Specifi cations and inf or m ation are subject to change withou t notice.
Up-to-date address information is available on our website.
web: www.sm ar.com/contactus.asp
www.smar.com
Introduction
INTRODUCTION
LD301 is a smart pressure transmitter for differential, absolute, gauge, level and flow
measurements. It is based on a field-proven capacitive sen sor that provides reliable operation and
high performance. The digital technology used in LD301 enables the choice of several types of
transfer functions, an easy interface between the field a nd the control room and several interesting
features that considerably reduce installation, operation and maintenance costs.
Besides all the functions offered by other smart transmitters, LD301offers the following functions:
TABLE - the pressure s ignal is linearly customized according to a 16-point table, enabling, e.g.,
level-to-volume conversion of a horizontal cylindrical tank.
CONTROLLER - the Process Variable is compared to a set point. The deviation acts on the
output signal according to an optional PID algorithm.
PID OUTPUT CHARACTERIZATION - the PID output signal (MV) follows a curve that is
determined by 16 points, which can be freely configured
BIDIRECTIONAL FLOW FUNCTION - used to measure the flow in the piping in both directions.
LOCAL ADJUSTMENT - not Only for Lower and Upper value, but input/output function,
operation mode, indication, set point, PID parameters (optional) as well.
PASSWORD - three levels for different functions.
OPERATION COUNTER - shows the number of changes in each function.
TOTALIZATION - flow totalization in volume or mass.
USER-UNIT - indication in engineering unit of the property actually measured, e.g., level,
flow or volume.
WRITE-PROTECT - via hardware
Get the best results of the LD301 by carefully reading these instructions.
Smar pressure transmitters are protected by U.S. patents 6,433,791 and 6,621,443.
3
)( P- used for trapezoidal weirs in open channel flow measurement.
5
)( P - used for V-notch weirs in open channel flow measurement.
III
LD301 – Operation and Maintenance Instruction Manual
t
r
c
r
y
This manual is compatible with version 6.XX, where 6 notes soft ware version and XX software
release. The indication 6.XX means that this manual is compatible with any release of versio n 6
software
To ensure that our products are safe and without risk to health, the manual must be read carefully
before proceeding and warning labels on packages must be observed. Installation, operation,
maintenance and servicing must only be carried out by suitably trained personnel and in
accordance with the Operation and Maintenance Instruction Manual.
Waiver of responsibility
The contents of this manual abides by the hardware and software used on the current equipmen
version. Eventually there may occur divergencies between this manual and the equipment. The
information from this document are periodically r eviewed and th e necessar y or identified c orrections
will be included in the following editions. Suggestions for their improvement are welcome.
Warning
For more objectivity and clarity, this manual does not contain all the detailed information on the
product and, in addition, it does not cover every possible mounting, operation or maintenance
cases.
Before installing and utilizing the equipment, check if the model of the acquired equipme nt complies
with the technical requirements for the application. This checking is the user’s resp onsibility.
If the user needs more information, or on the event of specific problems not specifie d or treated in
this manual, the information should be sought from Smar. Furthermore, the user recogn izes that the
contents of this manual by no means modify past or present agreements, confirmation or judicial
relationship, in whole or in part.
All of Smar’s obligation result from the purchasing agreement signed between the parties, which
includes the complete and sole valid warrant y term. Contractual clauses r elated to the warrant y are
not limited nor extended by virtue of the technical information contained in this manual.
Only qualified personnel are allowed to participate i n the activities of mounting, electrical connection,
startup and maintenance of the equipment. Qualif ied personnel are understood to be the persons
familiar with the mounting, electrical connection, startup and operation of the equi pment or othe
similar apparatus that are technically fit for their work. Smar provides spec ific training to instruct and
qualify such professionals. However, each country must compl y wit h the local safety procedures,
legal provisions and regulations for the mounting and operation of electrical installations , as well as
with the laws and regulations on classified areas, such as intrinsic safet y, explosi on proo f, increased
safety and instrumented safety systems, among others.
The user is responsible for the incorrect or inadequate h andling of equipments run with pneumati
or hydraulic pressure or, still, subject to corrosive, aggressive or combustible products, since thei
utilization may cause severe bodily harm and/or material damages.
The field equipment referred to in this manual, when acquired for classified or hazardous areas, has
its certification void when having its parts replace d or interchanged without functional and approval
tests by Smar or any of Smar authorized dealers, which are the competent compa nies for certifying
that the equipment in its entirety meets the applic able standards and regulations. The s ame is true
when converting the equipment of a communication protocol to another. In this case, it i s necessar
sending the equipment to Smar or any of its authorized dealer. Moreover, the certificates are
different and the user is responsible for their correct use.
Always respect the instructions provided in the Manual. Smar is not responsible for any losses
and/or damages resulting from the inadequate use of its equipments. It is the user’s respo nsibilit y to
know and apply the safety practices in his country.
GENERAL .................................................................................................................................................................. 1.1
THE DISPLAY ........................................................................................................................................................... 2.6
CONFIGURATION FEATURES ................................................................................................................................ 3.5
MANUFACTURING DATA AND IDENTIFICATION .................................................................................................. 3.5
PRIMARY VARIABLE TRIM - PRESSURE ............................................................................................................... 3.6
PRIMARY VARIABLE CURRENT TRIM ................................................................................................................... 3.7
TRANSMITTER ADJUSTMENT TO THE WORKING RANGE ................................................................................. 3.7
ENGINEERING UNIT SELECTION ........................................................................................................................... 3.8
TRANSFER FUNCTION FOR FLOW MEASUREMENT .......................................................................................... 3.9
SECTION 4 - PROGRAMMING USING LOCAL ADJUSTMENT ................................................................ 4.1
THE MAGNETIC TOOL ............................................................................................................................................. 4.1
SIMPLE LOCAL ADJUST .......................................................................................................................................... 4.2
ZERO AND SPAN RERANGING .............................................................................................................................. 4.3
COMPLETE LOCAL ADJUSTMENT ......................................................................................................................... 4.3
LOCAL PROGRAMMING TREE ............................................................................................................................... 4.3
RANGE (RANGE) ...................................................................................................................................................... 4.9
FUNCTION (FUNCT) ............................................................................................................................................... 4.12
PRESSURE TRIM [TRIM] ....................................................................................................................................... 4.14
ESCAPE LOCAL ADJUSTMENT [ESC].................................................................................................................. 4.15
GENERAL .................................................................................................................................................................. 5.1
DIAGNOSTIC USING CONFIGURATION TOOL ...................................................................................................... 5.1
DIAGNOSTIC VIA TRANSMITTER ........................................................................................................................... 5.2
APPLICATION WITH HALAR .................................................................................................................................. 5.14
TPE – TOTAL PROBABLE ERROR (SOFTWARE) ................................................................................................ 5.14
ORDERING CODE FOR THE SENSOR ................................................................................................................. 5.15
HART® SPECIAL UNITS ........................................................................................................................................ 5.20
NORTH AMERICAN CERTIFICATIONS ................................................................................................................................. A.1
EUROPEAN CERTIFICATIONS ............................................................................................................................................. A.2
SOUTH AMERICA CERTIFICATION ...................................................................................................................................... A.3
ASIA CERTIFICATION ............................................................................................................................................................ A.3
IDENTIFICATION PLATE AND CONTROL DRAWING ............................................................................................ A.3
CONTROL DRAWING ............................................................................................................................................................ A.7
APPENDIX B – SRF – SERVICE REQUEST FORM .................................................................................. B.1
APPENDIX C – SMAR WARRANTY CERTIFICATE ................................................................................. C.1
VI
Transmitter General View
TRANSMITTER GENERAL VIEW
The LD301 uses a hig hly pr oven technique for pressure measuring by capacitance reading. The
block diagram of the LD301 HART
S
i
g
n
a
l
C
I
o
n
n
pu
d
i
t
t
/
O
u
t
pu
4 - 20mA
t
i
o
n
e
r
®
pressure transmitter is shown below.
Zero/Span Local
Adjustment
HT3012
- D/A Converter
- HART Modem
- LCD Controller
- Mathematical
Co-processor
Process Unit
- Range
- Special Functions
- PID
- Output Controller
- Communication
Protocol
- HART
- Advanced Diagnostic
- Firmware Update
Digital
Reading
Isolator
Digital
Sensor
Ceramics
EEPROM with Sensor Data
Temperature Data
Resonant Oscillator
Sensor
Diaphragm (1)
Isolating
Diaphragm (2)
Glass
PH
PL
Metalized
Surface (4)
Filling Fluid (3)
In the cell center is the sensor diaphragm (1). This diaphragm flexes in response to the different
pressures applied on the LOW and HIGH sides of the cell (PL and PH). These pressures are directly
applied on the isolator diaphragms (2), whose function is t o isolate the sensor process and supply
high resistance against corrosion caused by process fluids. The pressure is transmitted directly to
the sensor diaphragm through the filling fluid (3) and causes its deflection. The sensor dia phragm is
a mobile electrode whose two metal surfaces (4) are stab le electrodes. A deflection on the sensor
diaphragm is read by the capacitance variation between both stable and mobile electrodes.
The resonance oscillator reads the capacitance variations between the mobile and the stable boards
and generates a pressure output equivalent to the detected capacitance variation. This pressure
value is informed in compliance with the transmitter communication protocol. As the conversion
process does not involve an A/D converter, any errors or deviations are eliminated during the
process. Temperature compensation is done by a sensor, which combine d with a precision sensor,
results in high accuracy and range.
The process variable, as well as the diagnostic monitoring and information, are supplied by the
digital communication protocol. The LD301 is available in the HART communication protocol.
Read carefully these instructions for better use of the LD301.
VII
LD301 – Operation and Maintenance Instruction Manual
I
nstallation Flowchart
Start
Was the transmitter
configured on the bench
to match the application?
No
Configure the transmitter
(Section 1 and 3)
Configure the measuring range
to 0% (4mA) and 100%
(20mA) (Section 3)
Configure the Fail-Safe
value (Section 3)
Configure the Damping (Section 3)
Configure the LCD reading
(Section 3)
Apply the pressure
Is the reading correct?
Yes
Yes
Install the transmitter on the field
following the instructions below.
Install the transmitter preferably
on weather- protected areas.
Check the area classification
and its practices
Install the transmitter (mechanically
and electrically) according to the
application after checking the best
position for the LCD (Section 5)
Power the transmitter properly.
No
See manual
(Section 5) - Maintenance
OK
Yes
Yes
Yes
Is the impulse line wett leg?
No
Is the transmitter
reading correct?
No
Apply the Zero Trim
Did you correct the
transmitter reading?
No
VIII
Section 1
General
Mounting
INSTALLATION
NOTE
The installation carried out in hazardous areas should follow the recommendations of the IEC 60079-14
standard.
The overall accuracy of a flow, level, or pressure measurement depends on several variables. Although
the transmitter has an outstanding performance, proper installation is essential to maximize its
efficiency.
Among all factors, which may affect transmitter accuracy, environmental conditions are the most difficult
to control. There are, however, ways of reducing the effects of temperature, humidity and vibration.
The LD301 has a built-in temperature sensor to compensate for temperature variations. At the factory,
each transmitter is submitted to a temperature cycle, and the characteristics under different
temperatures are recorded in the transmitter memory. At the field, this feature minimizes the
temperature variation effect.
Putting the transmitter in areas protected from extreme environmental changes can minimize
temperature fluctuation effects.
In warm environments, the transmitter should be installed to avoid, as much as possible, direct exposure
to the sun. Installation close to lines and vessels subjected to high temperatures should also be avoided.
Use longer sections of impulse piping between tap and transmitter whenever the process fluid is at hig h
temperatures. Use of sunshades or heat shields to protect the transmitter from external heat sources
should be considered, if necessary.
Proper winterization (freeze protection) should be employed to prevent freezing within the measuring
chamber, since this will result in an inoperative transmitter and could even damage the cell.
Although the transmitter is virtually insensitive to vibration, installation close to pumps, turbines or other
vibrating equipment should be avoided.
The transmitter has been designed to be both rugged and lightweight at the same time. This makes its
mounting easier. The mounting positions are shown in Figure 1.1.
Existing standards for the manifolds have also been considered, and standard designs fits perfectly to
the transmitter flanges.
Should the process fluid contain solids in suspension, install valves or rod-out fittings regularly to clean
out the pipes. The pipes should be internally cleaned by using steam or compressed air, or by draining
the line with the process fluid, before such lines are connected to the transmitter (blow-down).
NOTE
When installing or storing the level transmitter, the diaphragm must be protected to avoid scratchingdenting or perforation of its surface. The process flange of the level transmitters can be rotated 45º.
To do this just loosen the two screws (Figure 1.1) and rotate the flange. Do not take the screws out.
There is a label (Figure 1.1) on the transmitter with these instructions.
1.1
LD301 – Operation and Maintenance Instruction Manual
Figure 1.1 (a) – Dimensional Drawing and Mounting Position - Differential, Flow, Gage, Absolute and High Static Pressure
Transmitters with Mounting Bracket
1.2
Installation
Figure 1.1 (b) – Dimensional Drawing and Mounting Position - Flanged Pressure Transmitter with Integral Flange
1.3
LD301 – Operation and Maintenance Instruction Manual
Figure 1.1 (c) – Dimensional Drawing and Mounting Position - Flanged Pressure Transmitter with Slip-on Flange
1.4
Installation
Figure 1.1 (d) – Dimensional Drawing and Mounting Position - Flanged Pressure Transmitter with Housing
1.5
LD301 – Operation and Maintenance Instruction Manual
Figure 1.1 (e) – Dimensional Drawing and Mounting Position - Sanitary Transmitter without Extension
1.6
Installation
Figure 1.1 (f) – Dimensional Drawing and Mounting Position - Sanitary Transmitter with Extension
1.7
LD301 – Operation and Maintenance Instruction Manual
WALL OR PANEL MOUNTING
(See Section 5 – spare parts list
for mounting brackets available)
Figure 1.2 – Drawing of LD301 Mounted on the Panel or Wall
Observe operating safety rules during wiring, draining or blow-down.
WARNING
Normal safety precautions must be taken to avoid the possibility of an accident occurring when
operating in conditions of high pressure and/or temperature.
Electrical shock can result in death or serious injury.
Avoid contact with the leads and terminals.
Process leaks could result in death or serious injury.
Do not attempt to loosen or remove flange bolts while the transmitter is in service.
Replacement equipment or spare parts not appro ved by Smar could reduce the pressure
retaining capabilities of the transmitter and may render the instrument dangerous.
Use only bolts supplied or sold by Smar as spare parts.
Some examples of installation, illustrating the transmitter position in relation to the taps, are shown in
Figure 1.3. The pressure taps location and the relative positions of the transmitter are indicated in Table
1.1.
Process Fluid Location of Location of LD301 in Relation to the Taps
Gas Top or Side Above the Taps
Liquid Side Below the Taps or at the Piping Centerline
Steam Side Below the Taps using Sealing (Condensate) Pots
Table 1.1 - Location of Pressure Taps
NOTE
For liquids, condensates, wet vapors and gases the impulse lines must be bent on the ratio 1:10 to
prevent bubbles from accumulating;
The transmitter and its impulse lines must be tightly fixed;
If necessary, install the condensate and mud pots;
Use manifold valves to facilitate maintenance and adjustments.
1.8
Installation
Electronic Housing
Figure 1.3 – Position of the Transmitter and Taps
NOTE
The transmitters are calibrated in the vertical position and a different mounting position displaces the
zero point. Consequently, the indicator will indicate a different value from the applied pressure. In
these conditions, it is recommended to do the zero pressure trim. The zero trim compensates the
final assembly position and its performance, when the transmitter is in its final position. When the
zero trim is executed, make sure the equalization valve is open and the wet leg levels are correct.
For the absolute pressure transmitter, the assembly effects correction should be done using the
Lower trim, due to the fact that the absolute zero is the reference for these transmitters, so there is
no need for a zero value for the Lower trim.
DIAPHRAGM SENSOR
HEAD OF THE FLUID
DIAPHRAGM SENSOR
SENSOR IN THE VERTICAL POSITION
SENSOR IN THE HORIZONTAL POSITION
Humidity is fatal to electronic circuits. In areas subjected to high relative humidity, the O-rings for the
electronic housing covers must be correctly placed and the covers must be completely closed by tighten
them by hand until you feel the O-rings being compressed. Do not use tools to close the covers.
Removal of the electronics cover in the field should be reduced to the minimum necessary, since each
time it is removed; the circuits are exposed to the humidity.
The electronic circuit is protected by a humidity proof coating, but frequent exposures to humidity may
affect the protection provided. It is also important to keep the covers tightened in place. Every time they
are removed, the threads are exposed to corrosion, since painting cannot protect these parts. Sealing
methods should be employed on conduit entering the transmitter. The unused outlet connection should
be properly plugged.
WARNING
The unused cable entries should be plugged and sealed accordingly to avoid humidity entering, which
can cause the loss of the product’s warranty.
1.9
LD301 – Operation and Maintenance Instruction Manual
L
The electronic housing can be rotated to adjust the digital display on a better position. To rotate it, loose
the Housing Rotation Set Screw, see Figure 1.4 (a). To prevent humidity entering, the electric housing
and the sensor joint must have a minimum of 6 fully engaged threads. The provided joint allows 1 extra
turn to adjust the position of the display window by rotating the housing clockwise. If the thread reaches
the end before the desired position, then rotate the housing counterclockwise, but not more than one
thread turn. Transmitters have a stopper that restricts housing rotation to one turn. See Section 5,
Figure 5.2.
(a) (b)
Figure 1.4 - Cover Locking and Housing Rotating Set Screw (a) Electronic Board Side
Wiring
To access the wiring block, loosenthe cover locking screw to release the cover. See Figure 1.4 (b).
Test and Communication terminals allow, respectively, to measure the current in the 4 - 20 mA loop,
without opening the circuit, and also to communicate with the transmitter. The “Test Terminals” must b e
used to measure the current. The “COMM” terminal must be used for HART communication. The
terminal block has screws where fork or ring-type terminals can be fastened. See Figure 1.5.
COVER
LOCKING
SCREW
(b) Terminal Connection Side
POWER
SUPPLY
TERMINALS
AND HART
OPTIONAL GROUND
TERMINAL
COMUNICATIONS
The LD301 is protected against reverse polarity.
®
BUS
TERMINALS
TEST
COMM
LOCK
+
Figure 1.5 – Terminal Block
INTERNAL GROUND
TERMINAL
GROUND TERMINA
TEST
TERMINALS
For convenience there are three ground terminals: one inside the cover and two external, located close
to the conduit inlets.
Use of twisted pair (22 AWG or greater than) cables is recommended. For sites with high
electromagnetic levels (EMI above 10 V/m) shield conductors are recommended.
Avoid routing signal wiring near to power cables or switching equipment.
The Figure 1.6 shows the correct conduit installation, to avoid penetration of water or other substance,
which may cause equipment malfunction.
1.10
Loop Connections
Installation
WIRES
CORRECT
INCORRECT
Figure 1.6 - Conduit Installation
Figures 1.7 and 1.8 show LD301’s wiring diagrams to work as transmitter and controller, respectively.
Figure 1.9 shows the LD301’s wiring diagrams to work in the multi-drop netwo rk. Note that a maximum
of 15 transmitters can be connected on the same line and that they should be connected in parallel.
Take care to the power supply as well, when many transmitters are connected on the same line. The
current through the 250 Ohm resistor will be high causing a high voltage drop. Therefore make sure that
the power supply voltage is sufficient.
The Hand-Held Terminal can be connected to the communication terminals of the transmitter or at any
point of the signal line by using the alligator clips. It is also recommended to ground the shield of
shielded cables at only one end. The ungrounded end must be carefully isolated. On multi-drop
connections, the circuit loop integrity must be assured, with special care to prevent short-circuit between
the circuit loop and the housing.
NOTE
For HART transmitters to operate in multi-drop mode each transmitter must be configured with a
different identity Device ID. In addition, if the transmitter identification mode on the loop is done
through the Command 0 address, the HART address must also be different. If it is done through the
(Command 11) Tag the Tags must be similar.
Figure 1.7 - Wiring Diagram for the LD301 Working as a Transmitter
1.11
LD301 – Operation and Maintenance Instruction Manual
Figure 1.8 - Wiring Diagram for the LD301 Working as a Contro ller
Figure 1.9 - Wiring Diagram for the LD301 in Multidrop Configuration
NOTE
Make sure that the transmitter is operating within the operating area as shown on the load curve
(Figure 1.10). Communication requires a minimum load of 250 Ohm and voltage equal to 17 Vdc.
