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Shinko Denshi LF Series Operation Manual

Semi-micro and analytical balance
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Semi-micro and Analytical Balance
LF Series
Operation Manual
To ensure safe and proper use of the balance, please read
●
this manual carefully.
After reading this manual, store it in a safe place near the
●
balance, so you can review it as needed.
SHINKO DENSHI CO., LTD
380002M 21

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Summary of Contents for Shinko Denshi LF Series

  • Page 1 To ensure safe and proper use of the balance, please read ● this manual carefully. After reading this manual, store it in a safe place near the ● balance, so you can review it as needed. SHINKO DENSHI CO., LTD...
  • Page 2 Preface Thank you very much for choosing the LF series balance. This balance has an automatic calibration (span adjustment) function, which can be easily used at any time at the press of a button. The balance also has a function that alerts the user of when it is time to calibrate the balance depending on the surrounding environment.
  • Page 3 Instructions ● This manual is copyrighted by SHINKO DENSHI CO., LTD. and may not be reproduced in part or in whole without permission. ● Please understand that part of this manual may not agree with the product due to modifications or other such changes to it.

  • Page 4: Important Notice

    This manual is copyrighted by SHINKO DENSHI CO., LTD. All rights reserved. Do not reproduce or disclose drawings and technical documents without prior written consent from SHINKO DENSHI CO., LTD.

  • Page 5: How To Use This Manual

    How to Use This Manual Symbols in this manual Understand the meanings of the following symbols to follow the instructions in this manual: Symbol Meaning This symbol indicates a dangerous situation that may cause death or serious injury if not avoided. This symbol indicates a situation that may cause damage to the system or equipment, or data corruption, deletion, or overwriting if not avoided.
  • Page 6 Notational Conventions In this manual, the following notation is used. The balance Refers to an LF series product. The names of the operation keys provided on the front of the main [On/Off] key unit are enclosed in brackets [ ].

  • Page 7: Table Of Contents

    Contents Preface ............................i Important Notice.........................iii How to Use This Manual ......................iv Contents .......................... vi 1 How to Begin .........................1 1-1 Wa r n i n g s r e g a r d i n g U s e ....................1 1-2 For More Precise Measurements..................
  • Page 8 3-4 Obtaining Weight Multiplied by a Coefficient..............30 3-5 Measuring Specific Gravity ....................32 3-5-1 Specific gravity measurement procedure..............32 3-5-2 Preparing measurement tools..................32 3-5-3 Measurement ......................33 3-5-4 When using a liquid other than water ................. 35 3-5-5 Printing the specific gravity data ................. 36 3-6 Adding Multiple Measurements ..................
  • Page 9 5-1 Select and Switch of Weighing Units ................. 69 5-2 Readability Setting......................70 5-3 Automatic Switching of Scale Intervals ................71 5-4 Turning ON/OFF the Automatic Switching of Scale Intervals with a Single Touch ..... 72 5-5 Saving the Container (Tare) Weight ................... 73 5-6 Power Setting ........................
  • Page 10 6-4-1 Data format......................... 96 6-4-2 Meanings of data ......................97 6-4-3 Communication format examples ................100 6-4-4 Special formats ......................100 6-5 Input Commands ......................104 6-5-1 Procedure for transmission..................104 6-5-2 Input command examples ..................104 6-5-3 Command format...................... 105 6-5-4 Format of each command..................
  • Page 11 (Memo) - x -...

  • Page 12: How To Begin

    LF Series Operation Manual 1 How to Begin 1 How to Begin 1-1 Warnings regarding Use Do not disassemble or modify the balance. Doing so could result in injury, electric shock, fire and other accidents or failures. For inspection and adjustment, contact the retailer from whom the balance was purchased.
  • Page 13 1 How to Begin LF(R) Series Operation Manual Do not apply excessive force to or impact the balance. Doing so could damage or result in failure of the balance. Carefully place samples on the balance. Do not allow the balance to remain in an overloaded state (o-Err indication).
  • Page 14 LF Series Operation Manual 1 How to Begin After turning the balance on, leave it unused for more than 5 hours to acclimate it to the surrounding environment. Failure to do so could result in measurement errors. To ensure accurate measurements, be sure to acclimate the balance to the environment with the power on.

  • Page 15: For More Precise Measurements

    1 How to Begin LF(R) Series Operation Manual 1-2 For More Precise Measurements To be able to conduct more precise measurements, it is necessary to minimize the factors that contribute to measurement errors. There are a great variety of such error-inducting factors, which can be linked to machine error and performance of the balance itself, as well as the properties and condition of samples being measured, and the measuring environment (e.g., vibration, temperature/humidity).

  • Page 16: Precautions On The Samples

    LF Series Operation Manual 1 How to Begin 1-2-2 Precautions on the Samples • Generally speaking, objects made of synthetic resin and glass have high electric Static Electricity insulating properties and, therefore, are apt to be electrically charged. Measuring a charged sample as is may cause unstable indications, with resultant poor reproducibility of the results.

  • Page 17: Checking Supplied Items

    1 How to Begin LF(R) Series Operation Manual 1-3 Checking Supplied Items The following items are in the box. In the unlikely event of problems such as missing or broken items, please contact the retailer from whom the balance was purchased. - 6 -...

  • Page 18: Names And Functions Of Component Parts

    LF Series Operation Manual 1 How to Begin 1-4 Names and Functions of Component Parts Names of Component parts Level Adjuster Measurement pan Panel section Windshield ring Door storage cover 10 D-SUB9P RS232C output connector Windshield 11 AC adapter jack...

  • Page 19: Functions Of Operation Keys

    1 How to Begin LF(R) Series Operation Manual 1-5 Functions of Operation Keys The operation keys are located on the front of the main unit. Use these keys to operate and set the balance. 1-5-1 Operation keys 1-5-2 Operation key explanations Operation key Function Used to power on/off the balance.
  • Page 20 LF Series Operation Manual 1 How to Begin How to press keys The functions of some operation keys depend on how they are pressed. For example, the [Set] key saves a setting when it is pressed quickly. (This is the normal way of pressing keys.)

