LAUREL LAUREATE 2 Series Owner's Manual
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LAUREL LAUREATE 2 Series Owner's Manual

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LAUREATE SERIES 2
DIGITAL PANEL METER OWNERS MANUAL
Now with Ethernet
LAUREL Electronics Inc.
3183-G Airway Ave, Costa Mesa, CA, 92626, USA
Tel: (714) 434-6131 • Fax: (714) 434-3766 • Website:
www.laurels.com
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  • Page 1 LAUREATE SERIES 2 DIGITAL PANEL METER OWNERS MANUAL Now with Ethernet LAUREL Electronics Inc. 3183-G Airway Ave, Costa Mesa, CA, 92626, USA Tel: (714) 434-6131 • Fax: (714) 434-3766 • Website: www.laurels.com - 1 -...

  • Page 2: Ordering Guide

    1. ORDERING GUIDE Configure a model number in this format: L20201DCV1, CBL01 L…Digital panel meter with DC Amperes RMS Volts screw terminal connectors. DCA1 ....2.0000 mA RMV1 ....200.00 mV DCA2 ....20.000 mA RMV2 ....... 2.0000 V Display Color DCA3 ....

  • Page 3: Table Of Contents

    2. TABLE OF CONTENTS Ordering Guide ......................2 Table of Contents ......................3 Product Introduction ..................... 4 Receiving & Unpacking ....................5 Safety Considerations ....................5 Connector Wiring Information ..................6 Mechanical Assembly ....................8 Front Panel Setup Keys ....................10 Enabling &...

  • Page 4: Product Introduction

    USB, RS232 or RS485 communications are available with the Modbus RTU protocol or Laurel’s simpler Custom ASCII protocol. RS485 operation allows up to 32 meters to be daisy- chained over long distances with no need for a hub. A USB-to-RS485 gateway board allows up to 32 meters to be interfaced to a PC via a single USB cable.

  • Page 5: Receiving & Unpacking

    4. RECEIVING & UNPACKING Your meter was carefully tested and inspected prior to shipment. Should the meter be damaged in shipment, notify the freight carrier immediately. In the event the meter is not configured as ordered or the unit is inoperable, return it to the place of purchase for repair or replacement. Please include a detailed description of the problem.

  • Page 6: Connector Wiring Information

    6. CONNECTOR WIRING INFORMATION CONNECTORS Connectors for signal and power are UL-rated screw-clamp terminal blocks that plug into mating jacks on the printed circuit board. Communication connectors are a single RJ11 plug for RS232, dual RJ11 plugs for RS485, dual RJ45 plugs for RS485 Modbus, or USB. Note: The functions of control inputs 1 &...
  • Page 7 P3 - SERIAL COMMUNICATIONS P4 - ANALOG OUTPUT - 7 -...

  • Page 8: Mechanical Assembly

    7. MECHANICAL ASSEMBLY REMOVING THE REAR PANEL First remove any connectors. Use one hand to press in the two sides of the rear of the case, and the other hand to press down the two protruding tab releases at the top of the rear panel (see figure below).
  • Page 9 boards are properly aligned with the molded board retaining pins on the inside of the rear panel. Once the rear panel is in place, reinstall the input/output screw clamp terminal plugs. PANEL MOUNTING Slide the meter into the 45 x 92 mm 1/8 DIN panel cutout. Ensure that the provided gasket is in place between the front of the panel and the back of the meter bezel.

  • Page 10: Front Panel Setup Keys

    8. FRONT PANEL SETUP KEYS Meter Front Panel There are four front panel keys, which change function for the Run Mode and Menu Mode, effectively becoming eight keys. The keys are labeled with alphanumeric captions (MENU, PEAK, RESET, ALARMS) for the Run Mode and with symbols ( right arrow, right triangle, up triangle,...
  • Page 11 ALARMS Key. Pressing ALARMS once displays the setpoint for Alarm 1. Pressing it again displays the setpoint for Alarm 2. Pressing it again returns to the present value. KEYS IN MENU MODE Right Arrow Key (MENU). Pressing steps the meter through all menu items that have been enabled and then back to the Run Mode.

  • Page 12: Enabling & Locking Out Menu Items

    9 and locate jumper “a” in the lower portion of the power supply board next to the input connectors (see figure at right). Check lockout status. Many Laurel meters are shipped with lockouts in place. This causes menu items described later in this manual not to appear.