1.12
Figure 1.10 – Load Limitation
Installation in Hazardous Areas
Explosions could result in death or serious injury, besides financial damage. Installation of this
transmitter in explosive areasmust be carried out in accordanc e with the local standards and the
protection type adopted .Before continuing the installation make sure the certificate parameters are I n
accordance with the classified area where the equipment will be installed.
The instrument modification or parts replacement supplied by other than authorized representative of
Smar is prohibited and will void the certification.
The transmitters are marked with options of the protection type. The certification is valid only when the
protection type is indicated by the user. Once a particular type of protection is selected, any other type
of protection can not be used.
The electronic housing and the sensor installed in hazardous areas must have a minimum of 6 fully
engaged threads. Lock the housing using the locking screw (Figure 1.4).
The cover must be tighten with at least 8 turns to avoid the penetration of humidity or corrosive gases.
The cover must be tighten until it touches the housing. Then, tighten more 1/3 turn (120) to guarantee
the sealing. Lock the covers using the locking screw (Figure 1.4).
Consult the Appendix A for further information about certification.
Explosion/Flame Proof
In Explosion-Proof installations the cable entries must be connected or closed using metal cable gland
and metal blanking plug, both with at least IP66 and Ex-d certification.
As the transmitter is non-ignition capable under normal conditions, the statement “Seal not Required”
could be applied for Explosion Proof Version. (CSA Certification).
The standard plugs provided by Smar are certified according to the standards at FM, CSA and CEPEL.
If the plug needs to be replaced, a certified plug must be used.
The electrical connection with NPT thread must use waterproofing sealant. A non-hardening silicone
sealant is recommended.
Do not remove the transmitter covers when power is ON.
Intrinsically Safe
In hazardous zones with intrinsically safe or non-incendive requirements, the circuit entity para meters
and applicable installation procedures must be observed.
To protect the application the transmitter must be connected to a barrier. Match the parameters
between barrier and the equipment (Consider the cable parameters). Associated apparatus ground
bus shall be insulated from panels and mounting enclosures. Shield is optional. If used, be sure to
insulate the end not grounded. Cable capacitance and inductance plus C
Co and Lo of the associated Apparatus.
For free access to the Hart bus in the explosive environment, ensure the instruments in the loop are
installed in accordance with intrinsically safe or non-incendive field wiring practices. Use only Ex Hart
communicator approved according to the type of protection Ex-i (IS) or Ex-n (NI).
It is not recommended to remove the transmitter cover when the power is ON.
WARNING
WARNING
WARNING
Installation
and Li must be smaller than
i
1.13
LD301 – Operation and Maintenance Instruction Manual
1.14
Section 2
CAPACITORS HIGH AND LOW
d
AC∈
=
d
d
CHCL
CHCL
P
∆
=
+
−
=∆
2
and
A
∈
.
OPERATION
Functional Description - Sensor
The LD301 Series Intelligent Pressure Transmitters use capacitive sensors (capacitive cells) as
pressure sensing elements, as shown in Figure 2.1.
SENSOR DIAPHRAGM
POSITION, WHEN P1=P2
d
H
d
Where,
P1 and P2 are the pressures in chambers H and L.
CH = capacitance between the fixed plate on P1 side and the sensing diaphragm.
CL = capacitance between the fixed plate on the P2 side and the sensing diaphragm.
d = distance between CH and CL fixed plates.
∆d = sensing diaphragm's deflection due to the differential pressure ∆P = P1 - P2.
Knowing that the capacitance of a capacitor with flat, parallel plates may be ex pressed as a function of
plate area (A) and distance (d) between the plates as:
Where,
∈= dielectric constant of the medium between the capacitor's plates.
Should CH and CL be considered as capacitances of flat and parallel plates with identical areas, then:
CH
=
However, should the differential pressure (∆P) apply to the capacitive cell not deflect the sensing
diaphragm beyond d/4, it is possible to assume ∆P as proportional to ∆d, that is:
∆+
)2/(
dd
Figure 2.1 – Capacitive Cell
.
∈
CL
=
A
)2/(
∆−
dd
SENSOR DIAPHRAGM
L
P2P1
FIXED PLATES OF THE
∆P is proportional ∆d.
By developing the expression (CL - CH)/(CL + CH), it follo ws that:
As the distance (d) between the fixed plates CH and CL is constant, it is possible to conclude that the
expression (CL - CH)/(CL + C H) is proportional to ∆d and, therefor e, to the differential pressure to be
measured.
2.1
LD301 – Operation and Maintenance Instruction Manual
P
H
P
L
HART
4-20 mA
HT3012
SENSOR
DIGITAL READING
IN
SULATOR
IN/OUT
OUTPUT
CONDITIONER
HART MODEM
D/A
CONVERTER
MATH
COPROCESSOR
DISPLAY
CONTROLLER
PROCESSING UNIT
RANGES
SPECIAL FUNCTIONS
PID
OUTPUT CONTROL
SERIAL COMUNICATION
PROTOCOL HART
LOCAL ADJUSTMENTS
ZERO / SPAN
DIGITAL
DISPLAY
ELECTRONIC
CONVERTER
CONVERTER
TEMPERATURE
ELECTRONIC
CONVERTER
PRESSURE
SENSOR
MAIN BOARD
Thus it is possible to conclude that the capacitive cell is a pressure sensor formed by two capacitors
whose capacitances vary according to the applied differential pressure.
Functional Description - Hardware
Refer to the block diagram Figure 2.2. The function of each block is described below.
Oscillator
This oscillator generates a frequency as a function of sensor capacitance.
Signal Isolator
The Control signals from the CPU are transferred through optical couplers, and the signal from the
oscillator is transferred through a transformer.
Central Processing Unit (CPU) and PROM
The CPU is the intelligent portion of the transmitter, being responsible for the management and
operation of all other blocks, linearization and communication.
The program is stored in an external PROM. For temporary storage of data the CPU has an internal
RAM. The data in the RAM is lost, if the power is switched off, although the CPU also has an internal
nonvolatile EEPROM where data that must be retained is stored. Examples of such data are:
calibration, configuration and identification data.
EEPROM
Another EEPROM is located within the sensor assembly. It contains data pertaining to the sensor's
characteristics at different pressures and temp erat ures. Th is characterization is done for each sensor at
the factory.
D/A Converter
It converts the digital data from the CPU to an analog signal with 14-bits resolution.
Output
It controls the current in the line feeding the transmitters.
It acts as a variable resistive load whose value depends on the voltage from the D/A converter.
Modem
This system provides the data exchanged between the serve-master digital communications. The
transmitter demodulates information from the current line, and after treating it adequately, modulates
over the line the answer to be sent. A "1" is represented by 1200 Hz and "0" by 2200 Hz . Th e fr equen cy
signal is symmetrical and does not affect the DC-level of the 4-20 mA signal.
2.2
Figure 2.2 – LD301 Block Diagram Hardware
Power Supply
Power shall be supplied to the transmitter circuit using the signal line (2-w ire system). The transmitter
quiescent consumption is 3.6 mA; during operation, consumption may be as h igh as 21 mA, depen ding
on the measurement and sensor status.
The LD301 in the transmitter mode shows failure indication at 3.6 mA if configured for low signal failure;
at 21 mA, if configured for high signal failure; 3.8 mA in the case of low saturation; 20.5 mA in the case
of high saturation and measurements proportional to the applied p ressu re i n the ran ge be twee n 3.8 mA
and 20.5 mA. 4 mA corresponds to 0% of the working range and 20 mA to100 % of the working range.
Power Supply Isolation
The sensor power supply is isolated from the main circuit by this module.
Display Controller
It receives the data from the CPU and actives the LCD segments. It also activates the back plane and
the control signals for each segment.
Local Adjustment
Two switches on the main board are magnetically activated by inserting the magnetic tool.
Functional Description - Software
Refer to the block diagram Figure 2.3. The function of each block is described below.
Digital Filter
The digital filter is a low pass filter with an adjustable time constant. It is used to smooth noisy signals.
The Damping value is the time required for the output reaching 63.2% for a step input of 100%.
This value (in seconds) may be freely configured by the user.
Factory Characterization
The actual pressure from the capacitance and temperature readouts obtained from the sensor can
be calculated by using the factory characterization data stored in the sensor EEPROM.
User Linearization
The characterization TRIM points P1 - P5 can be used to complement the transmitter original
characterization.
Pressure Trim
The values obtained by Zero Pressure TRIM and Upper Pressure TRIM may correct here the
transmitter for long term drift or the shift in zero or upper pressure reading due to installation or over
pressure.
Ranging
It used to set the pressure values corresponding to the 4 and 20 mA output. In transmitter mod e the
LOWER-VALUE is the point corresponding to 4 mA, and the UPPER-VALUE is the point corresponding
to 20 mA. In PID mode the LOWER-VALUE corresponds to MV = 0% and the UPPER-VALUE
corresponds to MV = 100%, where, MV is the Manipulated Variable.
Function
Depending on the application, the transmitter output or controller PV may have the following
characteristics according to the applied pressure: Linear (for pressure, differential pressure and level
measurement); Square-root (for flow measurement with differential pressure pr oducers) and Square-rootof the Third and Fifth power (for flow measurements in open channels). The function is selected
with FUNCTION.
Points Table
This block relates the output (4-20 mA or Process Variable) to the input (a pplie d pre ssure) according to
a look-up table from 2 to 16 points. The output is calculated by the interpolation of these points. The
points are given in the function "TABLE POINTS" in percent of the range (X
output (Y
measurement it can be used to correct varying Reynolds numbers.
Setpoint
Is the desired value in the process variable when the controller is activated. The operator in the
\CONTR\INDIC option adjusts it.
). It may be used to linearize, e.g., a level measurement to volume or mass. In flow
i
Operation
) and in percent of the
i
2.3
LD301 – Operation and Maintenance Instruction Manual
PID
First, the error is calculated: PV-SP (DIRECT ACTION) or SP-PV (REVERSE ACTION), then the M V
(manipulated value) is calculated, according to the algorithm of the PID. The PID output signal may
follow a user-determined curve, in up to 16 configurable points. If the table is enabled, there will be a
display indication with the F(X) character
Auto/Manual
The Auto/Manual mode is configured in CONTR/INDIC. W ith the PID in Manual, the MV can be
adjusted by the user in the LOW LIMIT to HIGH LIMIT range in the CONTR/LIM-SEG option. The
POWER-ON option is used here to determine in which mode the controller should be upon powering it
on.
Limits
This block makes sure that the MV does not go beyond its minimum and maximum limits as
established by the HIGH-LIMIT and LOW-LIMIT. It also makes sure that the Rate-of-C hange does not
exceed the value set in OUT-CHG/S.
Output
It calculates the current proportional to the process variable or manipulated variable to be transmitted
on the 4-20 mA output depending on the configuration in OP-MODE. This block also contains the
constant current function configured in OUTPUT. T he output is physically limited to 3.6 to 21 mA. The
current output complies with NAMUR NE-43.
Current Trim
The 4 mA TRIM and 20 mA TRIM adjustment is used to make the transmitter current comply with a
current standard, should a deviation arise.
User Unit
It converts 0 and 100% of the process variable to the desired engineering unit readout available for
display and communication. It is used, e.g., to get a volume or flow indication from a level or d iffer enti al
pressure measurement, respectively. A unit for the variable can also be selected.
Totalization
Used for flow application to totalize the accumulated flow since the last reset, the last reset, getting the
volume or mass transferred. In the lack of power, the totalized value is saved and continues totalizing
after its re-establishment.
Display
The two indications configured in the DISPLAY alternates between the primary and secon dary v ariable
as configured by the user.
2.4
SENSOR
TP
DIGITALFILTER
Operation
DAMPING
SETPOINT
SP %
SP
SP TRACKING
FACTORY
CHARACTERIZATION
USER’S
LINEARIZATION
PRESSURE TRIM
CALIBRATION
FUNCTION
POINTS TABLE
TABLE
(BUMPLESS A/M)
PID
KP , TR, TD
ACTION
TEMPERATURE COMPENSATION
LINEARIZATION UP TO 5 POINTS
ZERO TRIM
LOWER TRIM
UPPER TRIM
PV * (PRESSURE)
LVR AND URV
LINEAR, QUADRATIC AND TABLE
PV %
USER’S UNIT
PV**
ON / OFF
0%
100%
UNID. ESPC.
TOTALIZER
TOT
TOTAL
MAX_FLOW
UNIT
RESET
ENABLE/DISABLE
ERROR %
PID BLOCK (OPTIONAL)
AUTO/MANUAL
LIMITS
PID - POINTS
TABLE
TABLE
MV %
A/M
MV
POWER-ON
SAFETY OUTPUT
LOWER
UPPER
BAUD RATE
FEEDBACK-MV
OP-MODE
OUTPUT
CURRENT
TRIM
4-20mA
TRM
OUTPUT
CONST
4 mA
20 mA
MV %
SAÍDA
INDICATOR 1
PV
PV%
TOT
DISPLAY
Figure 2.3 – LD301 – Software Block Diagram
NOTE:
* USER’S UNIT DISABLED
** USER’S UNIT ENABLED
SP
SP%
TEMP
ERROR%
PRIMARY
SECONDARY
INDICATOR 2
INDICATION
INDICATION
2.5
LD301 – Operation and Maintenance Instruction Manual
M
A
Fix
F(t)
PID
SP
F(x)
35
PV
min
35
INDICATES THAT TOT ALIZATION
IS DISPLAYED
INDICATES ACTIVE
TABLE FUNCTION
* PID IS OPTIONAL
INDICATES ACTIVE
MULTIDROP MODE
INDICATES ACTIVE FUNCTION
VARIABLE FIELD
UNIT PERCENT
UNIT MINUTES
UNIT AND FUNCTION FIELD
UNIT AND FUNCTION FIELD
VARIABLE IS NOW DISPLAYED
xxx
INDICATES TRANSMITTER
IN PID MODE*
INDICATES ACTIVE
CONSTANT OUTPUT MODE
INDICATES CONTROLLER
IN AUTOMA TIC*
INDICATES CONTROLLER
IN MANUAL*
INDICATES POSSIBILITY
TO ADJUST / CHANGE
VARIABLE / MODE
INDICATES THAT
THE SETPOINT
IS NOW DISPLAYED
The Display
The local indicator is able to display one or two variables, which are user-selected. When two variables
are chosen, the display will alternate between both with an interval of 3 seconds.
The liquid crystal display includes a field with 4 ½ numeric digits, a field with 5 alphanumeric digits and
an information field, as shown on Figure 2.4.
When the totalization is displayed, the most significant part appears in the unit and function field
(upper) and the least significant part in the variable field (lower). See Total Value in Section 3.
The display controller, from release V6.00 on is integral part to the main board. Please observe the
new spare part codes.
Monitoring
During normal operation, the LD301 is in the monitoring mode. In this mode, indic ation alternates
between the primary and the secondary variable as configured by the user. See Figure. 2.5. The
display indicates engineering units, values and parameters simultaneously wit h mos t sta tus indica tors .
The monitoring mode is interrupted when the user does complete local adjustment.
The LCD may also display errors and other messages (See table 2.1).
DISPLAY V6.00
2.6
Figure 2.4 – Display
Operation
Numeric
Alphanumeric
CH / CL alternating
disconnected).
Figure 2.5 – Typical Monitoring Mode Display Showing PV, in this case 25.00 mmH20
INDICATOR
DESCRIPTION
Version LD301 The LD301 is initialized after feeding.
CHAR
Variable Value SAT / Unit
with current.
SFAIL / Unit Failure on one sensor side or on both.
FAIL Init
The LD301 is on characterization mode (see Section 3 – TRIM).
Output current saturated on 3.8 or 20.5 mA. (see section 5 –
Maintenance).
Transmitter failed on initialization (sensor memory failure or
Table 2.1 – Messages Displayed
2.7
LD301 – Operation and Maintenance Instruction Manual
2.8
Section 3
CONFIGURATION
The LD301 Intelligent Pressure Transmitter is a digital instrument with the most up-to-date features a
measurement device can possibly have. Its digital communication protocol (HART
instrument to be connected to a computer in order to be configured in a very simple and complete way.
Such computers connected to the transmitters are called HOST computers. They can either be primary
or Secondary Masters. Therefore, even the HART
being a master-slave type of protocol, it is possible
to work with up to two masters in a bus. The Primary HOST plays the supervisory role and the
Secondary HOST plays the Configuration tool role.
The transmitters may be connected in a point-to-point or multidrop type network. In a point-to-point
connection, the equipment must be in its "0" address so that the output current may be modulated in 4 to
20 mA, as per the measurement. In a multidrop network, if the devices are recognized by their
addresses, the transmitters shall be configured with a network address between "1" and "15. In this
case, the transmitter output current is kept constant, with a consumption of 4 mA each. If the
acknowledgement mechanism is via Tag, the transmitter addresses may be "0" while their output current
is still being controlled, even in a multidrop configuration.
In the case of the LD301, which can be configured both as Transmitter and as a Controller; the HART
addressing is used as follows:
TRANSMITTER MODE - The "0" address causes the LD301 to control its output current and addresses
"1" through "15" place the LD301 in the multidrop mode with current control.
CONTROLLER MODE - The LD301 always controls the output current, in accordance with the value
calculated for the Controlled Variable, regardless of its network address.
NOTE
In the case of multidrop network configuration for classified areas, the entity parameters allowed for the
area shall be strictly observed. Therefore, the following shall be checked:
Ca Cij + Cc La Lij + Lc
) enables the
Voc
min [Vmaxj] Isc min [Imaxj]
Where:
Ca, La - Barrier Allowable Capacitance and Inductance;
Cij, Lij - Non protected internal Capacitance/Inductance of transmitter j (j = up to 15);
Cc, Lc - Cable capacitance and Inductance;
- Barrier open circuit voltage;
V
oc
I
- Barrier short circuit current;
sc
- Maximum allowable voltage to be applied to the instrument j;
Vmax
j
Imaxj - Maximum allowable current to be applied to the instrument j
The LD301 Intelligent Pressure Transmitter includes a very encompassing set of HART
functions that make it possible to access the functionality of what has been implemented. Such
commands comply with the HART
protocol specifications, and are grouped as Overall Commands,
Command
Common Practice Controls Commands and Specific Commands. A detailed description of such
commands may be found in the manual entitled HART Command Specification - LD301 Intelligent
Pressure Transmitter.
Smar developed the CONF401 and HPC301 software (See figure 3.2), the first one works in Windows
platform (95, 98, 2000, XP and NT) and UNIX. The second one, HPC301, works in the most recent
technology in PDA. (See figure 3.1). They provide easy configuration and monitoring of field devices,
capability to analyze data and to modify the action of these devices. The operation characteristics and
use of each one of the configuration tool are stated on their respective manuals.
Figures 3.1 and 3.2 show the front of the Palm and the CONF401 screen with the active configuration.
3.1
LD301 - Operation and Maintenance, Instruction Manual
Figure 3.1 – Smar Hand Held Terminal
Figures 3.3 and 3.4 show the menu tree used for configuration based on version 4.02 DD and
configuration with Smar Hand Held Tool, respectively.
3.2
Figure 3.2 – Smar Configuration Tool
ONLINE SINGLE UNIT
ONLINE MULTIDROP
Tag
Descriptor
Date (MM/DD/YY)
Message
Flange Type
Flange Material
O_Ring Material
Integral Meter
Drain/Vent Mtrl
INFO
CONF
MONIT
CNTRL
TRIM
MAINT
TOTAL
SELECT_ADDRESS
ONLINE MULTIDROP
Figure 3.3 –Menu Tree used for Configuration based o n Version 4.02 DD
Remote Seal Type
Remote Seal Fluid
Remote Seal Diaphr
Remote Seal Quant
Sensor Fluid
Sensor Iso Diaphr
Sensor Type
Flange Type
Probe Mat.
O-ring Mat.
Inst. Type
Probe Type
Probe Fluid
Dphrgm Mat.
Elect. Connec.
Range
3.4
Configuration Features
By means of the HART configuration tool, the LD301 firmware allows the following configuration
features to be accessed:
Transmitter Identification and Manufacturing Data;
Primary Variable Trim – Pressure;
Primary Variable Trim – Current;
Transmitter Adjustment to the Working Range;
Engineering Unit Selection;
Transference Function for Flow rates Measurement;
Linearization Table;
Totalizer Configuration;
PID Controller Configuration and MV% Characterization Table;
Device Configuration;
Equipment Maintenance.