  • Page 21: How To Read Displayed Signs

    1 How to Begin LF(R) Series Operation Manual 1-6 How to Read Displayed Signs Each of the symbols displayed on the front of the main unit has the following meanings: - 10 -...
  • Page 22 LF Series Operation Manual 1 How to Begin 7-segment character display Numeric characters Alphabet Some characters look the same, for example, “5” and “S,” and “H,” “K,” and “X.” - 11 -...

  • Page 23: Assembling And Installing The Balance

    1 How to Begin LF(R) Series Operation Manual 1-7 Assembling and Installing the Balance (1) Attach the windshield ring, the pan base, and the weighing pan, in this order, to the main unit. Check that these parts are free from dust and other foreign matter before attaching them.

  • Page 24: Operating The Windshield Doors

    LF Series Operation Manual 1 How to Begin 1-8 Operating the Windshield Doors The left and right windshield doors can be opened and closed by using the upper and lower knobs on both sides of the windshield. Two knobs are used on either side; one is secured on the door (upper knob), and the other can be slid up and down (lower knob).
  • Page 25 1 How to Begin LF(R) Series Operation Manual Opening and closing the right windshield door The right windshield door can be opened and closed by operating the left lower knob. Knob status Opening and closing the left windshield door The left windshield door can be opened and closed by operating the right lower knob. Knob status * To open and close the left and right windshield doors individually, push the left and right lower knobs down to unlock.

  • Page 26: Basic Operation

    LF(R) Series Operation Manual 2 Basic Operation 2 Basic Operation 2-1 Powering On/Off and Operation Check Turning the balance ON/OFF Check that the AC adapter is connected to the Turn the balance ON. balance. When the AC adapter is plugged in, the balance enters the standby state and an asterisk “*”...
  • Page 27 2 Basic Operation LF(R) Series Operation Manual When the balance is turned ON, it is in the same measurement mode as when it was turned OFF. For example, if the balance was turned OFF in counting mode, when it is turned ON it is still in counting mode. When the balance is stabilized, the display shows a circle “...

  • Page 28: Zero-Point Adjustment

    LF(R) Series Operation Manual 2 Basic Operation 2-2 Zero-point Adjustment Zeroing a deviated readout is called “zero-point adjustment.” Examine the surface of the weighing section. Check that nothing is on the weighing section. Execute zero-point adjustment. Press the [Zero/Tare] key. The readout becomes zero and the “...

  • Page 29: Weighing A Sample In A Container (Tare)

    2 Basic Operation LF(R) Series Operation Manual 2-3 Weighing a Sample in a Container (Tare) When weighing a sample in a container (tare), only the sample is weighed by subtracting the mass of the container. This is called “tare.” Place the container on the weighing pan. The mass of the container is displayed.

  • Page 30: Weighing An Added Sample

    LF(R) Series Operation Manual 2 Basic Operation 2-4 Weighing an Added Sample Place an additional sample on the balance. Only the addition is measured. Put a sample in place. The mass of the sample is displayed. Set the tare. Press the [Zero/Tare] key. The readout becomes zero (tare range set).

  • Page 31: Displaying The Sum Of The Container And The Sample

    2 Basic Operation LF(R) Series Operation Manual 2-5 Displaying the Sum of the Container and the Sample The summed weight of the sample and the container is displayed (gross weight readout). Gross weight can only be displayed when the balance is in simple weight measurement mode.

  • Page 32: Basics Of Function Settings

    LF(R) Series Operation Manual 2 Basic Operation 2-6 Basics of Function Settings Use the Function key to change the balance’s settings. This section describes the basic operations for setting functions. Go to the function setting mode. Press and hold the [Function] key. After “Func” is displayed, release the key.

  • Page 33: Underfloor Measurement

    2 Basic Operation LF(R) Series Operation Manual 2-7 Underfloor Measurement This balance has a hook for underfloor measurement. You can weigh samples by hanging a bottom pan or the like from the hook. Use underfloor measurement for weighing samples of ferromagnetic substances, samples having strong static electricity and other samples that cannot be accurately weighed on the weighing pan.

  • Page 34: Various Measuring Methods

    LF(R) Series Operation Manual 3 Various Measuring Methods 3 Various Measuring Methods 3-1 Simple Weight Measurement By default, the balance is set to simple weight measurement mode. To return to simple weight measurement mode from other weighing modes, perform following operations. Go to function setting mode.

  • Page 35: Counting The Number Of Parts

    3 Various Measuring Methods LF(R) Series Operation Manual 3-2 Counting the Number of Parts The balance saves the weight of a sample (unit weight) using the automatic memory update method (simplified SCS method) to count the number of samples. First, put a set number of samples in place. Next, put up to three times the set number of additional samples in place.

  • Page 36: Displaying The Average Sample Weight

    LF(R) Series Operation Manual 3 Various Measuring Methods Weigh the samples. Place the set number of samples on the weighing pan and then press the [Function] key. The displayed sample quantity (Example: “on 10 Pcs”) blinks. Add more samples. Add more samples. The number of additional samples can be up to three times the set number of samples.
  • Page 37 3 Various Measuring Methods LF(R) Series Operation Manual If “Sub” is displayed, it indicates that you added more than three times as many samples as the set number. Decrease the number of additional samples. Starting from a small number of samples, gradually increase the number of samples to increase counting accuracy.

  • Page 38: Measuring Percentage

    LF(R) Series Operation Manual 3 Various Measuring Methods 3-3 Measuring Percentage The weight of a sample is shown as a percentage of the reference sample weight. A reference sample weight can be set by weighing an actual sample (setting a reference weight by weighing an actual sample) or entering a value (setting a reference weight by entering a value).

