Optimized design – insensitive to vibration, temperature and pressure variations
■
Unique direct insertion design in lengths of up to 13 ft (4 m)
■
Supports multiple protocols for connection to DCS, PLC, and flow computers
■
Optional stainless steel transmitter housing for corrosion resistance in harsh environments
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Fork Density Meter
November 2018
Micro Motion Fork Density Meters
Micro Motion Fork Density Meters provide precision liquid density measurement in tank and pipeline applications. The Fork Density
Meters use vibrating fork technology to measure density directly, and can be used in process control where density is the primary
control parameter for the end product or as an indicator of another quality control parameter, such as %solids or %concentration.
Application configurations
Integral HART I/O direct input of external temperature, pressure, and flow measurements provide enhanced readings.
Integral transmitter
Supports Time Period Signal (TPS), Analog (4-20 mA), HART, WirelessHART®, Modbus RS-485 and FOUNDATION™ fieldbus
communications.
Meter diagnostics
Ensure measurement health through known density verification (KDV) and other meter and installation diagnostic capabilities.
2www.emerson.com
Power, RS-485
2 x mA Outputs...
Power, RS-485
2 x mA Outputs...
HART
WirelessHART
FOUNDATION
fieldbus
Fork Density Meter
Compatible Devices
Mass Flow
Net solids flow
Full API
Enhanced
concentration
accuracy
Temperature
Magnetic flowPressure
November 2018
Fork Density Meter
Retrofit capabilities
Full backwards compatibility provides the same form and fit as the Micro Motion 7826/7828 direct insertion density meters.
Interconnectivity
Integral HART I/O allows direct input of external temperature, pressure, and flow measurements for enhanced measurements.
ProLink® III software: a configuration and service tool
ProLink III software is an easy-to-use interface that allows you to view key process variables and diagnostics data for your meter. For
more information on ordering the software, contact your local sales representative or email customer support at
flow.support@emerson.com.
www.emerson.com3
Fork Density Meter
Operating principle
Fork vibration
■
A fully welded fork assembly is mounted directly into the liquid to be measured.
■
The fork tines are vibrated piezo-electrically at its natural frequency.
■
The tines' natural frequency changes with the density of the surrounding liquid.
A. Integral transmitter with optional local operator interface
B. Process connection
C. Vibrating tines
D. RTD measures temperature
November 2018
Temperature measurement
■
An integral class “B” RTD measures the vibrating fork temperature.
■
Micro Motion transmitters use this reading to optimize performance over a wide range of process conditions.
Density calibration
■
Micro Motion transmitters accurately measure time period.
■
Measured time periods are converted into density readings using meter calibration coefficients.
A. Density (kg/m3)
B. Time period = 1 / frequency
C. [Time period]2 (μs2)
4www.emerson.com
November 2018Fork Density Meter
Performance specifications
Density measurement
SpecificationValue
Accuracy
Operating density range
(1)
(2)
±1 kg/m
0 to 3000 kg/m
Repeatability±0.1 kg/m
Process viscosity effect
(3)
■
■
Process temperature effect (corrected)
(4)
±0.1 kg/m3 per °C±0.0001 g/cm3 per °C
Process pressure effect (corrected)None
Stated accuracy is for calibrated range 600–1250 kg/m3 (0.6–1.25 g/cm3). Accuracy can be affected by the liquid viscosity. See the product
(1)
configuration manual for more detail on entering an offset for the effects.
The viscosity of the liquid can be up to a maximum of 500 cP.
(2)
For viscosities between 200–500 cP, the process viscosity effect increases with the viscosity up to a maximum of ±19 kg/m3 (±0.019 g/cm3). This
(3)
effect can be significantly reduced by performing an onsite calibration. Viscosity effect shown is for long tine (FDM1). For short tine (FDM2), no
effect for 0-100 cP and reduced effect for 100-500 cP.
Temperature effect is the maximum measurement offset due to process fluid temperature changing away from the factory calibration
(4)
temperature.