The operations, which take place between the configuration tool and the transmitter do not interrupt the
Pressure measurement, and do not disturb the output signal. The configuration tool can be connected
on the same pair of wires as the 4-20 mA signals, up to 2 km away from the transmitter.
Manufacturing Data and Identification
The following information about the LD301 manufacturing and identification data is available:
TAG – 8 character alphanumeric field for transmitter identification
DESCRIPTOR
- 16-character alphanumeric field for additional transmitter identification. May be used to
identify service or location.
DATE - The date may be used to identify a relevant date as the last calibration, the next calibration or
the installation. The date is presented in the form of bytes where DD = [1,..31], MM = [1..12], AA =
[0..255], where the effective year is calculated by [Year = 1900 + AA].
MESSAGE - 32-character alphanumeric field for any other information, such as the name of the person
who made the last calibration, some special care to be taken, or if a ladder is needed for accessing.
FLANGE TYPE - Conventional, Coplanar, Remote Seal,
Level 3 in # 150, Level 4 in # 150, Level 3 in # 300, Level 4 in # 300, Level DN80 PN25/40, Level DN100
PN10/16, Level DN100 PN25/40, Level 2 in # 150, Level 2 in # 300, Level DN50 PN10/16, Level DN50
PN25/40, Level DN80 PN10/16, None, Unknown and Special.
FLANGE MATERIAL - Carbon Steel, 316 SST, Hastelloy C, Monel, Unknown, Undefined, Tantalum,
None and Special.
O-RING MATERIAL - PTFE, Viton, Buna-N, Ethyl-prop, None, Unknown, Undefined and Special.
INTEGRAL METER - Installed, None and Unknown.
DRAIN/VENT MATERIAL - 316 SST, Hastelloy C, Monel, None, Unknown, Undefined and Special.
REMOTE SEAL TYPE - Chemical Tee, Flanged Extended, Pancake, Flanged, Threaded, Sanitary,
Sanitary Tank Spud, None, Union Connection, Unknown, Undefined and Special.
REMOTE SEAL FLUID - Silicone, Syltherm 800, Inert, Glycerin/H20, Prop gly/H20, Neobee-M20,
Fluorolube, Undefined, None, Unknown and Special.
REMOTE SEAL DIAPHRAGM - 316L SST, Hastelloy C, Tantalum, None, Unknown, Undefined and
Special.
REMOTE SEAL QUANTITY - One, Two, None, Unknown and Undefined.
SENSOR FLUID* - Silicone, Inert, Special, Unknown and None.
SENSOR ISOLATING DIAPHRAGM* - 316 SST, Hastelloy C, Monel, Tantalum and Special
SENSOR TYPE* - It shows the sensor type.
SENSOR RANGE* - It shows the sensor range in user-chosen engineering units. See Configuration Unit.
Items marked with asterisk cannot be changed. They come directly from the sensor memory.
Configuration
NOTE
3.5
LD301 - Operation and Maintenance, Instruction Manual
Primary Variable Trim - Pressure
Pressure, defined as a Primary Variable, is determined from the sensor readout by means of a
conversion method. Such a method uses parameters obtained during the fabrication process. They
depend on the electric and mechanical characteristics of the sensor, and on the temperature change to
which the sensor is submitted. These parameters are recorded in the sensor's EEPROM memory. When
the sensor is connected to the transmitter, such information is made available to the transmitter
microprocessor, which sets a relationship between the sensor signal and the measured pressure.
Sometimes, the pressure shown on the transmitter display is different from the applied pressure. This
may be due to several reasons, among which the following:
The transmitter mounting position;
The user pressure standard differs from the factory standard;
Sensor original characteristics shifted by overpressure, over temperature or by long-term drift.
Some users prefer to use this feature for zero elevation or suppression when the measurement refers
to a certain point of the tank or tap (wet leg). Such practice, however, is not recommended when
frequent laboratory calibrations are required, because the equipment adjustment refers to a relative
measurement, and not to an absolute one, as per a specific pressure standard.
The Pressure Trim, as described on this document, is the method used in order to adjust the
measurement both in relation to the applied pressure and the user's pressure standard. The most
common discrepancy found in transmitters is usually due to Zero displacement. This may be corrected
by means of the zero trim or the lower trim.
There are four types of pressure trim available:
LOWER TRIM: Is used to trim the reading at the lower range. The user informs the transmitter the
correct reading for the applied pressure via HART
Check on section 1, the note on the influence of the mounting position on the indicator.
For better accuracy, the trim adjustment should be made in the lower and upper values of the
operation range values.
UPPER TRIM: Is used to trim the reading at the upper range. The user informs the transmitter the
correct reading for the applied pressure via HART
The upper pressure trim shall always be applied after the zero trim.
NOTE
NOTE
WARNING
configuration tool.
configuration tool.
ZERO TRIM: is similar to the LOWER TRIM, but is assumed that the applied pressure is zero. The
reading equal to zero must be active when the pressures of differential transmitter cameras are
equalized or when a gage transmitter opens to atmosphere or when the absolute transmitter is
applied to the vacuum. Therefore, the user does not need to enter with any value.
The pressure taps on the transmitter must be equalized when zero trim is applied.
CHARACTERIZATION: this is used to correct any possible intrinsic non-linearity to the conversion
process. Characterization is done by means of a linearization table, with up to five points. The user
shall apply pressure and use the HART
each point of the table. In most cases, characterization is not required, due to the efficiency of the
production process. The transmitter will display "CHAR", thus indicating that the characterization
process has been activated. The LD301 is fitted with an internal feature to enable or disable the use
of the Characterization Table.
The characterization trim changes the transmitter characteristics. Read the instructions carefully
and make sure that you are working with a pressure standard with 0.03% accuracy or better,
otherwise the transmitter accuracy will be seriously affected.
3.6
NOTE
configuration tools to inform the pressure value applied to
WARNING
Primary Variable Current Trim
When the microprocessor generates a 0% signal, the Digital to Analog converter and associated
electronics are supposed to deliver a 4 mA output. If the signal is 100%, the output should be 20 mA.
There might be differences between the Smar current standards and your current plant Standard. In this
case, the Current Trim adjustment shall be done with a precision ammeter as measurement reference.
Two Current Trim types are available:
4 mA TRIM: this is used to adjust the output current value corresponding to 0% of the
measurement;
20 mA TRIM: this is used to adjust the output current value corresponding to 100% of the
measurement;
The Current Trim shall be carried out as per the following procedure:
Connect the transmitter to the precision ammeter;
Select one of the Trim types;
Wait a while for the current to stabilize and inform the transmitter the current readout of the
precision ammeter.
The transmitter presents a resolution that makes it possible to control currents as low as
microamperes. Therefore, when informing the current readout to the transmitter, it is recommended
that data input consider values up to tenths of microamperes.
Transmitter Adjustment to the Working Range
This function directly affects the transmitter 4-20 mA output. It is used to define the transmitter working
range; in this document it is referred to as the transmitter calibration. The LD301 transmitter includes
two calibration features:
CALIBRATION WITH REFERENCE: this is used to adjust the transmitter working range, using a
pressure standard as reference;
CALIBRATION WITHOUT REFERENCE:this is usedto adjust the transmitter working range,
simply by having user-informed limit values.
Both calibration methods define the Working Range Upper and Lower values, in reference to some
applied pressure or simply informed by entered values. CALIBRATION WITH REFERENCE differs from
the Pressure Trim, since CALIBRATION WITH REFERENCE establishes a relationship between the
applied pressure and the 4 to 20 mA signal, and the Pressure Trim is used to correct the measurement.
In the transmitter mode, the Lower Value always corresponds to 4 mA and the Upper Value to 20 mA. In
the controller mode, the Lower Value corresponds to PV=0% and the Upper Value to PV=100%.
The calibration process calculates the LOWER and the UPPER values in a completely independent way.
The adjustment of values does not affect one another. The following rules shall, however, be observed:
T he Lower and Upper values shall be within the range limited by the Minimum and Maximum
Ranges supported by the transmitter. As a tolerance, values exceeding such limits by up to 24% are
accepted, although with some accuracy degradation;
The Working Range Span, determined by the difference between the Upper and Lower Values, shal l
be greater than the minimum span, defined by [Transmitter Range / (120) for models: D, M, H, A4,
A5, and Transmitter Range / (2,5), (25), or (50) for A1, A2, and A3, respectively]. Values up to 0.75
of the minimum span are acceptable with slight accuracy degradation.
Should the transmitter operate with a very small span, it will be extremely sensitive to pressure
variations. Keep in mind that the gain will be very high and that any pressure change, no matter
how small, will be amplified.
If it is necessary to perform a reverse calibration, that is, to work w ith an UPPER VALUE smaller than
the LOWER VALUE, proceed as follows:
Configuration
NOTE
NOTE
3.7
LD301 - Operation and Maintenance, Instruction Manual
Place the Lower Limit in a value as far as possible from the present Upper Value and from the new
adjusted Upper value, observing the minimum span allowed. Adjust the Upper Value at the desired point
and, then, adjust the Lower Value.
This type of calibration is intended to prevent the calibration from reaching, at any moment, values not
compatible with the range. For example: lower value equals to upper value or separated by a value
smaller than the minimum span.
This calibration procedure is also recommended for zero suppression or eleva tion in tho se cases w here
the instrument installation results in a residual measurement in relation to a certain reference. This is the
specific case of the wetted tap.
In most applications with wetted taps, indication is usually expressed as a percentage. Should readout
in engineering units with zero suppression be required, it is recommended to use the User Unit
feature for such conversion.
Engineering Unit Selection
Transmitter LD301 includes a selection of engineering units to be used in measurement indication.
For pressure measurements, the LD301 includes an option list with the most common units. The internal
reference unit is inH2O @ 20 ºC; should the desired unit be other than this one, it will be automatically
converted using conversion factors included in Table 3.1.
As the LD301 uses a 4 ½ digit display, the largest indication will be 19999. Therefore, when selecting a
unit, make sure that it will not require readouts greater than this limit. For User reference, Table 3.1
3.8
presents a list of recommended sensor ranges for each available unit.
CONVERSION FACTOR NEW UNITS RECOMMEND RANGE
1,00000 inH2O @20 oC 1, 2, 3 and 4
0,0734241 inHg @ 0 oC all
0,0833333 ftH2O @ 20 oC all
25,4000 mmH2O @ 20 oC 1 and 2
1,86497 mmHg @ 0 oC 1, 2, 3 and 4
0,0360625 psi 2, 3, 4, 5 and 6
0,00248642 bar 3, 4, 5 and 6
2,48642 mbar 1, 2, 3 and 4
2,53545 gf/cm2 1, 2, 3 and 4
0,00253545 kg/cm2 3, 4, 5 and 6
248,642 Pa 1
0,248642 kPa 1, 2, 3 and 4
1,86947 Torr @ 0 oC 1, 2, 3 and 4
0,00245391 atm 3, 4, 5 and 6
0,000248642 MPa 4, 5 and 6
0,998205 inH2O @ 4 oC 1, 2, 3 and 4
25,3545 mmH2O @ 4oC 1 and 2
0,0254 mH2O @ 20 oC 1, 2, 3 and 4
0,0253545 mH2O @ 4 oC 1, 2, 3 and 4
In applications where the LD301 will be used to measure variables other than pressure or in the cases
where a relative adjustment has been selected, the new unit may be displayed by means of the User
Unit feature. This is the case of measurements such as level, volume, and flow rate or mass flow
obtained indirectly from pressure measurements.
The User Unit is calculated adopting the working range limits as a reference, which is, defining a value
corresponding to 0% and another corresponding to 100% of the measurement:
0% - Desired readout when the pressure is equal to the Lower Value (PV% = 0%, or transmitter
mode output equal to 4 mA);
100% - Desired readout when the pressure is equal to the Upper Value (PV% = 100%, or transmitter
mode output equal to 20 mA).
NOTE
Table 3.1 – Available Pressure Units
The user unit may be selected from a list of options included in the LD301. Table 3.2 makes it possible
3
to associate the new measurement to the new unit so that all supervisory systems fitted the HART
protocol can access the special unit included in this table. The user will be responsible for the
consistency of such information. The LD301 does not verify if the values corresponding to the 0% and
100% inserted by the user are compatible with the selected unit.
VARIABLEUNITS
inH
O, inHg, ftH2O, mmH2O, mmHg, psi, bar, mbar, gf/cm2, kgf/cm2, Pascal,
Pressure
Volumetric Flow
Velocity
Volume
Level
Mass
Mass Flow
Density
Others
special
ft/s, m/s, m/h.
gal, litro, Gal, m
ft, m, in, cm, mm.
grama, kg, Ton, lb, Sh ton, Lton.
g/s, g/min, g/h, kg/s, kg/m, kg/h, kg/d, Ton/m, Ton/h, Ton/d, lb/s, lb/m, lb/h, lb/d
3
SGU, g/m
, kg/m3, g/ml, kg/l, Twad, Brix, Baum L, API, % Solw, % Solv, Ball.
CSo, cPo, mA, %.
5 caracteres. (See HART® Special Units in section 5).
Table 3.2 – Available User Units
Should a special unit other than those presented on Table 3.2 be required, the LD301 allows the user to
create a new unit by entering up to 5 alphanumeric digits. The LD301 includes an internal feature to
enable and disable the User Unit.
Example: transmitter LD301 is connected to a horizontal cylindrical tank (6 meters long and 2 meters in
diameter), linearized for volume measurement using camber table data in its linearization table.
Measurement is done at the high-pressure tap and the transmitter is located 250 mm below the support
base. The fluid to be measured is water at 20 C. Tank volume is: [(.d2)/4].l = [(.22)/4].6 = 18.85 m3.
The wet tap shall be subtracted from the measured pressure in order to obtain the tank level. Therefore,
a calibration without reference shall be carried out, as follows:
In Calibration:
Lower = 250 mmH
Upper = 2250 mmH
Pressure unit = mmH
O
2
O
2
O
2
In User Unit:
User Unit 0% = 0
User Unit 100% = 18.85 m³
User Unit = m
3
When activating the User's Unit, LD301 it will start to indicate the new measurement.
Transfer Function for Flow Measurement
The function can be used to linearize the measured pressure to flow or volume. The following functions
are available:
Use the lowest required damping to prevent measurement delays;
If the square root extraction for flow measurement is carried out externally by other loop element, do
not enable this function on the transmitter
SQRT- Square Root. Considering the pressure input X varying between 0 and 100%, the output will
be
The Square Root has an adjustable cutoff point. Below this point the output is linear, if the cutoff mode is
bumpless with the differential pressure as indicated by the Figure 3.5. If the cutoff mode is hard the
output will be 0% below the cutoff point. The default value for Cutoff is 6% of ranged pressure input. The
maximum value for cutoff is 100%. Cutoff is used to limit the high gain, which results from square root
extraction on small values. This gives a more stable reading at low flows.
x10. This function is used in flow measurement with, e.g., orifice or Venturi tube etc.
O @ 4 oC, mmH2O @ 4 oC, mH2O, mH2O @ 4 oC.
2
3
, bbl, bush, Yd3, Pé3, In3, hl.
NOTE
Configuration
3.9
LD301 - Operation and Maintenance, Instruction Manual
D
In order to find the square root, the LD301 configurable parameters are: cutoff point defined at a certain
pressure expressed as % and the cutoff mode, hard or bumpless.
OUTPUT
100%
Y = 10 x
BUMPLESS
HARD
CUTOFF
Figure 3.5 – Square Root curve with Cutoff point
POINT
100%
CALIBRATE
SPAN
NOTE
In bumpless cutoff mode the gain below the cutoff point is given by the equation:
G10
cutoff
For example, at 1% the gain is 10, i.e., a 0.1% error in differential pressure, gives a 1% error in Flow
reading. The lower the cutoff, the higher is the gain.
The measurement of the bidirectional flow is useful when it is needed to measure the flow in the pipe in
both directions. For example, in tank maneuvering there are several pipes where the direction of the fluid
may vary. In this case, LD301 has the bidirectional flow measurement function. This function treats the
flow, no matter what its direction is, as if it w e re positive. Thus, it is possible to extract the square root
and measure the bidirectional flow.
SQRT**3
The output will be
flumes.
SQRT**5
open channel Flow measurement with V-notch weirs.
It is possible to combine the previous functions with a table. The flow can be corrected according to the
table to compensate, for example, the variation of Reynolds number at the flow measurement.
TABLE - The output is a curve formed by 16 points. These points may be edited directly on the XY
Table of the LD301. For example, it may be used as a camber table for tanks in applications where
the tank volume is not linear in relation to the measured pressure;
SQRT**3 & TABLE
SQRT**5 & TABLE - Square Root of the Fifth Power AND TABLE.
TABLE & SQRT – This function provides bidirectional flow measurement (piping flow measurement
in both ways). This function is available for version 6.05 or above firmware.
Example:
There is a flow on the positive direction (high pressure on the H side) with a 0 to 400 mbar DP and a flow
on the negative direction (high pressure on the L side) from 0 to 100 mbar. For these data make the
range lower value equal to -100 mbar, complete the table below, and always including the 0 per cent
pressure value, namely 20 per cent. Insert the data on the transmitter.
- Square Root of the Third Power;
3
1.0x . This function is used in open channel Flow measurement with weirs or
- Square Root of the Fifth Power. The output will be
- Square root and Table. Same application as square roots, but also allows
- Square Root of the Third Power AND TABLE;
001.0x . This function is used in
5
3.10
To configure a symmetrical bidirectional flow double the number of calibration points to get a better
performance.
Next, configure the cutting point. Refer to the previous Root item.
Table Points
If the option TABLE is selected, the output will follow a curve given in the option TABLE POINTS. If the
user wants to have your 4-20 mA proportional to the fluid volume or mass inside a tank, he must
transform the pressure measurement "X" into volume (or mass) "Y" using the tank strapping table, as
the example shown in Table 3.3.
POINTS
1
2
3
4
5
6
7
8
.
.
15
16
As shown on the previous example, the points may be freely distributed for any desired value of X. In
order to achieve a better linearization, the distribution should be concentrated in the less linear parts of
the measurement.
The LD301 includes an internal feature to enable and disable the Linearization Table.
Totalization Configuration
When the LD301 works in flow applications it is often desirable to totalize the flow in order to know the
accumulated volume or mass that has flown through the pipe/channel.
The totalizer integrates the PV% along time, working with a time scheduling based on seconds, as per
the following formula:
The method uses such totalization and, through three parameters (MAXIMUM FLOWRATE, TOTAL
INCREMENT and TOTAL UNIT), converts it to the user-defined totalizing unit:
MAXIMUM FLOW RATE - this is the maximum flow rate expressed in volume or mass units per
second, corresponding to the measurement (PV%=100%). For example: m3/s, bbl/s, kg/s, lb/s;
X Y
0 % (-100 mbar)100 %
20 % (0 mbar) 0 %
100 % (400 mbar) 100 %
NOTE
LEVEL
(PRESSURE)
- -10 % - -0.62 %
250 mmH
450 mmH
750 mmH
957.2 mmH
1050 mmH
1150 mmH
1250 mmH
2250 mmH
TOT%
O 0 % 0 m3 0 %
2
O 10 % 0.98 m3 5.22 %
2
O 25 % 2.90 m3 15.38 %
2
O 35.36 % 4.71 m3 25 %
2
O 40 % 7.04 m3 37.36 %
2
O 45 % 8.23 m3 43.65 %
2
O 50 % 9.42 m3 50 %
2
.
.
O
2
- 110 % - 106 %
Table 3.3 - Tank Strapping Table
X VOLUME Y
.
.
100 % 18.85 m
FLOWRATEMAXIMUM
INCREMENTONTOTALIZATI
Configuration
.
.
3
100 %
dtPV
.
.
3.11
LD301 - Operation and Maintenance, Instruction Manual
TOTALIZATION INCREMENT - this is used to convert the flow rate base unit into a multiple unit of
mass or volume. For example, a flow rate totalized in gallons/s may be converted to a volume in m3;
a mass flow rate of g/s may be converted to kilos, etc.
TOTALIZATION UNIT - this is the engineering unit. It shall be associated to the totalized value. It
may be a standard unit or a special unit with up to five characters.
The totalizer shall be disabled so that any of these parameters can be configured.
The largest totalized value is 99.999.999 totalizing units. When the totalization is displayed, the most
significant part is shown on the numeric field, and the less significant part is shown on the alphanumeric
field. Figure 3.6 shows a typical display indication.
F(t) indication is activated every time the totalized value is shown on the digital display.
