SMAR LD302 Operation, Maintenance & Instruction Manual
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SMAR LD302 Operation, Maintenance & Instruction Manual

Fieldbus pressure
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Summary of Contents for SMAR LD302

  • Page 1 L D 3 0 2 M E...
  • Page 2 Specifications and information are subject to change without notice. For the latest updates, please visit the SMAR website above. BRAZIL CHINA FRANCE Smar Equipamentos Ind. Ltda. Smar China Corp. Smar France S. A. R. L. Rua Dr. Antonio Furlan Jr., 1028 3 Baishiqiao Road, Suite 30233 42, rue du Pavé...
  • Page 3 The LD302 is available as a product of its own, but also replaces the circuit board for the LD301. They both use the same sensor board. Refer to the maintenance section of this manual for instructions on upgrading.
  • Page 4 LD302 - Operation and Maintenance Instruction Manual NOTE This Manual is compatible with version 3.XX, where 3 denotes software version and XX software release. The indication 3.XX means that this manual is compatible with any release of software version 3.

  • Page 5: Table Of Contents

    CONFIGURATION ........................3.1 TRANSDUCER BLOCK ............................... 3.1 HOW TO CONFIGURE A TRANSDUCER BLOCK ..................... 3.1 LOWER AND UPPER TRIM ............................3.2 PRESSURE TRIM – LD302 ............................3.3 THROUGH LOCAL ADJUSTMENT ..........................3.5 CHARACTERIZATION TRIM ............................3.5 SENSOR INFORMATION ............................3.7 TEMPERATURE TRIM ..............................
  • Page 6 LD302 - Operation and Maintenance Instruction Manual...

  • Page 7: Installation

    General The LD302 has a built-in temperature sensor to compensate for temperature variations. At the factory, each transmitter is submitted to a temperature cycle process, and the characteristics under different pressures and temperatures are recorded in the transmitter memory. In the field, this feature minimizes the temperature variation effect.
  • Page 8 LD302 - Operation and Maintenance Instruction Manual 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). Do not allow steam in the measuring chamber.
  • Page 9 152,4 24,4 19,1 209,5 168,1 22,2 3" 209,5 168,1 38,7 22,2 228,6 190,5 24,4 19,1 4" 32,2 22,3 215,9 25,4 DIN2501/2526 FORMA D DIMENSIONS # HOLES 10/40 10/40 10/16 25/40 Figure 1.1 - Dimensional Drawing and Mounting Position for LD302...
  • Page 10 PANEL MOUNTING (See section 5 - spare parts list for mounting backets available) Figure 1.2 - Dimensional Drawing and Mounting Position for LD302 Figure 1.3 - Position of the Transmitter and Taps NOTE Except for dry gases, all impulse lines should slope at the ratio 1:10, in order to avoid trapping bubbles in the case of liquids, or condensation from steam or gases.

  • Page 11: Housing Rotation

    Installation Housing Rotation The housing can be rotated in order to get the digital display in better position. To rotate it, release the Housing Rotation Set Screw. (See Figure 4.3 - For Possible Positions of the Display) WARNING EXPLOSION PROOF INSTALLATIONS The electronic housing and the sensor assembly in potentially explosive atmospheres must have a minimum of 6 threads fully engaged.
  • Page 12 LD302 - Operation and Maintenance Instruction Manual NOTE Please refer to the General Installation, Operation and Maintenance Manual for more details. The Figure 1.6 - Conduit Installation Diagram, shows the correct installation of the conduit, in order to avoid penetration of water, or other substance, which may cause malfunctioning of the equipment.

  • Page 13: Bus And Tree Topology And Network Configuration

    Many types of Fieldbus devices may be connected on the same bus. The LD302 is powered via the bus. The limit for such devices is 16 for one bus for non-intrinsically safe requirement. In hazardous area, the number of devices may be limited by intrinsically safe restrictions.
  • Page 14 LD302 - Operation and Maintenance Instruction Manual Figure 1.8 - Bus Topology Figure 1.9 -Tree Topology LD2EM 106.CDR...

