Toshiba LQ500B Operation Manual
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Toshiba LQ500B Operation Manual

Density meter
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6 F 8 A 1 0 0 1
OPERATION MANUAL
DENSITY METER
TYPE LQ500B

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  • Page 1 6 F 8 A 1 0 0 1 OPERATION MANUAL DENSITY METER TYPE LQ500B...
  • Page 2 Carefully read this manual before using the meter for efficient and safe operation. Always keep the manual in a place where you can easily access. LQ500B has two types. They are a standard type and a UL/CUL hazardous locations type. LQ500B is enclosed equipment and includes two parts, Detector part and Converter part.

  • Page 3: Safety Precautions

    6 F 8 A 1 0 0 1 SAFETY PRECAUTIONS Important information is shown on the product itself and in the operation manual to protect users from bodily injuries and property damages, and to enable them to use the product safely and correctly.
  • Page 4 SAFETY PRECAUTIONS (Continued) For a safe use of the LQ500B Density Meter, take precautions described in this manual and observe ordinances in making the installation and operation. Toshiba is not responsible for any accident arising from the use that does not conform to above.
  • Page 5 6 F 8 A 1 0 0 1 SAFETY PRECAUTIONS (Continued) Yellow CAUTION Avoid installing the meter in Install the meter in a place ■ ■ any of the following places: easier for operation, maintenance and inspection. Otherwise, a fire or equipment In addition, when you place the breakdown or failure can occur.
  • Page 6 6 F 8 A 1 0 0 1 SAFETY PRECAUTIONS (Continued) WIRING PRECAUTIONS WARNING Yellow ■Be sure to install a fuse and a ■Be sure to ground the switch to disconnect the equipment using a grounding equipment from the power wire separate from those used source.
  • Page 7 6 F 8 A 1 0 0 1 SAFETY PRECAUTIONS (Continued) PRECAUTIONS REGARDING MAINTENANCE, INSPECTION, AND PARTS REPLACEMENT WARNING Yellow ■Be sure to set the power ■Be sure to set the power switch on the equipment to the switch on the equipment to the OFF position before doing OFF position before replacing maintenance or inspection...
  • Page 8 This product is not designed or manufactured for the purpose of applying to the systems, such as shown below, which require the level of safety that directly concerns with human life. When your use includes potential applications in those systems, contact Toshiba for consultation.

  • Page 9: [Note] Sign

    6 F 8 A 1 0 0 1 [NOTE] Sign When an explanation is made in the text regarding the Safety Precautions, the [NOTE] sign shown below appears in the left margin of a page. The [NOTE] gives you directions to follow in the following instances.

  • Page 10: Important Notes Of Use Of Lq500B Density Meter

    LQ500B Density Meter and safely use it over a long period of time.  Toshiba is not held responsible for any fault or result caused by not observing the precautions described in this manual or by not observing the laws or regulations in installing or using the product.

  • Page 11: About Disposal

    Otherwise, the density meter may be broken, resulting in malfunction or fault. [NOTE] Before returning your meter to Toshiba for repair, etc., make sure to inform us about the measured matter remaining in the density meter pipe, including whether it is dangerous or not to touch the material and then clean the meter so that no measured matter remains in its pipe.

  • Page 12: Table Of Contents

    6 F 8 A 1 0 0 1 Contents SAFETY PRECAUTIONS ....................... 2 [NOTE] SIGN ........................... 8 IMPORTANT NOTES OF USE OF LQ500B DENSITY METER ..........9 OVERVIEW ........................14 Principle of Measurement....................14 Features ..........................15 2. UNPACKING ........................16 Standard Components ......................
  • Page 13 6 F 8 A 1 0 0 1 Contents Procedures for Preparing and Running ................58 Preparations before Turning on Power ................59 Power on and Preparations for Measuring ................. 59 6.3.1 Turning power on ....................59 6.3.2 Verifying and setting measurement conditions ............60 Zero Calibration ........................
  • Page 14 6 F 8 A 1 0 0 1 Contents 10.3.3 Cautions in using the change-rate limit factor ............90 10.3.4 Setting the change-rate limit ................... 91 10.4 Electric Conductivity Correction ..................92 10.4.1 Conductivity correction .................... 92 10.5 Additives Correction Factor ....................93 10.5.1 Additive Correction Function ..................

  • Page 15: Overview

    6 F 8 A 1 0 0 1 1 OVERVIEW The LQ500B Density Meter measures the density of a substance that flows through a pipe by means of a phase difference method using microwaves. This method is little affected by the presence of contamination. It uses no moving mechanical parts or mechanism that is often used in other measuring methods for cleaning, sampling, or defoaming.

