Micro Motion® CNG050 Sensors
Installation Manual
20002586, Rev BB
January 2016
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 complete ATEX Installation Drawings and Instructions are available on
the internet at www.micromotion.com or through your local Micro Motion support center.
Information affixed to equipment that complies with the Pressure Equipment Directive can be found on the internet at
www.micromotion.com/documentation.
For hazardous installations in Europe, refer to standard EN 60079-14 if national standards do not apply.
Other information
Full product specifications can be found in the product data sheet. Troubleshooting information can be found in the transmitter
configuration manual. Product data sheets and manuals are available from the Micro Motion web site at
www.micromotion.com/documentation.
Return policy
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.com, or by phoning the
Micro Motion Customer Service department.
Emerson Flow customer service
Email:
• Worldwide: flow.support@emerson.com
• Asia-Pacific: APflow.support@emerson.com
Telephone:
North and South America Europe and Middle East Asia Pacific
United States 800-522-6277 U.K. 0870 240 1978 Australia 800 158 727
Canada +1 303-527-5200 The Netherlands +31 (0) 704 136 666 New Zealand 099 128 804
Mexico +41 (0) 41 7686 111 France 0800 917 901 India 800 440 1468
Argentina +54 11 4837 7000 Germany 0800 182 5347 Pakistan 888 550 2682
Brazil +55 15 3413 8000 Italy 8008 77334 China +86 21 2892 9000
Venezuela +58 26 1731 3446 Central & Eastern +41 (0) 41 7686 111 Japan +81 3 5769 6803
Russia/CIS +7 495 981 9811 South Korea +82 2 3438 4600
Egypt 0800 000 0015 Singapore +65 6 777 8211
Oman 800 70101 Thailand 001 800 441 6426
Qatar 431 0044 Malaysia 800 814 008
Kuwait 663 299 01
South Africa 800 991 390
Saudi Arabia 800 844 9564
UAE 800 0444 0684
Contents
Contents
Chapter 1 Planning ...........................................................................................................................1
1.1 Installation 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
Installation Manual i
Contents
ii Micro Motion CNG050
1 Planning
Topics covered in this chapter:
• Installation checklist
• Best practices
• Temperature limits
1.1 Installation checklist
Make sure that the hazardous area specified on the approval tag is suitable for the
□
environment in which the meter will be installed.
Verify that the local ambient and process temperatures are within the limits of the
□
meter.
If your sensor has an integral transmitter, no wiring is required between the sensor
□
and transmitter. Follow the wiring instructions in the transmitter installation manual
for signal and power wiring.
If your transmitter has remote-mounted electronics, follow 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.
Planning
Maximum lengths for Micro Motion cableTable 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 ft (300 m) with IIB rated
sensors
Maximum lengths for user-supplied 4-wire cableTable 1-2:
Wire function Wire size Maximum length
Power (VDC) 22 AWG (0,35 mm2) 300 ft (90 m)
20 AWG (0,5 mm2) 500 ft (150 m)
18 AWG (0,8 mm2) 1000 ft (300 m)
Signal (RS-485) 22 AWG (0,35 mm2) or larger 1000 ft (300 m)
The sensor will work in any orientation as long as the flow tubes remain full of
□
process fluid.
Installation Manual 1
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