WARNING
NOTE
F ( t )
+ SIGNIFICANT
- SIGNIFICANT
Figure 3.6 – Typical Monitoring Mode Display Showing the Total, in this case 19.6708.23
The following services are associated with the Totalizer:
INITIALIZATION - Totalization is reinitialized from value "0";
ENABLING / DISABLING - this allows the totalization function to be enabled or disabled.
From Version V6.00 on, with the use of the new main board, the totalized value is persistent, i.e.,
there is no longer the risk of losing this information in case of power failure.
Example: A differential pressure of 0 - 20 inH2O represents a flow of 0 - 6800 dm3/minute.
In CONF set Lower = 0 inH2O and Upper = 20 inH2O.
In order to adjust the MAX._FLOW, the maximum flow must be converted to cubic decimeters per
second: 6800 / 60 = 113.3 dm3 /s.
The selection of the totalization unit (U_TOTAL) is made in function of the maximum flow and the
minimum time allowable for the counter overrun, i.e., the time required for the totalization to reach
99.999.999.
In the example, if U_TOTAL = 1, the totalization increment is 1 dm3. The time required for the overrun
with maximum flow is 245 hours, 10 minutes and 12.5 seconds.
On the other hand, in case a TOTALIZATION INCREMENT equal to 10 is used, the totalized unit will be
deciliter (dal) and the totalizer will receive one increment at every 10 dm
flow rate (113.3 dm
hours, 42 minutes and 5.243 seconds.
PID Controller Configuration
The LD301 may be factory -configured to work as Transmitter only or as Transmitter / Controller. In case
the LD301 is configured as a Transmitter / Controller, the end user may change its operation mode at
any time simply by configuring an internal status variable.
As a PID Controller, the LD301 may run a PID type control algorithm, where its 4 to 20 mA will represent
the status of the Manipulated variable (MV). In such a mode, output is 4 mA when the MV = 0% and 20
mA when MV= 100%.
WARNING
3
3
/s), the totalizer will reach its maximum value and return to zero in 102 days, 3
. Considering the maximum
3.12
Configuration
The PID implementation algorithm is:
)dPV/dt Td dt e1/Tr (e Kp MV
Where:
e(t) = PV-SP (direct) SP-PV (reverse)
SP = Setpoint
PV = Process Variable (Pressure, Level, Flow, etc.)
Kp = Proportional Gain
Tr = Integration Time
Td = Derivative Time
MV = Manipulated Variable (output)
The three configuration groups below are pertinent to the PID controller:
SAFETY LIMITS - this group enables the configuration of: Safety Output, Output Rate and Output
Lower and Upper Limits.
The Safety Output defines the value of the output in the case of equipment failure.
Output Rate is the maximum variation Rate allowed for the output, expressed in %/s.
The Lower and Upper Limits define the output range.
TUNING - this group enables the PID tuning to be performed. The following parameters may be
adjusted: Kp, Tr and Td.
Parameter Kp is the proportional gain (not the proportional band) that controls the PID proportional
action. It may be adjusted from 0 to 100.
Parameter Tr is the integral time that controls the PID integral action. It may be adjusted from 0 to
999 minutes per repetition.
Parameter Td is the derivative time controlling the PID derivative action. It may be adjusted from 0
to 999 seconds.
All these parameters accept zero as input. Such value simply nullifies the corresponding PID control
actions.
OPERATION MODES - this group enables the configuration of: Control Action, Setpoint Tracking
and Power On.
The Control Action Mode enables the selection of the desired output action: direct or reverse. In
direct action, a PV increase causes an output increase; in reverse action, a PV increase causes an
output decrease.
When the Setpoint Tracking mode is enabled, it is possible for the Setpoint to follow the PV while in
Manual Control. Thus, when control passes to Auto, the Setpoint value will be that of the last PV
prior to the switching.
When the PID is enabled, the Power On mode allows the adjustment of the mode in which the PID
controls shall return after a power failure: Manual mode, Automatic mode or the last mode prior to
the power failure.
TABLE – If the table option is selected, the MV output will follow a curve according to the values
typed in the LD301’s characterization table. The points can freely be configured as percentage
values. For a better linearization, it is recommendable that the points are the closest possible , in the
less linear regions of the curve. The LD301 has an internal variable to enable and disable the
characterization table of the MV output of the PID.
Equipment Configuration
The LD301 enables the configuration not only of its operational services, but of the instrument itself.
This group includes services related to: Input Filter, Burnout, Addressing, Display Indication, Writing
Protection and Passwords.
INPUT FILTER - The Input Filter, also referenced to as damping, is a first class digital filter
implemented by the firmware. User configurable from any value higher than zero seconds in addition
to intrinsic sensor response time (0.2 s) (via digital communication). The transmitter mechanical
damping is 0.2 seconds.
NOTE
3.13
LD301 - Operation and Maintenance, Instruction Manual
BURN OUT - The output current may be programmed to go to the maximum limit of 21 mA (Full
Scale) or to the minimum limit of 3.6 mA in case of transmitter failure. Configuring the BURNOUT
parameter for Upper or Lower may do this.
The BURNOUT configuration is only valid in the transmitter mode. When a failure occurs in the PID
mode, the output is driven to a safety Output value, between 3.8 and 20.5 mA.
ADDRESSING - The LD301 includes a variable to define the equipment address in a HART
network. Addresses may go from value "0" to "15"; addresses from "1" to "15" are specific
addresses for multidrop connections. This means that, in a multidrop configuration, the LD301 will
display the message MDROP for addresses "1" to "15".
The output current will be increased to 4 mA as the LD301 address, in the Transmitter mode, is
altered to another value than "0" (this does not happen when the LD301 is configured in the Controller
mode).
The LD301 is factory-configured with address "0".
DISPLAY INDICATION - the LD301 digital display is comprised of three distinct fields: an
information field with icons indicating the active configuration status, a 4 ½ digit numeric field for
value indication and a 5 digit alphanumeric field for units and status information.
The LD301 may work with up to two display configurations to be alternately displayed at 3 second
intervals. Parameters that may be selected for visualization are those listed on Table 3.4, below.
PARAMETER DESCRIPTION
CURRENT
PV%
PV
(*)
MV%
PR
TEMP
TOTAL
(*)
SP%
(*)
SP
(*)
ER%
NONE
Current in mille amperes.
Process Variable in percentage.
Process Variable in engineering units.
Output in percentage.
Pressure in pressure unit.
Ambient temperature.
Total accumulated by the totalizer.
Setpoint in percentage.
Setpoint in engineering units.
Error in percentage (PV% - SP %).
Used to cancel the second indication.
Items marked with an asterisk can only be selected in the PID mode.
Total can only be selected if enabled.
WRITING PROTECTION - This feature is used to protect the transmitter configuration from changes
via communication. All configuration data are writing-protected.
The LD301 includes two write protection mechanisms: software and hardware locking; software
locking has higher priority.
When the LD301 writing software protection mechanism is enabled, it is possible, by means of
specific commands, to enable or disable the write protection.
PASSWORDS - this service enables the user to modify the operation passwords used in the LD301.
Each password defines the access for a priority level (1 to 3); such configuration is stored in the
LD301 EEPROM. Password Level 3 is hierarchically superior to password level 2, which is superior
to level 1. The levels 1 and 2 are available for external access allowing configurator to create its
proper access structure.
NOTE
Table 3.4 – Variables for Display Indication
NOTE
3.14
Equipment Maintenance
Here are grouped maintenance services related with the collection of information required for equipment
maintenance. The following services are available: Order Code, Serial Number, Operation Counter and
Backup/Restore.
ORDER CODE - The Order Code is the one used for purchasing the equipment, in accordance with
the User specification. There are 26 characters available in the LD301 to define this code.
LD301 D2 1 0 H 1I B U 0 0 P 0 10 I 1 A 0 1 0 / BU Y2 Y5 P2 F1
# OPTION DESCRIPTION
1 LD301
2 D2
3 1
4 0
5 H
6 1
7 I
8 B
9 U
10 0
11 0
12 P
13 0
14 2
15 0
16 I
17 1
18 A
19 0
20 1
21 0
22 BU
23 Y2
24 Y5
25 P2
26 F1
SERIAL NUMBER - Three serial numbers are stored:
Circuit Number - This number is unique to each main circuit board and cannot be changed.
Sensor Number - The serial number of the sensor connected to the LD301 and cannot be
Transmitter Number - the number that is written at the identification plate in each transmitter.
The transmitter number must be changed whenever there is the main plate change to avoid
communication problems.
OP_COUNT - Every time a change is made, there is an increment in the respective change counter
for each monitored function, according to the table 3.6. The counter is cyclic, from 0 to 255. The
monitored items are:
Configuration
Differential, Flow, and Level Transmitter.
Differential, Range: -50 a 50 kPa.
Stainless Steel 316L Diaphragm and Fill Fluid with Silicone Oil.
Class of Standard performance.
HART® Transmitter 4-20 mA.
SIS: Safety Integrity System.
Flanges, Adapters, and 316 Stainless steal Drain/Vent valves.
Buna N O-Rings.
Drain in up position.
Process Connection: 1/4 - 18 NPT (Without Adapter).
Without Special Cleaning.
Flanges, nuts, and bolts Material: Plated Carbon Steel.
Flange Threaded for accessories fixing (adapters, manifolds, etc): 7/16” UNF.
With Digital Indicator.
Electrical connection 1/2 NPT.
316 Blank conduit Plug.
316 Stainless Steel Blank conduit Plug. Mounting Blacket for 2” Pipe or surface
mounting: Blacket and Accessories in Carbon Steel.
Electronic Housing: Aluminum.
Painting: N6, 5 Munsell Gray Polyester.
Identification plate: FM: XP. IS, NI, DI, IP.
TAG plate: with tag, when specified.
Burn-out: full Scale.
LCD1 Indication: Pressure (Engineering Units).
LCD2 Indication: Temperature (Engineering Units).
Available and enable PID.
Transfer Function for flow measure: Square Root.
changed. This number is read from the sensor every time a new sensor is
inserted in the main board.
NOTE
3.15
LD301 - Operation and Maintenance, Instruction Manual
VARIABLE DESCRIPTION
Lower Value/Upper Value
Function
Trim_4mA
Trim_20mA
Trim_Zero/Lower
Trim Upper Pressure
Temperature Trim
TRM/PID
Characterization
Multidrop
Pswd/C-Level
Totalization
Table 3.6 – Functions Monitored by the Operation Counter
BACKUP
When the main board is changed, after assembling and powering it, the data saved in the sensor
memory are automatically copied to the main board memory, allowing its operation.
RESTORE
This option allows copying the data saved in the sensor memory to the main board memory. It also
allows restoring to the main board the data stored in the sensor.
When any type of calibration is done.
When any change in the transference function is done, e.g., linear,
square root, const, table.
When the current trim is done at 4mA.
When the current trim is done at 20mA.
When pressure trim is done at Zero or Lower Pressure.
When the trim is done at Upper Pressure.
When any change in the Temperature Trim.
When any change is made in the operation mode, i.e., from PID to TRM
or vice-versa.
When any change is made in any point of the pressure characterization
table in trim mode.
When any change is made in the communication mode, for example,
multidrop or single transmitter.
When any change is made in the password or the level configuration.
When any change is made in the totalization, configuration or in the
reset.
3.16
Section 4
For the transmitter configuration to be totally available, the configurators should be based on PC to be
configurator, such as the Palm Top (HPC401).
ADJUSTMENT
The Magnetic Tool
PROGRAMMING USING LOCAL
ADJUSTMENT
The digital display enables the local adjustment function.
The local adjustment function may be used only through the digital display. The LD301 on transmitter
mode, without display and jumper-configured for simple mode, executes only the calibration function.
If it is on controller mode and without display, the local adjustment cannot be executed. On this
situation and with the display connected, only the OPER and TOTAL functions may be executed.
Figure 4.1 shows the location of the local adjustment female pins to connect the Local Adjustment
Jumpers.
NOTE
utilized (e.g., DDL – device description language), like for instance the CONF401, or the hand held
To select the function mode of the magnetic switches configure the jumpers located at the top of the
main circuit board as indicated in Table 4.1.
SI/COM OFF/ON NOTE
Notes: 1 - If the hardware protection is s elec ted, the EEPROM will be protected.
2 - The local adjust m ent default condition is simple enabled and write protect disabled.
Figure 4.1 - Main Board with Jumpers
WRITE
PROTECT
Disables Disables Disables
1 Enables
Disables
2
Disables Disables
Table 4.1 – Local adjustment Selection
SIMPLE LOCAL
ADJUSTMENT
Disables Disables
Enables
COMPLETE
LOCAL
Disables
Enables
4.1
LD301 - Operation and Maintenance Instruction Manual
MAGNETIZED PART
Moves among options in
Activates the selected
NOTE
parts list.
The transmitter has, under the identification plate, holes for two magnetic switches activated by the
magnetic tool (See Figure 4.2).
Figure 4.2 – Local Zero and Span Adjustment holes and Local Adjustment Switches
The holes are marked with Z (Zero) and S (Span) and from now on will be designated s imply by (Z) and
(S), respectively. Table 4.2 show s the action performed by the magnetic tool while inserted in (Z) and
(S) in accordance with the selected adjustment type.
Browsing the functions and their branches works as follows:
1 - Inserting the handle of the magnetic tool in (Z), the transmitter passes from the normal
measurement state to the transmitter configuration state. The transmitter software automatically
starts to display the available functions in a cyclic routine. The group of functions displayed
depends on the mode selected for the LD301, either Transmitter or Controller.
2 - In order to reach the desired option, browse the options, wait until they are displayed and move the
magnetic tool from (Z) to (S). Refer to Figure 4.3 – Local Adjustment Programming T ree , in order to
know the position of the desired option. By placing the magnetic tool once again in (Z), it is possible
to browse other options within this new branch.
3 - The procedure to reach the desired option is similar to the one described on the previous item, for
the whole hierarchical level of the programming tree.
ACTION
Z
S
SIMPLE LOCAL ADJUSTMENT
TRANSMITTER MODE CONTROLLER MODE
Selects the Lower Range
Value
Selects the Upper Range
Value
OPERATION and TOTAL
Activates the selected Functions
COMPLETE LOCAL
ADJUSTMENT
Moves among all the
options
Functions
Table 4.2 - Local Adjustment Description
For LD301 versions prior to a V6.00, the digital display shall be number 214 - 0108 as per spare
parts list for LD301 V5.XX.
For LD301 versions V6.XX, the digital display shall be number 400-0559, as per the updated spare
SimpleLocal Adjust
4.2
The LD301 works differently when a simple local adjustment is selected in the transmitter mode and in
the controller mode. In the transmitter mode, the simple local adjustment is used for Zero and Span
calibration, and in the controller mode, it restricts the use of the configuration tree to the O PERAT ION
and TOTALIZATION functions.
Zero and Span Reranging
On elevation or suppression measuring configure the user unit to facilitate the local reading.
When programming using local adjustment, the transmitter will not prompt "Co ntro l loo p sho uld b e in
et to return to auto after
configuration is completed.
The LD301 working in the transmitter mode can be very easily calibrated. It requires only Zero and
Span adjustment in accordance with the working range.
To make these adjustments, the instrument must be configured as "transmitter" (XMTR).
Via HART configurator or by using item "M ODE" in option "CONF" of the local adjustment; the ju mpers
shall be configured for simple local adjustment. In case the LD301 display is not connected, the simple
local adjustment is automatically activated.
Zero calibration with reference shall be done as follows:
Apply the Lower Value pressure.
Wait for the pressure to stabilize.
Insert the magnetic tool in the ZERO adjustment hole. (See Figure 4.2)
Wait 2 seconds and soon the transmitter should be reading 4 mA.
Remove the tool.
Zero calibration with reference does not affect the span. In order to change the span, the following
procedure shall be observed:
Apply the Upper Value pressure.
Wait for the pressure to stabilize.
Insert the magnetic tool in the SPAN adjustment hole.
Wait 2 seconds . The transmitter should be reading 20 mA.
Remove the tool.
Zero adjustment causes zero elevation or suppression and a new upper value (URV) are calculated in
accordance with the effective span. In case the resulting URV is higher than the Upper Limit Value
(URL), the URV will be limited to the URL value, and the span will be automatically affected.
Programming Using Local Adjustment
NOTE
Complete Local Adjustment
The transmitter must be fitted with the digital display for this function to be enabled.
The following functions are available for local adjustment: Constant Current , Table Points Adjustment,
User Units, Fail-safe, Current Trim and Pressure Characterization Trim, Totalization Parameters;
Address change and Some items of function INFORMATION
manual!" as it does when using the HART configurator for programming. Therefore it is a good
idea, before configuration, to switch the loop to manual. And do not forg
Local Programming Tree
The local adjustment uses a tree structure where, by placing the magnetic tool in (Z) it is possible to
browse the options of a branch and, by placing it in (S); details of the chosen option are shown. Figure
4.3 - Local Adjustment Programming Tree
WARNING
shows the LD301 available options.
4.3
LD301 - Operation and Maintenance Instruction Manual
Operation [OPER]
Figure 4.3 – Local Adjustment Programming Tree – Main Menu
Actuating in (Z) activates local adjustment. In the transmitter mode, options OPER and TUNE are
disabled; therefore, the main branch starts at the CONF option.
OPERATION (OPER) - Is the option where the operation related parameters of the controller are
configured: Auto/Manual, Setpoint and Manual output.
TUNING (TUNE) - Is the option where the PID-Algorithm related parameters are configured: Action, Kp,
Tr and Td.
CONFIGURATION (CONF) - Is the option where the output and display related parameters are
configured: unit, primary and secondary display, calibration, function and operation mode.
TOTALIZATION (TOTAL) - Is the option used to totalize flow in volume or mass units.
TRIM (TRIM) - Is the option used to calibrate the "without reference" characterization and the digital
reading.
ESCAPE (ESC) - Is the option used to go back to normal monitoring mode.
This adjustment option is applicable to the LD301 configured in the Controller mode. It allows the
control state to be changed from Automatic to Manual and vice versa, and also to adjust the Setpoint
and Manipulated Variable values. Figure 4.4 shows branch OPER with the available options.
4.4
Figure 4.4 – Local Adjustment Operating Tree
Programming Using Local Adjustment
OPERATION BRANCH (OPER)
Z: Moves to the next branch (TUNE).
S: Enters the OPERATION branch, starting with function AUTO/ MANUAL.
Auto/Manual (A/M)
Z: Moves to the SETPOINT INCREASE function.
S: Toggles controller status, Automatic to Manual or Manual to Automatic. A and M
indicate status.
Setpoint Adjustment (SP)
Z: Moves to the SETPOINT DECREASE function.
S: Increases the setpoint until the magnetic tool is removed or 100% is reached.
Z: Moves to the MANIPULATED VARIABLE ADJUSTMENT function.
S: Decreases the setpoint until the magnetic tool is removed or 0% is reached.
Manipulated Variable Adjustment (MV)
Z: Moves to the MANIPULATED VARIABLE DECREASE function.
S: Increases the control output until the magnetic tool is removed or the upper output
limit is reached.
Z: Moves to the SAVE function.
S: Decreases the control output until the magnetic tool is removed or the l ower out put l imit
is reached.
Save (SAVE)
Z: Moves to ESCAPE of the operation menu. S: Saves the setpoint and Manipulated Variable in the transmitter EEPR OM, for use as
power on SP and MV.
4.5
LD301 - Operation and Maintenance Instruction Manual
Escape (ESC)
Z: Moves to the AUTO/ MANUAL function.
S: Escapes to the MAIN menu.
Tuning [TUNE]
This adjustment option is applicable to the LD301 configured in the Controller mode. It allows the
control loop to be tuned, acting on the Proportional, Integral and Derivative terms, and also to alter the
PID mode. The implemented algorithm is a PID type, with the following characteristics:
The proportional action is given by the Proportional Gain and not by the proportional band.
Range: 0 - 100.
Integral action is expressed in minutes per repetition. Range: 0 - 999 min/rep.
The derivative constant is obtained in seconds. Range 0 - 999 seconds.
It is possible to cancel the Integral and Derivative actions by adjusting Tr and Td, respectively to 0.
Figure 4.5 shows branch TUNE with the available options.
TUNING BRANCH (TUNE)
Z: Moves to the CONFIGURATION branch.
S: Enters the TUNING branch, starting with function KP-ADJUSTMENT, proportional
gain increase option.
Kp - Adjust (KP)
Z: Moves to the PROPORTIONAL GAIN DECREASE function.
S: Increases the proportional gain until the magnetic tool is removed or 100 is reached.
Z: Moves to the TR_ADJUSTMENT function.