  • Page 15: Operation

    Section 2 Operation The LD302 Series Pressure Transmitters use capacitive sensors (capacitive cells) as pressure sensing elements, as shown in Figure 2.1 - Capacitive Cell. This is the same sensor that is used in the LD301 series, the sensor modules are therefore interchangeable.

  • Page 16: Functional Description - Eletronics

    Functional Description – Electronics Refer to the block diagram Figure 2.2 - LD302 Block Diagram Hardware. The function of each block is described below. Figure 2.2 - LD302 Block Diagram Hardware Oscillator This oscillator generates a frequency as a function of sensor capacitance.

  • Page 17: The Display

    Operation Fieldbus Modem Monitors line activity, modulates and demodulates communication signals, inserts and deletes start and end delimiters, and checks integrity of frame received. Power Supply Takes power from the loop-line to power the transmitter circuitry. Power Isolation Isolates the signals from the input section, the power to the input section must be isolated. Display Controller Receives data from the CPU, identifying which segments on the liquid crystal Display to turn on.
  • Page 18 LD302 - Operation and Maintenance Instruction Manual...

  • Page 19: Configuration

    One of the many advantages of Fieldbus is that device configuration does not depend on the configurator since the technology works with device descriptions and the interoperability concepts. The LD302 may be configured from a third party terminal or an operator console. A particular configurator is therefore not addressed here.

  • Page 20: Lower And Upper Trim

    There are two types of trim available: Lower Trim: It is used to trim the reading at the lower range. The operator informs the LD302 of the correct reading for the applied pressure. The most common discrepancy is the lower reading.

  • Page 21: Pressure Trim - Ld302

    After the selection this key should be pressed to complete the operation Figure 3.2 - LD302 SYSCON - Transducer Configuration Screen The following engineering unit's codes are defined for pressure according to Fieldbus Foundation standard: UNIT CODES 1148 InH2O...
  • Page 22 Figure 3.3 - LD302 SYSCON - Transducer Configuration Screen Let’s take the upper value as an example: Apply the input to the upper value of 5,000mmH2O of pressure and wait for the readout of the parameter PRIMARY_VALUE to stabilize.

  • Page 23: Through Local Adjustment

    Configuration WARNING It is recommended that a convenient engineering unit be chosen through the XD_SCALE parameter of the Analog Input Block, considering that the range limits of the sensor must be respected. (100% and 0%). It is also recommended for every new calibration, to save existing trim data in parameters CAL_POINT_LO_BACKUP and CAL_POINT_HI_BACKUP, by means of parameter BACKUP_RESTORE, using option LAST_TRIM_BACKUP.
  • Page 24 Note that CURVE_X indicates the applied pressure according to the standard pressure source. CURVEX_Y indicates measured pressure value to LD302. The number of points is configured in the parameter CURVE_LENGTH, being in the maximum of 5 points.

  • Page 25: Sensor Information

    Configuration By the list box the user This parameter can enable or disable activates or the Characterization deactivates the Curve, enter the points, Characterization restore or backup the Curve after the curve entered. This points have been parameter should be configured.

  • Page 26: Temperature Trim

    Sensor Data Reading When the transmitter LD302 is on, it is verified that the serial number of the sensor in the sensor board is the same as the recorded serial number in the E2PROM in the main board. When these numbers are different (a swap of sensor set or main board was carried through) the data stored in the E2PROM of the sensor board is copied to the E2PROM of the main board.

  • Page 27: Transducer Display - Configuration

    Configuration By selecting the This parameter is options contained in used to save or the list box, restore the default operations of factory or user backup and restore configuration data in the sensor stored at the module can be sensor module. selected.

