Sibata LB-6N2 Operation Manual
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Sibata LB-6N2 Operation Manual

Digital dust indicator
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O P E R A T I O N M A N U A L
•
This operation manual describes precautions that are important for preventing accidents as
well as procedures used to handle the product.
•
Read this operation manual and the attached warranty thoroughly before use, and use the
product correctly.
•
After reading this operation manual and the warranty, keep them handy for future reference.
— Main Unit —
Thank you for purchasing this product.
CODE 080170-22

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Summary of Contents for Sibata LB-6N2

  • Page 1 CODE 080170-22 O P E R A T I O N M A N U A L — Main Unit — Thank you for purchasing this product. • This operation manual describes precautions that are important for preventing accidents as well as procedures used to handle the product.

  • Page 2: Table Of Contents

    Table of Contents Before Use ................5 About This Operation Manual ..........5 Product Contents ..............5 Safety Precautions ..............5 Users (Important) ..............5 Graphical Symbols ..............6 Cautions for Use ..............8 Overview ................9 Features ................9 Names of Parts .............. 10 Connector Cable ............
  • Page 3 8.2 Data Logging ..............19 8.3 Preparation for Measurement ........20 8.3.1 BG Measurement ..........20 8.3.2 When and How to Replace Filters ......21 8.3.3 SPAN Measurement—Sensitivity Correction ..22 8.4 Starting and Stopping Measurements ......24 8.4.1 Countdown Timer Measurement ......24 8.4.2 Manual Measurement .........25 8.4.3 Timed Measurement ..........25 8.5 Process After Measurement Is Finished (Cleaning Inside Detector Unit) .............27...
  • Page 4 10.6 Alarm Settings (Concentration Alarm) ......43 10.7 Auto Start Settings .............43 10.8 Open Collector Output ..........44 10.9 Auxiliary Function Settings .........45 10.10 Hour Meter Settings ...........47 10.11 Firmware Version ............47 11 Communications ............48 12 List of Display Terms ........... 48 13 Optional Parts and Consumables .......

  • Page 5: Before Use

    The copyright of this operation manual belongs to Sibata Scientific Technology Ltd. This operation manual, or any part thereof, may not be reproduced, reprinted, or altered in any form without prior written permission from Sibata Scientific Technology Ltd. Product Contents Check the package for the following items before using the product.

  • Page 6: Graphical Symbols

    Graphical Symbols The degree of danger involved in using the product without observing the indicated precautionary information is indicated by one of two labels: WARNING or CAUTION. Always observe the precautionary information indicated with these labels, which is important for ensuring safety. Labels Indicating Degrees of Damage or Injury Indicates a potentially hazardous situation which, if not avoided, will result in serious injury or death.
  • Page 7 • When finished using the product, be sure to turn OFF the power switch and disconnect the AC adapter from the power outlet. Not doing so could cause fire or a short circuit. • Never attempt to connect to the connector using wire or other metal objects, or any other method not specified in this manual.

  • Page 8: Cautions For Use

    • Please be aware that in the unlikely event of a product failure, Sibata bears no responsibility to compensate for data not acquired or recorded, and is not responsible for loss of data or for other direct or indirect damages incurred from such loss.

  • Page 9: Overview

    The LD-6N2 digital dust indicator is a portable relative dust concentration analyzer that is capable of measuring the dust exposure to individuals. It is based on the Sibata LD-6N, but is smaller and lighter. Just like the LD-6N, it features separate detector and control units to facilitate being worn by workers.

  • Page 10: Names Of Parts

    3 Names of Parts Major Components Detector unit Connector cable Control unit Detector Unit Protective cap Combination standard scattering plate and zero filter Air sampling port (referred to as both a standard scattering plate and a zero filter in the operation manual) Output switch (black) and SPAN switch (white) Bracket for wearing the unit...
  • Page 11 Control Unit Connector for connector cable Output connector Operation indicator LED (SIGNAL) During measurement a green LCD screen LED flashes. Power switch USB connector (A-miniB) Control panel Power connector Control Panel [KEY LOCK] switch When pressed the key is locked, and switch operations are not received on the control [START/STOP] switch...