  • Page 13: Meter Scaling Theory

    10. METER SCALING THEORY User scalability is a standard feature of all of our analog input meters, with the exception of thermocouple and RTD meters. It allows electrical signals to be converted to readings in engineering units. These readings can have up to 5 digits, a user specified decimal point, and a user specified polarity.

  • Page 14: Dc Volts, Amps, Process, Strain Input

    11. DC VOLTS, AMPS, PROCESS, DC RATIO The DC Volts, Amps, Process and Strain meters utilize the DC signal conditioner board, which needs to be configured via jumpers for the desired voltage or current range. All signal ranges are factory calibrated with calibration factors stored in EEPROM on the signal conditioner board. The meter software recognizes the board and will bring up the appropriate menu items for it;...
  • Page 15 KEYSTROKES FOR SETUP key does not work, see Section 9 “Enabling & Locking Out Menu Items.” If the MENU Press Menu Press Digit Press Value Select Select Key Select Key _InPut _dC U __0.2U __2.0U _20.0U 200.0U 600.0U Selection of signal DC Volts 0.2, 2, 20, 200, 600V FS input type &...
  • Page 16 Press Menu Press Digit Press Value Select Select Key Select Key ConFG 000_0 Not rate of change Meter Operation as a rate of Rate x 0.1 Rate x 1 Configuration change meter. Rate x 10 Rate x 100 Extended meter only. Rate x 1000 Rate x 10000 Peak Display.
  • Page 17 Press Menu Press Digit Press Value Select Select Key Select Key Scaling method “Scale and Offset” as selected under SEtuP SCALE 0.0000 0.0000 0.0000 Select thru for first flashing digit, thru Scale factor with for flashing other digits. Then press 0.0000 0.0000 0.0000 decimal point to move flashing decimal point.
  • Page 18 This scaling method applies a straight line fit between two points, which are based on actual transducer signals. A low input signal, such as the signal with zero weight, and a high input signal, such as the signal with a known weight, are applied to the meter. The corresponding desired low and high readings are then entered from the front panel.

  • Page 19: Load Cell & Microvolt Input

    12. LOAD CELL & MICROVOLT INPUT Load Cell, Strain Gauge and Microvolt meters utilize the load cell signal conditioner board, which offers sensitivity to ±20 mV full scale and 4 or 6-wire load cell connection. This board needs to be configured via jumpers for the desired voltage range. All signal ranges are factory calibrated with calibration factors stored in EEPROM.
  • Page 20 KEYSTROKES FOR SETUP key does not work, see Section 9 “Enabling & Locking Out Menu Items.” If the MENU Press Menu Press Digit Press Value Select Select Key Select Key _InPut _Strn _20.0____50.0_ _100.0 _250.0 _500.0 Selection of signal Strain or ratiometric 20, 50, 100, 250, 500 mV FS voltage input type &...
  • Page 21 Press Menu Press Digit Press Value Select Select Key Select Key ConFG 000_0 Not rate of change Meter Operation as a rate of Rate x 0.1 Configuration change meter. Rate x 1 Extended meter only. Rate x 10 Rate x 100 Rate x 1000 Rate x 10000 Peak Display.
  • Page 22 Press Menu Press Digit Press Value Select Select Key Select Key Scaling method “Scale and Offset” if selected under SEtuP SCALE 0.0000 0.0000 0.0000 Select thru for first flashing digit, thru Scale factor for flashing other digits. Then press 0.0000 0.0000 0.0000 to move flashing decimal point.
  • Page 23 Option board dependent menu items ALSEt. ALS34 dEU1H dEU2H dEU1b dEU2b dEU3H DEU4H DEU3b DEU4b Menu items related to alarm setup These will only appear if a relay board is detected. If so, see Section 16. AnSEt. Hi.. Menu items related to analog output setup.

