 DT065 DT100 DT150 Tubes down Horizontal pipeline Tubes up Horizontal pipeline Self-draining Flag mount Vertical pipeline Flow
Orientation continued Orientations for measuring gases Sensor model DS025 DH025 DH038 DS040 Preferred orientation for measuring gases Tubes up Horizontal pipeline Self-draining Alternative orientation for measuring gases Flag mount Vertical pipeline Dry gases only Tubes down Horizontal pipeline Flow DS065 DS100 DH100 DS150 DH150 DS300 DH300 D600 Tubes up Horizontal pipeline Self-draining DT65 DT065 DT100 DT150 Tubes up Horizontal pipeline Self-draining Flag mount Vertical pipeline Dry gases only
Orientation continued Orientations for measuring slurries Sensor model DS025 DH025 DH038 DS040 Preferred orientation for measuring slurries Alternative orientation for measuring slurries Flag mount Vertical pipeline Tubes up Horizontal pipeline Self-draining Flow DS065 DS100 DH100 DS150 DH150 DS300 DH300 D600 Flag mount Vertical pipeline DT65 DT065 DT100 DT150 Flag mount Vertical pipeline Tubes up Horizontal pipeline Self-draining Flow Tubes up Horizontal pipeline Self-draining Flow 16 Micro
Installation Step 3 Mounting Keys for sensor mounting Use your common piping practices to minimize: • Torque on process connections • Bending load on process connections Mounting any D or DT sensor • For proper orientation, see pages 14-16 • For optional D600 mounting, see page 18 CAUTION Using the sensor to support piping can damage the sensor or cause measurement error. Do not use sensor to support pipe.
Mounting continued Conduit openings If possible, install wiring with the conduit openings pointed downward to reduce the risk of condensation or excessive moisture in the housing. Otherwise, install drip legs on the cable or conduit. Optional Model D600 mounting When installing a Model D600 in a high-vibration area, additional support may be added if desired. Use the D600 snub-mount connector with vibration isolator to help support the sensor. See illustration, below.
Installation Step 4 Wiring Hazardous area installations The following warning applies to hazardous area installations WARNING Failure to comply with requirements for intrinsic safety in a hazardous area could result in an explosion. • Make sure the hazardous area specified on the sensor approvals tag is suitable for the environment in which the sensor is installed. See illustrations, pages 3-6.
Wiring continued Model D sensor junction box 3/4" NPT female conduit opening Drip leg in conduit or cable Model DT sensor cable and junction box Model DT sensors can use a junction box. Model DT sensors come with a 3-foot (1 meter) pigtail of pre-installed cable and a 3-foot (1 meter) piece of conduit that needs to be fitted over the pre-installed cable. See illustration on page 21. • Slide the conduit over the pre-installed cable. • Screw the conduit fitting end into the sensor.
Wiring continued Model DT sensor cable 3 ft. (1 m) factory-supplied flex conduit • Liquid tight to meet CE requirements for European installations • Permanently attached to sensor 1/2" NPT conduit fitting • Factory-supplied fitting • Ensure 360 ° contact Drip leg 1/2" NPT conduit fitting Grounding screw Connecting and shielding 9-wire cable A 9-wire connection is required between the junction box and the core processor or transmitter.
Wiring continued 1. Locate the wires by color and terminal number. 2. Insert the stripped ends of the individual wires into the terminal blocks. No bare wires should remain exposed. • At the sensor, connect wiring inside the junction box. • At the transmitter, connect wiring to the transmitter’s intrinsically safe terminals for sensor wiring. 3. Tighten the screws to hold the wires in place. 4.
Wiring continued Model D or DT sensor (except D600) wiring to Model 3700 Model D or DT sensor terminals Flowmeter cable Model 3700 terminals Maximum cable length 1000 ft.
Wiring continued Model D or DT sensor (except D600) wiring to RFT9712 transmitter Model D or DT sensor terminals Flowmeter cable RFT9712 terminals Maximum cable length 1000 ft. (300 m) Brown Orange Green Violet White Black (Drains from all wire sets) Brown Red Clip drain wire back Green White Clip drain wire back Blue Gray Clip drain wire back Orange Violet Yellow Clip drain wire back Brown Red Orange Yellow Green Blue Violet Gray White For DT sensor junction box information, see page 20.