  • Page 39: Setting A Reference Weight By Entering A Value

    3 Various Measuring Methods LF(R) Series Operation Manual 3-3-2 Setting a reference weight by entering a value Go to the function setting mode. Press and hold the [Function] key until “Func” is (Refer to Section 2-6 “Basics of Function displayed. Settings.”) Select percentage weighing mode.
  • Page 40 LF(R) Series Operation Manual 3 Various Measuring Methods The readability is automatically set based on the saved reference weight. Readability Range of Reference Weight Lower weight limit ≤ Reference weight < Lower weight limit × 10 Lower weight limit × 10 ≤ Reference weight < 0.1% Lower weight limit ×...

  • Page 41: Obtaining Weight Multiplied By A Coefficient

    3 Various Measuring Methods LF(R) Series Operation Manual 3-4 Obtaining Weight Multiplied by a Coefficient Measured weight is multiplied by a set coefficient, and the result be displayed. For example, if “2.35” is set for the coefficient, and the weight of the sample is “2000 g,” the given readout is “4700.”...
  • Page 42 LF(R) Series Operation Manual 3 Various Measuring Methods Save the coefficient. Press the [Set] key. Weigh a sample. The weight of the sample is multiplied by the coefficient, and the result is displayed. The increment of the readability is automatically set to 1, 2, or 5 depending on the entered coefficient.

  • Page 43: Measuring Specific Gravity

    3 Various Measuring Methods LF(R) Series Operation Manual 3-5 Measuring Specific Gravity Use either underfloor measurement or the optional specific gravity measurement kit to measure specific gravity. When using underfloor measurement, you need a cage or net in which to place a sample, string, a container, and other tools depending on the sample you are going to measure.

  • Page 44: Measurement

    LF(R) Series Operation Manual 3 Various Measuring Methods 3-5-3 Measurement Go to the function setting mode. Press and hold the [Function] key until “Func” is (Refer to Section 2-6 “Basics of Function displayed. Settings.”) Select gravimeter mode. Press the [Zero/Tare] key several times to select “1.SEt 5.”...
  • Page 45 3 Various Measuring Methods LF(R) Series Operation Manual Save the water temperature. Press the [Set] key. Hang the cage only and set the weight readout to Hang only the cage from the underfloor weighing hook. zero. Press the [Zero/Tare] key. The readout changes to zero.

  • Page 46: When Using A Liquid Other Than Water

    LF(R) Series Operation Manual 3 Various Measuring Methods Place the sample in the cage. Place the sample in the cage and immerse the sample fully in the water. When the weight readout is stabilized, press the [Set] key. The measured specific gravity value is displayed. Keep the cage away from the liquid container.

  • Page 47: Printing The Specific Gravity Data

    3 Various Measuring Methods LF(R) Series Operation Manual 3-5-5 Printing the specific gravity data To output the measured specific gravity data to a printer, perform the following operations depending on settings. Before measurement Press the [Print] key to print data (whether the balance is stable or unstable), regardless of the “71.

  • Page 48: Adding Multiple Measurements

    LF(R) Series Operation Manual 3 Various Measuring Methods 3-6 Adding Multiple Measurements Multiple samples are weighed consecutively and the sum is displayed. You can choose to replace samples (cumulate function) for each addition or leave the previous samples on the scale as you add more (net addition function). The addition function can be used in simple weight measurement mode, the counting mode, the percentage weighing mode and the unit conversion mode.

  • Page 49: Weighing With The Addition Function

    3 Various Measuring Methods LF(R) Series Operation Manual 3-6-2 Weighing with the addition function Put the first sample in place. After an asterisk “*” is displayed, press the [Set] key. The measured value is saved and a sigma “∑” sign is displayed for several seconds. (The tare range is set automatically when net addition is selected.) Unload the previous sample, check that the...
  • Page 50 LF(R) Series Operation Manual 3 Various Measuring Methods To clear the cumulative weight Cumulate: Press the [Zero/Tare] key when the cumulative weight is displayed. Net addition: Press the [Zero/Tare] key. (The cumulative weight is cleared whether the cumulative weight is displayed or not.) After clearing the cumulative weight, press the [Function] key to return to the measurement mode.

  • Page 51: Judging Between Too Heavy And Too Light (Limit Function)

    3 Various Measuring Methods LF(R) Series Operation Manual 3-7 Judging between Too Heavy and Too Light (Limit Function) You can set several limit values to be used to judge whether measurements are within the specified limits. The limit function can be used in simple weight measurement mode, counting mode, percentage weighing mode and unit conversion mode.
  • Page 52 LF(R) Series Operation Manual 3 Various Measuring Methods Depending on the number of judgment points, the “<” mark shown in the range indicated by “ ” appears at all times. In 1-point setting, only the lower limit is set and is used for judging whether samples are “OK (appropriate range)”...
  • Page 53 3 Various Measuring Methods LF(R) Series Operation Manual The judgment result can also be shown on a graph. Set the function “2A.LG.” to “2” (2-point bar graph). (Refer to Appendix 1 “Function Setting List.”) The bar graph display is available only with the 2-point setting. Judgment criteria and limit value setting One of the following criteria is used for judgment.
  • Page 54 LF(R) Series Operation Manual 3 Various Measuring Methods Detailed function settings The limit function can be set to a specific value with the function settings. When the function setting “2.SEL” is “2” or “3,” the following items can be set by pressing the [Function] key.

  • Page 55: Limit Function Settings

    3 Various Measuring Methods LF(R) Series Operation Manual 3-7-1 Limit function settings First set the limit function and then set limit values. Go to the function setting mode. Press and hold the [Function] key until “Func” is (Refer to Section 2-6 “Basics of Function displayed.

  • Page 56: Judgment Using Definite Values

    LF(R) Series Operation Manual 3 Various Measuring Methods Save the settings. Press the [Set] key. Next, set values for judgment (limit values) and take measurements. 3-7-2 Judgment using definite values Use the function setting “24.tYP. 1” to judge samples using definite values. Judgment using definite values by setting actual sample weights Weigh a sample and set the upper-limit and lower-limit.
  • Page 57 3 Various Measuring Methods LF(R) Series Operation Manual Judgment using definite values by entering values Set the upper limit and the lower limit by using the keys. Check that the limit function for judgment using definite values is selected. (Refer to the previous section “Limit function settings.”) Set to actual sample weight setting mode.