  • Page 16: Features

    (6) Being of the flow-through type, the new method is capable of continuous measurement. As others, the new density meter model LQ500B boasts of the following features. (7) Can easily change the measurement range. (8) The operation is simple because complex processings such as density calculation and correction, etc.

  • Page 17: Unpacking

    6 F 8 A 1 0 0 1 2. UNPACKING Check items by the following list and table at unpacking. 2.1 Standard Components (1) Density Meter : 1 unit (One unit each of Detector and Converter,) (2) Standard accessories : 1 unit (One set of cables,Fuse,Operation manual) <Supplementary Explanation>...

  • Page 18: Installation

    6 F 8 A 1 0 0 1 3. INSTALLATION 3.1 Precautions for Installation WARNING ■The meter is heavy. To move ■Do not operate where there is the meter for relocation or a possibility of leakage of installation, a qualified operator flammable or explosive gas.
  • Page 19 6 F 8 A 1 0 0 1 CAUTION Avoid installing the meter in any Install the meter in a place ■ of the following places: easier for operation, maintenance and inspection. Otherwise, a fire or equipment In addition, when you place breakdown or failure can occur.

  • Page 20: Installation Location

    6 F 8 A 1 0 0 1 3.2 Installation Location [NOTE] ◆ Determine an indoor installation place in accordance with the following instructions. (1) Choose a place that is free of vibrations and corrosive gasses, and has ample space for maintenance.

  • Page 21: Installation And Piping

    6 F 8 A 1 0 0 1 3.3 Installation and Piping Figures 3.3.1 through 3.3.4 are examples of density meter installation. [NOTE] (1) Install the meter in a place where density distribution is uniform. (2) Avoid such a location where the measured matter will settle and build up on the bottom of the density meter.

  • Page 22: Vent Valve

    6 F 8 A 1 0 0 1 [NOTE] ◆Sampling valve: Used to extract fluids for manual analysis. Install this valve to the side of the pipe in the case of horizontal installation. It is recommended that a 1-inch ball valve be installed to the side of the pipe. ◆Zero point water valve: Used to supply drinking water (density or consistency 0%) to the detector pipe for zero point adjustment.
  • Page 23 6 F 8 A 1 0 0 1 Stop valve Stop valve Air release valve Zero point water valve Zero water piping Density meter Bypass piping Drain valve Drain Stop valve Direction of flow Upward Fig.3.3.4 Meter mounted vertically [NOTE] When you lift the meter using a lifting wire for relocation, installation or for other purposes, use the wire so that the wire does not touch the RF section of the density meter.

  • Page 24: Precautions For Wiring

    6 F 8 A 1 0 0 1 3.4 Precautions for wiring WARNING Yellow ■Be sure to install a fuse and a ■Be sure to ground the switch to disconnect the equipment using a grounding equipment from the power wire separate from those used source.

  • Page 25: Wiring

    6 F 8 A 1 0 0 1 3.5 Wiring Figure 3.5.1 on the next page shows connections to the density meter and the external units. Figure 3.5.2 shows wiring assignment to a converter terminal. Refer to these figures for correct wiring.
  • Page 26 6 F 8 A 1 0 0 1 Converter Power 100 to 240VAC, 50/60Hz CVVS section Ground (PE) (Ground resistance: 100 or less) External sync contact input (Contact capacity: 24VDC, 1A or more) COM1 Density meter error or maintenance-in-progress contact output Communication cable (Contact capacity: 125VAC, 0.1A)
  • Page 27 6 F 8 A 1 0 0 1 Terminal block +24V Communication Power supply Figure3.5.3 Terminals arrangement inside the RF section [NOTE] For connection between the converter and the RF section, connect cables according to the band marks attached to the power cable (1) and the communication cable (2). Erroneous connection can cause a failure or an erroneous operation.

  • Page 28: Part Names And Functions

    6 F 8 A 1 0 0 1 4. PART NAMES AND FUNCTIONS The detector is integrated with the converter in LQ500B Density meter. 4.1 Detector RF section (2) Applicator section (1) Main pipe (3) Temperature detector Fig.4.1.1 Detector  27 ...
  • Page 29 (1) Main pipe Refers to the part connected to the pipe line of a measured object. FLANGE is JIS 10K or equivalent. Contact Toshiba for connections other than this method (shown left). (2) Applicator mount The applicators (antenna) for transmitting and receiving microwaves are built inside. The applicator on the front in Fig.4.1 is for transmitting and the rear is for receiving.