  • Page 12: Connector Cable

    4 Connector Cable Connecting Connectors The connector cable is connected to the detector unit and control unit in the same manner, but note that the connector cable is designed with an orientation that prevents it from being connected in the opposite orientation. Align the connector key with the corresponding key slot.

  • Page 13: Wearing The Instrument

    5 Wearing the Instrument Wearing the Control Unit Open the cover on the soft case and insert the control unit into the case from above (it is already inserted into the soft case at the time of purchase). Close the soft case cover and connect the connector cable via the hole in the cover.

  • Page 14: Power Supply

    LED to illuminate. If the battery charge indicator LED does not illuminate after five minutes, there is a possibility that the life of the internal nickel metal-hydride batteries has expired. Contact your Sibata representative or the distributor where you purchased the product.

  • Page 15: Using The Internal Nickel Metal-Hydride Batteries

    OFF. The backup battery is not rechargeable, so it must be replaced. Contact your Sibata representative or the distributor where you purchased the product to request repairs.

  • Page 16: Startup Screen

    7 Startup Screen Graphics: In this operation manual, the LCD screen status is indicated as follows. Display example 002 ···· Steady illumination (black) ···· Flashing (gray) Turn the power switch ON and confirm that each item is displayed on the LCD screen.

  • Page 17: Main Menu Screens

    Main Menu Screens After the power switch is turned ON and the dust measurement screen is displayed, each press of [MODE/ESC] toggles the display to a different screen, in the sequence indicated below. Dust measurement screen [MODE/ESC] Background measurement screen [MODE/ESC] Option screen (basic settings)

  • Page 18: Measurement Procedure

    8 Measurement Procedure Operation Flow for Each Measurement There are three types of measurements that can be taken with this product: •Countdown timer measurement, •Manual measurement, and •Timed measurement. The flow for each type of measurement is shown in the following diagram. •...

  • Page 19: Manual Measurement

    8.1.2 Manual Measurement This method uses [START/STOP] to start and stop measurements. See P. 29 Measurement time Manual start by switch operation Manual stop by switch operation 8.1.3 Timed Measurement This method automatically starts measurement at the previously specified measurement start time. Measurements are stopped by either of the following two ways.

  • Page 20: Preparation For Measurement

    Preparation for Measurement 8.3.1 BG Measurement Background (BG) refers to a false reading that is output when the detector is filled with clean air. BG levels lead to excessive dust measurement values. Therefore, this product includes a function that measures the background level before measuring dust and then subtracts that value (BG value) from dust measurements.

  • Page 21: When And How To Replace Filters

    BG value. If "ERR1" is displayed again, contact your Sibata representative to request service (such as inspection, overhaul, or repair).

  • Page 22: Span Measurement-Sensitivity Correction

    8.3.3 SPAN Measurement—Sensitivity Correction The measurement sensitivity of dust indicators can vary due to contamination inside the detector unit, deterioration of electronic parts, misaligned optical components caused by vibration, or other factors. To correct for such variations, the standard scattering plate is measured before measurements, and the normal sensitivity is maintained from prespecified standard scattering plate values.
  • Page 23 If "ERR2" is displayed, double-check the orientation of the standard scattering plate and its installation position. Then perform the SPAN measurement again. If "ERR2" is displayed again, contact your Sibata representative to request service (such as overhaul or re-calibration). Remove the standard scattering plate and install the air sampling port.

  • Page 24: Starting And Stopping Measurements

    Starting and Stopping Measurements For settings in individual measurements, see 9 Basic Settings. 8.4.1 Countdown Timer Measurement (This example shows setting the measurement time to 1 hour and 5 minutes.) In the main menu, press [MODE/ESC] until the "MEAS" screen is displayed. However, the information displayed will vary depending on actual settings specified.