  • Page 58: Judgment Using Deviation Values

    LF(R) Series Operation Manual 3 Various Measuring Methods 3-7-3 Judgment using deviation values Use the function setting “24.tYP.2” to judge samples using deviation values. Judgment using deviation values by setting actual sample weights Weigh a sample and set the reference weight, the upper-limit, and the lower-limit. Check that the limit function for judgment using deviation values is selected.
  • Page 59 3 Various Measuring Methods LF(R) Series Operation Manual Judgment using deviation values by entering values Set the reference weight, the upper limit, and the lower limit by using the keys. Check that the limit function for judgment using deviation values is selected. (Refer to Section 3.7.1, “Limit function settings.”) For judgment using deviation values by entering values, enter the difference between the upper limit and the lower limit with respect to the reference weight.

  • Page 60: Statistical Operation Function

    LF(R) Series Operation Manual 3 Various Measuring Methods 3-8 Statistical Operation Function The statistical operation function collects weight data and displays maximum, average, and other statistical values. 3-8-1 Calculation items Calculation item Display example Maximum value Minimum value Average value Standard deviation Width (Maximum –...

  • Page 61: Operation Method

    3 Various Measuring Methods LF(R) Series Operation Manual 3-8-2 Operation method Go to the function setting mode. Press and hold the [Function] key until “Func” is (Refer to Section 2-6 “Basics of Function displayed. Settings.”) Set the weighing mode to the statistical operation Press the [Function] key several times to select “1.SEt.”...
  • Page 62 LF(R) Series Operation Manual 3 Various Measuring Methods Zero-point setting and tare range setting are important for accurate calculation of statistical values. To delete data, when incorrect data is mistakenly collected for example, refer to Section 3-8-4 “Cancellation of last collected data.” Zero or minus data cannot be collected and “9-Err”...

  • Page 63: Output Of Statistical Operation Results

    3 Various Measuring Methods LF(R) Series Operation Manual 3-8-3 Output of statistical operation results Statistical operation results are collectively output to devices. Set to the statistical operation display. Press the [Function] key when the balance is displaying the weight. Do this before collecting the next data item. Output the statistical operation results.

  • Page 64: Cancellation Of Last Collected Data

    LF(R) Series Operation Manual 3 Various Measuring Methods 3-8-4 Cancellation of last collected data You can only cancel the data collected last. Set to the statistical operation display. Press the [Function] key when the balance is displaying the weight. Do this before collecting the next data item. Set the calculation item to “Number of data items.”...

  • Page 65: Clearing Statistical Operation Results

    3 Various Measuring Methods LF(R) Series Operation Manual 3-8-5 Clearing statistical operation results You can clear all collected data. Note that this operation deletes ALL data. Print statistical operation results as needed before clearing data. Set to the statistical operation display. Press the [Function] key when the balance is displaying the weight.

  • Page 66: Adjusting The Balance

    LF(R) Series Operation Manual 4 Adjusting the Scale 4 Adjusting the Balance 4-1 Adjusting (Calibrating) the Balance Calibrating a balance is also called span adjustment. Be sure to perform span adjustment to ensure highly accurate measurements. Electronic balances are influenced by the acceleration of gravity. For this reason, you should adjust (calibrate) your balance every time you relocate it.

  • Page 67: Span Test With Internal Weight

    4 Adjusting the Scale LF(R) Series Operation Manual Start automatic span adjustment using the internal When “PuSH C” is displayed, press the [Cal] key. The internal weight is activated and starts the weight. span adjustment automatically. The balance display changes to “Aut. CAL,” “CH. 0,”...

  • Page 68: Span Adjustment With External Weight

    LF(R) Series Operation Manual 4 Adjusting the Scale Return to the weight display. Press the [Set] key. The balance returns to the weight display. 4-1-3 Span adjustment with external weight Go to the function setting mode. Press and hold the [Function] key until “Func” is (Refer to Section 2-6 “Basics of Function displayed.

  • Page 69: Span Test With External Weight

    4 Adjusting the Scale LF(R) Series Operation Manual 4-1-4 Span test with external weight Go to the function setting mode. Press and hold the [Function] key until “Func” is (Refer to Section 2-6 “Basics of Function displayed. Settings.”) Go to the span test mode. Press the [Function] key several times to select “8.CA.”...

  • Page 70: Calibrating The Internal Weight

    LF(R) Series Operation Manual 4 Adjusting the Scale 4-2 Calibrating the Internal Weight Use this function to calibrate the internal weight with a weight. You should calibrate the internal weight after the balance has been subjected to a strong impact, for example. This function is only available for the LFR type.
  • Page 71 4 Adjusting the Scale LF(R) Series Operation Manual Unload the weight from the weighing pan. When span adjustment is completed and “on 0” is displayed, unload the weight from the weighing pan. After the weight is unloaded, the balance automatically starts calibration of the internal weight.
  • Page 72 LF(R) Series Operation Manual 4 Adjusting the Scale If there are any problems with results of span adjustment or span tests, the following messages are displayed: (1) “1-Err”: This means that you have used a reference weight that weighs less than 50% of the weighing capacity during span adjustment with an external weight.

  • Page 73: Entering The Instrumental Error Of A Weight For Use

    4 Adjusting the Scale LF(R) Series Operation Manual 4-3 Entering the Instrumental Error of a Weight for Use To adjust (calibrate) the balance more accurately, enter the instrumental error of an external weight to be used for span adjustment or span tests. (Enter the instrumental error in mg.) Go to Function 2 setting mode.