  • Page 24: Ac Rms Volts & Amps Input

    13. AC TRUE RMS VOLTS & AMPS INPUT AC voltage or current measurement utilizes the True RMS signal conditioner board which uses precision circuitry to compute the root- mean-square of complex waveforms from 10 Hz to 10 kHz. Accurate measurements are obtained with spikes up to 3 times the maximum of each range.
  • Page 25 METER SCALING Refer to the above tables for the full scale counts (or displayed digits) produced by the available full scale input ranges with a scale factor of 1 and an offset of 0. The decimal point can be set for direct readout in (milli)volts or (milli)amperes.
  • Page 26 KEYSTROKES FOR SETUP key does not work, see Section 9 “Enabling & Locking Out Menu Items.” If the MENU Press Menu Press Digit Press Value Select Select Key Select Key _InPut _AC U __0.2U __2.0U _20.0U 200.0U 600.0U Selection of signal AC Volts 0.2, 2, 20, 200, 600V FS input type &...
  • Page 27 Press Menu Press Digit Press Value Select Select Key Select Key ConFG 000_0 Not rate of change Meter Operation as a rate of Rate x 0.1 Configuration change meter. Rate x 1 Extended meter only. Rate x 10 Rate x 100 Rate x 1000 Rate x 10000 Peak Display.
  • Page 28 Press Menu Press Digit Press Value Select Select Key Select Key Scaling method “Scale and Offset” if selected under SEtuP SCALE 0.0000 0.0000 0.0000 Select thru for first flashing digit, thru Scale factor for flashing other digits. Then press 0.0000 0.0000 0.0000 to move flashing decimal point.
  • Page 29 Reading Coordinates of 2 Points Scaling Method This scaling method applies a straight line fit between two points, which are determined from actual transducer signals and the desired corresponding meter readings. A low input signal, such as the output of a pressure transducer at zero pressure, and high input signal, such as the output of the same transducer at a known high pressure, are applied to the meter.

  • Page 30: Thermocouple Input

    14. THERMOCOUPLE INPUT The thermocouple signal conditioner board used for temperature measurement can be confi- gured via jumpers for either type J, K, E, N thermocouples or type T, R, S thermocouples, and for upscale or downscale open sensor indication. The meter software recognizes the thermo- couple board and will bring up the appropriate menu items for it;...
  • Page 31 4. Cold junction compensation (CJC) errors. Our meters do not use an actual cold junction in ice water as the thermoelectric reference, but they calculate an offset by measuring the voltage drop across the PN junction of a PNP transistor in close proximity to the junction of the thermocouple wires and the meter terminals.
  • Page 32 KEYSTROKES FOR SETUP key does not work, see Section 9 “Enabling & Locking Out Menu Items.” If the MENU Press Menu Press Digit Press Value Select Select Key Select Key _InPut __tC_ --.J °F_ °C_ Type J, °F or °C Selection of signal Thermocouple ...K...
  • Page 33 Press Menu Press Digit Press Value Select Select Key Select Key ConFG 000_0 No used. Meter Peak Display. Also selects “Peak” in 00 _ _0 Configuration “Peak or Valley” at rear connector. Operation of front Valley Display. Also selects “Valley” in panel PEAK button “Peak or Valley”...

  • Page 34: Rtd & Resistance Input

    15. RTD & RESISTANCE INPUT The standard RTD and resistance signal conditioner board are jumper selectable for four RTD types (DIN 100Ω platinum, ANSI 100Ω platinum, 120Ω nickel, 10Ω copper) and five resistance ranges (from 20.000Ω to 200.00 kΩ). Fixed 2Ω, 2 MΩ or 20 MΩ resistance ranges require a factory modified signal conditioner board where other ranges are no longer jumper selectable.
  • Page 35 RTD & RESISTANCE CONNECTION With the appropriate jumper settings, RTD and resistance measurements allow 2, 3 or 4-wire RTD hookup to the J5 connector, as illustrated. The meter applies a fixed excitation current. In 4-wire hookup, the excitation and sense wires are joined at the load.
  • Page 36 KEYSTROKES FOR SETUP key does not work, see Section 9 “Enabling & Locking Out Menu Items.” If the MENU Press Menu Press Digit Press Value Select Select Key Select Key _InPut _-rtd_ °F- Pt100 RTD, DIN alpha .00385, °F Selection of signal °C.
  • Page 37 Press Menu Press Digit Press Value Select Select Key Select Key SEtuP 00_00 1 = Function Reset 2 = Display Blank Meter Setup Control inputs 1 & 2 1 = Hold 2 = Display Blank (continued) 1 = Peak or Valley 2 = Display Blank (continued) 1 = Tare 2 = Display Blank...
  • Page 38 Press Menu Press Digit Press Value Select Select Key Select Key FiLtr 00000 Autofilter Filtering Input signal filter Batch average, 16 readings (continued) setting Moving average, 0.08 sec. Can be applied to dis- Moving average, 0.15 sec. play, setpoint, analog Moving average, 0.3 sec.

