Emerson MICROMOTION CNG050 Installation Manual Download Page 1 | Manualshive

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Installation Manual

20002586, Rev BB

January 2016

Micro Motion

®

CNG050 Sensors

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Summary of Contents for MICROMOTION CNG050

Page 1: ...Installation Manual 20002586 Rev BB January 2016 Micro Motion CNG050 Sensors ...

Page 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...

Page 3: ...stallation checklist 1 1 2 Best practices 2 1 3 Temperature limits 3 Chapter 2 Mounting 4 2 1 Mount the sensor 4 Chapter 3 Wiring 5 3 1 Options for wiring 5 3 2 Connect 4 wire cable 5 Chapter 4 Grounding 10 Contents Installation Manual i ...

Page 4: ...Contents ii Micro Motion CNG050 ...

Page 5: ...llow the instructions in this manual for wiring between the sensor and the transmitter and then follow the instructions in the transmitter installation manual for power and signal wiring Maximum lengths for Micro Motion cable Table 1 1 Cable type To transmitter Maximum length Micro Motion 4 wire All 4 wire MVD transmitters 1000 ft 300 m without Ex approval 500 ft 150 m with IIC rated sensors 1000 ...

Page 6: ...release from the case Install the meter so that the flow direction arrow on the sensor case matches the actual forward flow of the process Flow direction is also software selectable 1 2 Best practices The following information can help you get the most from your sensor There are no pipe run requirements for Micro Motion sensors Straight runs of pipe upstream or downstream are unnecessary If the se...

Page 7: ... be used where the ambient temperature is outside of the range permissible for the electronics the electronics must be remotely located where the ambient temperature is within the permissible range as indicated by the shaded area of the temperature limit graphs Temperature limits may be further restricted by hazardous area approvals Refer to the hazardous area approvals documentation shipped with ...

Page 8: ... or sensor junction boxes with their conduit openings pointing upward CAUTION Do not lift the sensor by the electronics Lifting the sensor by the electronics can damage the device Mounting the sensor Figure 2 1 Notes Do not use the sensor to support the piping The sensor does not require external supports The flanges will support the sensor in any orientation Mounting 4 Micro Motion CNG050 ...

Page 9: ... core processor with remote transmitter The core processor is already connected to the sensor Connect a 4 wire cable between the core processor and transmitter Refer toSection 3 2 CAUTION Make sure the hazardous area specified on the sensor approval tag is suitable for the environment in which the sensor will be installed Failure to comply with the requirements for intrinsic safety in a hazardous ...

Page 10: ...or the cable length between the core processor and the transmitter Wire gauge Table 3 2 Wire gauge Maximum cable length VDC 22 AWG 0 35 mm2 300 ft 90 m VDC 20 AWG 0 5 mm2 500 ft 150 m VDC 18 AWG 0 8 mm2 1000 ft 300 m RS 485 22 AWG 0 35 mm2 or larger 1000 ft 300 m 3 2 2 Prepare the 4 wire cable Important For user supplied cable glands the gland must be capable of terminating the drain wires Note If...

Page 11: ...edure Done do not perform the shielding procedure Gland supplier User supplied cable gland Lay cable in conduit Drain wires wrapped around shield Gland type Pass the wires through the gland nut and clamping insert Clamping insert Gland nut 1 Strip 4 1 2 inch 115 mm of cable jacket 2 Remove the clear wrap and filler material 3 Strip all but 3 4 inch 19 mm of shielding 1 Strip 4 1 4 inch 108 mm of c...

Page 12: ... clamping insert so the interior end is flush with the braid of the heat shrink Cable shield type Braided armored cable Foil shielded cable Done Terminate the shield and drain wires in the gland Assemble the gland according to vendor instructions Gland supplier Micro Motion cable gland User supplied cable gland From the preparation procedure After heat applied Shield folded back Gland body Gland t...

Page 13: ... transmitter manual Reinstall and tighten the core processor cover From Step 1 or 2 Connect the wires to the core processor terminals Red wire Terminal 1 Power supply Black wire Terminal 2 Power supply White wire Terminal 3 RS 485 A Green wire Terminal 4 RS 485 B Wiring Installation Manual 9 ...

Page 14: ...G 2 0 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 flowmeter to earth or follow ground network requirements for the facility Improper grounding can cause measurement error Procedure Check the joints in the pipeline If the joints in the pipeline are ground bonded the sen...

Page 15: ...Grounding Installation Manual 11 ...

Page 16: ...pore T 65 6777 8211 F 65 6770 8003 Micro Motion 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 2016 Micro Motion Inc All rights reserved The Emerson logo is a ...

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