  • Page 74: Se-Cal (Full Automatic Calibration Function)

    LF(R) Series Operation Manual 4 Adjusting the Scale 4-4 Se-CAL (full automatic calibration function) Se-CAL function is composed of two functions. One is Advice CAL, which advises the user to perform calibration by showing blinking “CAL” in the display. “CAL” start blinking when a certain amount of time elapses since the previous calibration or when the temperature changes.

  • Page 75: Repeatability Measurement

    4 Adjusting the Scale LF(R) Series Operation Manual 4-5 Repeatability Measurement Repeatability measurement is a function that takes ten span measurements by placing and removing weights and calculates the standard deviation of the measurement results. There are two methods for repeatability measurement: Automatic Repeatability Measurement (ARM) with internal weight or Semi-Automatic Repeatability Measurement (SARM) with external weight.

  • Page 76: Semi-Automatic Repeatability Measurement (Sarm)

    LF(R) Series Operation Manual 4 Adjusting the Scale To discontinue the measurement, press the [Print] key. 4-5-2 Semi-Automatic Repeatability Measurement (SARM) Go to the function setting mode. Press and hold the [Function] key until “Func” is (Refer to Section 2-6 “Basics of Function displayed.
  • Page 77 4 Adjusting the Scale LF(R) Series Operation Manual Repeat steps 5 and 6. “Cnt.*” is displayed. As steps 5 and 6 are repeated, the number shown in “Cnt.*” increases to 1, 2, 3, and so on. Display the standard deviation. When the number reaches “10,”...

  • Page 78: Easy Res Function (Single-Touch Response Time Change)

    LF(R) Series Operation Manual 4 Adjusting the Scale 4-6 Easy RES Function (single-touch response time change) Easy RES function enables the user to change the response speed very easily. You can change response speed just by pressing [Set] key. By changing the response speed according to the degree of vibration in the place where the balance is installed, you can reduce the display fluctuation and the time spent waiting for the display to stabilize.
  • Page 79 4 Adjusting the Scale LF(R) Series Operation Manual Setting “5A.rE.” to “1” results in the fastest response, which is suitable for use in a place hardly affected by vibration. Setting “5A.rE.” to a larger number up to “7” results in lower response, which is suitable for use in a place significantly affected by vibration.

  • Page 80: Setting The Functions

    LF(R) Series Operation Manual 5 Function Setting 5 Setting the Functions 5-1 Select and Switch of Weighing Units You can set two units (unit A and unit b) and switch between the units. Unit b can only be used in simple weight measurement mode. Unit A can be used in all measurement modes.

  • Page 81: Readability Setting

    5 Function Setting LF(R) Series Operation Manual 5-2 Readability Setting Use this function to set the readability. The larger the readability becomes, the less the balance is affected by external influences. In addition, it takes less time for the balance reading to stabilize.

  • Page 82: Automatic Switching Of Scale Intervals

    LF(R) Series Operation Manual 5 Function Setting 5-3 Automatic Switching of Scale Intervals With this function, the readability of the balance automatically switches between 0.00001 g for gross readout equal to or less than 92.00000 g and 0.0001 g for gross readout over 92.00000 g. Automatic switching between two scale intervals is only available for the LF225DR.

  • Page 83: Turning On/Off The Automatic Switching Of Scale Intervals With A Single Touch

    5 Function Setting LF(R) Series Operation Manual 5-4 Turning ON/OFF the Automatic Switching of Scale Intervals with a Single Touch This function allows you to turn on or off the automatic switch between two scale intervals just by pressing the [Set] key. Automatic switching between two scale intervals is only available for the LF225DR.

  • Page 84: Saving The Container (Tare) Weight

    LF(R) Series Operation Manual 5 Function Setting 5-5 Saving the Container (Tare) Weight Use this function to set a tare range when the balance is turned on using the latest saved tare weight. Use this function when you turn the balance on or off with a sample and tare on the pan.

  • Page 85: Power Setting

    5 Function Setting LF(R) Series Operation Manual 5-6 Power Setting 5-6-1 Automatic backlight-off function This function automatically turns off the backlight if the balance is left untouched in measurement mode for about 3 minutes. Go to the function setting mode. Press and hold the [Function] key until “Func”...

  • Page 86: Date And Time Setting

    LF(R) Series Operation Manual 5 Function Setting 5-7 Date and Time Setting 5-7-1 Time setting Use this function to set the time of the 24 hour clock (hours:minutes:seconds). Open the time view. Press and hold the [Function] key for several seconds. After “Func”...

  • Page 87: Date Setting

    5 Function Setting LF(R) Series Operation Manual 5-7-2 Date setting The last two digits of the western calendar year are displayed for the year. The order in which the year, month, and day appear can be changed using Function 1. Open the date view.

  • Page 88: Time Output

    LF(R) Series Operation Manual 5 Function Setting 5-9 Time Output Use this function to output the current time along with measurement data. Set the time before using this function. Go to the function setting mode. Press and hold the [Function] key until “Func” is (Refer to Section 2-6 “Basics of Function displayed.

  • Page 89: Interval Output Function

    5 Function Setting LF(R) Series Operation Manual 5-10 Interval Output Function Use this function to output data at specified intervals. Set the interval time in “hour:minute:second” form. You can output time with measurement data. To output time, refer to Section 5.9 “Time Output.”...
  • Page 90 LF(R) Series Operation Manual 5 Function Setting Start interval output. Press the [Print] key. After “StArt” is displayed, interval output starts. End interval output. Press the [Print] key. After “End.” is displayed, the balance returns to the weight display. Output stops in the function setting mode. When “6-Err”...

  • Page 91: Id No. Setting

    5 Function Setting LF(R) Series Operation Manual 5-11 ID No. Setting Results of successfully completed span adjustments and span tests can be printed by ISO/GLP/GMP compliant devices. Set the ID number printed with the results. In situations such as when the same model is used, you can assign numbers that allow you to easily manage them.