  • Page 25: Manual Measurement

    8.4.2 Manual Measurement If the measurement time of the countdown timer measurement is set to 00 hours and 00 minutes, then measurements are performed in manual measurement mode. Alternates Manual between screens measurement • Screens automatically change in the sequence indicated by arrows. •...
  • Page 26 • Pressing [START/STOP] during measurement stops the measurement and displays the accumulated count value at that point. • The instantaneous value can be displayed during measurement by pressing [UP] or [DOWN]. • After the standby screen closes and the timed measurement is finished, the timing for the battery check (an internal process) will be different from ordinary cases.

  • Page 27: Process After Measurement Is Finished (Cleaning Inside Detector Unit)

    If the elapsed measurement time exceeds 9,999 hours during measurement, then only the last four digits are displayed. Displays zeros. The fifth digit cannot be displayed. Display for an elapsed Display for an elapsed measurement time of 59 minutes measurement time of 10,032 hours Display After Measurement: The following screens are ------- displayed for all measurement modes.

  • Page 28: Basic Settings

    9 Basic Settings Countdown Timer Measurement Settings Set the measurement time as follows (to a setting other than 000 hours and 00 minutes). In the main menu, press [MODE/ESC] until the "OPT" screen is displayed. Then press [UP] or [DOWN] to display "TIME" for measurement time setting. Measurement time setting mode Measurement time setting value (HHH:MM) Example: 000 hours and 01 minutes...

  • Page 29: Manual Measurement Settings

    Manual Measurement Settings Manual measurement can be carried out by setting the measurement time for countdown timer measurement to 000 hours and 00 minutes. In the main menu, press [MODE/ESC] until the "OPT" screen is displayed. Then press [UP] or [DOWN] to display "TIME" for measurement time setting. Measurement time setting mode Measurement time (HHH:MM) Max.: 999 hours and 60 minutes...

  • Page 30: Timed Measurement Settings

    Timed Measurement Settings 9.3.1 Setting the Internal Clock To use the timed measurement mode, the internal clock must first be set to the current time. Set the clock to the current time as follows. In the main menu, press [MODE/ESC] until the "SYS" screen is displayed. Then press [UP] or [DOWN] to display "CLCK"...
  • Page 31 Pressing [START/STOP] causes the last two digits of the "YEAR" setting to flash and enables the year setting to be changed. The flashing value can be changed by pressing [UP] or [DOWN]. After changing the current year, then press [START/STOP] to enter the setting. Next, the month portion of the time setting flashes.

  • Page 32: Timed Measurement Settings

    9.3.2 Timed Measurement Settings Do the following after the internal clock is set. Set the measurement time by following the procedure described in 9.1 Countdown Timer Measurement Settings. In the main menu, press [MODE/ESC] until the "OPT" screen is displayed. Then press [UP] or [DOWN] to display "TIMR"...

  • Page 33: Data Logging Settings

    Data Logging Settings 9.4.1 Logging Modes The following two types of logging modes are available: •Overwrite •One-time If the amount of data exceeds the The LOG. memory capacity (40,000 data indicator will flash Overwrite points), or if the record number when overwriting exceeds 60, then recording continues starts.

  • Page 34: Setting The Logging Cycle Time

    Pressing [START/STOP] causes the setting to flash. Then press [UP] or [DOWN] to display either "OVER" or "ONE" and [START/STOP] again to enter the setting. When the data logging mode is ON, the LOG. indicator is displayed on the LCD screen.

  • Page 35: Function Settings

    10 Function Settings 10.1 Memory Capacity and Deleting Data 10.1.1 Memory Capacity The current available memory capacity that can be used for recording can be checked. In the main menu, press [MODE/ESC] until the "OPT" screen is displayed. Then press [UP] or [DOWN] to display "MEM" on the screen. This displays the number of data points that currently can be recorded in memory.