  • Page 30: Converter

    6 F 8 A 1 0 0 1 4.2 Converter Figure 4.2 shows the converter with its door open. (3) [COM] (4) [MEASURE] Indicator indicator (5) Display (6) Setting keys (1) Power switch (2) Fuse FUSE 2A(T) 250V (7) Terminal block (8) Cable gland Fig.4.2 Convertor ...

  • Page 31: Power Switch

    6 F 8 A 1 0 0 1 [NOTE] Install the converter cover when operating the density meter. In addition, tighten securely the screws of the converter cover. If screws are not tightened enough, moisture, dust or other particles enters the converter and can cause a converter failure. (1) [POWER] switch The power switch for the density meter.

  • Page 32: Parameter And Set Values

    6 F 8 A 1 0 0 1 5.1 Parameter and Set Values The set values and setting ranges by parameter at the time of factory shipment are listed in Table 5.1.1 below. Table 5.1.1 Parameters and Set Values (No.1) Measurement Condition Parameter Unit Ex-factory Set Value...
  • Page 33 6 F 8 A 1 0 0 1 Table 5.1.1 Parameters and Set Values (No.2) Ex-factory Set Measurement Condition Parameter Unit Setting Range Values (Without  Availability of additives correction (AF) loading material OFF / ON correction)  Display density type of Total TOTAL / MAIN additives correction (Ad)

  • Page 34: Menus And Operations

    6 F 8 A 1 0 0 1 5.2 Menus and operations Operations should be done with five keys for setting, in combination with the display. This section shows menus and operations. 5.2.1 Main menu Main menu appears when the screen changes from Standard Screen to the Density Value Extended Display Screen after the converter power is turned on and the SET key is pressed once.

  • Page 35: Setting Keys

    6 F 8 A 1 0 0 1 5.2.2 Setting keys Five setting keys are available. The basic methods for using them are described in Table 5.2.2. For specification information, please refer to their respective operating procedures. Table 5.2.2 Basic Methods for Using Operation Keys Setting Notation in Basic Use...

  • Page 36: Menu Display

    6 F 8 A 1 0 0 1 5.2.3 Menu display The menu display of the converter display section has a hierarchical structure as shown in Table 5.2.3. Note: Occasionally using some abbreviated terms as well, actual displays differ from Table 5.2.3. For details, refer to Section 5.2.4.
  • Page 37 6 F 8 A 1 0 0 1 Table 5.2.3 Menu Display (2) Menu 1 Menu 2 Menu 3 Menu 4 Setting Parameter Upper density measurement range Setting the upper density measurement range menu setting (UR) (UR) Lower density measurement range Setting the lower density measurement range (LR) (LR)
  • Page 38 6 F 8 A 1 0 0 1 Table 5.2.3 Menu Display (3) Menu 1 Menu 2 Menu 3 Menu 4 Setting Additives Availability of additives correction Selecting the availability of additives menu correction (AF) correction (AF) Display density type (Ad) Selecting the display density type (Ad) Output density type (Ac) Displaying the output density type (Ac)

  • Page 39: Monitoring Menu Display And Operating Procedures

    This is the version information displayed during LQ500 Ver.*.** initialization executed immediately after power is Copyright turned on. TOSHIBA 2020-2021 The screen automatically changes to the next All Rights Reserved. screen when initialization is completed. NOTE） Do not press the button until the screen changes to the next screen.

  • Page 40: Setting Menu Display And Operating Procedures

    6 F 8 A 1 0 0 1 5.2.5 Setting menu display and operating procedures 1: MONITORING MENU 2: SETTING MENU 3: MEASURING MODE Move the cursor to "2" with [→] key, and press [SET] key. [ESC] (Previous Menu) When [2: SETTING MENU] is selected, the density Test output will be output signal and the density display are hold in the valid.

  • Page 41: Measuring Mode Display And Operating Procedures

    6 F 8 A 1 0 0 1 5.2.6 Measuring mode display and operating procedures 1: MONITORING MENU 2: SETTING MENU 3: MEASURING MODE Move the cursor to "3" with [→] key, and press [SET] key. [ESC] (Previous Menu) OP: OPERATION MODE OP: OPERATION MODE Press the SET key to set.
  • Page 42 6 F 8 A 1 0 0 1 [DN] (Pre. menu) a: DENSITY LINE SLOPE The set value of "density line slope" of the DATA: 0.0840 arithmetic expression for calculating the density [ESC] from the phase measurement data, etc. can be verified.
  • Page 43 6 F 8 A 1 0 0 1 [DN] (Pre. menu) The set value of the moving average times can be verified. ma: AVERAGING TIMES DATA: 1 [ESC] (Previous [ESC] RETURN Menu) [DN] [UP] (Pre. menu) (Next menu) dx: CHANGE-RATE LIMIT The variation width (%TS) permitted in the change-rate limit DATA: 0.00 function can be verified.