Wiring continued D600 sensor For wiring between the sensor and transmitter, there are two options: junction box or core processor. • For wiring instructions from junction box to transmitter, see page 29. • For wiring from core processor to transmitter or for direct host, see page 32. The D600 also requires wiring to an AC power supply for the integral and remote version of the booster amplifier. Between 85-250 VAC of power must be provided. See pages 26-27.
Wiring continued Power supply wiring to the remote booster amplifier • Remove screw and terminal cover before installing wiring. Re-install cover before operating. • Provide 85-250 VAC power to terminals L2 and L1 as shown in the diagram below. • This unit is provided with an external terminal for supplementary bonding connections. This terminal is for use where local codes or authorities permit or require such connections.
Wiring continued Power supply wiring to the integral booster amplifier Provide 85-250 VAC power to terminals L2 and L1 as shown in the diagram below. This unit is provided with an external terminal for supplementary bonding connections. This terminal is for use where local codes or authorities permit or require such connections.
Wiring continued Wiring from the remote booster amplifier to the sensor For intrinsically safe junction box wiring (see left side of figure below): • Terminate factory-supplied 9-wire cable. Match wire colors to the corresponding terminal wire colors from the remote booster amplifier. • Orange wire in cable does not have corresponding orange wire from sensor. Note: Terminate the orange wire in cable to the terminal shown in diagram below.
Wiring continued Remote booster amplifier drive wiring Remove screw and terminal cover before installing wiring.
Wiring continued 1. Locate the wires by color and terminal number. 2. Insert the stripped ends of the individual wires into the terminal blocks. No bare wires should remain exposed. • At the sensor, connect wiring inside the junction box. • At the transmitter, connect wiring to the transmitter’s intrinsically safe terminals for sensor wiring. 3. Tighten the screws to hold the wires in place. 4.
Wiring continued Model D600 wiring to Model 3700 Model D600 sensor junction box terminals Flowmeter cable Model 3700 terminals Maximum cable length 1000 ft.
Wiring continued Model D600 wiring to RFT9712 transmitter Model D600 sensor terminals Flowmeter cable RFT9712 terminals Maximum cable length 1000 ft.
Wiring continued - With armored cable, where the shield consists of braid, prepare the cable as described below, but do not apply heat shrink. Proceed to Step 2. 2. Remove the cover from the core processor. 3. Slide the gland nut and the clamping insert over the cable. 4 1/2 in (114 mm) 3/4 in (19 mm) Gland nut Gland clamping insert 7/8 in (22 mm) Shielded heat shrink 7/8 in (22 mm) Gland body 4.
Wiring continued Shielded heat shrink completely covers exposed drain wires g. Position gland clamping insert so the interior end is flush with the heat shrink. h. Fold the cloth shield or braid and drain wires over the clamping insert and approximately 1/8 inch (3 mm) past the O-ring. i. Install the gland body into the core processor housing conduit opening. 5. Insert the wires through the gland body and assemble the gland by tightening the gland nut. 6. Identify the wires in the 4-wire cable.
Wiring continued Power supply + (Red wire) RS-485B (Green wire) RS-485A (White wire) Power supply – (Black wire) Core processor housing internal ground screw • For connections to earth ground when sensor cannot be grounded via piping and local codes require ground connections to be made internally • Do not connect shield drain wires to this terminal 7. Reattach the core processor housing. WARNING Twisting the core processor will damage the sensor. Do not twist the core processor. 8.
Wiring continued Core processor terminals Power supply + RS-485B RS-485A Power supply – Sensor grounding Ground the sensor and transmitter independently. CAUTION Improper grounding could cause measurement error. To reduce the risk of measurement error: • Ground the flowmeter to earth, or follow ground network requirements for the facility.
