7826 Insertion Density Transmitter | Micro Motion Vietnam | Rosemount Vietnam |

Solartron
7826 Insertion Density Transmitter
Description
The 7826 insertion densitometer is a sensor for
continuous real time measurement of fluid density
in pipelines, open or closed tanks.
The 7826 is designed to operate in one of two
configurations - either as a sensor giving a
frequency output to a signal converter (such
as the Solartron 795x), or as a transmitter with
2 integral analog outputs and Modbus RS485
communications. It can be used in process control
where density is the primary control parameter for
the end product, or as an indicator of some other
quality control parameter such as % solids or %
concentration.
Advantages of the 7826
n  Fully integrated ‘fit and forget’ digital density
measurement for monitoring and control
n  Direct analog (4-20mA) output of density, base
density, or special calculation (% solids, °API,
Specific Gravity, etc.)
n  RS485/Modbus communications
n  Low maintenance
n PC configuration tool for diagnostics and data
logging
Typical industries include:
n  �il and petrochemical �il and petrochemical
n  �rewing �rewing
n  �ood �ood
nPharmaceutical
n  �inerals processing (clays, carbonates, �inerals processing (clays, carbonates,
silicates, etc.)
Applications include:
nInterface detection in multi-product pipelines
n  �ass flo����hen used in con�unction ��ith a �ass flo�� ��hen used in con�unction ��ith a
volumetric flo��meter
nSugar refining (°�ri�) Sugar refining (°�ri�)
n  �ort gravity �ort gravity
nSlurries
nCoatings
n  �vaporator control �vaporator control
nProduct mi�ing Product mi�ing
n  �nd point detection in batch reactions �nd point detection in batch reactions
nSolvent separation
Technical specification sheet
IP7826
January 2007 Density
Installation
The 7826 is factory calibratedand no further
calibration is necessary. The calibration is
traceable to UK National Standardsthrough our
UKAS approved laboratory.
The 7826 operates ��ith fluid viscosities of up to
500cP, making is suitable to measure ��ide range
of liquids.
It measures line density and temperature, and
calculates base density using API tables or a
matri�referral as ��ell as parameters such as °API,
°�ri�, % solids, % mass, % volume and Specific
Gravity (there is even a user-defined quadratic
equation calculation available).
The calculation is performed in con�unction ��ith a
signal converter (for the frequency output version)
or inside the transmitter version electronics.
Any of these parameters can be used to drive
integral analog (4-20mA) outputs, (in either the
signal converter or the transmitter) enabling it
to be used as the process variable in control
applications, without the need for additional
processing electronics.
The design of the 7826 ensures accurate and
reliable results. Maintenance is minimal, leading to
lo��er overall operating costs.
Features
Principle of operation
All Solartron liquid density transducers operate on
the same general principle and can be likened to
that of a mass spring system. When a mass on a
spring is displaced and released it will oscillate at
a natural frequency until it comes to a rest due to
viscous damping. �hen a driving force is applied
to the mass to overcome the effect of damping, the
vibration is maintained in resonance.
As the measured product density changes, it in
turn changes the vibrating mass of the density
transducer, which is then detected by a change in
the resonant frequency.
A variety of installation
accessories, can be provided,
such as weldolets, for direct
pipeline insertion, or flo��-through
chambers, ��hich provide the
optimum environment for the
7826.
Ask for brochure IP7004 for more
details.
Flange connection details Cone seat connection details
795x Signal converter features
Inputs from 7826 long stem:
n  Line density (frequency)
n  Temperature (PT100)
Typical 795�Calculations:
n  Line density
n  Referred density
n  Specific gravity
n  % concentration
n  Specific Gravity
795x �utputs:
n  Status
n  RS 232C/485
n  Analog
Ask for brochure �1251 for more details
Technical specification sheet
IP7826
January 2007 Density
Part number identification
�  Hastelloy C22, standard finish
D  Hastelloy C22, electro-polished
G  Hastelloy C22, PTF�laminated tines
H�onel 400, standard finish
J�onel 400, electro-polished tines
L�onel 400, PTF�laminated tines
* Analog output #2 default setting : Temperature
Code Product
7826 7826 Insertion density transmitter
Code�aterial
A  316 Stainless steel, standard finish
C  316 Stainless steel, electro-polished
F  316 Stainless steel, PTF�laminated tines
V  304 Stainless steel, standard finish
T  Titanium, standard finish
U  Hastelloy �2, standard finish
Z  Special: Use this letter code during quotation request
Code Amplifier system
A  Frequency output AT�X ��X d IIC T4 <200°C
�  Frequency output CSA Class 1 Div 1 Groups C&D, <200°C
C  Advanced: 4-20mA output, AT�X ��X d IIC T4, <200°C
D  Advanced: 4-20mA output, CSA Class 1 Div 1 Groups C&D, <200°C
Code Amplifier housing
A  Aluminium alloy [T4 (-40°C < Ta < +110°C)]
Code Process connections
A  2" ANSI 150 RF
�  2" ANSI 300 RF
C  2" ANSI 600 RF
D  2" ANSI 900 RF
F  2" ANSI 1500 RF
R  50 mm DIN 2527 DN 50/PN 16
Z  Special
Code Stem length
A  0 mm : no stem e�tension and ��ith standard spigot
Code Default configuration 4-20mA output #1*
A  API Degrees (Americas)
� �ase density to API tables (metric configuration)
C  Line density only
D  General process including matri�(user data required)
T  No soft��are configuration - frequency output only
Z  Special
Code Calibration type
L  Density at 20°C
Z  Special
Code  Calibration boundary
A  Free stream
�  2" schedule 40 boundary C  3" schedule 40 boundary
D  2" schedule 80 boundary � 3" schedule 80 boundary
G  3" Hygienic
Z  Special: Use this letter code during quotation request
Code Factory set
� �actory set option
Code Traceability
A  None
X  Certificates of material
traceability
                              
7826 A  C  A  A A   �  L    �   �  X Typical ordering information
G  50 mm DIN 2527 DN 50/PN 40
H  50 mm DIN 2527 RF DN 50/PN 100
K  3" Ladish triclamp (Hygienic)
�  3" IDF (Hygienic)
N  1.5" Cone seat compression fitting
Technical specification sheet
IP7826
January 2007 Density
ADVie��is a soft��are package enabling you to:
n  Configure our density and viscosity transmitters.
