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.
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