  • Page 44: Measured Values Display And Operating Procedures

    6 F 8 A 1 0 0 1 5.2.8 Measured values display and operating procedures 1: READ PARAMETERS 2: MEASURED VALUES 3: SELF-DIAGNOSIS [ESC] Move the cursor to "2" with [→] key, and press [SET] key to (Previous select [ 2:MEASURED VALUES] Menu) It is possible to verify the measured phase value (and MEASURED VALUES *...
  • Page 45 6 F 8 A 1 0 0 1 [DN] (Pre. menu) F: MICROWAVE COEF. The micro wave signal constant can be verified. DATA: 1910 Normally, the value is 1825 to 1950. [ESC] (Previous [ESC] RETURN Menu) [DN] [UP] (Pre. menu) (Next menu) G: RF DATA.

  • Page 46: Parameter Setting Display And Operating Procedures

    6 F 8 A 1 0 0 1 5.2.10 Parameter setting display and operating procedures 5: SET PARAMETERS 6: ZERO CALIBRATION 7: SPAN CALIBRATION 8: ANGLE ROTATION Move the cursor to "5" with [→] key, and press [SET] key to select[ 5:SET PARAMETERS] [SET](Set) UR: UPPER RANGE UR: UPPER RANGE...
  • Page 47 6 F 8 A 1 0 0 1 [DN] (Pre. menu) dt: DELAYED SYNC.TIME dt: DELAYED SYNC.TIME [SET](Set) DATA: 0.5 RANGE: 0.1-99.9 min [SET] CHANGE DATA: 00.5 [SET](Fix) [ESC] [ESC] RETURN [SET] SET, [ESC] CANCEL (Previous [ESC](Cancel) Menu) In external synchronized operations, the delayed time from when the [DN] [UP] external contact input is turned ON until the measurement starts is set.
  • Page 48 6 F 8 A 1 0 0 1 [DN] (Pre. menu) dx: CHANGE RATE LIMIT dx: CHANGE RATE LIMIT [SET](Set) RANGE: 0.00-9.99  DATA: 0.00 [ESC] [SET](Fix) DATA: 0.00 [SET] CHANGE (Previous [SET] SET, [ESC] CANCEL [ESC](Cancel) [ESC] RETURN Menu) If there is a signal of sharp variation, the change-rate limit function [DN] [UP]...

  • Page 49: Zero Calibration Display And Operating Procedures

    (Pre. menu) (Next menu) Span calibration can be performed for samples with different concentrations by inputting both manual C1: DensityMultiplier analysis and LQ500B readings. The density multiplier C1 and density intercept b are DATA: 1.000 set automatically. [ESC] [SET] CHANGE...
  • Page 50 6 F 8 A 1 0 0 1 5.2.13 Phase angle rotation correction display and operating procedures 5: SET PARAMETERS 6: ZERO CALIBRATION 7: SPAN CALIBRATION 8: ANGLE ROTATION Move the cursor to "8" with [→] key, and press [SET] key to select [8:ANGLE ROTATION] [SET](Set) UH: UPPER ANGLE...

  • Page 51: Linearize/Conductity Correction Display And Operating Procedures

    6 F 8 A 1 0 0 1 5.2.14 Linearize/conductity correction display and operating procedures 9: LINEARIZ/CNDUCTVTY 10: ADDITIVES CORRECT 11: OTHERS Move the cursor to "9" with [→] key, and press [SET] key to select [ 9:LINEARIZ/CNDUCTVTY] LA: DENSITY A LA: DENSITY A [SET](Set) RANGE: 0.00-99.99...
  • Page 52 6 F 8 A 1 0 0 1 [DN] (Pre. menu) [SET](Set) EI: EC COMP.SELECTN. EI: EC COMP.SELECTN. MODE: OFF MODE: ON/OFF [SET](Fix) [SET] CHANGE DATA: OFF [ESC] [ESC] RETURN [SET] SET, [ESC] CANCEL [ESC](Cancel) (Previous Menu) [UP] [DN] (Next menu) (Pre.