  • Page 36: Deleting Data

    Press [MODE/ESC] to return to the main menu. Please be aware that in the unlikely event of a product failure, Sibata bears no responsibility to compensate for data not acquired or recorded, and is not responsible for loss of data or for other direct or indirect damages incurred from such loss.

  • Page 37: Memory Capacity And Memory Consumption

    10.1.3 Memory Capacity and Memory Consumption In some cases, it may appear that memory capacity has decreased by more than the number of data points actually recorded. This is because 80 data points are recorded in internal memory in units of one page. •...
  • Page 38 Example of 40 Data Points Recorded in Record Number 1 and 60 Recorded in Record Number 2 During Two Logging Cycles A memory capacity of 39,840 is displayed (equal to 40,000 - 80 - 80). Total memory capacity (40,000 data points) Page 1 Page 2 (80 data points)

  • Page 39: Serial Output

    10.2 Serial Output To output measurement data via the USB connector, switch serial output "ON" as follows. The output data can be imported to a computer using the terminal software. For USB connections use the provided USB cable (A-miniB), and download the USB driver from the provided LD-6N/6N2 software (CD-ROM).

  • Page 40: Entering The K Factor

    10.3 Entering the K Factor This product is equipped with a function to convert the relative concentration (CPM value) to mass concentration based on a preset mass concentration conversion coefficient (K factor), and display the result. 10.3.1 Conversion to Mass Concentration Values Use the following formula to determine the mass concentration from the relative concentration obtained with this product.

  • Page 41: Entering The K Factor

    10.3.3 Entering the K Factor Products are assigned a value at the factory based on measurement of calibration particles at "1 cpm = 0.001 mg/m ." Therefore it is necessary to calculate the K factor to be entered from the following equation.

  • Page 42: Backlight

    10.5 Backlight The length of time before the LCD backlight switches OFF can be changed as follows. In the main menu, press [MODE/ESC] until the "SYS" screen is displayed. Then press [UP] or [DOWN] to display "B/L" on the screen. Press [UP] or [DOWN] to display "ON"...

  • Page 43: Alarm Settings (Concentration Alarm)

    10.6 Alarm Settings (Concentration Alarm) If the instantaneous concentration exceeds the specified concentration, an alarm sound is emitted and open collector values can be output. In the main menu, press [MODE/ESC] until the "SYS" screen is displayed. Then press [UP] or [DOWN] to display "ALM" on the screen. Press [START/STOP], and [UP] or [DOWN] to display "ON"...

  • Page 44: Open Collector Output

    10.8 Open Collector Output Depending on the settings, an internal transistor can be operated to use the output connector on the control unit for three types of functions: concentration measurement values (pulse), external device control, or concentration alarm. The "O/C" screen allows selection and setting for these functions. In the main menu, press [MODE/ESC] until the "SYS"...

  • Page 45: Auxiliary Function Settings

    These setting are for dedicated LD-6N/6N2 external signal units. This setting does not need to be specified for normal operation. If you have any questions about the specifications or retail, contact your Sibata representative or the distributor where you purchased the product.
  • Page 46 Press [UP] or [DOWN] to change the second setting for the transmission interval, and press [START/STOP] to enter the setting. (2) External Signal Unit Settings (Measurement Range) The measurement range to the dedicated LD-6N/6N2 external signal unit can be specified. Four types of measurement ranges are available for signals sent to external units: "AUTO,"...

  • Page 47: Hour Meter Settings

    10.10 Hour Meter Settings This displays the cumulative number of hours various components have been operated. In the main menu, press [MODE/ESC] until the "SYS" screen is displayed. Then press [UP] or [DOWN] to display "H/M" on the screen. The LCD screen display is changed once a second, in the sequence indicated by arrows.