  • Page 92: Improving The Stability Of The Balance

    LF(R) Series Operation Manual 5 Function Setting 5-12 Improving the Stability of the Balance When the balance is stable, “ ” (stability indicator) appears in the upper left of the display. When displayed values flicker or the stability indicator blinks, this indicates that the balance is being affected by wind or vibration.
  • Page 93 5 Function Setting LF(R) Series Operation Manual Method 2) Change the stability indicator lighting criteria to prevent the stability indicator from blinking. This method does not affect the flickering of displayed values, but affects when the stability indicator lights up. Setting larger values reduces blinking and causes the stability indicator to light up faster.

  • Page 94: Α-Check(Self-Diagnosis Function)

    LF(R) Series Operation Manual 5 Function Setting 5-13 α-Check(self-diagnosis function) α-check function gives the users menu of self-diagnosis of the balance. It is composed of five test items, display test, key test, motor test, check of calibration history, and repeatability test. 5-13-1 Display test Use the display test to check whether all display segments are working properly.

  • Page 95: Key Test

    5 Function Setting LF(R) Series Operation Manual 5-13-2 Key test Use the key test to check whether the keys are working properly. Go to the function 2 setting mode. While pressing the [Zero/Tare] key, press the [Function] key. After “Func2” is displayed, release the keys. ＋...

  • Page 96: Motor Test

    LF(R) Series Operation Manual 5 Function Setting 5-13-3 Motor test Use the motor test to check whether the internal weight is working properly. This function is only available for the LFR type. Go to the function 2 setting mode. While pressing the [Zero/Tare] key, press the [Function] key.

  • Page 97: Span Adjustment History

    5 Function Setting LF(R) Series Operation Manual 5-13-4 Span adjustment history Use this function to display and print the history of span adjustments. The balance saves the history data of the last ten span adjustments with the history numbers “HIS.1” (newest) to “HIS.10”...

  • Page 98: Automatic Repeatability Measurement (Arm)

    LF(R) Series Operation Manual 5 Function Setting 5-13-5 Automatic Repeatability Measurement (ARM) You can conduct an Automatic Repeatability Measurement (ARM) (Section 4-5-1) by using α-check function. This function is only available for the LFR type. Go to the function 2 setting mode. While pressing the [Zero/Tare] key, press the [Function] key.

  • Page 99: Semi-Automatic Repeatability Measurement (Sarm)

    5 Function Setting LF(R) Series Operation Manual 5-13-6 Semi-Automatic Repeatability Measurement (SARM) You can conduct an Automatic Repeatability Measurement (ARM) (Section 4-5-2) by using α-check function. Go to the function 2 setting mode. While pressing the [Zero/Tare] key, press the [Function] key.

  • Page 100: Input/Output To/From External Devices

    6-1-1 Connecting a printer Connect the RS-232C connector of the balance to a printer using the D-SUB9P cable. You can connect the balance to SHINKO DENSHI CSP-160 II printer or standard printer from printer manufacturers. The following setting is required for the printer. Set it by referring to the operation manual of the printer.

  • Page 101: Printing Measurement Results

    6 Input/Output to/from External Devices LF(R) Series Operation Manual Perform the span adjustment or span test. After the span adjustment or span test is successfully completed, the printer executes the print job. While the data is being printed, the balance may seem to be frozen, but wait until printing is completed.

  • Page 102: Connection Of Interface And The External Equipment

    LF(R) Series Operation Manual 6 Input/Output to/from External Devices 6-2 Connection of interface and the external equipment The balance communicates with external devices such as a PC via the RS-232C interface. The RS-232C interfaces equipped on the balance are a type-B USB and a D-SUB9P. Connection with external devices is established with the following specifications: Disconnect the AC adapter of the balance before connecting external devices.

  • Page 103: Examples Of Connection With A Pc

    6 Input/Output to/from External Devices LF(R) Series Operation Manual You can set a tare range or adjust the zero-point from an external device by connecting a contact or a transistor switch between the pin for externally setting a tare range (Pin 9) and the signal ground pin (Pin 5). When doing so, allow at least 400 ms for connection (ON) time (Maximum voltage when the balance is turned OFF: 15 V, sink current when it is turned ON: 20 mA).

  • Page 104: Connecting A Type-B Usb Connector To A Pc

    LF(R) Series Operation Manual 6 Input/Output to/from External Devices 6-2-3 Connecting a type-B USB connector to a PC Download the driver suitable for the OS installed on your PC from the following URL:http://www.ftdichip.com/ Connect the AC adapter to the balance and turn the balance on. Connect the balance to the PC using a USB cable.

  • Page 105: Interface Specifications

    6 Input/Output to/from External Devices LF(R) Series Operation Manual 6-2-4 Interface specifications Transmission Serial transmission, Start-stop synchronization system Transmission 1200/2400/4800/9600/19200 bps rate Transmission ASCII codes (8/7 bits) codes Signal level Compliant with EIA RS-232C HIGH level (data logic 0): +5 to +15 V LOW level (data logic 1): −5 to −15 V Bit configuration Start bit: One bit...

  • Page 106: Communication Data And Commands

    LF(R) Series Operation Manual 6 Input/Output to/from External Devices 6-3 Communication Data and Commands The RS-232C interface exchanges data with external devices as follows: 6-4 Output Data The five formats “6-digit numeric,” “7-digit numeric,” “extended 7-digit numeric,” “special format 1” and “special format 2” are available. Select a format by performing the following steps: Go to the function setting mode.

  • Page 107: Data Format

    6 Input/Output to/from External Devices LF(R) Series Operation Manual 6-4-1 Data format 7-digit numeric format Consists of 15 characters including terminators (CR=0DH/LF=0AH), to which a parity bit can be added. Extended 7-digit numeric format This is an extended version of the 7-digit numeric format and is different from the 7-digit numeric format in that: the data length can be set to seven bits, and the stop bit length can be one bit.