Wiring continued Sensor grounding screw Model D600 sensors Micro Motion® Model D and DT Sensors Instruction Manual Other Model D sensors Model DT sensors 37
38 Micro Motion® Model D and DT Sensors Instruction Manual
Installation Step 5 Startup Zeroing After the flowmeter has been fully installed, you must perform the zeroing procedure. Flowmeter zeroing establishes flowmeter response to zero flow and sets a baseline for flow measurement. Refer to the transmitter instruction manual for information on performing the zeroing procedure. Configuration, calibration, and characterization You can use the transmitter to configure, calibrate, and characterize the meter.
Startup continued Customer Service The Micro Motion Customer Service Department is available for assistance with flowmeter startup if you experience problems you cannot solve on your own. If possible, provide us with the model numbers and/or serial numbers of your Micro Motion equipment, which will assist us in answering your questions. • In the U.S.A., phone 1-800-522-MASS (1-800-522-6277), 24 hours • In Canada and Latin America, phone +1 303-527-5200 (U.S.A.
Troubleshooting General information Most troubleshooting is performed at the transmitter. However, the following troubleshooting topics are described in this manual: • Zero drift, page 42 • Erratic flow rate, page 43 • Inaccurate flow rate or batch total, page 44 • Inaccurate density reading, page 45 • Inaccurate temperature reading, page 46 If you cannot find the problem you are looking for, check the transmitter instruction manual.
Troubleshooting continued Zero drift Symptom The flowmeter indicates the process fluid is flowing while flow is stopped; or indicates a flow rate that does not agree with a reference rate at low flow, but does agree at higher flow rates. Troubleshooting instructions To troubleshoot zero drift, you will need one of the communications devices listed on page 46 or a transmitter with a display. Refer to the table below for the necessary steps to troubleshoot zero drift. Table 1.
Troubleshooting continued Erratic flow rate Symptom The flowmeter indicates the flow rate is varying, even though it is steady. Troubleshooting instructions To troubleshoot an erratic flow rate, you will need one of the communications devices listed on page 46 or a transmitter with a display. Refer to the table below for the necessary steps to troubleshoot an erratic flow rate. Table 2. Troubleshooting erratic flow rate Procedure 1.
Troubleshooting continued Inaccurate flow rate or batch total Symptom The flowmeter indicates a flow rate or batch total that does not agree with a reference rate or total. Troubleshooting instructions To troubleshoot an inaccurate flow rate or batch total, you will need one of the communications devices listed on page 46 or a transmitter with a display. Refer to the table below for the necessary steps to troubleshoot an inaccurate rate or total. Table 3.
Troubleshooting continued Inaccurate density reading Symptom The flowmeter density measurement is erratic, or is lower or higher than the density of the fluid. Troubleshooting instructions To troubleshoot an inaccurate density reading, you will need one of the communications devices listed on page 46 or a transmitter with a display. Refer to the table below for the necessary steps to troubleshoot an inaccurate density reading. Table 4. Troubleshooting inaccurate density reading Procedure 1.
Troubleshooting continued Inaccurate temperature reading Symptom The flowmeter temperature reading is different than expected. Troubleshooting instructions To troubleshoot an inaccurate temperature reading, you will need one of the communications devices listed on page 46 or a transmitter with a display. Refer to the table below for the necessary steps to troubleshoot an inaccurate temperature reading. Table 5. Troubleshooting inaccurate temperature reading Procedure 1.
Troubleshooting continued Checking for erratic flow rate at the transmitter Before troubleshooting erratic flow rate, you must first determine whether it is a result of the transmitter or a connected output device. Check for an erratic flow signal at the transmitter using any of the following methods. If necessary, refer to the instruction manual (or on-line help for software) for the method you choose.
Troubleshooting continued c. Use a DMM to measure resistance across wire pairs at the transmitter end of the cable. See table on page 48. • If the measured value is within the range listed in the table, reconnect wiring and restore power to the transmitter. • If the measured resistance is outside the range listed in the table, repeat the measurements at the sensor junction box. - If the sensor is a not a D600, refer to the “Nominal resistance ranges” table below.
Troubleshooting continued Checking ohm levels at a D600 sensor (applicable only to sensors with a junction box) D600 sensor with remote mounted booster amplifier (booster amplifier not shown) D600 sensor with integral booster amplifier Check all circuits except drive coil circuit (brown to red wires) here Check drive coil circuit, brown to red here Check all circuits except drive coil circuit (brown to red wires) here Table 7.