  • Page 28: Definition Of Parameters And Values

    "Programming Using Local Adjustment". The resources on this transducer display as well as all of the Series 302 Field Devices from Smar, have the same methodology. Once trained, the user can handle any kind of field devices from Smar. All function block and transducers defined according to Foundation Fieldbus have a description of their features written on binary files, by the Device Description Language.
  • Page 29 Configuration Access The access allows the user to read, in the case of the “Monitoring” option, and to write when "action" option is selected, and then the display will show the increment and decrement arrows. Alpha_Num These parameters include two options: VALUE and mnemonic. In VALUE option, it is possible to display data, both in the alphanumeric and in the numeric fields;...
  • Page 30 LD302 – Operation and Maintenance Instruction Manual Figure 3.13 - Parameters for Local Adjustment Configuration Figure 3.14 - Parameters for Local Adjustment Configuration 3.12...

  • Page 31: Programing Using Local Adjustment

    Configuration This parameter The option "update updates the local display" should be adjustment selected in order to programming tree execute the upgrade of configured on each local adjustment programming tree. device. After this step, all the parameters selected will be shown on the LCD display.

  • Page 32: J1 Jumper Connections

    Magnetic Tool Span Hole Zero Hole Fig. 3.16 - Local Adjustment Holes Table 3.4 shows the actions on the Z and S holes on the LD302 when Local Adjustment is enabled. HOLE ACTION Initializes and rotates through the available functions.
  • Page 33 S and wait magnetic tool in orifice Z and wait until letters MD for 5 seconds. are displayed. Figure 3.18 - Step 1 - LD302 Insert the Remove the magnetic tool in magnetic tool orifice S and from orifice S.
  • Page 34 LD302 – Operation and Maintenance Instruction Manual In order to calibrate the In order to decrement lower value(LOWER), the lower value, place insert the magnetic tool the magnetic tool in in orifice S as soon as orifice Z to shift the...

  • Page 35: Maintenance Procedures

    Check if the shield is not being used as a conductor. It should be grounded at one end only. * Power Supply Check power supply output. The voltage must be between 9 - 32 VDC at the LD302 terminals. Noise and ripple should be within the following limits: NO COMMUNICATION a) 16 mV peak to peak from 7.8 to 39 KHz.

  • Page 36: Disassembly Procedure

    LD302 - Operation and Maintenance Instruction Manual If the problem is not stated in the table above, follow the Note below: NOTE The Factory Init should be tried as a last option to recover the equipment control when the equipment presents some problem related to the function blocks or the communication.

  • Page 37: Electronic Circuit

    Maintenance Procedures After this, the transmitter may be removed from the standpipe. The flange bolts (16) may now be loosened crosswise, one at a time. After removing bolts and flanges (15), the isolating diaphragms will be easily accessible for cleaning. Cleaning should be done carefully in order to avoid damaging the delicate isolating diaphragms.
  • Page 38 LD302 - Operation and Maintenance Instruction Manual Gaskets should be lightly lubricated with silicone oil before they are fitted into their recesses. Use halogen grease for inert fill applications. The flanges should then be positioned in order to press them in place. With the flanges holding the O-Rings in place, insert the four bolts (16) and tighten the nuts (23) finger tight, making sure the flanges remain parallel all the time.

  • Page 39: Electronic Circuit

    Electronic Circuit Plug sensor connector and power supply connector to main board. Attach the display to the main board. Observe the four possible mounting positions. The SMAR mark indicates the up position. Figure 4.3 - Four Possible Positions of the Display Anchor the main board and display with their screws (3).