  • Page 108: Meanings Of Data

    LF(R) Series Operation Manual 6 Input/Output to/from External Devices 6-4-2 Meanings of data [P1] (one character) Indicates the polarity of data. Code Description Zero or positive data − Negative data [D1 to D7 (or D8)] (seven or eight characters) Stores numeric data. D1 to D7 (D8) Code Description...
  • Page 109 6 Input/Output to/from External Devices LF(R) Series Operation Manual [U1, U2] (two characters) Indicates the unit used to show numeric data. [S1] (one character) Indicates the judgment result when the limit function is used. Code Description Remarks Below (LO) 1- or 2-point scale Appropriate (OK) Above (HI) Rank 1...
  • Page 110 LF(R) Series Operation Manual 6 Input/Output to/from External Devices [S2] (one character) Indicates the status. Code Description Data stable *1 Data unstable *1 Data error *2 (Indicates that data other than S2 is invalid.) (SP) No status specified *1: This value is independent of data if the data is independent of whether the weighing condition is stable or not, such as cumulative values and unit weights.

  • Page 111: Communication Format Examples

    6 Input/Output to/from External Devices LF(R) Series Operation Manual 6-4-3 Communication format examples 7-digit numeric format 3000.1 g/No data type specified/Data stable (SP) (SP) +10.05 mom/Gross/Data unstable 250 pcs./Cumulative value/Data stable (SP) 6-4-4 Special formats Data formats Special format 1 Consists of 16 characters including terminators (CR=0DH/LF=0AH).
  • Page 112 LF(R) Series Operation Manual 6 Input/Output to/from External Devices [U1, U2, U3] (three characters) Indicates the unit used to show numeric data. For output when the balance is unstable, the unit (three characters) becomes a space (20H). Communication format examples for special format 1 123.4567 g/No data type specified/Data stable Scale overload “o-Err”...
  • Page 113 6 Input/Output to/from External Devices LF(R) Series Operation Manual Meanings of data in special format 2 [S1 to S3] (three characters) Indicates stable/unstable. Meaning code code code (SP) Stable (SP) Unstable [SP, D1 to D10] Stores numeric data. D1 to D10 Code Description 0 to 9...
  • Page 114 LF(R) Series Operation Manual 6 Input/Output to/from External Devices Communication format examples for special format 2 123.4567 g/No data type specified/Data stable Scale overload “o-Err” In the case of scale underload “u-Err,” “-” is output as the third character. - 103 -...

  • Page 115: Input Commands

    6 Input/Output to/from External Devices LF(R) Series Operation Manual 6-5 Input Commands Use these commands to control the balance from an external device. (1) Tare range setting command, (2) Output control setting command, (3) Measurement mode setting command, (4) Date output request and time output request command, (5) Interval time setting command, (6) Span adjustment and span test command, and (7) Limit value setting command 6-5-1 Procedure for transmission...

  • Page 116: Command Format

    LF(R) Series Operation Manual 6 Input/Output to/from External Devices 6-5-3 Command format An input command consists of 4 characters including terminators (CR/LF). 6-5-4 Format of each command Pay attention to the difference between O (the letter “o”) and 0 (zero). (1) Tare range setting (zero-point adjustment) command Code (C1) Code (C2)
  • Page 117 6 Input/Output to/from External Devices LF(R) Series Operation Manual Code (C1) Code (C2) Description Response Output once when the balance is stable. Stop output when unstable. Output once when the balance has restabilized (the output includes zero) even if it is not reloaded. Output once when the balance is stable.
  • Page 118 LF(R) Series Operation Manual 6 Input/Output to/from External Devices Relationships between weighing modes and mode settings Gravimeter/Statistical Simple weight Percentage Unit Mode Counting measurement weighing conversion operation function Mode 1 Weight Weight Weight Weight Error measuring measuring measuring measuring Mode 2 Gross weight Counting Percentage Coefficient...
  • Page 119 6 Input/Output to/from External Devices LF(R) Series Operation Manual (5) Interval (output) time setting command Code (C1) Code (C2) Description Value Response A00: Successful completion Interval time Interval E01: Command setting time error E02: Interval time setting error * Delimit the command, hour, minute and second with commas “,” (2CH), for example, “IA,hh,mm,ss.”...
  • Page 120 LF(R) Series Operation Manual 6 Input/Output to/from External Devices (7) Limit value setting command Code (C1) Code (C2) Description Value Response First set point/ Lower limit Second set point/ Upper limit A00: Successful completion E01: Command Limit value Reference error E02: Value setting error Third set...

  • Page 121: Response

    6 Input/Output to/from External Devices LF(R) Series Operation Manual 6-6 Response Upon receiving an input command, the balance sends out a response. You can select the response format of either the [“A00”/“Exx”] format or the [ACK/NAK] format. The [“A00”/“Exx”] format responses are described in the explanation of “input commands” in the previous section.

  • Page 122: Troubleshooting

    LF(R) Series Operation Manual 7 Troubleshooting 7 Troubleshooting 7-1 Error Messages Message Cause Remedy • Unload the sample and weigh it o-Err The weight of the sample is more than the weighing capacity. in parts. • Replace the tare with a lighter one.
  • Page 123 7 Troubleshooting LF(R) Series Operation Manual Message Cause Remedy 1-Err The reference weight used during Use a weight that is as close to span adjustment or span test with an the weighing capacity as external weight is far less than 50% of possible.
  • Page 124 LF(R) Series Operation Manual 7 Troubleshooting Message Cause Remedy E1-Err • Unplug the AC adapter from No input is being sent from the weight sensor. the receptacle and then turn the power on again. • If this error occurs again, the sensor may be malfunctioning.

  • Page 125: Troubleshooting

    7 Troubleshooting LF(R) Series Operation Manual 7-2 Troubleshooting Problem Cause Remedy Nothing is displayed even The AC adapter is not • Check that the AC adapter when the balance is connected. is connected. powered on. • If nothing is displayed even if the AC adapter plug is properly connected, the electric...
  • Page 126 LF(R) Series Operation Manual 7 Troubleshooting Problem Cause Remedy The weight indication The balance may have been The balance may be contains an error even after affected by an external affected by an external it is calibrated. influence such as wind and influence such as wind and vibration during calibration.
  • Page 127 7 Troubleshooting LF(R) Series Operation Manual Problem Cause Remedy referring to their operation Communication conditions manuals. do not match those of the external device. Check output by: Initialize the function settings by referring to Section 7-3 “Initializing” or Function Setting List. Then, set communication conditions 1,200 bps, 8-bit data, 2-bit stop bit, and no...