S: Decreases the proportional gain until the magnetic tool is removed or 0. 0 is reac hed.
Figure 4.5 - Local Adjustment Tuning Tree
4.6
Programming Using Local Adjustment
Tr - Adjust (TR)
Z: Moves to the INTEGRAL TIME DECREASE function.
S: Increases the integral time until the magnetic tool is removed or 999 minutes are
reached.
Z: Moves to the TD_ADJUSTMENT function, derivative time increase option.
S: Decreases the integral time until the magnetic tool is removed or 0 minutes is
reached.
Td - Adjust (TD)
Z: Moves to the DERIVATIVE TIME DECREASE function.
S: Increases the derivative time until the magnetic tool is removed or 999 seconds are
reached.
Z: Moves to the ACTION function.
S: Decreases the derivative time until the magnetic tool is removed or 0 seconds is
reached.
Action (ACT)
Z: Moves to the SAVE function.
S: Toggles the action direct to reverse or reverse to direct.
The far right character of the unit/function-field indicates the present mode:
D = direct action
R = reverse action
Save (SAVE)
Z: Moves to the ESCAPE to TUNING menu.
S: Saves the KP, TR and TD constants in the transmitter EEPROM.
Escape (ESC)
Z: Moves to the KP-ADJUSTMENT function.
S: Escapes to the MAIN menu.
4.7
LD301 - Operation and Maintenance Instruction Manual
Configuration [CONF]
This branch is common for both the Transmitter and the Controller modes. Configuration functions
affect directly the 4-20 mA output current and the display indication. The configuration options
implemented in this branch are the following:
Selection of the variable to be shown on Display 1 and on Display 2.
Working range calibration for the Transmitter and the Controller. Options With and Without
Reference are available.
Digital filter damping time configuration of the readout signal input.
Selection of the transference function to be applied to the measured variable.
Operational mode selection for the LD301: Transmitter or Controller.
Figure 4.6 shows branch CONF with the available options.
4.8
Figure 4.6 – Local Adjustment Configuration Tree
CONFIGURATION BRANCH (CONF)
Z: Moves to the TOTAL branch.
S: Enters the CONFIGURATION branch, starting with function display (LCD_1).
Display 1 (LCD_1)
Z: Moves to the function Display 2 (LCD_2).
S: Starts selection of variable to be indicated as primary display.
After activating (S), you can move around the options available in the follow ing table by
activating (Z). See table 4.3.
The desired variable is activated using (S). Escape leav es primary variable unchanged.
Display 2 (LCD_2)
Display: LCD_1/LCD_2
Description
possible to select option None for Display 2.
Range (RANGE)
Programming Using Local Adjustment
Z: Moves to the RANGE function.
S: Starts selection of variable to be indicated as secondary display.
The procedure for selection is the same as for LCD_1, above.
CO Analog Output Current in mA
MV (%) Output in percentage
PR Pressure in pressure unit
PV (%) Process Variable in percentage
PV Process Variable in user unit
TE Temperature in Celsius degree
SP (%) Setpoint in percentage
SP Setpoint in user unit
ER Error or Deviation in percentage
TO Totalization in totalization unit
NONE - No variable on display (only LCD_2)
ESC Escape
Table 4.3 - Display Indication
NOTE
In the transmitter mode, only the PV%, CO, TE, TO and PV may be displayed. Besides, it is also
Function Calibration (RANGE) presents the calibratio n optio ns as a t ree branch, as described on Figur e
4.7.
RANGE BRANCH (RANGE)
Unit (UNIT)
Figure 4.7 – Local Range Tree
Z: Moves to the FUNCT function, CONF branch.
S: Enters the RANGE branch, starting with the function UNIT.
Z: Moves to the LRV function, LRV decrease option.
S: Start s selection of engineering unit for process variable and setpoint indication. After
activating (S), you can move around the options available in the table below by activ ating
(Z). Using (S) activates the desired unit. Escape leaves the unit unchanged.
4.9
LD301 - Operation and Maintenance Instruction Manual
UNIT
DISPLAY
DESCRIPTION
o
o
o
o
C
C
o
C
o
C
C
InH2O
InHg
ftH2O
mmH2O
mmHg
psi
Bar
Mbar
g/cm2
k/cm2
Pa
kPa
Torr *
atm
ESC
inches water column at 20
inches mercury column at 0
feet water column at 20
millimeter water column at 20
millimeter mercury column at 0
pounds per square inches
bar
millibar
grams per square centimeter
quilograms per square centimeter
Pascals
quilo Pascals
Torr at 0
C
atmospheres
escape
Table 4.4 – Units
* The Torr unit has been changed to mH
O @ 20 ºC for version 6.04 or greater.
2
Lower Range Value Adjustment without Reference (LRV)
Z: Moves to the LRV DECREASE function.
S: Increases the Lower Value until the magnetic tool is removed or the maximum Lower
Value is reached.
Z: Moves to the URV ADJUSTMENT function.
S: Decreases the Lower Value until the magnetic tool is removed or the minimum Low er
Value is reached.
Upper Range Value Adjust without Reference {URV}
Z: Moves to the URV DECREASE function.
S: Increases the Upper Value until the magnetic tool is removed or the maximum Upper
Value is reached.
Z: Moves to the ZERO ADJUSTMENT function.
S: Decreases the Upper Value until the magnetic tool is removed or the minimum U pper
Value is reached.
4.10
Zero Adjust with Reference {ZERO}
Z: Moves to the ZERO DECREASE function.
S: Increases output in transmitter mode, decreases the Lower Pressure Value until t he
magnetic tool is removed or the minimum for the Lower Value is reached. The span is
maintained.
Z: Moves to the SPAN ADJUSTMENT function.
S: Decreases Output in transmitter mode, increases the Lower Pressure Value until the
magnetic tool is removed or the maximum for the Lower Value is reached. The span is
maintained.
Span Adjust with Reference (SPAN)
Z: Moves to the SPAN DECREASE function.
S: Increases the Output in transmitter mode, decreases the U pper Pressure Value until
the magnetic tool is removed or the minimum for the Upper Value is reached.
Z: Moves to the DAMPING function.
S: Decreases the O utput in transmitter mode, increases the Upper Pressure Value until
the magnetic tool is removed or the maximum for the Upper Value is reached.
Damping (DAMP)
Z: Moves to the DAMPING DECREASE function.
S: Increases the damping time constant until the magnetic tool is removed or 128
seconds are reached.
Z: Moves to the SAVE function.
S: Decreases the damping time constant until the magnetic tool is removed or 0
seconds is reached.
Save (SAVE)
Z: Moves to the ESCAPE of RANGE menu.
S: Saves the LRV, URV, ZE RO, S PAN and DA M P values in the tr ansmitter EEPRO M .
Programming Using Local Adjustment
4.11
LD301 - Operation and Maintenance Instruction Manual
3
x
5
x
3
x
5
x
Escape (ESC)
Z: Moves to the UNIT function.
S: Escapes to the FUNCT menu, of the MAIN menu.
Function (FUNCT)
Z: Moves to the MODE function.
S: Starts selection of transfer function. After activating the switch in the hole (S), you
can move around the available options in the table 4.5 by activating (Z).
DISPLAY DESCRIPTION
LINE Linear to Pressure
FUNCTIONS
The desired function is activated using (S). Escape leaves function unchanged.
Escape (ESC)
Operation Mode (MODE)
SQR
SQR3
SQR5
x
TABLE 16 Point Table
SQTB
SQ3TB
SQ5TB
+ 16 Point Table
x
+ 16 Point Table
+ 16 Point Table
ESC escape
Table 4.5 – Functions
Z: Moves to the LINE function.
S: Escapes to the MODE function.
Z: Moves to the ESCAPE to CONF menu.
S: This function is protected by a "password," when prompted PSWD, enter the
password. The password code is entered by inserting and removing the magnetic tool
twice in (S). The first time, the password value is changed from 0 to 1, and the second
time XMTR/PID is shown, meaning that the password w as correct and that the branch is
entered and the setting changed.
4.12
After entering the "password," you can move around the options listed in the table below using (Z). T o
select the desired option, activate (S). See Table 4.6.
Escape (ESC)
Totalization [TOTAL]
This branch is common for both the Transmitter and the Controller modes. Totaliz ation pa ramet ers are
configured via HART Configurator, because it requires a more elaborat e human-machine interface , as
described on Section 3. The functions available in this branch are directly related with the totalized
value, these being stopping or continuing the totalization process and zeroing the totaliz ed value. See
Figure 4.8.
Programming Using Local Adjustment
OPERATION MODES
DISPLAY DESCRIPTION
XMTR Transmitter
PID Controller
ESC escape
Table 4.6 - Operation Modes
Z: Recycles back to the function Display 1 (LCD_1).
S: Escapes to the MAIN menu.
Totalization Branch (TOTAL)
Totalization ON-OFF (TOTAL)
Figure 4.8 – Local Totalization Tree
Z: Moves to the Pressure TRIM branch.
S: Enters the totalization branch, starting with function Total on/ off.
Z: Moves to the RESET function.
S: Toggles the totalization On to Off or Off to On.
4.13
LD301 - Operation and Maintenance Instruction Manual
*
PROTECTED BY PASSWORD. THE PASSWORD CODE IS SIMILAR
THAT DESCRIBED FOR THE OPERATION MODE.
SAVEESC
z
z
s
s
UPPER
ss
zz
UPPER
ZERO
s
z
LOWER
s
z
s
z
LOWER
TRIM *
ESC
s
z
Reset Totalization (RESET)
Z: Moves to the ESCAPE from the totalization menu.
S: Reset the totalization.
Escape (ESC)
Z: Moves to the TOTAL function.
S: Escapes to the main menu.
Pressure Trim [TRIM]
This field of the tree is used to adjust the digital reading according to the applied pressure. The pressure TRIM
differs from RANGING WITH REFERENCE, since the TRIM is used to correct the measure and RANGING
WITH REFERENCE reach only the applied pressure with the output signal of 4 to 20 mA. Figure 4.9 shows the
options available to run the pressure TRIM.
TRIM BRANCH (TRIM)
Zero Pressure Trim (ZERO)
Lower Pressure Trim (Lower)
4.14
Figure 4.9 – Pressure Trim Tree
Z: Moves to ESC function.
S: These functions are protected by a "password." When prompted, PSWD activates (S) 2
times to proceed. After entering the password, the TRIM branch starting with the Zero
Trim function is accessed.
Z: Moves to the LOWER pressure TRIM function.
S: Trims the transmitter internal reference to read 0 at the applied pressure.
Z
:Moves to option DECREASES THE LOWER PRESSURE VALUE.
S: Adjusts the transmitter internal reference, increasing the displayed value that will
be interpreted as the Lower Pressure value corresponding to the applied pressure.
Z: Moves on to function SAVE if the Lower Pressure Trim (LOW ER) is running or to
the Upper Pressure Trim (UPPER).
S: Adjusts the transmitter internal reference, decreasing the displayed value that will
be interpreted as the Lower Pressure value corresponding to the applied pressure.
Upper Pressure Trim (UPPER)
Z: Moves to the decrease upper pressure reading.
S: Sets the transmitter internal reference increasing to the value on the display, which
is the reading of the applied pressure.
Z: Moves to the SAVE function.
S: Sets the transmitter internal reference decreasing to the value on the display, which is
the reading of the applied pressure.
Save (SAVE)
Z: Moves to the ESCAPE from TRIM menu.
S: Saves the UPPER and LOWER TRIM point in the transmitter EEPROM.
Escape (ESC)
Z: Moves to the ZERO TRIM function.
S: Escapes to the MAIN menu.
Escape Local Adjustment [ESC]
This branch of the main tree is used to leave the Local Adjustment mode, placing the Transmitter or
Controller in the monitoring mode
Z: Selects the OPERATION branch (Controller) or CONFIGURATION branch
(Transmitter).
S: Escapes to NORMAL DISPLAY mode.
Programming Using Local Adjustment
.
4.15
LD301 - Operation and Maintenance Instruction Manual
4.16
Section 5
MAINTENANCE
General
Equipments installed in hazardous atmospheres must be inspected in compliance with the IEC6007917 standard.
Below, there are some important maintenance procedures that should be followed in order to have safer
plant and easy maintenance.
In general, it is recommended that end users do not try to repair printed circuit boards. Spare circuit
boards may be ordered from SMAR whenever necessary.
The sensor has been designed to operate for many years without malfunctions. Should the process
application require periodic cleaning of the transmitter, the flanges may be easily removed and
reinstalled.
Should the sensor eventually require maintenance, it may not be changed on the field. In this case, the
possibly damaged sensor should be returned to SMAR for evaluation and, if necessary, repair. Refer to
the "Returning Materials" item at the end of this Section.
Diagnostic using Configuration Tool
Error Messages
Should any problem be noticed regarding the transmitter output, the configurator can be used to verify
what is the problem (see Table 5.1).
The configurator should be connected to the transmitter according to the wiring diagram shown on
Section 1, Figures 1.7, 1.8 and 1.9.
When communicating using the CONFIGURATOR the user will be informed about any problem found by
the transmitter self-diagnostics.
Table 5.1 presents a list of error messages with details for corrective actions that may be necessary.
The line resistance is not according to load limitation.
Excessive noise or ripple in the line.
Low level signal.
Interface damaged.
Power supply with inadequate voltage.
Transmitter line resistance is not according to load limitation.
Transmitter not powered.
Interface not connected or damaged.
Repeated bus address.
Transmitter polarity is reversed.
Interface damaged.
Power supply with inadequate voltage.
Software version not compatible between configurator and transmitter.
Configurator is trying to carry out a LD301 specific command in a transmitter from
another manufacturer.
TRANSMITTER BUSY
XMTR MALFUNCTION
COLD START
Transmitter carrying out an important task, e.g., local adjustment.
Sensor disconnected.
Sensor failure.
Start-up or Reset due to power supplies failure.
5.1
LD301 - Operation and Maintenance Instruction Manual
ERROR MESSAGES POTENTIAL SOURCE OF PROBLEM
OUTPUT FIXED
OUTPUT SATURATED
SV OUT OF LIMITS
PV OUT OF LIMITS
LOWER RANGE VALUE TOO
HIGH
LOWER RANGE VALUE TOO
LOW
UPPER RANGE VALUE TOO
HIGH
UPPER RANGE VALUE TOO
LOW
UPPER & LOWER RANGE
VALUES OUT OF LIMITS
SPAN TOO SMALL
APPLIED PRESURE TOO HIGH
APPLIED PRESURE TOO LOW
EXCESS CORRECTION
PASSED PARAMETER TOO
LARGE
PASSED PARAMETER TOO
SMALL
Output in Constant Mode.
Transmitter in Multidrop mode.
Pressure out of calibrated Span or in fail-safe state (Output current in 3.8 or 20.5
mA).
Temperature out of operating limits.
Temperature sensor damaged.
Pressure out of operation limits.
Sensor damaged or sensor module not connected.
Transmitter with false configuration.
Lower value exceeds 24% of the Upper Range Limit.
Lower value exceeds 24% of the Lower Range Limit.
Upper value exceeds 24% of the Upper Range Limit.
Upper value exceeds 24% of the Lower Range Limit.
Lower and Upper Values are out of the sensor range limits.
The difference, between the Lower and Upper values is less than the 0.75 x (minimum
span).
The pressure applied was above the 24% upper range limit.
The pressure applied was below the 24% lower range limit.
The trim value entered exceeded the factory-characterized value by more than 10%.
Parameter above operating limits.
Parameter below operating limits.
Table 5.1 - Error Messages and Potential Source
Diagnostic via Transmitter
D0 and M0 ranges are available only for 6.05 versions or greater.
Symptom: NO LINE CURRENTProbable Source of Trouble:
Transmitter Connections
Check wiring polarity and continuity.
Check for shorts or ground loops.
Check if the power supply connector is connected to main board.
Power Supply
Check power supply output. The voltage must be between 12 and 45 Vdc at transmitter
terminals.
Electronic Circuit Failure
Check the main board for defect by using a spare one.
NOTE
5.2
Maintenance
Symptom: NO COMMUNICATION
Probable Source of Trouble:
Terminal Connections
Check the terminal interface connection of the configurator.
Check if the interface is connected to the wires leading to the transmitter or to the terminals
[ + ] and [ - ].
Check if the interface is HPI311 – M5P models (for Hart protocol).
Transmitter Connections
Check if connections are according to wiring diagram.
Check if there is resistance in the 250 Ω line. See load limitation in Section 1.
Power Supply
Check output of power supply. The voltage at the LD301 terminals must be between 12 and 45
Vdc, and ripple less than 500 mV.
Electronic Circuit Failure
Locate the failure by alternately testing the transmitter circuit and the interface with spare parts.
Transmitter Address
Check if the transmitter address is compatible with the one expected by the configurator.
Symptom: CURRENT in 21.0 mA or 3.6 mA
Probable Source of Trouble:
Pressure Tap (Piping)
Verify if blocking valves are fully open.
Check for gas in liquid lines or for liquid in dry lines.
Check the specific gravity of process fluid.
Check process flanges for sediments.
Check the pressure connection.
Check if bypass valves are closed.
Check if pressure applied is not above upper limit of the transmitter range.
Sensor to Main Circuit Connection
Sensor connection to the Main Board.
Check connection (male and female connectors).
Electronic Circuit Failure
Check the sensor circuit for damage by replacing it with a spare one.
Replace sensor.
Symptom: INCORRECT OUTPUT
Probable Source of Trouble:
Transmitter Connections
Check power supply voltage.
Check for intermittent short circuits, open circuits and grounding problems.
Noise Measurement Fluid
Adjust damping
Pressure Tap
Check for gas in liquid lines and for liquid in steam or gases lines.
Check the integrity of the circuit by replacing it with a spare one.
Calibration
Check calibration of the transmitter.
5.3
LD301 - Operation and Maintenance Instruction Manual
A 21.0 or 3.6 mA current indicates that the transmitter is in Burnout (TRM) or safety output (PID).
Use the configurator to investigate the source of the problem.
Symptom: DISPLAY INDICATES "FAIL SENS"
NOTE
Probable Source of Trouble:
Sensor Connection to the Main Board
Check the connection (flat cable, male and female connectors).
Type of Sensor Connected to the Main Board
Check if the sensor connected to the main board is the one specified for the LD301 model:
Sensor type shall be hyper - High Performance.
Electronic Circuit Failure
Check if the sensor set is damaged, replacing it for a spare one.
Disassembly Procedure
Do not disassemble with power on.
Figure 5.1 shows a transmitter exploded view and will help you to visualize the following:
Sensor
In order to have access to the sensor (27) for cleaning purposes, the transmitter should be removed
from its process connections. The transmitter should be isolated from the process by means of
manifolds or valves; then, the drain (23) must be opened to vent any remaining pressure.
After this, the transmitter may be removed from the standpipe. The flange bolts (18) may now be
loosened, one at a time. After removing bolts and flanges (17), the isolating diaphragms will be easily
accessible for cleaning.
Cleaning should be done carefully in order to avoid damaging the delicate isolating diaphragms. Use of
a soft cloth and a nonacid solution is recommended.
To remove the sensor from the electronic housing, the electrical connections (in the field terminal side)
and the main board connector must be disconnected.
Loosen the hex screw (8) and carefully unscrew the electronic housing from the sensor, observing if the
flat cable is not excessively twisted.
WARNING
WARNING
To avoid damage do not rotate the electronic housing more than 270º starting from the fully threaded
without disconnecting the electronic circuit from the sensor and from the power supply. See Figure 5.2.
Electronic Circuit
To remove the circuit board (6), loosen the two screws (5), that anchor the board and hold the (7)
spacers in the other side to avoid losing them.
The board has CMOS components, which may be damaged by electrostatic discharges. Observe
correct procedures for handling CMOS components. It is also recommended to store the circuit
boards in electrostatic-proof cases.
5.4
WARNING
Maintenance
Figure 5.1 – Exploded View
5.5
LD301 - Operation and Maintenance Instruction Manual
Pull the main board out of the housing and disconnect the power supply and the sensor connectors.
Reassembly Procedure
Do not assemble with power on.
Sensor
When mounting the sensor (27), make use of a new set of gaskets (19 & 20) compatible with the
process fluid. The bolts, nuts, flanges and other parts should be inspected for corrosion or other
eventual damage. Damaged parts should be replaced.
The O-rings should be lightly lubricated with silicon oil before they are fitted into place. Use halogen
grease on applications having inert filling fluid. The flanges must be positioned on a flat surface. Insert
the gaskets and Backup (28) (only for high pressure) in the flange according to figure 5.1. Set the four
bolts (18) and tighten the nuts (22) initially by hand while keeping the flanges parallel through the whole
mounting and finalize with an adequate tool.