  • Page 39: Dual & Quad Relay Output Options

    16. DUAL OR QUAD RELAY OUTPUT OPTION An optional relay board may be installed in the meter main board at plug position P2, adjacent to the power supply board. Four board versions are available: 2 or 4 relays, mechanical or solid state. Once installed, the relay board is recognized by the meter software or PC-based Instrument Setup software, which will bring up the appropriate menu...
  • Page 40 KEYSTROKES FOR SETPOINT SETUP key does not work, see Section 9 “Enabling & Locking Out Menu Items.” If the MENU Press Menu Press Digit Press Value Select Select Key Select Key ALSEt 00000 AL1 relay closed AL2 relay closed Alarm Setup for Relay open or closed AL1 relay open AL2 relay closed...
  • Page 41 Press Menu Press Digit Press Value Select Select Key Select Key ALS34 00000 AL3 at or above AL4 at or above Alarm Setup for Alarm state occurs at AL3 below AL4 at or above relays 3 & 4 or above setpoint, or AL3 disabled AL4 at or above (continued)

  • Page 42: Analog Output Option

    17. ANALOG OUTPUT OPTION An optional analog output board may be installed in the meter at rear panel jack position J4, adjacent to the signal conditioner board. Once installed, this board is recognized by the meter, which will bring up the appropriate menu items for it. These will not be brought up if an analog output board is not installed.

  • Page 43: Serial Communication Options

    18. SERIAL COMMUNICATION OPTIONS A serial communications board may be connected to the meter main board at plug position P13 (middle position). Available boards are RS232, RS485 (with dual RJ11 connectors), RS485 Modbus (with dual RJ45 connectors), USB, USB-to-RS485 converter, Ethernet, and Ethernet- to-RS485 converter.
  • Page 44 Basic Ethernet Board No jumpers needed. RS232 Board e - Do not use (except for externally enabled RTS). Prevents use of Instrument Setup PC software. f - Do not use. g - Installed for normal operation. Note: Board is shipped with jumper g installed. RS485 Board, Full Duplex Operation b &...
  • Page 45 SERIAL CONNECTION EXAMPLES - 45 -...
  • Page 46 KEYSTROKES FOR SETUP key does not work, see Section 9 “Enabling & Locking Out Menu Items.” If the MENU Press Menu Press Digit Select Press Value Select Select Key .SEr __000 Send unfiltered signal Fixed Parameters: Output filtering Send filtered signal No parity __000U 300 baud...
  • Page 47 Press Menu Press Digit Select Press Value Select Select Key .SEr _0000U No line feed after carriage return Serial Setup 2 Line feed Line feed after carriage return _0000U No alarm data Alarm data with readings Alarm data with reading _0000U Continuous data output Control of data output...

  • Page 48: Excitation Output & Power Supply

    19. EXCITATION OUTPUTS Jumpers in upper right Jumpers b, c, d, e, f in the upper right of the power supply board allow selection of one of three available transducer excitation outputs. These are isolated to 50 Vdc from signal common, to 250 Vac from power, and to 2 kV from meter output options.

  • Page 49: Instrument Setup Via Pc

    20. INSTRUMENT SETUP VIA PC Instrument Setup (IS) Software is a PC program which is at no charge and is easier to learn than front panel programming. With the meter connected to the PC, it allows uploading, editing and downloading of setup data, execution of commands under computer control, listing, plotting and graphing of data, and computer prompted scaling.
  • Page 50 SETUP OF CONNECTED METER A setup file can be retrieved from the meter (DPM => Get Setup), be edited (View => Setup), be saved to disk (File => Save Setup), be retrieved from disk (File => Open Setup), and be downloaded into one or multiple meters (DPM =>...
  • Page 51 • The Readings pull-down menu provides three formats to display DPM data on the PC monitor. Use the Pause and Continue buttons to control the timing of data collection, then press Print for a hardcopy using your PC printer. - List presents the latest readings in a 20-row by 10-column table. Press Pause at any time to freeze the display.