  • Page 128: Initializing

    LF(R) Series Operation Manual 7 Troubleshooting 7-3 Initializing The settings of the balance can be initialized by following these steps: Go to the function 2 setting mode. While pressing the [Zero/Tare] key, press and hold the [Function] key. After “Func2” is displayed, release the keys.

  • Page 129: Maintenance

    7 Troubleshooting LF(R) Series Operation Manual 7-4 Maintenance When performing maintenance on the balance, be careful of the following: 7-4-1 For heavy dirt It is easy to remove the right and left doors of the windshield, and the weighing pan, the pan base, the windshield ring and the bottom plate in the weighing chamber, so that you can clean the balance.

  • Page 130: How To Clean The Balance

    LF(R) Series Operation Manual 7 Troubleshooting Removing the weighing pan, the pan base, the windshield ring and the bottom plate in the weighing chamber Lift the windshield ring. At the same time, you can remove the pan base and the weighing pan.
  • Page 131 7 Troubleshooting LF(R) Series Operation Manual (Memo) - 120 -...

  • Page 132: Appendixes

    LF(R) Series Operation Manual Appendixes Appendixes Appendix 1 Function Setting List - 121 -...
  • Page 133 Appendixes LF(R) Series Operation Manual - 122 -...
  • Page 134 LF(R) Series Operation Manual Appendixes - 123 -...
  • Page 135 Appendixes LF(R) Series Operation Manual - 124 -...
  • Page 136 LF(R) Series Operation Manual Appendixes - 125 -...
  • Page 137 Appendixes LF(R) Series Operation Manual - 126 -...
  • Page 138 LF(R) Series Operation Manual Appendixes - 127 -...
  • Page 139 Appendixes LF(R) Series Operation Manual - 128 -...
  • Page 140 LF(R) Series Operation Manual Appendixes - 129 -...

  • Page 141: Appendix 2 Measurement Mode List

    Appendixes LF(R) Series Operation Manual Appendix 2 Measurement Mode List In each weighing mode, pressing the [Function] key switches the function displayed. Displayable functions differ between modes. The additional functions usable concurrently with each function also differ. Displayed functions switched with each press of Additional function usable Remarks the [Function] key...

  • Page 142: Appendix 3 Iso/Glp/Gmp Compliant Printing

    LF(R) Series Operation Manual Appendixes Appendix 3 ISO/GLP/GMP Compliant Printing When span adjustment, span test or α-check is successfully completed, the balance outputs the following: The “ERR” and the instrumental error line is output when the instrumental error has been entered. Span adjustment with internal weight Span adjustment with external weight - 131 -...
  • Page 143 Appendixes LF(R) Series Operation Manual Span test with internal weight Span test with external weight - 132 -...
  • Page 144 LF(R) Series Operation Manual Appendixes Calibration of internal weight Measurement data: Header Measurement data: Footer - 133 -...
  • Page 145 Appendixes LF(R) Series Operation Manual α-check: Display test α-check: Key test - 134 -...
  • Page 146 LF(R) Series Operation Manual Appendixes α-check: Motor test Span adjustment history - 135 -...

  • Page 147: Appendix 4 Specifications

    Appendixes LF(R) Series Operation Manual Appendix 4 Specifications Appendix 4-1 Basic Specifications Gram (g) Parts counting Percentage Model Pan size Minimum unit Max (g) d (g) Weight limit (g) weight (g) LF124(R) 0.0001 0.0001 0.01 LF224(R) 0.0001 0.0001 0.01 φ80 0.00001 LF225DR 0.00001...

  • Page 148: Appendix 4-2 Functional Specifications

    RS-232C compliant output is equipped as standard. SHINKO DENSHI standard format Type-B USB, D-SUB9P male (RS-232C output, external tare range setting port, bidirectional) Supported printer: CSP-160 II (SHINKO DENSHI) Span adjustment Functions selectable via settings Automatic span adjustment with internal weight (for LFR type...

  • Page 149: Appendix 4-3 Weighing Capacity And Readability By Unit

    Appendixes LF(R) Series Operation Manual Appendix 4-3 Weighing Capacity and Readability by Unit Model LF124(R) LF224(R) LF225DR LF135R Unit 120000 220000 92000 220000 130000 0.01 0.01 gram (g) 0.0001 0.0001 0.00001 0.0001 0.00001 1100 1100 carat (ct) 0.0005 0.001 0.0001 0.001 0.0001 ounce (oz)

  • Page 150: Appendix 4-4 Unit Conversion Table

    LF(R) Series Operation Manual Appendixes Appendix 4-4 Unit Conversion Table - 139 -...

  • Page 151: Appendix 4-5 Outline Drawings

    Appendixes LF(R) Series Operation Manual Appendix 4-5 Outline Drawings - 140 -...

  • Page 152: Index Of Terms

    LF(R) Series Operation Manual Index for Terms Index of Terms [ A ] α-check (self-diagnosis function)... 83 Interface..........94 Addition function......37, 68 Interval output function......78 Advice CAL ........... 63 ISO/GLP/GMP compliant form ....89 Automatic backlight-off ......74 [ J ] Automatic repeatability Judgment using definite values.....
  • Page 153 Index for Terms LF(R) Series Operation Manual Stability..........81 Unit ............69 Statistical operation function....49 Unit conversion ......30, 37, 40 USB ............93 [ T ] [ W ] Tare range setting ......18, 73 Terminator ........... 105 Weighing capacity.........
  • Page 154 LF(R) Series Operation Manual Index for Terms (Memo) き - 143 -...

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