Download 244LD Intelligent Displacer Level (Interface) Transmitter

244LD Intelligent Displacer Level (Interface) Transmitter
Summary
244LD intelligent displacer level (interface) level transmitter is designed based on Archimedes
Buoyancy Principle. It can be used for measuring liquid level, interface and density. The latest
model of FDT/DTM technology can provide online calibration and diagnosis, durable in use. A
wide range of material selection is suitable for different medium environment. 244LD intelligent
displacer level (interface) transmitter in extreme temperature and pressure conditions can be
reliable work. This Transmitter is available for any dangerous application. 244LD intelligent
displacer level (interface) transmitter is manufactured by Dandong Top Electronics Instrument
(Group) Co. Ltd and FOXBORO, The transmitting head and other important parts are original
products supplied by FOXBORO, the finished products are as per the original factory standard
(FOXBORO).
Operating Principle
The buoyancy of displacer 4 is transmitted to the
sensor 3 via lever 1 and the torque tube 2. In
measuring range, the voltage is proportional to
the buoyancy, and as the input signal is
transmitted to the electronic amplifier. Through
the electronic amplifier, voltage is converted to
4-20 mA two-wires output signal. In the
two-wires system mode, amplifier is powered by
the signal current circuit.
Any part of the displacer immersed in liquid is
adhering to the principle of Archimedes. By measuring buoyancy change of cylindrical displacer
suspended in liquid, you can measure the liquid level, interface level or density.
When measuring the density and interface level, the displacer should be completely immersed in
liquid. The change of the liquid level must be in range area.
The calculation of buoyancy:
FA= VX·ρ1·g+( V -VX) ·ρ2·g
In the formula：FA：Buoyancy
V：The volume of the displacer
VX：In the liquid density of ρ1, the medium volume displacer swaps out
ρ1：The average of the heavy medium density
ρ2：The average of the lighter medium density
g：The local acceleration of gravity
FG： Buoy its own gravity
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244LD Intelligent Displacer Level (Interface) Transmitter
Technical features
·Power supply：12～42V DC
·Output Signal：4～20mA/20～4mA
·measurement range：300～3000mm(Beyond the range can be produced)
·nominal pressure：≤42.0MPa
·nominal diameter：DN40 or as customers’ request
·ambient temperature：－40℃～+85℃
·operating temperature：－196℃～+500℃
·accuracy rating：0.2class
·load resistance：(Power supply -12V)/0.02A
·LED display：Five digits can be configured to %，mA or other physical unit
·Medium boundary density difference：≥0.08g/cm3
·Torque tube material：standard configuration Inconel600，or Monel、HasetlloyC-276
·chamber material: carbon steel、304、316L or as customers’ request
·displacer material：304、316L or as customers’ request
·Flange standard：HG/T20592-2009、HG/T20615-2009 or as customers’ request
·cable entry：Two NPT1/2(internal thread) or as customers’ request
·explosion-proof：Intrinsically safe ExiaⅡCT4
·protection class：IP66
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244LD Intelligent Displacer Level (Interface) Transmitter
Model Selection Table
Model
144LD1
2
3
A
B
C
D
E
F
S
Code
Code Meaning
Intelligent Displacer Liquid Level Transmitter
Liquid level measurement
Interface level measurement
Density measurement
Top-side mounted type
Top-bottom mounted type
Side-side mounted type
Bottom-side mounted type
Top mounted type
Offset type mounted type
“S” Top-bottom mounted type
Nominal pressure ≤PN2.5MPa、
2.0Mpa(class150)
Nominal pressure：PN4.0MPa
Nominal pressure：PN6.3MPa、5.0MPa(class 300)
Nominal pressure：PN10.0MPa、
11.0MPa(class600)
Nominal pressure：PN16.0MPa、
15.0MPa(class900)
Nominal pressure≤PN26.0MPa(class1500)
Nominal pressure≤PN42.0MPa(class2500) Need to review
1
2
3
4
5
6
7
/
i
Explosion-proof：Intrinsically Safe Type
Chamber material：Carbon Steel
Chamber material：304(other brand according to
the actual material to fill in)
medium temperature：-196℃≤T＜-30℃
medium temperature：-30℃≤T＜+100℃
medium temperature：100℃≤T≤500℃
T
H
L
D
G
/
Range
Attached with coding
F
Z
According to the actual fill in，default unit is mm
Chamber with heating，DN15，PN2.5RF flange
connection (standard configuration)
Chamber with heating ， R1/2 male thread
connection (standard configuration)
Transmitting head is installed at left hand
W
(Note no W for the right type of installation header)
□
244LD- □ □ □
/
□
□
□
/ Range □
Example:
244LD-2C2/iTD/800F：means measuring interface，Side-side mounted type，nominal pressure is 4.0MPa，
Intrinsically safe intelligent transmitter， chamber material is carbon steel，Measuring fluid temperature is
-30℃≤T＜+100℃，range is 800mm， heat chamber is flange interface type.
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244LD Intelligent Displacer Level (Interface) Transmitter
Outline drawing and installation
1. The structure and size
H is the range in the picture below，nominal pressure≤PN6.3MPa .
A top-side mounted type
D Bottom-side mounted type
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B Top-bottom mounted type
E Top mounted type
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C Side-side mounted type
244LD Intelligent Displacer Level (Interface) Transmitter
2 The Installation orientation of smart level controller
Assemble the intelligent level controller to measuring chamber of displacer. Right type of
installation is Controller installed on right of the displacer, torque tube rotates clockwise when
liquid level rises. Left type of installation is Controller installed on the left of the displacer,
torque tube rotates clockwise when liquid level rises.
3 Material and temperature
Process temperature
material
Min.
Max.
cast iron
-29℃
232℃
steel
-29℃
427℃
stainless steel
-198℃
427℃
Monel
-198℃
371℃
Inconel
-198℃
600℃
-198℃
400℃
graphite flake/stainless steel gasket
-198℃
427℃
Monel / P.T.F.E
-73℃
204℃

hastelloy C
4 safety
Safety barrier recommendation table:
Shanghai I.S.Instruments & system Co.,Ltd
LS4041-Ex
Germany P+F company
KFD2-STC3- Ex1
Shanghai Automation Instrument Institute
GS8041- Ex GS8045- Ex
Dandong Top Electronics Instrument (Group) Co.,Ltd.
TP5041- Ex TP5045- Ex
Longfei Group Corporation in China
LF1045
England
MTL3046B MTL5042 MTL706+
Ordering instruction
According to Model Selection Table select operating pressure and temperature
Special wetted material grades
Instrument installation tag No.
Flange standard
Name and density of medium
Instrument accuracy grade
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