3
3
3
No effect for 0–50 cP
±4 kg/m3 (±0.004 g/cm3) for 50–200 cP
±0.001 g/cm
0 to 3.0 g/cm
±0.0001 g/cm
3
3
3
Temperature measurement
Specification
Operating temperature range – short
stem
Operating temperature range – long
stem
Integral temperature measurement
Value
–50 °C to +200 °C–58 °F to +392 °F
–40 °C to +150 °C–40 °F to +302 °F
■
Technology: 100 Ω RTD
■
Accuracy: BS1904 Class, DIN 43760 Class B
Pressure ratings
Actual maximum operating pressures are limited by the process connection rating. For Zirconium flanges, the maximum operating
pressure is dependent on the working temperature.
Specification
Maximum operating pressure – short stem
(1)
Maximum operating pressure – long stem1,450 psi (100 bar)
Test pressureTested to 1.5 times the maximum operating pressure
PED complianceNot applicable
Value
3,000 psi (207 bar)
For short-stem meters with a cone seat fitting, the maximum operating pressure is 1,450 psi (100 bar)
(1)
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Fork Density MeterNovember 2018
Transmitter specifications
Available transmitter versions
For more information on the transmitter outputs and ordering codes, see the Ordering information section.
Analog
Typical applicationOutput channels
ABC
■
General purpose measurement
■
DCS/PLC connection
Processor for remote-mount Model 2700 FOUNDATION fieldbus transmitter
Typical applicationOutput channels
■
General purpose measurement
■
DCS/PLC connection
4–20 mA + HART
(passive)
ABC
DisabledDisabledModbus/RS-485
4–20 mA (passive)Modbus/RS-485
Discrete
Typical application
ABC
Flow Computer/Signal Converter connection4–20 mA + HART
(passive)
Time Period Signal (TPS)
Typical application
ABC
■
General purpose measurement with output
switch
■
DCS/PLC connection
4–20 mA + HART
(passive)
Output channels
Discrete outputModbus/RS-485
Output channels
Time Period Signal (TPS) Modbus/RS-485
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November 2018Fork Density Meter
Local display
DesignFeatures
Physical
Functions
Process measurement variables
VariablesValue
Standard
■
Density
■
Temperature
■
Drive gain
■
External temperature (when external device connected)
■
Segmented two-line LCD screen.
■
Can be rotated on transmitter, in 90-degree increments, for ease of
viewing.
■
Suitable for hazardous area operation.
■
Optical switch controls for hazardous area configuration and display.
■
Glass lens.
■
Three-color LED indicates meter and alert status.
■
View process variables.
■
View and acknowledge alerts.
■
Configure mA and RS-485 outputs.
■
Supports Known Density Verification (KDV).
■
Supports multiple languages.
DerivedThe derived output variables vary, depending on the application configuration of the meter.
■
Referred density (concentration)
■
Referred density (API tables 53A, 53B)
■
Specific gravity (concentration)
■
%Alcohol
■
Alcohol proof
■
°API
■
°Balling
■
°Baume
■
°Brix
■
°Plato
■
%Mass
■
%Solids
■
°Twaddle
■
User-defined calculation output
■
Derived (when external device
connected)
Mass flow
■
Net solids flow
■
Enhanced concentration accuracy
■
Referred density (API tables with live pressure input)
■
Tank mass
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Fork Density MeterNovember 2018
Additional communication options
The following communications accessories are purchased separately from the meter.
TypeDescription
WirelessHARTWirelessHART is available via the THUM adapter
FOUNDATION fieldbusRemote-mount Model 2700 transmitter with FOUNDATION fieldbus
■
One FOUNDATION fieldbus H1 connection provided
HART® Tri-LoopThree additional 4-20 mA outputs are available via connection to a HART Tri-
Loop
Hazardous area approvals
Ambient and process temperature limits are defined by temperature graphs for each meter and electronics interface option. Refer
to the detailed approval specifications, including temperature graphs for all meter configurations, and safety instructions. See the
product page at www.emerson.com.