High pressure transmitters A5, A6, M5, M6 and High static pressure H2, H3, H4, H5 and the
sensors with tantalum diaphragm that use Buna-N or Viton O-ring must use a metallic backup Ring
(28) to prevent extrusion of O-ring. Do not use the backup O-Ring when using Teflon O-Rings or
flanges that have Kynar insets (PVDF).
Avoid bending the backup ring and inspect it for knits, cuts etc. Be careful when mounting it. The flat
side, which shines more than the beveled side, shall be mounted against the O-ring (Figure 5.3).
Procedure for tightening the flange screws
With the flanges holding the O-Rings in place, insert the four bolts (18) and tight the nuts (22) finger
tight, making sure the flanges remain parallel all the time.
Figure 5.2 – Sensor Safety Rotation
WARNING
O’RINGS AND BACKUP RINGS FOR HIGH PRESSURE
5.6
Maintenance
Figure 5.3 – Backup Ring Mounting
Tighten one nut till the flange seats;
Tighten the nut diagonally across with a torque of approximately 2.75 ±0.25 Kgf.m;
Tighten the first nut with the same torque;
Verify the flanges alignment;
Check torque on the four bolts.
Should the adapters (26) be removed, it is recommended to replace gaskets (24) and to connect the
adapters to the process flanges before coupling them to the sensor. Optimum torque is 2.75 ±0.25
Kgf.m.
The fitting of the sensor must be done with the main board out of the electronic housing. Mount the
sensor to the housing turning it clockwise until it stops. Then turn it counterclockwise until the cover (1)
is parallel to the process flange (17). Tighten the screw (8) to lock the body to the sensor.
Electronic Circuit
Plug sensor connector and power supply connector to main board. If there is a display, attach it to the
main board by means of 4 screws (3). The display can be installed in any of the 4 possible positions
(See Figure 5.4).
The ”” mark indicates up position.
Pass the screws (5) through the main board holes (6) and the spacers (7) as shown on Figure 5.1 and
tighten them to the body.
After tightening the protective cover (1), mounting procedure is complete. The transmitter is ready to be
energized and tested. It is recommended that adjustment be done on the ZERO TRIM and on the
UPPER PRESSURE TRIM.
5.7
LD301 - Operation and Maintenance Instruction Manual
Figure 5.4 – Four Possible Positions of the Display
Interchangeability
In order to obtain an accurate and better temperature compensated response, each sensor is submitted
to a characterization process and the specific data is stored in an EEPROM located in the sensor body.
The main board, in this operation, reads the sensor serial number and compares it with the number
stored in the main board. In case they do not match, the circuit considers that the sensor has been
changed and will probe the memory of the new sensor for the following information:
Temperature compensation coefficients.
Sensor trim data, including 5-point characterization curve.
Sensor characteristics: type, range, diaphragm material and fill fluid.
Information not transferred during sensor replacement will remain unchanged in the main board
memory. Thus, information such as Upper Value, Lower Value, Damping, Pressure Unit and replaceable
transmitter parts (Flange, O-ring, etc.) shall be updated, depending whether the correct information is
that of the sensor or the main board. In the case of a new sensor, the main board will have the most
updated information; in the opposite case, the sensor will have the correct information. Depending on
the situation, the updating shall be from one or the other.
Data transference from the main board to the sensor or vice versa can also be forced by function
MAINT/BACKUP/READ FROM SENSOR.
Returning Materials
Should it become necessary to return the transmitter and/or configurator to SMAR, simply contact our
office, informing the defective instrument serial number, and return it to our factory.
If it becomes necessary to return the transmitter and/or configurator to Smar, simply contact our office,
informing the defective instrument's serial number, and return it to our factory. In order to speed up
analysis and solution of the problem, the defective item should be returned with the Service Request
Form (SRF – Appendix B) properly filled with a description of the failure observed and with as much
details as possible. Other information concerning to the instrument operation, such as service and
process conditions, is also helpful.
Instruments returned or to be revised outside the guarantee term should be accompanied by a purchase
order or a quote request.
ACCESSORIES
ODERING CODE DESCRIPTION
SD-1
Palm*
HPC401*
HPI311*
*For equipment updates and HPC401 software, just check: http://www.smarresearch.com.
Magnetic Tool for local adjustment.
16 Mbytes Palm Handheld, Including HPC401’s initialization and installation software.
®
HART
HPI311 for the Palm, including the configuration package for the Smar and generic transmitters.
®
HART
interface.
5.8
Maintenance
SPARE PARTS LIST FOR TRANSMITTER
DESCRIPTION OF PARTS
. 1/2 - 14 NPT
HOUSING, Aluminum (NOTE 2)
HOUSING, 316 Stainless Steel (NOTE 2)
COVER (Includes O-ring)
COVER WITH WINDOW FOR INDICATOR (Includes
O-ring)
COVER LOCKING SCREW 9 204-0120
SENSOR LOCKING SCREW Without Head M6 Screw 8 400-1121
EXTERNAL GROUND SCREW 21 204-0124
IDENTIFICATION PLATE FIXING SCREW 12 204-0116
DISPLAY ( Included Screws ) 3 and 4 400-0559
TERMINAL BLOCK INSULATOR 13 400-0058
MAIN BOARD ( Display and mounting Kit Included ) - GLL 1071 6 400-0557 A
MAIN BOARD ( Display and Mounting Kit not Included ) – GLL 1071 6 400-0558 A
MAIN BOARD with Mounting Kit and without display - GLL 1071 6 400-0587 A
FIXATION MAIN BOARD KIT
( Screws and Spacers )
PLUG
ADAPTOR FOR ELECTRIC CONNECTION 3/4 NPT female for 1/2 NPT male, SST 316 - 400-0812
DRAIN/ VENT VALVE 316 SST 30 400-0792
FLANGE (WITH HOLE FOR DRAIN/VENT)
FLANGE (WITH HOLE FOR DRAIN/VENT) setting
and 7/16” UNF connection SAE J1926
FLANGE (WITHOUT HOLE FOR DRAIN/VENT)
BLANK FLANGE (FOR GAGE AND ABSOLUTE
MODELS)
ADAPTER
O-RINGS (NOTE 3)
BACKUP RING (NOTE 3)
TERMINAL BLOCK INSULATOR SCREW
MAIN BOARD SCREW FOR HOUSING, Aluminum
MAIN BOARD SCREW FOR HOUSING, 316 SS
FLANGE BOLT
FLANGE NUT
ADAPTER BOLT
DRAIN/VENT SCREW
FLANGE PLUG (STOPPER)
MOUNTING BRACKET FOR 2" PIPE MOUNTING
(NOTE 5)
LOCAL ADJUSTMENT PROTECTION CAP 11 204-0114
SENSOR 27
. M20 x 1.5
. PG 13.5 DIN
. 1/2 - 14 NPT
. M20 x 1.5
. PG 13.5 DIN
. Aluminum
. 316 SST
. Aluminum
. 316 SST
316 SST 5 and 7 400-0560
1/2 NPT Internal Hexagon Plug in Plated CS (Ex d)
1/2 NPT Internal Hexagon Plug in 304 SST (Ex d)
M20 X 1.5 External Hexagon Plug in 316 SST (Ex d)
PG 13.5 External Hexagon Plug in 316 SST (Ex d)
1/2 NPT Internal Socket Set Plug in Plated CS
1/2 NPT Internal Socket Set Plug in 304 SST
. HOUSING, Aluminum
. HOUSING, 316 SST
. Units With indicator
. Units Without indicator
. Units With indicator
. Units Without indicator
. CS
. SST 316
. CS
. SST 316
. CS
. SST 316
. SST 316
. Hastelloy C276
. Monel 400
. SST 316
. Hastelloy C276
. Monel 400
. CS
. SST 316
. CS with bolts, nuts, washers and U-clamp in 316SS
POSITIONCODECATEGORY (NOTE 1)
10
10
10
10
10
10
1 and 15
1 and 15
1
1
29
29
29
29
29
29
17
17
17
17
17
17
17
17
17
17
17
17
17
26
26
26
26
2
20
19
19
19
19
19
24
24
24
24
28 203-0710 B
14
14
5
5
5
5
18
18
22
22
25
25
23
23
23
16
16
16
-
-
-
204-0130
204-0131
204-0132
204-0133
204-0134
204-0135
204-0102
204-0105
204-0103
204-0106
400-0808
400-0809
400-0810
400-0811
400-0583-11
400-0583-12
204-0501
204-0502
204-0503
204-0504
400-1133
400-1134
400-1135
204-0511
204-0512
204-0513
204-0514
204-1101
204-1102
203-0601
203-0602
203-0603
203-0604
204-0122
204-0113
203-0401
203-0402
203-0403
203-0404
203-0405
203-0701
203-0702
203-0703
203-0704
304-0119
204-0119
304-0118
304-0117
204-0118
204-0117
203-0300
203-0310
203-0302
203-0312
203-0350
203-0351
203-1401
203-1402
203-1403
203-0552
203-0553
203-0554
203-0801
203-0802
203-0803
(NOTE 4)
B
B
B
B
B
B
B
B
B
B
B
A
A
A
A
A
A
B
5.9
LD301 - Operation and Maintenance Instruction Manual
NOTE
( 1 ) For category A, it is recommended to keep, in stock, 25 parts installed for each set, and
20 for category B.
( 2 ) Includes Terminal Block, Screws, caps and Identification plate without certification.
( 3 ) O-rings and Backup Rings are packaged in packs of 12 units, except for spring loaded.
Smar Insulator Kit
Smar Insulator Kit Mounting
The Insulator Kit Smar prevents the generation of galvanic current between metals when in contact. The
difference of potential between the metals generates this current that flows from the metal with higher
potential to the metal with lower potential. This process in the presence of aqueous solution with salts,
acids or bases can start the corrosion process, where the corroded metal is always the one with bigger
potential (anode).
In the processes, when it is impossible to isolate the two potencialized metals, occurs the generation of
galvanic current. This current will form free ions of hydrogen (H
to start the corrosion and the migration of the Hydrogen to the diaphragm of the Remote Seal or of the
Level Transmitter.
The figure 5.5 shows the following parts that constitute the Smar Insulator Kit: Teflon Gasket (6),
Nonmetallic Insulating Sleeve (4), Mica Washers (3) and Steel Washers (2).
Mounting step by step:
1 – Insert all the Nonmetallic Insulating Sleeve (4) in the holes of the Sealed Flange (5);
2 – Put the Teflon Gasket (6) between the Flanges (5 e 7);
3 – Insert the Steel Washers (2) and the Mica Washers (3) in the bolts (1)
4 – Join the Flanges positioning its holes (5 and 7);
5 – Introduce the bolts in the holes of the flanges (5 and 7) and tighten the flanges with the nuts (8)
6 – Measure the resistance between the Sealed Flange (5) and the Flange of Process (7) that should be
tending to the infinite to check the efficiency of the Insulator Kit.
If the studs are used instead of the bolts, obey the same mounting sequence for the items 2, 3 and 4.
This Insulator Kit can be applied with raised and flat face flanges.
The Gasket must be made of Teflon when the Smar Insulator Kit is indicated.
( 4 ) To specify sensors, use the following tables.
( 5 ) Including U-Clamp, nuts, bolts and washers
( 6 ) For this type, O-Ring pack has 1 piece.
+
) in one of the solutions, with tendency
NOTE
8
5.10
7
6
5
4
3
2
1
Bolt
1
Steel Washer
2
Mica Washer
3
Nonmetallic Isolating Sleeve
4
5
Sealed Flange
6
Sealing Gasket in Teflon
7
Process Flange
Nuts
8
Figure 5.5 – Insulator Kit Mounting
Maintenance
INSULATOR KIT SPARE PARTS: LD300L
ØN GROUP NORM
150
1”
1.1/2”
2”
3”
4”
DN25
DN40
DN50
DN80
DN100
40A
50A
80A
100A
300 400-0861-12X01 400-0861-12X11
600 400-0861-13X01 400-0861-13X11
150 400-0861-21X01 400-0861-21X11
300 400-0861-22X01 400-0861-22X11
600 400-0861-23X01 400-0861-23X11
150 400-0861-31X01 400-0861-31X11
300 400-0861-32X01 400-0861-32X11
600 400-0861-33X01 400-0861-33X11
150 400-0861-41X01 400-0861-41X11
300 400-0861-42X01 400-0861-42X11
600 400-0861-43X01 400-0861-43X11
150 400-0861-51X01 400-0861-51X11
300 400-0861-52X01 400-0861-52X11
600 400-0861-53X01 400-0861-53X11
PN10/40
PN10/40 400-0861-74X01 400-0861-74X11
PN10/40 400-0861-84X01 400-0861-84X11
PN10/40 400-0861-94X01 400-0861-94X11
PN16 400-0861-A8X01 400-0861-A8X11
PN40 400-0861-A4X01 400-0861-A4X11
20K
10K 400-0861-C5X01 400-0861-C5X11
40K 400-0861-C7X01 400-0861-C7X11
10K 400-0861-D5X01 400-0861-D5X11
20K 400-0861-D6X01 400-0861-D6X11
10K 400-0861-E5X01 400-0861-E5X11
MODELS WITHOUT EXTENSION MODELS WITH EXTENSION
LD300L / SR301T LD300L / SR301E
400-0861-11X01 400-0861-11X11
ANSI B 16.5
400-0861-64X01 400-0861-64X11
DIN EN1092-1
400-0861-B6X01 400-0861-B6X11
JIS B 2202
Table 5.2 – LD300L – Codes to the Spare Parts of the InsulatorKit
See Figure 5.5.
5.11
LD301 - Operation and Maintenance Instruction Manual
e
ØN GROUP NORM
1”
1.1/2”
2”
3”
4”
DN25
DN40
DN50
DN80
DN100 PN10/16
DN100 PN25/40
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
Table 5.3 – LD301L – Codes to the Spare parts of the Gasket
Sealing
Gasket
SPARE PARTS: LD300L
GASKET
TEFLON COPPER GRAFOIL
400-0425 400-0426 400-0427
400-0428 400-0429 400-0430
400-0431 400-0432 400-0433
400-0434 400-0435 400-0436
ANSI-B16.5
400-0437 400-0438 400-0439
400-0440 400-0441 400-0442
400-0443 400-0444 400-0445
400-0446 400-0447 400-0448
400-0449 400-0450 400-0451
400-0452 400-0453 400-0454
EN 1092-1/2501
400-0455 400-0456 400-0457
Sealing
Gasket
DRAIN
VALVE
STAINLESS
STEEL 316L
400-0792
Sealing
Gasket
Housing
Drain Val ve
MOUNTING WITH
FF FLANGE
Figure 5.6 – Exploded View - Mounting with Gasket and Drain Valve
Table 5.5 - LD300L – Special models for Gasket in Steel – Without Extension
Application with Halar
Technical Specification
Halar® is chemically one of the most resistant fluoropolymer. It is a thermoplastic of the melting process
manufactured by Solvay Solexis, Inc. For its chemical structure, a 1:1 alternating ethylene copolymer
and chlorinetrifluoroethylene, Halar
The diaphragms in 316L Stainless Steel covered with Halar
aggressive liquids. They offer excellent resistance to the chemic and abrasion with a wide temperature
range. Halar
®
does not contaminate liquids of high purity and it is not affected by most of corrosive
chemists, usually found in the industries, including strong minerals, oxidant acids, alkalis, liquid oxygen
and some organic solvents.
®
Halar
is trademark of Solvay Solexis, Inc.
Performance Specification
For the performance specification see the equation below:
[1% SPAN x (URL/SPAN)] - Included temperature error*
Diameters/Capillary Length:
- 2” ANSI B 16.5, DN 50 DIN, JIS 50 A, for seals up to 3 meters of capillary and level models (by
inquiry).
- 3” ANSI B 16.5, DN 80 DIN, JIS 80 A, for seals up to 5 meters of capillary and level models.
- 4” ANSI B 16.5, DN 100 DIN, JIS 100 A, for seals up to 8 meters of capillary and level models.
*Temperature Limits:
+10 to 100°C;
+101 to 150°C (by inquiry).
TPE – Total Probable Error (Software)
Software to calculate the assembly error of the Pressure Transmitters with the possible connections to
the process.
TPE was developed to a fast and effective aid of the products related the pressure measurement. The
users are the Applications Engineer and Commercial Areas. The customer can request a report of
performance estimate to Smar.
This product allows doing simulations of possible assemblies, verifying important data as the error
estimates of the response time, of capillary length analysis and mechanical resistance of diaphragms
with temperature variation. See an example in the Figure 5.8.
METALLIC RING
316L SST
R35 400-0899
® (ECTFE) offers an only combination of useful properties.
®
, are ideal for applications in contact with
5.14
Maintenance
Figure 5.8 – TPE Software Screen
Ordering Code for the Sensor
204 – 0301 SENSOR FOR DIFFERENTIAL , FLOW, GAGE, ABSOLUTE AND HIGH STATIC PRESSURE TRANSMITTER
COD
Type
D0
Differential and Flow
D1
Differential and Flow
Differential and Flow
D2
Differential and Flow
D3
Differential and Flow
D4
M0
Gage
M1
Gage
M2
Gage
Gage
M3
Gage
M4
Gage
M5
Gage
M6
A1
Absolute
A2
Absolute
A3
Absolute
Absolute
A4
Absolute
A5
Absolute
A6
H2
Differential – High Static Pressure
H3
Differential – High Static Pressure
Differential – High Static Pressure
(1) Meets NACE MR – 01 – 75/ISO 15156 recommendations.
(2) Not available for absolute models nor for vacuum applications.
(3) Not available for range 0 and 1.
(4) Silicone Oil is not recommended for oxygen (O
) or Chlorine service.
2
(5) Inert Fluid: Oxygen Compatibility, safe for oxygen service.
204-0301 SENSOR FOR FLANGED PRESSURE TRANSMITTER (CONTINUATION)
Flanges Bolts and Nuts Material
CODE
Plated Carbon Steel (Default) (22)
A0
A1
316 SST
A2
Carbon Steel (ASTM A193 B7M) (1) (22)
Flange thread for Fixing Accessories (Adapters, Manifolds, Mounting Brackets, etc)
CODE
D0
7/16” UNF (Default)
M10 X 1.5
D1
Flange Facing Finish
CODE
Q0
Raised Face – RF (Default)
Flat Face – FF
Q1
Ring Joint Face – RTJ (Only available for ANSI standard flange) (17)
Q2
Tongue Face (11)
Q3
Grooved Face (11)
Q4
Hastelloy C276
A5
M12 X 1.75
D2
204-0301 A0 D0 Q0
NOTES
( 1 ) Meets NACE MR – 01 – 75/ISO 15156 recommendations.
( 2 ) Silicone Oils not recommendations for Oxygen (O
service.
( 3 ) Not applicable for vacuum service.
( 4 ) Drain/Vent not applicable.
( 5 ) O’Ring should be Viton or Kalrez.
( 6 ) Maximum pressure 24 bar.
( 7 ) For remote Seal only 316 SST - CF8M (ASTM A3510 flange is
available (threadM12).
( 8 ) Fluorolube fill fluid is not available for Monel diaphragm.
( 9 ) Options not certified for hazardous locations.
(10) Attention, check corrosion rate for the process, tantalum plate
0.1 mm, AISI 316L extension 3 to 6mm.
(11) Item by inquiry.
(12) Supplied without Gasket.
(13) Without certification for Explosion proof certification or
Intrinsically safe.
(14) Limited values to 4 1/2 digits; limited unit to 5 characters.
(15) Degreaser’s cleaning is not available for carbon steel flanges
(16) The insulator kit is applicable with Raised Face (HO) and
Smooth Face (H1) with Gasket material.
T(Teflon) and only for the following models:
- For models with extension the Gasket T (Teflon) it has special
share.
(17) Gasket for housing, available only in Stainless 316.
(18) Finishing flange faces:
ANSI B 16.5 / MSS-SP6:
- Raised or Smoth Face with gooved lining: 3.2 to 6.3 µm Ra
(125 a 250 µ” AA);
- Small or Large Tongue Face and Small or Large Groove with
smooth finishing not exceeding: 3.2 µm Rt (125 µ” AA);
- Grooved finishing “B1” (PN 10 a PN40): 3.2 a 12.5 µm Ra (125 a 500
µ” AA);
- Smooth finishing “B2” (PN 63 a PN100), “C” (Tongue) e “D” (Groove):
0.8 a 3.2 µm Ra (32 a 125 µ” AA).