  • Page 52: Custom Curve Linearization

    21. CUSTOM CURVE LINEARIZATION Curve.exe is a DOS-based, executable PC program used to set up an Extended meter so that the readings have a user-defined, non-linear relationship with the input signal. The calculated linearizing parameters are downloaded into non-volatile memory of the meter. For example, it allows a meter to correct for transducer nonlinearity or to display volume of an irregularly shaped tank based on liquid level.
  • Page 53 4) Equation entry mode, where the coefficients of a polynomial Y = K1X^P1 + K2X^P2 + K3*X^P3 + … are entered. Up to 20 terms are allowed. An offset can be built into X. You will be asked if your DPM has a revision of DPM4L or later. You will normally select 2 (yes), since revision DPM4L started to ship in August 2000.

  • Page 54: Meter Calibration

    22. METER CALIBRATION All analog input and analog output ranges of the meter have been digitally calibrated at the factory prior to shipment using calibration equipment certified to NIST standards. Calibration constants are stored digitally in non-volatile memory in EEPROM on the signal conditioner board and analog output board.

  • Page 55: Specifications

    23. SPECIFICATIONS Meter Display Type ........5 LED, 7-segment, 14.2mm (.56") high digits & 3 LED indicators Color ........................Red or green Range ..............-99999 to +99999 and -99990 to +99990 A to D Conversion Technique (Pat.5,262,780) ................ Concurrent Slope Read Rate ...............
  • Page 56 DC Volts Thermocouple (0.1°, 1° resolution) Range Resol. Resist. Error Type Range Error 1 GΩ 200.00 mV 10 µV -210 to 760°C .01% FS ±0.09°C 0.01% 1 GΩ 2.0000 V 100 µV -347to 1400°F .01% FS ±0.16°F of FS 10 MΩ 20.000 V 1 mV ±2 cts...
  • Page 57 Load Cell Input Range Resolution Resistance Zero Range Span Range Error 20.000 mV 1 µV 50.000 mV 1 µV -99999 to 0.01% of FS 1 GΩ 100.00 mV 10 µV 0 to ±99,999 99999 ±2 cts 250.00 mV 10 µV 500.00 mV 10 µV Thermocouple Accuracy...
  • Page 58 Scaling of Reading for Full Scale Output ........... -99,999 to +99,999 Isolation rating between signal common and analog output ........250V ac Insulation dielectric strength between signal common & analog output ..2.3 kV ac for 1 min Excitation Outputs Applicability ..

  • Page 59: Glossary Of Terms

    24. GLOSSARY OF TERMS Adaptive Filter Threshold A threshold which causes an adaptive moving average filter to be reset to the latest reading when the accumulated difference between individual readings and the filtered reading exceeds that threshold. Adaptive moving average filtering allows a meter to respond rapidly to actual changes in signal while filtering out normal noise.
  • Page 60 deviation band, and de-actuates when the reading falls outside. A limit (e.g., 50 counts) is set up around both sides of the setpoint to create a deviation band (e.g., 100 counts). Setting up a passband around a setpoint is often used for component testing.
  • Page 61 Hysteresis, Span Same relay operation as for split hysteresis, but specified differently. Here the setpoint is the upper control limit, and the lower control limit is the setpoint less the hysteresis band. Menu Mode The meter programming mode used for input and range selection, meter setup, and meter configuration.
  • Page 62 Rate of Change Meter A configuration mode of the Extended meter which allows the display of rate based on successive readings. The conversion to engineering units is achieved with the combination of a multiplier from 0.1 to 10,000 and a scale factor. The value displayed by the meter.
  • Page 63 Scaling, Reading Coordinates of 2 Points Method A scaling method, where the low and high input values are determined from actual signals. A known low signal is first applied to the meter. That signal is captured as the low input value, and the desired low reading is entered. A known high signal is then applied.

  • Page 64: Warranty

    In the event of a defect during the warranty period, the defective unit may be returned to the seller, which may be Laurel or a Laurel distributor. The seller may then repair or replace the defective unit at its option. In the event of such a return, freight charges from the buyer shall be paid by the buyer, and freight charges from the seller shall be paid by the seller.

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