  • Page 53: Additives Correction Display And Operating Procedures

    6 F 8 A 1 0 0 1 5.2.15 Additives correction display and operating procedures 9: LINEARIZ/CNDUCTVTY 10: ADDITIVES CORRECT 11: OTHERS Move the cursor to "10" with [→] key, and press [SET] key to select [10:ADDITIVES CORRECT ] [SET](Set) AF: ADDITIVES COMP.
  • Page 54 6 F 8 A 1 0 0 1 [DN] (Pre. menu) [SET](Set) Ap: PARAMETER SET NO. Ap: PARAMETER SET NO. DATA: 01 [SET](Fix) RANGE: 1 - 10 [SET] CHANGE DATA: 01 [ESC] [ESC](Cancel) [ESC] RETURN [SET] SET, [ESC] CANCEL (Previous Menu) Ten parameter sets ( tables for each brands) can be registered for additives correction.
  • Page 55 6 F 8 A 1 0 0 1 [DN] (Pre. menu) [SET](Set) s5: ADDITIVE SENS. s5: ADDITIVE SENS. DATA: 0.00 RANGE: -9.99 - 9.99 [SET](Fix) [SET] CHANGE DATA: 0.00 [ESC] [ESC] RETURN [SET] SET, [ESC] CANCEL (Previous [ESC](Cancel) Menu) [DN] [UP] (Pre.

  • Page 56: Other Menus Display And Operating Procedures

    6 F 8 A 1 0 0 1 5.2.16 Other menus display and operating procedures 9: LINEARIZ/CNDUCTVTY 10: ADDITIVES CORRECT 11: OTHERS Move the cursor to "11" with [→] key, and press [SET] key to select [ 11:OTHERS] [SET](Set) ho: 4-20mA IN [EXT] ho: 4-20mA IN [EXT] DATA: 4mA RANGE: LAST/4mA/TEST...
  • Page 57 6 F 8 A 1 0 0 1 [DN] (Pre. menu) C4: DensityMultiplier [SET](Set) C4: DensityMultiplier RANGE: 0.000-9.999 DATA: 1.000 [SET](Fix) DATA: 1.000 [SET] CHANGE [ESC] [ESC](Cancel) [SET] SET, [ESC] CANCEL [ESC] RETURN (Previous Menu) [DN] [UP] (Pre. menu) (Next menu) NA: N AUTO ADJUSTMENT [SET](Set) NA: N AUTO ADJUSTMENT...
  • Page 58 6 F 8 A 1 0 0 1 [DN] (Pre. menu) BL: BLECONNECT ON/OFF [SET](Set) BL: BLECONNECT ON/OFF MODE: ON/OFF DATA: OFF [SET](Fix) DATA: OFF [SET] CHANGE [ESC] [ESC](Cancel) [SET] SET, [ESC] CANCEL [ESC] RETURN (Previous Menu) This screen is displayed only for models [DN] [UP] equipped with wireless communication...

  • Page 59: Operations

    6 F 8 A 1 0 0 1 6. OPERATIONS 6.1 Procedures for Preparing and Running Make preparations and perform operations, that is, density measurements, in accordance with the following procedure. Verifying the piping See 6.2(1) Verifying the valve closure See 6.2(2) Verifying the cable connection See 6.2(3)

  • Page 60: Preparations Before Turning On Power

    6 F 8 A 1 0 0 1 6.2 Preparations before Turning on Power (1) Check piping Check piping and ensure that there are no loose nuts and bolts, or missing gaskets. Make sure that the density meter is properly connected in the pipeline. See the section 3.3, Installation and Piping.

  • Page 61: Verifying And Setting Measurement Conditions

    [NOTE] “10 VARIOUS FUNCTION” describes various functions of the Density Meter LQ500B. If necessary, make additional settings for using these functions appropriately. (2) Verifications at the time of normal power-ON In the event that measurement conditions of the converter are already set with the operation not being the first one since installation, verify the set value while referring to (1).

  • Page 62: Zero Calibration

    6 F 8 A 1 0 0 1 6.4 Zero Calibration All the density meters are calibrated for zero point [zero point phase (  ) and zero point water temperature (T ) ] at the time of shipment and parameters are set correctly. You do not need to calibrate the meter for zero point before using it at site.
  • Page 63 6 F 8 A 1 0 0 1 Clean inside of the pipeline where the density meter is installed by repeating Steps (7) and (8) until the water density can be said to be zero against the density of the object fluid. (It is not necessary to make the water clean and transparent.) (9) Fill up the detector pipe with zero water After cleaning the pipeline where the density meter is installed, close the drain valve, and fill it...