ATEX, CSA, and IECEx approvals
ATEX
Zone 1 FlameproofWithout display (all transmitters)
With display (Analog, TPS, Discrete versions with
stainless steel transmitter housing material only)
Remote connection to Model 2700 FOUNDATION
fieldbus transmitters
Zone 2Without display (all transmitter versions)
With display (Analog, TPS, Discrete versions with
stainless steel transmitter housing material only)
■
II 1/2G Ex db IIC T6 Ga/Gb
■
II 1/2G Ex db IIC T6 Ga/Gb
■
II 1/2G Ex db [ib] IIC T6 Ga/Gb
■
II 3G Ex nA IIC T6 Gc
■
II 3G Ex nA IIC T4 Gc
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November 2018Fork Density Meter
CSA
Explosion proofWith display (Analog, TPS, Discrete versions with stainless steel transmitter housing material only) or
without display (all transmitter versions)
■
Class I, Division 1, Groups C & D
■
Class I, Division 2, Groups A, B, C & D
■
Class II, Division 1, Groups E, F & G
Non-incendiveWith display (Analog, TPS, Discrete versions) or without display (all transmitter versions)
■
Class I, Division 2, Groups A, B, C & D
IECEx
Zone 1 FlameproofWithout display (all transmitters)
■
Ex db IIC T6 Ga/Gb
With display (Analog, TPS, Discrete versions with stainless steel transmitter housing material only)
■
Ex db IIC T6 Ga/Gb
Remote connection to Model 2700 FOUNDATION fieldbus transmitters:
■
Ex db [ib] IIC T6 Ga/Gb
Zone 2Without display (all transmitter versions)
■
Ex nA IIC T6 Gc
With display (Analog, TPS, Discrete versions with aluminum housing only)
■
Ex nA IIC T4 Gc
With display (Analog, TPS, Discrete versions with stainless steel transmitter housing material only)
■
Ex nA IIC T4 Gc
Environmental specifications
Type
Electromagnetic compatibilityAll versions conform to the latest international standards for EMC, and are certified
Humidity limits5 to 95% relative humidity, non-condensing at 140 ° F (60 °C)
Ambient temperature–40 °C to +65 °C–40 °F to +149 °F
Ingress protection rating
Rating
compliant with EN 61326
■
IP66/67, NEMA4 aluminum housing
■
NEMA4X stainless steel housing
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Fork Density MeterNovember 2018
Power requirements
TypeDescription
DC Power requirements
■
24 VDC, 0.65 W typical, 1.1 W maximum
■
Minimum recommended voltage: 21.6 VDC with 1000 ft of 24 AWG (300 m of 0.20 mm2)
power-supply cable
■
At startup, power source must provide a minimum of 0.5 A of short-term current with a
minimum of 19.6 V at the power input terminals.
Physical specifications
Materials of construction
ComponentMaterial
Wetted partsShort-stem meter
■
304 or 316L stainless steel
■
Alloy C22
■
Titanium
■
Zirconium
Long-stem meter
■
Alloy C22 for meters up to 6.5 ft (2 m) long
■
316L stainless steel for meters up to 13 ft (4 m) long
Tine finishStandard, DLC (Diamond-Like Carbon) coated, or electro-polished
DLC coating is applied only to the tines for anti-stick properties, not for corrosion protection.
Transmitter housingPolyurethane-painted aluminum or 316L stainless steel
Weight
Specification
Weight – short stem (typical)Approximately 15 lbs (7 kg)Approximately 21 lbs (10 kg)
Weight – long stemDependent on stem length (contact customer support)
Weight with aluminum housingWeight with stainless steel housing
10www.emerson.com
November 2018
Fork Density Meter
Dimensions
These dimensional drawings are intended to provide a basic guideline for sizing and planning. For information about obtaining
complete and detailed dimensional drawings, refer to www.emerson.com/density.
Figure 1: Short-stem meter
Note
Dimensions are shown in inches (mm).
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Fork Density MeterNovember 2018
Figure 2: Long-stem meter
Note
■
Dimensions are shown in inches (mm).
■
Stem length can be from 19.7 inches (500 mm) to 13 feet (4 m).
