Micro Motion CDM100P Manuale utente
Installation Manual
MMI-20020974, Rev AC
May 2015
Micro Motion® Compact Density Meters
Peak performance precision density meter installation
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: [email protected]
•Asia-Pacific: [email protected]
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
Chapter 1 Planning ...........................................................................................................................1
1.1 Installation checklist .......................................................................................................................1
1.2 Best practices ................................................................................................................................. 2
1.3 Pressure drop in the meter ............................................................................................................. 5
1.4 Power requirements .......................................................................................................................6
1.5 Perform a pre-installation meter check ...........................................................................................9
Chapter 2 Mounting .......................................................................................................................11
2.1 Mount the meter ..........................................................................................................................11
2.2 Rotate the electronics on the meter (optional) .............................................................................12
2.3 Rotate the display on the transmitter (optional) ...........................................................................13
Chapter 3 Wiring ........................................................................................................................... 15
3.1 Available output terminals and wiring requirements .................................................................... 15
3.2 Explosion-proof/flameproof or non-hazardous output wiring .......................................................16
3.3 Hazardous area output wiring ...................................................................................................... 20
3.4 Processor wiring for remote-mount 2700 FOUNDATION fieldbus™ option ....................................28
3.5 Wiring to external devices (HART multidrop) ................................................................................33
3.6 Wiring to signal converters and/or flow computers ...................................................................... 38
Chapter 4 Grounding ......................................................................................................................41
Contents
Installation Manual i
Contents
ii Micro Motion Compact Density Meter
1 Planning
Topics covered in this chapter:
•Installation checklist
•Best practices
•Pressure drop in the meter
•Power requirements
•Perform a pre-installation meter check
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 meter will be wired to a remote-mount 2700 FOUNDATION fieldbus™
transmitter:
-Refer to the instructions in this manual for preparing the 4-wire cable and wiring
to the processor connections.
-Refer to the instructions in the transmitter installation manual for mounting and
wiring the 2700 FOUNDATION fieldbus™ transmitter. See Micro Motion
Model 1700 and Model 2700 Transmitters: Installation Manual.
-Consider the maximum cable length between the meter and transmitter. The
maximum recommended distance between the two devices is 1000 ft (300 m).
Micro Motion recommends using Micro Motion cable.
□For optimal performance, install the meter in the preferred orientation.
The meter will work in any orientation as long as the vibrating tubes remain full of
the process fluid. However, you should validate the meter performance prior to
operation if you have installed it in a non-preferred orientation.
Preferred meter orientationTable 1-1:
Liquids and slurries
□Install the meter so that the flow direction arrow on the meter case matches the
actual forward flow of the process. (Flow direction is also software-selectable.)
Planning
Installation Manual 1
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.
•Install the meter in the preferred orientation in a vertical pipeline with liquids and
slurries flowing upward.
Important
If you do not install the meter in the preferred orientation, you may need to apply a field
offset to ensure optimal performance. Refer to your organizational standards for sampling
and reference measurement to determine what the offset may be.
•Do not apply a compression force greater than 200 lbs (90.7 kg) when installing the
meter.
•Thermally insulate the meter and the inlet and bypass-loop pipeline to maintain
stable temperatures.
•There are no pipe run requirements for Micro Motion meters. Straight runs of pipe
upstream or downstream are unnecessary.
•Keep the meter tubes full of process fluid.
•For halting flow through the meter with a single valve, install the valve downstream
from the meter.
•Minimize bending and torsional stress on the meter. Do not use the meter to align
misaligned piping.
•The meter does not require external supports. The flanges will support the meter in
any orientation.
•Installing the meter in a bypass configuration allows you to remove the meter for
servicing or calibration without affecting the main pipeline
(Recommended installations for bypass configurations).
1.2.1 Recommended installations for bypass configurations
The following figures illustrate typical bypass configurations for installing the meter.
Planning
2Micro Motion Compact Density Meter
Bypass installation: S-BendFigure 1-1:
Bypass installation: Pressure bendFigure 1-2:
Bypass installation: Laminar flowFigure 1-3:
Important
The laminar flow installation is only recommended for processes using refined, clean fluids with low
viscosity.
Planning
Installation Manual 3
Bypass installation: Pitot tubeFigure 1-4:
A
A. Vent
Bypass installation: Orifice plateFigure 1-5:
A
A. Orifice plate
Planning
4Micro Motion Compact Density Meter
Bypass installation: PumpFigure 1-6:
A
B
C
A. Vent
B. Sample point
C. Pump
1.3 Pressure drop in the meter
The pressure drop in the meter depends on the process conditions. The following figures
illustrate the pressure drop for the meter at varying fluid density and viscosity. In addition,
these charts show how the meter compares to the Micro Motion 7835/7845 liquid density
meters.
Important
For the most accurate pressure drop calculations using your process variables, use the Micro Motion
product selector available at www.micromotion.com.
Planning
Installation Manual 5
Sample pressure drop calculations (fluid viscosity equals 2 cP)Figure 1-7:
0.40
0.30
0.35
0.20
0.25
0.10
0.15
0.05
CDM
0.00
0 2 4 6 8 10 12 14 16
Flow Rate (m3/hr)
Pressure Drop (Bar)
Density = 800 kg/m3
Viscosity = 2 cP
7835 /7845
Sample pressure drop calculations (fluid viscosity equals 10 cP)Figure 1-8:
0.60
0.70
0.40
0.50
0.20
0.30
0.10
CDM100
0.00
0 2 4 6 8 10 12 14 16
Flow Rate (m3/hr)
Pressure Drop (Bar)
Density = 800 kg/m3
Viscosity = 10 cP
7835 /7845
1.4 Power requirements
Following are the DC power requirements to operate the meter:
Planning
6Micro Motion Compact Density Meter
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