Troubleshooting continued Checking the calibration factors Check or change the flow, density, or temperature calibration factors at the transmitter. The temperature cal factor is for the RFT9739, Model 1700, Model 2700, Model 3500, and 3700 only. If necessary, refer to the instruction manual (or on-line help for software) for the method you choose.
Troubleshooting continued • Use the host controller If necessary, test the process fluid to confirm the flowmeter measurement is correct. Checking for RF or transient-voltage interference Radio-frequency (RF) or transient-voltage interference can affect the input or output signals at the transmitter. If you suspect interference, and can eliminate the source, do so before checking the alternatives described below. Output wiring. Output wiring can be affected by interference.
Troubleshooting continued For hazardous area installation in Europe, use standard EN 60079-14 as a guideline if national standards are not in effect.
Troubleshooting continued Open the junction box (and, for a D600, the booster amplifier housing) to check for moisture. If moisture is present, dry out the junction box. Do not use contact cleaner. Follow these guidelines to avoid risk of condensation or excessive moisture from accumulating: • Seal all conduit openings. • Install drip legs in conduit or cable. • If possible, install wiring with junction-box openings pointed down. • Check integrity of gaskets. • Close and fully seal all housing covers.
Troubleshooting continued Often, this occurs because fluid is flowing downward through a sensor installed in a vertical pipeline. (When a sensor is mounted this way, it is called the flag-mount orientation). To help eliminate cascading, fluids should flow upward through a flagmounted sensor. Mounting the sensor in the preferred orientation often reduces cascading. (See Orientation, page 13.) Increasing back pressure downstream from the sensor can also reduce or eliminate cascading.
Appendix A Purge Fittings Keeping purge fittings sealed If the sensor has purge fittings, they should remain sealed at all times. After a purge plug is removed, the sensor case should be purged with a dry, inert gas (such as argon or nitrogen), and resealed. See Case purging procedure, page 56. Purging the case protects internal components. Before Micro Motion ships a sensor from the factory, it purges the sensor case.
Purge Fittings continued Using purge fittings The primary reason for having purge fittings is to monitor pressure inside the sensor case. Some users, such as those measuring highly volatile fluids, install a pressure transmitter across the sensor purge fittings. A control device, connected to the pressure transmitter, shuts down the process if a change in pressure is detected. This provides additional protection should a rupture occur inside the sensor.
Purge Fittings continued 3. Connect the supply of dry, inert gas to the inlet purge connection or open inlet purge line. Leave the outlet connection open. • Exercise caution to avoid introducing dirt, moisture, rust, or other contaminants into the sensor case. • If the purge gas is heavier than air (such as argon), locate the inlet lower than the outlet, so the purge gas will displace air from bottom to top.
58 Micro Motion® Model D and DT Sensors Instruction Manual
Appendix B Rupture Disk Using the rupture disk The primary reason for having a rupture disk is to vent process fluid from inside the sensor case, should the sensor flow tube rupture in a highpressure application. Some users, such as those measuring highpressure gases, install a pipeline at the rupture disk fitting, to help contain escaping process fluid. This provides additional protection should a rupture occur. WARNING Pressure Relief Zone.
60 Micro Motion® Model D and DT Sensors Instruction Manual
Appendix C Label Maintenance and Replacement Maintaining and replacing labels Micro Motion product safety labels have been designed in accordance with the voluntary standard, ANSI Z535.4. If any of the labels illustrated below is illegible, damaged, or missing, promptly have a new one installed. The sensor includes the safety labels illustrated below. Contact Micro Motion for replacement labels: • In the U.S.A.
Label Maintenance and Replacement continued Label number 1004134 D sensor with rupture disk WARNING P/N 1004134 Rev. A Pressure Relief Zone. Escaping pressure can cause severe injury or death. Stay clear of vent. For additional information, see Appendix B, page 59.
Label Maintenance and Replacement continued Label number 3100436 Micro Motion® Model D and DT Sensors Instruction Manual 63
64 Micro Motion® Model D and DT Sensors Instruction Manual
Appendix D Return Policy General guidelines 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.