Din 2501 (DIN 2526):
- Smooth finishing “E” (PN 160 a PN250): Rz = 16 (3.2 µm Ra (125 µ”
AA).
Standard Jis B2201
- Grooved finishing 3.2 a 6.3 µm Ra (125 a 250 µ” AA).
(19) Range of application of temperature from -40 ºC to 150 ºC.
(20) Applicable only to:
- Thickness of steel: 0.05 mm
- Diameter/capillary length:
2” ANSI B 16.5 DN 50 DIN, JIS 50 A, for seals up to 3 meters of
capillary and level models (by inquiry).
3” ANSI B 16.5 DN 80 DIN, JIS 80 A, for seals up to 5 meters of
capillary and level models.
- Faces: RF and FF;
- Temperature Range: +10 to 100 ºC
+ 101 to 150 ºC (by inquiry)
- Not applicable for diaphragm thickness;
- Not applicable for use with gaskets.
(21) Inert Fluid: Oxygen Compatibility, safe for oxygen service.
(22) Not applicable for saline atmosphere.
(23) Not available for slip-on flange.
(24) Not available for integral flange.
5.17
LD301 - Operation and Maintenance Instruction Manual
204-0301 SENSOR FOR SANITARY PRESSURE TRANSMITTER
Range Limits
COD.
Min. Max. Min. Max.
S2
-50
S3
-250
-2500
S4
S5
2500
-25000
Diaphragm Material and Fill Fluid (Low Side)
COD.
1
316L SST
2
316L SST
3
Hastelloy C276
4
Hastelloy C276
Monel 400
5
Tantalum
7
Tantalum
8
316L SST
9
Monel 400
A
COD.
Min.
Unit
Span
50
1.25
250
25000
Flange, Adapter and Drain/Vent Valves Material (Low Side)
204-0301 SENSOR FOR SANITARY PRESSURE TRANSMITTER (CONTINUATION)
Flanges Bolts and Nuts Material
CODE
A0
Plated Carbon Steel (Default) 13)
A1
316 SST
A2
Carbon Steel (ASTM A193 B7M) (1) (13)
Flange Thread for Fixing Accessories (Adapters, Manifolds, Mounting Brackets, etc)
CODE
D0
7/16” UNF (Default)
M10 X 1.5
D1
Hastelloy C276
A5
M12 X 1.75
D2
204-0301 A0 D0
NOTES
( 1 ) Meets NACE MR – 01 – 75/ISO 15156 recommendations.
( 2 ) Silicone Oils not recommendations for Oxygen (O
( 3 ) Not applicable for vacuum service.
( 4 ) Drain/Vent not applicable.
( 5 ) O’Ring should be Viton or Kalrez.
( 6 ) Maximum pressure 24 bar.
( 7 ) For remote Seal only 316 SST - CF8M (ASTM A3510 flange is available (threadM12).
( 8 ) HP – High Pressure
( 9 ) Not available for tri-clamp connections.
(10) Compliant with 3A-7403 standard for food and other applications where sanitary connections are required:
- Neobee M2O Fill Fluid
- Finishing wet Face: 0.8 µm Ra (32 µ" AA)
- Wet O-Ring: Viton, Buna-N and Teflon
(11) Item by inquire.
(12) Inert Fluid: safe for oxygen service.
(13) Not applicable for saline atmosphere.
TYPICAL MODEL NUMBER
) or Chlorine service.
2
Maintenance
5.19
2
2
2
2
2
2
3
16
HART® Special Units
VARIABLE CODE
PRESSURE
VOLUMETRIC
LOW
F
5.20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
145
237
238
239
15
16
17
18
19
22
23
24
25
26
27
28
29
30
31
121
122
123
130
131
132
133
134
135
136
137
138
235
UNIT
O (68ºF)
inH
2
inHg (0ºC)
O (68ºF)
ftH
2
mmH
O
2
(68ºF)
mmHg (0ºC) millimeters of mercury at 0 degrees
lb/in
bar
mbar
gf/cm
kgf/cm
Pa
kPa
torr
atm
O (60ºF)
inH
MPa
O (4ºC)
inH
mmH
O (4ºC)
CFM
GPM
l/min
ImpGal/min
m³/h
gal/s
Mgal/d
l/s
Ml/d
ft³/s
ft³/d
m³/s
m³/d
ImpGal/h
ImpGal/d
Nm³/h
Nl/h
ft³/min
CFH
m³/h
bbl/s
bbl/min
bbl/h
bbl/d
gal/h
ImpGal/s
l/h
gal/d
DESCRIPTION
inches of water at 68 degrees F
inches of mercury at 0 degrees C
feet of water at 68 degrees F
millimeters of water at 68 degrees F
C
pounds per square inch
bars
millibars
Gram force per square centimeter
Kilogram force per square centimeter
pascals
kilopascals
torr
atmospheres
inches of water at 60 degrees F
megapascals
inches of water at 4 degrees C
millimeters of water at 4 degrees C
cubic feet per minute
gallons per minute
liters per minute
imperial gallons per minute
cubic meters per hour
gallons per second
million gallons per day
liters per second
million liters per day
cubic feet per second
cubic feet per day
cubic meters per second
cubic meters per day
imperial gallons per hour
imperial gallons per day
normal cubic meters per hour
normal liters per hour
standard cubic feet per minute
cubic feet per hour
cubic meters per hour
barrels per second
barrels per minute
barrels per hour
barrels per day
gallons per hour
imperial gallons per second
liters per hour
gallons per day
VARIABLE CODE
VELOCITY
TEMPERATURE
ELECTRO
MAGNETIC FORCE
ELECTRIC
RESISTANCE
ELECTRIC
CURRENT
VOLUME
LENGTH
TIME
MASS
20
21
114
115
116
120
32
33
34
35
36
58
37
163
39
40
41
42
43
46
110
111
112
113
124
166
167
168
236
44
45
47
48
49
151
50
51
52
53
60
61
62
63
64
65
125
UNIT
ft/s
m/s
in/s
in/min
ft/min
m/h
ºC
ºF
ºR
K
mV
V
ohm
kohm
mA
gal
l
ImpGal
m
bbl
bushel
yd³
ft³
in³
bbl(liq)
Nm³
Nl
SCF
hl
ft
m
in
cm
mm
ftin
min
s
h
d
g
kg
t
lb
Shton
Lton
oz
Maintenance
DESCRIPTION
feet per second
meters per second
inches per second
inches per minute
feet per minute
meters per hour
degrees Celsius
degrees Fahrenheit
degrees Rankine
degrees Kelvin
millivolts
volts
ohms
kilo ohms
milliamperes
gallons
liters
imperial gallons
cubic meters
barrels
bushels
cubic yards
cubic feet
cubic inches
liquid barrels
normal cubic meter
normal liter
standard cubic feet
hectoliters
feet
meters
inches
centimeters
millimeters
feet in sixteenths
minutes
seconds
hours
days
grams
kilograms
metric tons
pounds
short tons (2000 pounds)
long tons (2240 pounds)
ounce
VARIABLE CODE
VISCOSITY
ENERGY
INCLUDES
(
WORK)
MASSFLOW
MASS PER
OLUME
V
54
55
69
89
126
128
162
164
165
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
90
91
92
93
94
95
96
97
98
99
100
102
103
104
146
147
148
UNIT
cSt
cP
N-m
decatherm
ft-lb
KWH
Mcal
MJ
Btu
g/s
g/min
g/h
kg/s
kg/min
kg/h
kg/d
t/min
t/h
t/d
lb/s
lb/min
lb/h
lb/d
Shton/min
Shton/h
Lton/d
Lton/h
Lton/d
SGU
g/cm³
kg/m³
lb/gal
lb/ft³
g/ml
kg/l
g/l
lb/in³
ton/yd³
degTwad
degBaum hv
degBaum lt
deg API
µg/l
µg/m³ micrograms per cubic
%Cs
DESCRIPTION
centistokes
centipoises
newton meter
deka therm
foot pound force
kilo watt hour
mega calorie
mega joule
british thermal unit
grams per second
grams per minute
grams per hour
kilograms per second
kilograms per minute
kilograms per hour
kilograms per day
metric tons per minute
metric tons per hour
metric tons per day
pounds per second
pounds per minute
pounds per hour
pounds per day
short tons per minute
short tons per hour
short tons per day
long tons per hour
long tons per day
specific gravity units
grams per cubic centimeter
kilograms per cubic meter
pounds per gallon
pounds per cubic foot
grams per milliliter
kilograms per liter
grams per liter
pounds per cubic inch
short tons per cubic yard
degrees twaddell
degrees Baume heavy
degrees Baume light
degrees API
micrograms per liter
meter
percent consistency
VARIABLE CODE
ANGULAR
VELOCITY
POWER
MISCELLANEOUS
117
118
119
127
129
140
141
142
38
56
57
59
66
67
68
101
105
106
107
108
109
139
143
144
149
150
152
153
154
155
160
161
169
240
UNIT
º/s
rev/s
RPM
kW
hp
Mcal/h
MJ/h
Btu/h British thermal unit per
Hz
µS
%
pH
mS/cm milli siemens per
µS/cm micro siemens per
N
degbrix
%sol/wt percent solids per
%sol/vol percent solids per
degBall
proof/vol
proof/mass
ppm
º
rad
%vol
%stm qual
ft³/lb
pF
ml/l
µl/l
% plato
LEL percent lower explosion
ppb
- May be used for
to 249
GENERIC
250
251
252
253
-
-
-
-
Note: Information extracted from HART
Maintenance
DESCRIPTION
degrees per second
revolutions per second
revolutions per minute
kilo watt
horsepower
mega calorie per hour
mega joule per hour
hour
hertz
micro siemens
percent
pH
centimeter
centimeter
newton
degrees brix
weight
volume
degrees balling
proof per volume
proof per mass
parts per million
degrees
radian
volume percent
percent steam quality
cubic feet per pound
picofarads
milliliters per liter
microliters per liter
percent plato
level
parts per billion
manufacturer specific
definitions
Not Used
None
Unknown
Special
®
Protocol Specification.
5.21
LD301 - Operation and Maintenance Instruction Manual
5.22
Section 6
Functional Specifications
Process Fluid
Indicator
Hazardous Area
Authorized re
presentative in European Community
Zero and Span
Output
Power Supply
Certifications
TECHNICAL CHARACTERISTICS
Liquid, gas or steam.
Two-wire, 4 - 20 mA controlled according to NAMUR NE-43 specification, with superimposed digital
communication (HART® Protocol).
12 to 45 Vdc.
Transient Suppressor
V
= 65V pick; Differential mode - bi-directional; Low current leak and capacitance;
max
meets the standards: IEEE61000-4-4 and IEEE61000-4-5;
Less than 5 ns response time.
4 1/2 -digit numerical and 5-character alphanumerical LCD indicator (optional).
Intrinsically Safe (FM, CSA, NEMKO, EXAM, CEPEL, NEPSI), explosion proof (FM, CSA, NEMKO, CEPEL,
NEPSI), dust ignition proof (FM) and non-incendive (FM).
This product is in compliance with the directive and it was designed and manufactured in accordance with
sound engineering practice using several standards from ANSI, ASTM, DIN and JIS.
EMC Directive (2004/108/EC) - Eletromagnetic Compatibility
The EMC test was performed according to IEC standard: IEC61326-1:2006, IEC61326-2-3:2006, IEC610006-4:2006, IEC61000-6-2:2005. For use in environment only.
Keep the shield insulated at the instrument side, connecting the other one to the ground if necessary to use
shielded cable.
ATEX Directive (94/9/EC) – Equipment and protective systems intended for use in potentially
explosive atmospheres
This product was certified according European Standards at NEMKO and EXAM (old DMT). The certified
body for manufacturing quality assessment is EXAM (number 0158).
LVD Directive 2006/95/EC – Electrical Equipment designed for use within certain voltage limits
According the LVD directive Annex II the equipment under ATEX “Electrical equipment for use in an
explosive atmosphere” directive are excluded from scope from this directive.
The EC declarations of conformity for all applicable European directives for this product can be found at
www.smar.com.
No interactive, via digital communication.
Jumper local adjustment with three positions: simple, disable, and complete.
Load Limitation
6.1
LD301 – Operation and Maintenance Instruction Manual
Functional Specifications
Output Current
Pressure (%)
103.25%
Pressure
Pressure
Turn
-
on Time
Volumetric
From 3.45 kPa abs. (0.5 psia)* to:
In case of sensor or circuit failure, the self-diagnostics drives the output to 3.6 or 21.0 mA, according to the
user's choice and NAMUR NE43 specification. Detailed diagnostic through HART
Overpressure
and
Static Pressure
Limits (MWP –
Maximum
Working
Pressure)
4.0
0%
Saturated
Failure
Maximum Detected
3.8
3.6
Minimum Detected
-1.25%
-1.25%100%
Ambient: -40 a 85 °C (-40 a 185 °F)
Process: -40 a 100 °C (-40 a 212 °F) (Silicone oi l)
-40 a 85 °C (-40 a 185 °F) (Halocarbon and Ine rt oil)
0 a 85 °C ( 32 a 185 °F) (Inert oil)
-20 a 85 °C ( -4 a 185 °F) (Inert Krytox Oil and Fomblim oil)
-25 a 100 °C (-13 a 212 °F) ( Viton O’ring)
-40 a 150 °C (-40 a 302 °F) (Level Model)
Storage: -40 a 100 °C (-40 a 212 °F)
Display: -20 a 80 °C ( -4 a 176 °F)
-40 a 85 °C (-40 a 185 °F) (Without damange)
Performs within specifications in less than 3 seconds after power is applied to the transmitter.
By digital communication (HART® protocol) using the configuration software CONF401, DDCON100 (for
Windows), or HPC301 and HPC401 (for Palm). It can also be configured using DD and FDT/DTM tools, and
can be partially configured through local adjustment.
In order to keep the equipment configuration safe, the LD301 has two kinds of write protection in its memory.
One is via software and the other a hardware mechanism selected by a key with priority over the software.
Less than 0.15 cm3 (0.01 in3)
5 bar (70 psi) for range 0
80 bar (1200 psi) for range 1
160 bar (2300 psi) for ranges 2, 3 & 4
320 bar (4600 psi) for models H2 to H4
400 bar (5800 psi) for range 5
520 bar (7500 psi) for range 6
* except the LD301A model
Flange Test Pressure: 68.95 MPa (1000 psi)
ANSI B 16.5 Pressure Class
Class 150 300 600
Temperature Pressure Limit
-29 a 38 °C
93 °C
149 °C
1893 kPa
(274,6 psi)
1618 kPa
(234.7 psi)
1481 kPa
(214.8 psi)
4962 kPa
(719 psi)
4275 kPa
(620 psi)
3864 kPa
(560.4 psi)
9924 kPa
(1439.4 psi)
8551 kPa
(1240.2 psi)
7717 kPa
(1119.3 psi)
6.2
Humidity Limits
Damping
Adjustment
Reference
Conditions
Accuracy
Stability
Temperature
Effect
Technical Characteristics
Functional Specifications
DIN EN 1092-1 / DIN 2501
Flange Material: 316L Stainless Steel
Temperature - 10 a 50 °C 50 °C 100 °C 150 °C
PN Pressure Limit
16
40
The overpressure above are not likely to damage the transmitter, although a new calibration may be needed.
1230 kPa
(178.4 psi)
3060 kPa
(443.8 psi)
1180 kPa
(171.1 psi)
2960 kPa
(429.3 psi)
1020 kPa
(148 psi)
2550 kPa
(370 psi)
930 kPa
(135 psi)
2310 kPa
(335 psi)
0 to 100% RH (Relative Humid).
User configurable from 0 to 128 seconds (via digital communication).
Performance Specifications
Span starting at zero, temperature of 25°C (77°F), atmospheric pressure, power supply of 24 Vcc, silicone
oil fill fluid, isolating diaphragms in 316L SST and digital trim equal to lower and upper range values.
For range 0, and differential or gage models and 316L SST or hastelloy diaphragm with silicon or
halocarbon filling fluid:
For ranges 2, 3 or 4 and level model and 316L SST diaphragm with silicon or halocarbon filling fluid
with maximum pressure matching the flange pressure class:
Linearity effects, hysterese and repeatability are included.
For ranges 2, 3, 4, 5 and 6: ± 0.15% of URL for 5 years at 20 ºC temperature change and up to 7 MPa
(1000 psi) of static pressure.
For ranges 0 and 1: ± 0.2% of URL for 12 months at 20 ºC temperature change and up to 100 kPa (1bar)
of static pressure.
For Level model: ± 0.2% of URL for 12 months at 20 ºC temperature change.
For ranges 2, 3, 4 and 5:
LD301 – Operation and Maintenance Instruction Manual
Performance Specifications
6 mmH2O per 20 ºC for 4" and DN100
17 mmH
O per 20 ºC for 3" and DN80
2
Consult Smar for other flange dimensions and fill fluid.
Zero error:
For ranges 2, 3, 4 and 5: ± 0.033% of URL per 7MPa (1000 psi)
For range 1: ± 0.05% of URL per 1.7 MPa (250 psi)
For range 0: ± 0.1% of URL per 0.5 MPa (5 bar)
For Level model: ± 0.1% of URL per 3.5 MPa (500 psi)
Static Pressure
Effect
The zero error is a systematic error that can be eliminated by calibrating at the operating static pressure.
Span error:
For ranges 2, 3, 4, 5 and 6: correctable to ± 0.2% of reading per 7MPa (1000 psi)
For range 1 and level transmitters: correctable to ± 0.2% of reading per 3.5 MPa (500 psi)
For range 0: correctable to ± 0.2% of reading per 0.5 MPa (5 bar) (70 psi)
Power Supply
Effect
Mounting Position
Effect
Electromagnetic
Interference Effect
± 0.005% of calibrated span per volt
Zero shift of up to 250 Pa (1 inH2O) which can be calibrated out.
No span effect.
Approved according to IEC61326-1:2006, IEC61326-2-3:2006, IEC61000-6-4:2006, IEC61000-6-2:2005.
Physical Specifications
1/2
- 14 NPT
3/4
- 14 NPT with 316 SST adapter for
Electrical
Connection
Process
Connection
Wetted Parts
Nonwetted Parts
3/4
- 14 BSP with 316 SST adapter for
1/2
- 14 BSP with 316 SST adapter for
M20 X 1.5
PG 13.5 DIN
1/4 - 18 NPT or 1/2 -14 NPT (with adapter)
For level models or other options, see the Ordering Code.
Buna N, Viton™ PTFE or Ethylene-Propylene.
The LD301 is available in NACE MR-01-75/ISO 15156 compliant materials.
Electronic Housing:
Injected aluminum with polyester painting, epoxy painting or 316 SST - CF8M (ASTM - A351) housing.
Complies with NEMA 4X/6P, IP66 or IP66W*, IP68 or IP68W*.
*The IP66/68W sealing test (immersion) was performed at 1 bar for 24 hours. For any other situation, please consult
Smar. IP66/68W tested for 200h to according NBR 8094 / ASTM B 117 standard.
Blank Flange:
When flange adapter and Drain/Vent material is carbon steel, blank flange is in carbon steel, otherwise
blank flange is in 316 SST - CF8M (ASTM - A351)
Level Flange (LD301L):
316 L SST, 304 SST, Hastelloy C276 and Plated Carbon Steel.
Fill Fluid:
Silicone, Inert , Krytox, Halocarbon 4.2 or Fomblim oils
Cover O-Rings:
Buna N
Mounting Bracket:
Plated carbon steel or 316 SST
Accessories (bolts, nuts, washers and U-clamps) in carbon steel or 316 SST
1/2
- 14 NPT)
1/2
- 14 NPT)
1/2
- 14 NPT)
Note: Explosion Proof approvals do not apply to
adapter, only to transmitter.
6.4
r
Physical Specifications
Flange Bolts and Nuts:
Plated carbon steel, Grade 8 or 316 SST
For NACE applications: carbon steel ASTM A193 B7M
Identification Plate:
316 SST
a) Flange mounted for Level models.
Mounting
b) Optional universal mounting bracket for surface or vertical/horizontal 2"- pipe (DN 50).
c) Manifold Valve integrated to the transmitter.
d) Directly on piping for closely coupled transmitter/orifice flange combinations.
Approximate
Weights
3.15 kg (7 lb): all models, except L models.
5.85 to 9.0 kg (13 lb to 20 lb): L models depending on the flanges, extension and materials.