  • Page 64: Span Calibration

    6 F 8 A 1 0 0 1 6.5 Span Calibration 6.5.1 Span Calibration (standard) Span calibration is for adjusting the readings of the density meter to the values determined by manual (off-line) analysis. For information on the converter operation and the display regarding span calibration, please refer to Subsection 5.2.12.
  • Page 65 6 F 8 A 1 0 0 1 (5) Setting the density multiplier (5-1) Switching to the setting mode (see Subsection 5.2.5) First of all, press the [ESC] key of the converter several times (normally once although this varies with the operation status). Next, use the [→] key to move the display indicator cursor to the menu number "2"...

  • Page 66: 2-Point Span Calibration

    Prepare two samples (density 1, density 2) with different density. Enter the data of the manually analyzed density (X1, X2) and the density readings (X'1, X'2) of the LQ500B of each sample. Updates the density multiplier (C) and density intercept (b) from the input data. If the density multiplier (C) and density intercept (b) after two-point span calibration deviate from the following range, the two-point calibration result is not reflected.

  • Page 67: Operation

    6 F 8 A 1 0 0 1 6.6 Operation (1) Startup (see Subsection 5.2.5) When the power is turned ON, the menu setup is automatically changed to the measuring mode (the state of "1: MONITORING MENU"), thus starting the density measurement. If the meter is in setting mode (the state of "2:SETTING MENU"), the density measurement operation is started by pressing the [ESC] key several times (varying between one to three times depending on the operation status) and thus pulling the menu setup out of the setting mode.

  • Page 68: External Synchronized Operation

    6 F 8 A 1 0 0 1 6.7 External Synchronized Operation This operation mode is used in the event that the measured matter does not flow continuously or the interior of the detector is temporarily left empty due to the intermittent operation of the shifting pump to the pipe line on which the density meter is installed.

  • Page 69: Setting The External Synchronized Operation

    6 F 8 A 1 0 0 1 6.7.2 Setting the external synchronized operation (1) Setting the delayed time (see Subsection 5.2.10) (1-1) Switching to the setting mode (see Subsection 5.2.5) First of all, press the [ESC] key of the converter several times (normally once although this varies with the operation status) to return to the initial menu display.
  • Page 70 6 F 8 A 1 0 0 1 (2-2) Setting the output mode at contact OFF in external synchronized operation (see 5.2.16) The current output mode at contact OFF in external synchronized operation is displayed in the initial menu "ho: 4-20mA IN [EXT]" of "11: OTHERS". To make changes, it is necessary to press the [SET] key and place the software in the setup state.

  • Page 71: Functions Related To Operation

    ON/OFF. 6.8 Functions Related to Operation To enable you to use the Density Meter Type LQ500B more appropriately in various processes and situations, the device is equipped with various functions including the moving average, the change-rate limit, the electric conductivity correction, the additive correction, the linearizer and the density multiplier switching by external signals.

  • Page 72: Maintenance

    6 F 8 A 1 0 0 1 7. MAINTENANCE 7.1 Precautions for Maintenance, Inspection and Parts Replacement WARNING Yellow ■Be sure to set the power ■Be sure to set the power switch on the equipment to the switch on the equipment to the OFF position before doing OFF position before replacing maintenance or inspection...

  • Page 73: Maintenance And Inspection Items

    The service life is about 10 years at the ambient temperature of 20C or about 3 years at 50C. For stable use of the meter for many years, it is desirable to replace these parts in time. When replacing the capacitors, please contact Toshiba's Service Dept.
  • Page 74 In addition, display because it is limited life products, please replace on a regular basis, even if it is displayed correctly. When inspection and replacement, contact Toshiba's Service Dept. The recommended replacement cycle: within 5 years (At 25C ambient temperature) However, you may exchange cycle is shortened daylight and ambient temperature.

  • Page 75: Troubleshooting

    6 F 8 A 1 0 0 1 8. TROUBLESHOOTING 8.1 Troubleshooting If any trouble has developed, make a careful check and take appropriate steps. Table 8.1 shows possible troubles, their causes, and remedies. If anything wrong occurs, refer to the table below and take the necessary steps.
  • Page 76 6 F 8 A 1 0 0 1 Table 8.1 Troubleshooting (2) Trouble Cause Remedy Inappropriate density Calibrate span as described in correction factor setting. section 6.5. Very slow flow can be the cause. Air accumulates and keep Make the flow faster by using staying inside the detector.