66 Micro Motion® Model D and DT Sensors Instruction Manual
Index A Air eliminators 54 AMS software 41, 46 Approvals tag keys for sensor location 9 B Batch total inaccurate batch total 44 Before you begin 1–7 additional information 7 installation process 6 your new sensor 1 Booster amplifier sensor location 10 Flowmeter cable . See also Wiring RF interference 51 troubleshooting 47–49 components of 1 grounding 28 troubleshooting 51 startup 39 zeroing 39 G Grounding troubleshooting 51 wiring 28 C Cable .
Index continued Orientation 13 flow direction 13 flow direction arrow 13 keys for installation 13 process fluids 13 vertical pipeline 13 checking calibration factors 49 crosstalk 53 damping value 50 density reading 50 drive gain 50 faulty flowmeter wiring 47–49 faulty output wiring 47 grounding 51 junction box 52 mounting stress 53 plugging 54 RF interference 51 temperature reading 50 2-phase flow 53 vibration 53 condensate valves 54 customer service 41 DMM 41, 46 Fieldbus host 46 flashing 53 general infor
© 2008, Micro Motion, Inc. All rights reserved. P/N 1005172, Rev. C *1005172* For the latest Micro Motion product specifications, view the PRODUCTS section of our web site at www.micromotion.com Micro Motion Inc.
Quick Reference Guide P/N 1005048, Rev. C June 2003 Micro Motion® Model D600 Sensor Installation Instructions For online technical support, use the EXPERT2™ system at www.expert2.com. To speak to a customer service representative, call the support center nearest you: • In the U.S.A., phone 1-800-522-MASS (1-800-522-6277) • In Canada and Latin America, phone (303) 530-8400 • In Asia, phone (65) 6770-8155 • In the U.K., phone 0800 - 966 180 (toll-free) • Outside the U.K.
BEFORE YOU BEGIN This quick reference guide explains basic installation guidelines for Micro Motion® Model D600 sensors. For detailed information, refer to the instruction manual that was shipped with the sensor. European installations This Micro Motion product complies with all applicable European directives when properly installed in accordance with the instructions in this quick reference guide. Refer to the EC declaration of conformity for directives that apply to this product.
Table 1.
Figure 1. D600 sensor with integral booster amplifier and junction box Process connection Junction box for 9-wire cable to transmitter Booster amplifier Flow direction arrow Approvals tag Customer tag (if requested) Calibration tag Sensor housing Snub mount connector Figure 2.
Figure 3. D600 sensor with junction boxes for remote booster amplifier Explosion-proof junction box for 2-wire cable to remote booster amplifier (drive wires) Intrinsically safe junction box for 9-wire cable to remote booster amplifier (signal wires) Figure 4.
STEP 1. Choosing a location Choose a location for the sensor based on the requirements described in this section. General guidelines The following conditions must be met: • Before operation, you must be able to stop flow through the sensor. (During the zeroing procedure, flow must be stopped completely, and the sensor must be full of process fluid.) • During operation, the sensor must remain full of process fluid.
Process fluid temperature and ambient temperature can be further restricted by approvals. For detailed information, see the sensor’s calibration tag.
STEP 2. Orienting the sensor The sensor will function properly in any orientation if the sensor tubes remain filled with process fluid. Micro Motion recommends installing the sensor according to the type of process fluid and the flow direction: • Preferred orientations are shown in Figure 5. • The sensor has a flow direction arrow (see Figure 1) to help you configure the transmitter for flow direction. If possible, install the sensor so that the flow direction arrow matches actual process flow.
Figure 6. Mounting the sensor For installation in a vertical pipeline (flag-mount orientation), the D600 has a snub connector to provide added support in high-vibration installations. See Figure 7. Figure 7.
STEP 4. Wiring the booster amplifier CAUTION Improper installation of wiring could cause measurement error or sensor failure. • Shut off power before installing power-supply wiring. • Follow all instructions to ensure sensor will operate correctly. • Install drip legs in conduit or cable. • Seal all conduit openings. • Ensure integrity of gaskets, grease all O-rings, and fully tighten sensor junction-box cover, booster amplifier cover, core processor cover, and all transmitter housing covers.