  • Page 40: Upgrading Ld301 To Ld302

    The sensor and housing of the LD301 is exactly the same as the LD302. By changing the circuit board of the LD301 it becomes a LD302. The display on the LD301 version 5.XX, is the same as on LD302 and can therefore be used with the LD302 upgrade circuit board. With an LD301 version three or earlier, that display cannot be used.
  • Page 41 Maintenance Procedures Figure 4.4 - Exploded View...
  • Page 42 LD302 - Operation and Maintenance Instruction Manual SPARE PARTS LIST DESCRIPTION OF PARTS POSITION CODE HOUSING, Aluminum (NOTE 2) ½ - 14 NPT 304-0130 M20 x 1.5 304-0131 PG 13.5 DIN 304-0132 HOUSING, 316 SS (NOTE 2) ½ - 14 NPT 304-0133 M20 x 1.5...
  • Page 43 Maintenance Procedures SPARE PARTS LIST DESCRIPTION OF PARTS POSITION CODE Neck, Buna-N 204-0113 O’RINGS (NOTE 3) Flange, BUNA-N 203-0401 Flange, VITON 203-0402 Flange, TEFLON 203-0403 Flange, ETHYLENE/PROPYLENE 203-0404 Flange, TEFLON with spring LOADED 203-0405 Adapter, BUNA-N 203-0701 Adapter, VITON 203-0702 Adapter, TEFLON 203-0703 Adapter, ETHYLENE/PROPYLENE...
  • Page 44 LD302 - Operation and Maintenance Instruction Manual NOTE For category A, it is recommended to keep, in stock, 25 parts installed for each set, and for category B, 50. Includes Terminal Block, Bolts, caps and Identification plate without certification. O-Rings and Backup Rings are packaged in packs of 12 units.
  • Page 45 Maintenance Procedures 204-0301 SPARE PART NUMBER FOR LEVEL SENSORS CODE Range Level 1.25 Level 6.25 1000 Level 62.5 2500 CODE Diaphragm Material and Fill Fluid (Low Side) 316L SST Silicone Oil 316L SST Fluorolube Oil Hastelloy C276 Silicone Oil (1) Hastelloy C276 Fluorolube Oil (1) Monel 400...
  • Page 46 LD302 - Operation and Maintenance Instruction Manual 4.12...

  • Page 47: Technical Characteristics

    Section 5 Technical Characteristics Functional Specifications Process Fluid Liquid, gas or vapor. Output Signal Digital only. Fieldbus, 31.25 kbit/s voltage mode with bus power. Power Supply Bus power 9 - 32 VDC. Quiescent Current consumption: 12 mA. Output impedance: non-intrinsic safety from 7.8 kHz - 39 kHz should be greater or equal to 3 kOhm. Intrinsic safety output impedance: (assuming an IS barrier in the power supply) from 7.8 kHz - 39 kHz should be greater than or equal to 400 Ohm.

  • Page 48: Performance Specifications

    LD302 - Operation and Maintenance Instruction Manual Performance Specifications Reference conditions: range starting at zero, temperature 25 C (77 F), atmospheric pressure, power supply of 24 Vdc, silicone oil fill fluid, isolating diaphragms in 316L SS and digital trim equal to lower and upper range values.
  • Page 49 Plated carbon steel, 316 SST, Hastelloy C276 or Monel 400. Wetted O-Rings (For Flanges and Adapters) Buna N, Viton™ or PTFE. Ethylene-Propylene on request. The LD302 is available in materials according to NACE MR-01-75. Non-wet Parts Electronic Housing Injected aluminum with polyester painting or 316 SST (NEMA 4X, IP67).
  • Page 50 LD302 - Operation and Maintenance Instruction Manual MODEL DIFFERENTIAL, GAGE, ABSOLUTE AND HIGH STATIC PRESSURE TRANSMITTERS LD302 CODE Type and Range (1) Differential 0.125 Differential 1.25 Differential 6.25 1000 Differential 62.5 2500 Gage 0.25 Gage 1.25 Gage 6.25 1000 Gage 62.5...
  • Page 51 Technical Characteristics MODEL LEVEL TRANSMITTERS LD302 CODE Range Level 1.25 50 kPa 200 inH Level 6.25 250 kPa 1000 inH Level 62.5 2500 kPa 360 psi CODE Diaphragm Material and Fill Fluid (Low Side) 316L SST Silicone Oil 316L SST...
  • Page 52 LD302 - Operation and Maintenance Instruction Manual...

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