  • Page 77: Error Indications And Recovery Operations

    6 F 8 A 1 0 0 1 8.2 Error Indications and Recovery Operations If an error occurs to the density meter, the indicator [MEASURE] will blink and a contact signal (OFF) will be output. Check the self-diagnosis data for any faulty values in accordance with the following steps. (1) Monitor menu display (see Subsection 5.2.4) First of all, press the [ESC] key of the converter several times (normally once although this varies with the operation status) to return to the initial menu display.
  • Page 78 6 F 8 A 1 0 0 1 Table. 8.2 Self-diagnosis data Data Item Data (Numeric value range; Data Status normal data range, status) Symbol Item name  Normal [GOOD]  Warning [WARNING.] Status Whether the phase [STATUS] measurement operation is normally functioning or not can be verified.
  • Page 79 6 F 8 A 1 0 0 1 Table. 8.2.1 Abnormal display and status Display Item Error status Minor error error1:RfTimeOut No data reception from RF section Liquid temperature is out of range (less than error2:LiqTemp -10C, +120C or more) Microwave recieved signal leve out of range error4:RfInputLv (less than -90 dBm)

  • Page 80: Corrections In Density Calculation

    6 F 8 A 1 0 0 1 9. CORRECTIONS IN DENSITY CALCULATION This density meter, which operates on the basis of phase difference measurement by microwaves makes automatic corrections to the measured phase angel for the fluid temperature and phase angel rotation before making the density calculations for the measured substance.

  • Page 81: Various Kinds Of Corrections

    6 F 8 A 1 0 0 1 9.2 Various Kinds of Corrections 9.2.1 Phase angle rotation correction The phase is available only from 0 degree to 360 degrees. If the phase incrementally reaches 360 degrees, it returns to 0 degree, from which it keeps incrementing again. If the phase decreasingly reaches 0 degrees, it returns to 360 degrees, from which it keeps decreasing again.

  • Page 82: Fluid Temperature Correction

    6 F 8 A 1 0 0 1 9.2.2 Fluid temperature correction The phase tends to change in a straight line with regard to the fluid temperature. In this connection, fluid temperature correction is performed on θ as follows to obtain the phase difference △θ...

  • Page 83: Rf Correction

    6 F 8 A 1 0 0 1 9.2.3 RF correction In addition to the fluid temperature correction, the density meter is equipped with the RF correction function in accordance with the features of the converter. The correction is performed on θ2 as follows to obtain the phase difference △θ.

  • Page 84: Phase Angle Rotation Correction (Details)

    6 F 8 A 1 0 0 1 9.3 Phase Angle Rotation Correction (Details) This section describes the special setups and actions required for cases of measuring high density. In normal measurement, it is unnecessary to be aware of the phase angle rotation correction, which is performed automatically.

  • Page 85: Judgment Conditions And Adjustments For Automatic Adjustment Of Phase Angle Rotations

    6 F 8 A 1 0 0 1 9.3.4 Judgment conditions and adjustments for automatic adjustment of phase angle rotations The judgment conditions and adjustments regarding the automatic adjustment of phase angle rotations and the measured density are listed in Table 9.3.1. Table 9.3.1 Judgment Conditions and Adjustments for Automatic Adjustment of Phase Angle Rotations = More Than Upper Density Measurement Range (UR)

  • Page 86: Invalidation By Setting The Automatic Adjustment Of Phase Angle Rotations

    6 F 8 A 1 0 0 1 density is less than 40(%TS). In this case, the measured density is 15.12(%TS) higher or lower than actual density. 9.3.6 Invalidation by setting the automatic adjustment of phase angle rotations In the state of starting the operation, the upper density measurement range is determined but the density multiplier is not determined yet (determined in the span calibration described in Section 6.5), thus the operation is started with a provisional value (initial value: 1).

  • Page 87: Return To The Normal Through Manual Input Of The Phase Angle Rotations

    6 F 8 A 1 0 0 1 9.3.8 Return to the normal through manual input of the phase angle rotations When it is different between the actual density and the measured density, it is necessary to reset the phase angle rotation to an appropriate value through manual input. The setting method is described below.

  • Page 88: Various Functions

    10. VARIOUS FUNCTIONS 10.1 Various Functions and their Outlines The density meter LQ500B is equipped with various functions to be used more appropriately in various processes and in various situations. Depending on the process being applied or the method of using the meter, some functions may not be necessary. Based on the descriptions below, choose the functions you need.

  • Page 89: Moving Average

    6 F 8 A 1 0 0 1 10.2 Moving Average 10.2.1 Function of moving average Assuming that the moving average times is "n", this function is to calculate and output the mean value of n preceding measured values each time. The function is used when an averaged output is required such as for density control.