3. Connect the ground wire for the power supply to the internal ground screw. This unit is also provided with an external ground screw for use where local codes or authorities permit or require such connections. Figure 8.
Figure 9.
To connect the 2-wire cable (drive wires): 1. Use twisted-pair 18 AWG (0,75 mm2) 2-wire cable. Ensure that the cable is shielded, continuous from the booster amplifier to the sensor’s explosion-proof junction box. Two methods can be used: • Metallic conduit • Shielded or armored cable (do not place the 2-wire cable and 9wire cable in the same cable tray) 2. Connect the wires: a. Connect terminal 1 at the sensor (see Figure 10) to terminal 1 at the booster amplifier (see Figure 11). b.
Figure 11. Remote booster amplifier – 2-wire cable (drive wires) Remove screw and terminal cover before installing wiring. Re-install cover before operating Internal ground screw Drive wiring conduit opening Terminal 2 Terminal 1 External ground screw STEP 5. Wiring the sensor to the transmitter or direct host WARNING Failure to comply with requirements for intrinsic safety in a hazardous area could result in an explosion.
CAUTION Failure to seal sensor and transmitter housings could cause a short circuit, which would result in measurement error or flowmeter failure. • • • • Ensure integrity of gaskets and O-rings. Grease all O-rings before sealing. If conduit is used, install drip legs in conduit. Seal all conduit openings. CAUTION Allowing the shield drain wires to contact the sensor junction box can cause flowmeter errors. Do not allow the shield drain wires to contact the sensor junction box.
Core processor to 4-wire transmitter or direct host If connecting from a D600 sensor with an integral booster amplifier and core processor (see Figure 2) or from a remote booster amplifier with a core processor (see the right side of Figure 4), follow the steps below to connect the 4-wire cable between the core processor and the transmitter or direct host. 1.
4 1/2 in (114 mm) 3/4 in (19 mm) Gland nut Gland clamping insert 7/8 in (22 mm) 7/8 in (22 mm) Gland body Shielded heat shrink 4. For connection at the core processor housing, prepare shielded cable as follows (for armored cable, omit steps d, e, f, and g): a. Strip 4 1/2 inches (114 mm) of cable jacket. b. Remove the clear wrap that is inside the cable jacket, and remove the filler material between the wires. c.
Shielded heat shrink completely covers exposed drain wires g. Position gland clamping insert so the interior end is flush with the heat shrink. h. Fold the cloth shield or braid and drain wires over the clamping insert and approximately 1/8 inch (3 mm) past the O-ring. i. Install the gland body into the core processor housing conduit opening. 5. Insert the wires through the gland body and assemble the gland by tightening the gland nut. 6. Identify the wires in the 4-wire cable.
Figure 12. Connecting the wires at the core processor Power supply + (Red wire) RS-485B (Green wire) RS-485A (White wire) Power supply – (Black wire) Core processor housing internal ground screw • For connections to earth ground when core processor cannot be grounded via sensor piping and local codes require ground connections to be made internally • Do not connect shield drain wires to this terminal 7. Reattach the core processor cover. 8.
• If you are not using a barrier: a. Connect the VDC wires from the core processor (see Figure 12) to an independent power supply. This power supply must connect only to the core processor. A recommended power supply is the SDN series of 24-VDC power supplies manufactured by Sola/Hevi-Duty. b. Do not ground either connection of the power supply. c. Connect the RS-485 wires from the core processor (see Figure 12) to the RS-485 terminals at the direct host.
If national standards are not in effect, follow these guidelines to ground the sensor and remote booster amplifier via the provided ground screws: • Use copper wire, 14 AWG (2,5 mm²) or larger wire size, for grounding. • Keep ground leads as short as possible. • Use less than 1 ohm impedance for ground leads. • Connect ground leads directly to earth, or follow plant guidelines. For instructions on grounding the transmitter, see the transmitter Quick Reference Guide.
© 2003, Micro Motion, Inc. All rights reserved. P/N 1005048, Rev. C *1005048* Visit us on the Internet at www.micromotion.com Micro Motion Inc.