■
Diagrams include the 2-inch (51 mm) CL 150 flange.
Integral processor for remote mount 2700 FOUNDATION™ fieldbus transmitter (Channels A and B inactive)
BIntegral transmitter, Channel B = Time Period Signal, Channel A = mA + HART, Channel C = Modbus/RS-485
CIntegral transmitter, Channel B = mA output, Channel A = mA + HART, Channel C = Modbus/RS-485
DIntegral transmitter, Channel B = Discrete output, Channel A = mA + HART, Channel C = Modbus/RS-485
Requires Model 2700 transmitter with mounting option H - 4 wire connection option (power and communications).
(1)
With Transmitter Output Options code A, all signal outputs on the integrally mounted transmitter are disabled, except for the Modbus/RS-485
(2)
communications which is used for communication to the Model 2700 transmitter.
Available with only application configuration code P.
(3)
CodeDisplay option (available with all approval codes)
(1) (2)
2
Two-line display (non-backlit)
3No display
For transmitter housing option code A, available with only approval codes M, 2, V and 3.
(1)
Not available with transmitter output option code A.
(2)
CodeApprovals
MSafe area - no hazardous area approval
(1)(2)
A
F
(2)(3)
I
(2)(3)
CSA (US and Canada) – Explosion-proof
ATEX - Zone 1 IIC flameproof
IECEx - Zone 1 IIC flameproof
2CSA Class 1, Div 2 (US and Canada)
VATEX - Equipment category 3 (Zone 2)
3IECEx - Zone 2
GCountry-specific approval. Requires an R1 or R2 selection from the Special tests and certificates, tests,
calibrations and services (optional) table.
For transmitter output options code A, CSA approvals code A (C1D1) is valid only for groups C and D.
(1)
Not available with Transmitter Housing Option A with Display Option 2.
(2)
For transmitter output options code A, approvals codes F and I will indicate Exd [ib], not Exd.
(3)
CodeApplication configuration
(1) (2)
Available with all wetted materials codes
00No application configuration
11API degrees (Americas) (4mA = 0°, 20mA = 100°): (Process temperature = 0 °C to 60 °C)
12Line density (4mA = 500kg/m3, 20mA = 1500kg/m3): (Process temperature = -40 °C to +140 °C)
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Fork Density MeterNovember 2018
CodeApplication configuration
(1) (2)
13Referred density to API tables (metric) (4mA = 500kg/m3, 20mA = 1500kg/m3):
(Process temperature = -40 °C to +140 °C)
(3)
50
59
XX
(3)
(4)
% NaOH Concentration (4mA = 0%, 20mA = 50%): (Process temperature = 0 °C to 80 °C)
% KOH Concentration (4mA = 0%, 20mA = 40%): (Process temperature = 0 °C to 90 °C)
Special order (ETO) analog output configuration (customer data required)
Available with wetted materials codes A, C, F, L, E, D, and G only
21% Alcohol (4mA = 0%, 20mA = 20%): (Process temperature = 0 °C to 40 °C)
22% Alcohol (4mA = 50%, 20mA = 100%): (Process temperature = 40 °C to 70 °C)
23% Alcohol (4mA = 80%, 20mA = 100%): (Process temperature = 50 °C to 90 °C)
24Alcohol proof (4mA = 100%, 20mA = 200%): (Process temperature = 5 °C to 70 °C)
25Alcohol proof (4mA = 160%, 20mA = 200%): (Process temperature = 50 °C to 90 °C)
26% Methanol Concentration (4mA = 35%, 20mA = 60%): (Process temperature = 0 °C to 40 °C)
27% Ethylene Glycol Concentration (4mA = 10%, 20mA = 50%): (Process temperature = -20 °C to 40 °C)
31°Brix (sucrose) (4mA = 0°, 20mA = 40°): (Process temperature = 0 °C to 100 °C)
32°Brix (sucrose) (4mA = 30°, 20mA = 80°): (Process temperature = 0 °C to 100 °C)
41°Balling (4mA = 0°, 20mA = 20°): (Process temperature = 0 °C to 100 °C)
64% HFCS - 42 (4mA = 0%, 20mA = 50%): (Process temperature = 0 °C to 100 °C)
65% HFCS - 55 (4mA = 0%, 20mA = 50%): (Process temperature = 0 °C to 100 °C)