  • Page 48: Communications

    11 Communications The LD-6N2 has a communication function in which measurement data is transmitted from the serial output See P. 39 , and in addition setting information can be sent to the LD-6N2 from the computer, and measurement data acquired by the LD-6N2 can be sent to the computer, by using the provided LD-6N/6N2 software (CD-ROM).
  • Page 49 Hour and minute setting Screen for setting the hour and minute HH: M M K factor entry Screen for entering the K factor Logging setting Screen for specifying data logging settings Cumulative operating hours for the light source Laser operating time laser (display only) Screen for measuring dust and displaying Dust measurement...

  • Page 50: Optional Parts And Consumables

    13 Optional Parts and Consumables Optional Parts Purchase these separately based on intended applications. Item Code Product Name 080170-2201 Stand for detector unit of LD-6N2 080170-225 Suction pump unit for LD-6N2 080150-254 Filter holder NWPS-254, for PM4 personal dust sampler 080130-098025 Glass fiber filter, PTFE binding,TF98R, 25 mm dia., 100 pcs 080860-5050...

  • Page 51: Suction Pump Unit

    13.2 Suction Pump Unit By using the optional suction pump unit, the filter holder NWPS-254 for PM4 personal dust sampler can be installed. By installing the filter holder NWPS-254, and carrying out suction with the suction pump, PM4 real-time measurements and sampling through the filter can be carried out simultaneously.

  • Page 52: Installing The Lower Parts Of The Suction Pump Unit

    13.2.3 Installing the Lower Parts of the Suction Pump Unit Remove the two screws of the fan unit on the bottom of the detector unit, and remove the fan unit from the detector unit (using a commercially available No. 2 Phillips screwdriver).

  • Page 53: Installing The Upper Parts Of The Suction Pump Unit

    13.2.4 Installing the Upper Parts of the Suction Pump Unit • Remove the nozzle cover, nozzle, metal sampling plate, spacer, and PTFE gasket from the filter holder NWPS-254 for PM4 personal dust sampler. Nozzle Spacer Metal sampling Nozzle cover plate PTFE gasket Filter holder NWPS-254, for PM4 personal dust sampler These parts are used.

  • Page 54: Troubleshooting

    14 Troubleshooting If a problem occurs during use of the product, promptly stop using it. If the problem has been caused by a product failure, do not use it again and request repairs. Problems sometimes occur for reasons other than a product failure. Before requesting repairs, check the following.
  • Page 55 Problem Possible Cause Remedy The measurement value is Sensitivity correction value After BG measurement, confirm the abnormal (high). is abnormal. standard scattering plate orientation and position, and perform SPAN measurement several times. See P. 20 and 22 The detector interior Request sensitivity calibration or (optical system) is overhaul.
  • Page 56 Problem Possible Cause Remedy "ERR1" is displayed. The detector unit is Install the zero filter facing downwards and contaminated so the BG leave for 3 minutes or more, then perform value is high. BG measurement again. See P. 20 If the problem persists, request overhaul or re-calibration.

  • Page 57: Specifications

    15 Specifications Item Code 080170-22 Model LD-6N2 Measurement Light scattering Principle Light Source Semiconductor laser Intake Method Fan motor Measurement 1 to 100,000 CPM (0.001 to 100.0 mg/m Range Measurement 1 cpm = 0.001 mg/m (for calibration particles) Sensitivity Measurement ±10 % of specified value ±1 count (for calibration particles) Accuracy Display...

  • Page 58: Precautions For Maintenance, Storage, And Transport

    (3) If you are delivering the product to Sibata via courier, in addition to the product model number, enter "AS" in the "Details" and "Name of Goods" fields on the invoice. This is to prevent the staff from damaging the sealed bags with a box cutter when unpacking the delivery.

  • Page 59: Product Disposal

    Sibata representative or the distributor where you purchased the product. 19 Warranty If a Sibata product fails within one year from date of purchase, it will be repaired free of charge. To request repairs, contact the distributor where you purchased the product.
  • Page 60 Note) Shape, dimensions, specifications, and other product information are subject to change without notice in the interest of product improvement to the extent that product functions and applications will not be impaired.

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