Control Functions
Characteristics
Control Block (PID) and Totalizer (TOT)
(Optional)
Technical Characteristics of High Performance - CODE L1
High Performance option (code L1) is available under the following conditions only:
Application Differential and Gage
Range
Diaphragm
Material
Fill Fluid
D2
D3
D4
M2
M3
M4
316L SST or Hastelloy C276
Silicone
-50
-250
-2500
-50
-100
-100
to
to
to
to
to
to
50 kPa
250 kPa
2500 kPa
50 kPa
250 kPa
500 kPa
-200
-200
-36
-360
-14.5
-14.5
to
to
to
to
to
to
200 inH2O
36 psi
360 psi
200 inH2O
36 psi
360 psi
Performance Specifications
Reference
Conditions
Accuracy
Stability
Temperature
Effect
Static Pressure
Effect
NOTES
Hastelloy is a trademark of the Cabot Corp.
Monel is a trademark of International Nickel Co.
Viton and Teflon are trademarks of E. I. DuPont
de Nemours & Co.
Span starting at zero, temperature of 25 °C (77 °F), atmospheric pressure, power supply of 24 Vdc, silicone
oil fill fluid, isolating diaphragms in 316L SST and digital trim equal to lower and upper range values.
0.0085 URL ≤ span < 0.05 URL: ± [0.0021+0.004645URL/span]% of span
For range 2: ± 0.05% of URL for 6 months
For range 3: ± 0.075% of URL for 12 months
For range 4: ± 0.1% of URL for 24 months
± 0.2% of URL for 12 years, at 20 °C temperature change and up to 7 MPa (1000 psi) {70 bar} of static
pressure, environment free of hydrogen migration.
( 1 ) Meets NACE MR – 01 – 75/ISO 15156 recommendations.
( 2 ) Not available for absolute models nor vacuum applications.
( 3 ) Not available for range 0 and 1.
( 4 ) Not recommended for vacuum service.
( 5 ) Maximum pressure 24 bar (350 psi).
( 6 ) Options not certified for hazardous locations.
( 7 ) Drain/Vent not applicable.
( 8 ) For remote seal only 316 SST – CF8M (ASTM A351) flange is
available (thread 7/16 UNF).
( 9 ) Silicone Oil is not recommended for oxygen (O2) or Chlorine service.
(10) Only available for differential pressure transmitters.
LD301
LD301 - D21I - BU10 012
DIFFERENTIAL, FLOW, GAGE, ABSOLUTE AND HING STATIC PRESSURE TRANSMITTER (CONTINUATION)
Flanges Bolts and Nuts Material
COD.
A0
Plated Carbon Steel (Default) (6)
A1
316 SST
A2
Carbon Steel (ASTM A193 B7M) (1) (6)
Flange thread for fixing accessories (adapters, manifolds, mounting brackets, etc)
COD.
D0
7/16” UNF (Default)
D1
M10 X 1.5
Output Signal
COD.
G0
4 – 20 mA (Default)
G1
0 – 20 mA (4 wires) (2)
G3
NAMUR NE extended 4-20 mA (Burnout 3,55 to 22,8 mA)
Housing Material (8) (9)
COD.
H0
Aluminum (Default) (IP/TYPE)
H1
316 SST – CF8M (ASTM – A351) IP/TYPE)
H2
Aluminium for saline atmosphere (IPW/TYPEX) (7)
Tag Plate
COD.
J0
With tag, when specified (Default)
J1
Blank
J2
According to user’s notes
COD.
M0
M1
A0 D0 G0 H0 J0 M0 Y0 Y4 I6 P0
(11) O’Ring should be Viton or Kalrez.
(12) Not available for range 0.
(13) Only available for pressure transmitters D4 or H4 and 7/16 UNF or M10 x 1.5 flange thread
for fixing accessories.
(14) Only available for flange with PVDF (Kynar) insert.
(15) Inert Fluid: Safe for oxygen service.
(16) Not applicable for saline atmosphere.
(17)
Certificate for use in Hazardous Locations (CEPEL, NEPSI, NEMKO, EXAM, FM, CSA). Certificate for use in Hazardous Locations (CEPEL, CSA).
(18)
(19)
Certificate for use in Hazardous Locations (CEPEL, NEPSI, NEMKO, EXAM).
A5 Hastelloy C276
D2 M12 X 1.75
PID Configuration
With PID (Default)
Without PID
LCD1 Indication
COD.
Y0
LCD1: Percentage (Default)
LCD1: Current – I (mA)
Y1
LCD1: Pressure (Engineering Unit)
Y2
LCD2 Indication
COD.
Y0
LCD2: Percentage (Default)
Y4
LCD2: Current – I (mA)
Y5
LCD2: Pressure (Engineering Unit)
COD.
I1
I2
I3
I4
I5
I6
Identification Plate
FM: XP, IS, NI, DI
NEMKO: Ex-d, Ex-ia
CSA: XP, IS, NI, DI
EXAM (DMT): Ex-ia
CEPEL: Ex-d, Ex-ia
Without Certification
Painting
COD.
P0
Gray Munsell N 6.5 Polyester
P3
Black Polyester
P4
White Epoxy
P5
Yellow Polyester
TYPICAL MODEL NUMBER
H3
H4
Optional Items
*
Leave blank for no optional items
Burn-out
Special Applications C1 – Degrease Cleaning (Oxygen or Chlorine Service) (5).
High Performance L1 – 0.04% accuracy (3).
Square Root Extraction M3 – With Square Root extraction.
Special Features ZZ – User’s specification.
BD – Down Scale (Accordance to NAMUR NE43 specification).
BU – Up Scale (Accordance to NAMUR NE43 specification).
LD301 – Operation and Maintenance Instruction Manual
A
A
Notes
(1) Meets NACE MR – 01 – 75/ISO 15156 recommendations.
(2) Without explosion proof or intrinsic safety approvals.
(3) Only available for differential and gage pressure models.
(4) Values limited to 4 1/2 digits, unit limited to 5 characters.
(5) Degrease cleaning not available for carbon steel flanges.
(6) Not applicable for saline atmosphere.
(7) IP66/68W tested for 200 hours according to NBR 8094 / ASTM B 117 standard.
(8) IPX8 tested in 10 meters of water column for 24 hours.
(9) Ingress Protection:
Product CEPEL NEMKO/EXAM FM CSA NEPSI
LD300 IP66/68W IP66/68W Type4X/6(6P) Type4X IP67
MODEL FLANGED PRESSURE TRANSMITTER
Range Limits
COD.
Min. Max. Min. Max.
L2
-50
L3
-250
L4
-2500
L5
-25000
Diaphragm material and Fill Fluid (Low Side)
COD.
1
316L SST
2
316L SST
Hastelloy C276
3
Hastelloy C276
4
Monel 400
5
COD.
Min.
Unit
Span
50
1.25
250
2500
25000
Flange, Adapter and Drain/Vent Valves material (Low Side)
U0 - With one Flush Connection ¼” NPT (if supplied with gasket)
U1- With two Flush Connections ¼” NPT per 180 ºC
U2 - With two Flush Connections ¼” NPT per 90 ºC
U3 - With two Flush Connections ½” NPT - 14 NPT per 180 ºC (with cover)
U4 - Without Gasket Connection
6.9
LD301 – Operation and Maintenance Instruction Manual
NOTES
( 1 ) Meets NACE MR – 01 – 75/ISO 15156 recommendations.
( 2 ) Silicone Oils not recommendations for Oxygen (O
( 3 ) Not applicable for vacuum service.
) or Chlorine service.
2
( 4 ) Drain/Vent not applicable.
( 5 ) O’Ring should be Viton or Kalrez.
( 6 ) Maximum pressure 24 bar.
( 7 ) For remote Seal only 316 SST - CF8M (ASTM A3510 flange is available
(threadM12).
( 8 ) Fluorolube fill fluid is not available for Monel diaphragm.
( 9 ) Options not certified for hazardous locations.
(10) Attention, check corrosion rate for the process, tantalum plate 0.1 mm,
AISI 316L extension 3 to 6mm.
(11) Item by inquiry.
(12) Supplied without Gasket.
(13) Without certification for Explosion proof certification or Intrinsically safe.
(14) Limited values to 4 1/2 digits; limited unit to 5 characters.
(15) Degreaser’s cleaning is not available for carbon steel flanges
(16) The insulator kit is applicable with Raised Face (HO) and Smooth Face
(H1) with Gasket material.
T(Teflon) and only for the following models:
- For models with extension the Gasket T (Teflon) it has special share.
(17) Gasket for housing, available only in Stainless 316.
(18) Finishing flange faces:
ANSI B 16.5 / MSS-SP6:
- Raised or Smoth Face with grooved lining: 3.2 to 6.3 µm Ra (125 a
250 µ” AA);
Small or Large Tongue Face and Small or Large Groove with smooth
finishing
not exceeding: 3.2 µm Rt (125 µ” AA);
- Grooved finishing “B1” (PN 10 a PN40): 3.2 a 12.5 µm Ra (125 a
500 µ” AA);
Smooth finishing “B2” (PN 63 a PN100), “C” (Tongue) e “D” (Groove):
0.8 a 3.2 µm Ra (32 a 125 µ” AA).
DIN 2501 (DIN 2526):
- Smooth finishing “E” (PN 160 a PN250): Rz = 16 (3.2 µm Ra (125 µ” AA).
Standard JIS B2201
Grooved finishing 3.2 a 6.3 µm Ra (125 a 250 µ” AA).
(19) Range of application of temperature from -40 ºC to 150 ºC.
(20) Applicable only to:
- Thickness of steel: 0.05 mm
- Diameter/capillary length:
2” ANSI B 16.5 DN 50 DIN, JIS 50 A, for seals up to 3 meters of capillary and level
models (by inquiry).
3” ANSI B 16.5 DN 80 DIN, JIS 80 A, for seals up to 5 meters of capillary and level
models.
- Faces: RF and FF;
- Temperature Range: +10 ºC to 100 ºC
+ 101 to 150 º C (by inquiry)
- Not applicable for diaphragm thickness;
- Not applicable for use with gaskets.
(21) Inert Fluid: Oxygen Compatibility, safe for oxygen service.
(22) Not applicable for saline atmosphere.
(23) IP66/68W tested for 200 hours according to NBR 8094 / ASTM B 117 standard.
(24) Certificate for use in Hazardous Locations (CEPEL, CSA).
(25) Not available for slip-on flange.
(26) Diaphragms of Titanium and Monel available only in 0.1 mm, and diaphragms of Tantalum
only in 0.075 mm.
(27) Certificate for use in Hazardous Locations (CEPEL, NEPSI, NEMKO, EXAM, FM, CSA).
(28) Certificate for use in Hazardous Locations (CEPEL, NEPSI, NEMKO, EXAM).
(29) IPX8 tested in 10 meters of water column for 24 hours.
(30) Ingress Protection:
* Leave it blank when there are not optional items.
Burn-out
Special Procedures
Special Features ZZ - User’s Specification
Diaphragm Thickness N0 – Default N1 - 0.1mm (12)
Note
(1) Meets NACE MR-01-75/ISO 15156 recommendations.
(2) Silicone oil not recommended for Oxygen (O2) or Chlorine
Service.
(3) Not applicable for vacuum service.
(4) Drain not applicable.
(5) O-Ring material must be of Viton or Kalrez.
(6) Maximum pressure 24 bar.
(7) For remote seal is only available flange in 316 Stainless Steel -
CF8M (ASTM A351) (thread M12).
(8) HP – High Pressure.
(9) Options not certified for hazardous locations.
(10) Not available for Tri-clamp.
(11) Compliant with 3A-7403 standard for food and other
applications where sanitary connections are required:
- Neobee M2O Fill Fluid
- Finishing wet Face: 0,8 µm Ra (32 µ" AA)
- Wet O-Ring: Viton, Buna-N and Teflon
(12) Item by inquiry.
BD - Down Scale (Accordance to NAMUR NE43 specification)
BU - Up Scale (Accordance to NAMUR NE43 specification)
C1 - Degrease Cleaning (Oxygen or Chlorine Service) (15)
C2 - For Vacuum Application
C4 - Polishing of the wet parts according to 3A Certification (11) (12)
(13) Without certification for explosion proof or intrinsically safe.
(14) Limited values to 4 1/2 digits; limited unit to 5 characters.
(15) Degrease cleaning is not available for Carbon Steel Flanges.
(16) Temperature application range: -40 to 140 °C and Tables 5 and 6 – pages 6.17 and 6.18.
(17) Not applicable for saline atmosphere.
(18) IP66/68W was tested for 200 hours according to NBR 8094 / ASTM B 117 standard.
(19) The inert fluid guarantees safety for Oxygen (O
(20) Certificate for use in Hazardous Locations (CEPEL, NEPSI, NEMKO, EXAM, FM, CSA).
(21) Certificate for use in Hazardous Locations (CEPEL, CSA).
(22) Certificate for use in Hazardous Locations (CEPEL, NEPSI, NEMKO, EXAM).
(23) IPX8 tested in 10 meters of water column for 24 hours.
(24) Ingress Protection:
Product CEPEL NEMKO/EXAM FM CSA NEPSI
LD300 IP66/68W IP66/68W Type4X/6(6P) Type4X IP67
G3 NAMUR NE43 extended 4-20 mA (Burnout 3.55 and 22.8 mA)
This product is in compliance with the directive and it was designed and manufactured in
accordance with sound engineering practice using several standards from ANSI, ASTM, DIN
and JIS.
EMC Directive (2004/108/EC) - Eletromagnetic Compatibility
The EMC test was performed according to IEC standard: IEC61326-1:2006, IEC61326-23:2006, IEC61000-6-4:2006, IEC61000-6-2:2005. For use in environment only.
Keep the shield insulated at the instrument side, connecting the other one to the ground if
necessary to use shielded cable.
ATEX Directive (94/9/EC) – Equipment and protective systems intended for use in
potentially explosive atmospheres.
This product was certified according European Standards at NEMKO and EXAM (old DMT). The
certified body for manufacturing quality assessment is EXAM (number 0158).
LVD Directive 2006/95/EC – Electrical Equipment designed for use within certain voltage
limits
According the LVD directive Annex II the equipment under ATEX “Electrical equipment for use in
an explosive atmosphere” directive are excluded from scope from this directive.
The EC declarations of conformity for all applicable European directives for this product can be
found at
www.smar.com.
Sanitary Approval
Certifier Body: 3A Sanitary Standards
Model Designations: LD301 S-2” clamp; LD301 S-2” Thread IDF, RJT, SMS; SR301 A-2” Clamp;
SR301 A-2” Thread IDF, RJT, SMS; SR301 S-2” Clamp; SR301 S-3” Clamp. Sensors and
Sensor Fittings and Connections Used on Fluid Milk and Milk Products, Number: 74-03.
(Authorization No. 873).
The IP68 sealing test (immersion) was performed at 1 bar for 24 hours. For any other situation,
North American Certifications
FM Approvals
Certificate N: FM 0X3A8.AE
Explosion proof for Class I, Division 1, Groups A, B, C, and D;
Dust-ignition proof for Class II Division 1, Groups E, F, and G and Class III Division 1; Ambient
A.1
LD301 – Operation and Maintenance Instruction Manual
Certificate N: FM 3V1A6.AX
Intrinsically Safe for use in Class I, Division 1, Groups A, B, C, and D; Class II, Division 1,
Groups E, F, and G; Class III, Divisi o n 1;
Non-incendive for Class I, Division 2, Groups A, B, C, and D
Entity parameters: V
= 30 Vdc I
max
Maximum Ambient Temperature: 60 ºC.
Enclosure Type 4X/6 or Type 4/6.
Canadian Standards Association (CSA)
Certificate N: CSA1111005
Class 2258 02 Explosion Proof for Class I, Division 1, Groups B, C and D; Class II, Division 1,
Groups E, F and G; Class III, Division 1; Class I, Division 2, Groups A, B, C and D; Class II,
Division 2, Groups E, F and G; Class III, conduit seal not required.
Class 2258 03 Intrinsically Safe and Non-Incendive Systems for Class I, Division 1, Groups A, B,
C and D; Class II, Division 1, Groups E, F and G; Class III, Division 1
• Intrinsically safe when connected through CSA Certified Diode Safety Barrier, 28 Vmax, 300
ohms min, per Smar Installation Drawing 102A-0435.
Class 2258 04 Intrinsically Safe, Entity – For Hazardous Locations for Class I, Division 1,
Groups A, B, C and D; Class II, Division 1, Groups E, F and G; Class III, Division 1
• Intrinsically safe with entity parameters: Vmax = 28 V Imax = 110 mA Ci = 5 nF Li = 0 µH, when
connected through CSA Certified Safety Barriers as per Smar Installation Drawing 102A-0435.
Maximum Ambient Temperature: 40ºC.
Enclosure Type 4X or Type 4.
European Certifications
Certificate No: Nemko 03 ATEX 133X
ATEX Intrinsically Safe Group II 1GD, Ex ia IIC T4
• Entity Parameters: Pi = 0.7 W Ui = 28 V Ii = 100 mA Ci = 2 nF Li = Neg
Maximum Ambient Temperature: 62 ºC.
Certificate No: Nemko 02ATEX035
ATEX Flameproof Group II 2G, Ex d IIC T6
Enclosure type IP66/68 or IP66/68W.
Special conditions for safe use:
1. The transmitters are marked with three options for the indication of the protection
code. The certification is valid only when the protection code is indicated, by the
user, in one of the boxes following the code.
The following options apply:
Ex d IIC T6 ( ) with X ticked in the parenthesis:
The Ex d IIC T6 protection according to certificate Nemko 02ATEX035X/ 02ATEX149X applies for the specific transmitter. Certified Ex d IIC cables
entries must be used.
Ex ia IIC T4 ( ) with X ticked in the parenthesis:
The Ex ia IIC T4 protection according to certificate Nemko 03ATEX133X
applies for the specific transmitter. Certified diode safety barriers must be
used.
Ex d IIC T6 / Ex ia IIC T4 ( ) with X ticked in the parenthesis:
The transmitter has double protection. Both Ex d IIC T6 and Ex ia IIC T4
protection apply for the specific transmitter according to certificates
Nemko 02ATEX035X / 02ATEX149X and Nemko 03ATEX133X. In this
case the transmitter must be fitted with appropriate certified cable entries
Ex d IIC and the electric circuit supplied by a certified diode safety barrier
as specified for the protection Ex ia IIC T4.
2. For enclosures of the transmitters made of aluminum impact and friction hazards
shall be considered when the transmitter is used in category II 1 G according to EN
50284 clause 4.3.1
3. The diode safety barrier must have a linear resistive output characteristic.
4. The pressure of the potentially explosive atmosphere surrounding the transmitter
must be within the range 0.8 mbar to 1.1 mbar.
A.2
= 110 mA Ci= 8nF Li= 0.24 mH
max
Certificate No: DMT 00 ATEX E 009
ATEX Intrinsically Safe
Group II 1/2 G, Ex ia, IIC T4/T5/T6
• Entity Parameters: Ui = 28 Vdc Ii = 93 mA Ci ≤ 5 nF Li = neg
South America Certification
INMETRO approvals
Certificate No: CEPEL-Ex-049/95
Intrinsically safe - Ex-ia IIC T5
• Entity Parameters: Ui = 30 Vdc Ii = 100 mA Ci =6,4nF Li = neg Pi=0,7 W
Ambient Temperature: (-20ºC < T
Enclosure IP66/67 ou IP66/68W.
amb
Certificate No: CEPEL-Ex-039/96
Flameproof - Ex-d IIC T6
Ambient Temperature: (-20ºC < T
amb
Enclosure IP66/67 ou IP66/68W.
Asia Certification
Certificate No: Nepsi GYJ05602
Intrinsically safe - Ex ia, IIC
Temperature Class:
• T4 (-40ºC< T
• T5 (-40ºC< T
• T6 (-40ºC< T
• Entity Parameters: Ui = 28 Vdc Ii = 93 mA Ci ≤ 5 nF Li = neg
<+85ºC @ Pi=700 mW)
amb
<+50ºC @ Pi=700 mW)
amb
<+40ºC @ Pi=575 mW)
amb
Certificate No: Nepsi GYJ05601
Explosion proof - Ex d IIC T6
Ambient Temperature: (-20ºC < T <+40ºC).
Identification Plate and Control Drawing
Identification Plate
• Identification of Intrinsically safe and Explosion Proof for gas and stea m:
FM
Appendix A
<+50ºC).
<+40ºC).
A.3
LD301 – Operation and Maintenance Instruction Manual
NEMKO and DMT
CEPEL
NEPSI
A.4
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