n  Vie��and save data from them.
n  Check that they are functioning correctly.
ADVie��is installed on a PC and interacts ��ith the
7826 insertion density transmitter through one of
the PC’s standard serial (RS-232) ports.
ADVie��provides many useful facilities, such as:
n  Setting up serial link to communicate with the
Density operating range:  0 - 3g/cc (0 - 3000kg/m
3
) (0-187.4 lb/ft
3
)
Calibrated range:  0.6 - 1.25g/cc (600-1250kg/m
3
) (38.5-80.25 lb/ft
3
)
Accuracy:  ±0.001g/cc (±1.0kg/m
3
) (±0.06 lb/ft
3
)
Repeatability:  ±0.0001g/cc (±0.1kg/m
3
) (±0.006 lb/ft
3
)
Temperature range:
Process**  -50°C to +200°C (-60°F to +392°F)
Ambient   -40°C to +85°C (-40°F to +185°F)
Pressure range  207bar (3000psi)
(ma� ��orking)
Viscosity range:  up to 500cP
Temperature sensor (integral):  PT100 �S1904 Class �, DIN 43760 Class �
Output signals  Density - frequency, 2 ��ires
(frequency version)  (6V peak nominal)
Temperature - 100 ohm PRT (4 ��ire)
Transmitter version  2 �4-20mA analog output:  Isolated, not self-po��ered
Controlled by:  Any user-selected parameter
Accuracy:  ±0.1% reading, ±0.05%FS @20°C (68°F)
Repeatability:  ±0.05%FS over range -40°C to +85°C(-40°F to +185°F)
RS485 Interface:  9600baud, �odbus (�odicon) RTU
�lectrical connection  Scre��terminal, cable entry to suit 1/2" NPT gland (20mm adaptor available)
�nvironment:  IP66
Po��er Supply:  23 to 25Vdc, 42mA - frequency version
20 to 28Vdc, 35-45mA - transmitter version
Wetted materials:  Stainless Steel
Tine finish:  Standard, PTF�coated or �lectro-polished
Connections:  ANSI 150 to 600RF; DIN 50 PN16, PN40 and PN100
Approvals:  AT�X  II 2G ���d IIC T4
��C�N61326
Specification
7826 density transmitter.
n  Configuring the 7826 long stem density
transmitter.
n  Displaying data in real time, or as a graph.
n  Logging data to a file.
n  Verifying correct operation of  the system, and
diagnosing faults.
n  Loading or storing �odbus register values.
n  Read/��rite to individual �odbus registers.
Diagnostic Tool
** NOT�:  �here AT�X is required the process temperature is further limited to -40°C to +150°C / -40°F to +302°F.
USA:
Emerson Process Management
Micro Motion, Inc.
7070 �inchester Circle
�oulder, CO 80301
T +1 303-527-5200
+1 800-522-6277
F +1 303-530-8459
www.micromotion.com
International:
Emerson Process Management
Mobrey Measurement
158 �dinburgh Avenue,
Slough, �erks, SL1 4U�, UK
T +44 1753 756600
F +44 1753 823589
www.mobrey.com
The �merson logo is a trade mark and service mark of �merson �lectric Co.
Micro Motion is a registered trademark of Micro Motion Inc.
Solartron® is a registered trademark of Lloyd Instruments Limited, a subsidiary of Ametek, Inc. All other marks are the property of their respective o��ners.
�e reserve the right to modify or improve the designs or specifications of product and services at any time ��ithout notice.
Technical specification sheet
IP7826
January 2007 Density