66% HFCS - 90 (4 mA = 0%, 20 mA = 50%): (Process temperature = 0 °C to 100 °C)
71°Plato (4mA = 0°, 20mA = 30°): (Process temperature = 0 °C to 100 °C)
Available with wetted materials codes A, C, F, L, E, D, G, and N only
53% H2SO4 Concentration (4mA = 0%, 20mA = 20%): (Process temperature = 0 °C to 24 °C)
Available with wetted materials codes E, D, and G only
54% H2SO4 Concentration (4mA = 0%, 20mA = 93%): (Process temperature = 0 °C to 38 °C)
Available with wetted materials codes E, D, G, and N only
55% H2SO4 Concentration (4mA = 0%, 20mA = 25%): (Process temperature = 0 °C to 50 °C)
Available with wetted materials codes A, C, F, L, E, D, and G only
56% H2SO4 Concentration (4mA = 75%, 20mA = 93%): (Process temperature = 24 °C to 38 °C)
Available with wetted materials codes N and A only
57% HNO3 Concentration (4mA = 0%, 20mA = 70%): (Process temperature = 0 °C to 50 °C)
Available with wetted materials code N only
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November 2018Fork Density Meter
CodeApplication configuration
(1) (2)
58% HNO3 Concentration (4mA = 0%, 20mA = 100%): (Process temperature = 5 °C to 30 °C)
61% HCl Concentration (4mA = 0%, 20mA = 5%): (Process temperature = 0 °C to 90 °C)
62% HCl Concentration (4mA = 0%, 20mA = 32%): (Process temperature = 0 °C to 49 °C)
Available with all wetted materials and transmitter output options code B only
96Process temperature (4 mA = -50 °C, 20 mA = 200 °C)
97Process temperature (4 mA = -50 °C, 20 mA = 150 °C)
98Process temperature (4 mA = 0 °C, 20 mA = 100 C °F)
When transmitter output options code is C or D, the chosen application configuration code 4mA and 20mA are programmed as the Channel A
(1)
mA output 4mA and 20mA points.
For transmitter output options code A, all signal outputs on the integrally-mounted transmitter are disabled apart from the RS485 modbus
(2)
communications used for communication.
Not available with Materials of Wetted Parts code T (Titanium).
(3)
Requires factory option X.
(4)
CodeLanguage (manual and software)
Transmitter display language English
EEnglish installation manual and English configuration manual
IItalian quick installation manual and English configuration manual
MChinese quick installation manual and English configuration manual
RRussian quick installation manual and English configuration manual
Transmitter display language French
FFrench quick installation manual and English configuration manual
Transmitter display language German
GGerman quick installation manual and English configuration manual
Transmitter display language Spanish
SSpanish quick installation manual and English configuration manual
CodeFuture option 1
ZReserved for future use
CodeConduit connections
ZStandard 1/2-inch NPT fittings (no adapters)
BM20 stainless steel adapters
CodeFactory options
ZStandard product
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Fork Density Meter
CodeFactory options
XSpecial order (ETO) product
November 2018
CodeSpecial tests and certificates, tests, calibrations and services (optional)
(1)
Material quality examination tests and certificates
MCMaterial Inspection Certificate 3.1 (Supplier Lot Traceability per EN 10204)
NCNACE Certificate 2.1 (MR0175 and MR0103)
Pressure testing
HTHydrostatic Test Certificate 3.1
Dye penetrant examination
D1Dye Penetrant Test Package 3.1 (Sensor only; Liquid Dye Penetration NDE Qualification)
The Emerson logo is a trademark and service mark of Emerson Electric Co. Micro Motion, ELITE,
ProLink, MVD and MVD Direct Connect marks are marks of one of the Emerson Automation
Solutions family of companies. All other marks are property of their respective owners.