  • Page 90: Change-Rate Limit

    6 F 8 A 1 0 0 1 10.3 Change-rate limit 10.3.1 Outline of change-rate limit function In the event of a sudden change in the density or a sudden variation in the output due to intrusion by bubbles, etc., this function is used to exclude these signals to restrain the sudden output change. By setting two measurement conditions of permissible variation width and limit times, the conditions for change-rate limit are set.

  • Page 91: Cautions In Using The Change-Rate Limit Factor

    6 F 8 A 1 0 0 1 Example 2: Signal change in the shape of steps Signal No. Signal No. Fig.10.3.4 Output Signal After change-rate limit Fig.10.3.3 Original Signal Fig.10.3.3 shows the original signal before the change-rate limit is processed. The numeric values along the horizontal axis refer to the signal numbers.

  • Page 92: Setting The Change-Rate Limit

    6 F 8 A 1 0 0 1 10.3.4 Setting the change-rate limit (1) Switching to the setting mode (see Subsection 5.2.5) First of all, press the [ESC] key of the converter several times (normally once although this varies with the operation status) to return to the initial menu display. Next, use the [→] key to move the display indicator cursor to the menu number "2"...

  • Page 93: Electric Conductivity Correction

    This function reduces the influence (density variation) of the conductivity changing by using the measured value of LQ500B. Thus, this function do not need to input the conductivity meter signal. ( The correction factor of this function is calibrated with sodium chloride).

  • Page 94: Additives Correction Factor

    For the sensitivity values of additives other than the ones shown in Table 10.5.2, please contact Toshiba. Whenever you send us a sample of additives, we can measure their sensitivity values. Sensitivity values are measured in the same way as used for span calibration for each of additives (measured density reading / density by manual analysis).

  • Page 95: Density Calculation

    6 F 8 A 1 0 0 1 10.5.2 Density calculation Following calculation modes can be selected. (1) Additives correction ON (To be made) / OFF (Not to be made) (a) Set value at shipping the density meter: OFF (2) When additives correction is "ON"(to be made), you can select two calculation modes. (b) Total density of mixture including the additives (TOTAL) (c) Density of the main component only (MAIN) In the mode (2) above, each of the density outputs (LED display of the converter, and the...

  • Page 96: Procedures For Using The Additives Correction Function

    6 F 8 A 1 0 0 1 10.5.3 Procedures for using the additives correction function The procedure for the additives correction function is described as following steps. Obtain sensitivities of the components .... Refer to table 10.5.2. You can set for up to Select the formula list number for registering (parameters) ten formulas.

  • Page 97: How To Set The Additives Correction Function

    6 F 8 A 1 0 0 1 10.5.4 How to set the additives correction function (1) Switching to the setting mode (see Subsection 5.2.5) First of all, press the [ESC] key of the converter several times (normally once although this varies with the operation status) to return to the initial menu display.

  • Page 98: Simplified Correction On Additives

    6 F 8 A 1 0 0 1 (3-5) Setting the sensitivity and the compound ratio Continuing on from (3-4), press the [UP] key to switch to the menu of "s0: MAIN OBJ SENS." and then, after switching to the setup display by pressing the [SET] key, input the sensitivity of the main object (component 0).

  • Page 99: Linearizer Setting

    6 F 8 A 1 0 0 1 10.6 LINEARIZER SETTING 10.6.1 Linearizer function Depending on the kind of substance to be measured, there may not be a linear relationship between the values measured by the meter and those obtained by manual analysis. Particularly, in the measurement of low density substance of about 1%, the meter tends to show readings in higher value at or less than 0.5% or show lower for the density about 1.5% or higher.

  • Page 100: Linearizer Setting

    6 F 8 A 1 0 0 1 Meter-measured value X (density multiplier 1.000) before linearization and meter-measured value X after linearization have the following relationship.  A For X X = C ( K  B For A < X X = C { K A + K - A)}...
  • Page 101 6 F 8 A 1 0 0 1 (3) Setting the density and the factor (see Subsection 5.2.14) The setup menus of density and factor are called one after another from the start of the menu development of "9: LINEARIZ/CNDUCTVTY". First of all, press the [SET] key at "LA: DENSITY A"...

  • Page 102: Density Multiplier Switching By External Signals

    6 F 8 A 1 0 0 1 10.7 Density Multiplier Switching by External Signals 10.7.1 Density multiplier switching function by external signals When switching around multiple measurement objects fulid of differing measurement sensitivities to measure their respective sensitivities, it is possible to take appropriate density measurements by resetting the density multiplier to a value in accordance with the relevant measured object fluid each time the measured object fluid is changed.
  • Page 103 6 F 8 A 1 0 0 1 (4) Setting density multipliers C2, C3 and C4 Continuing on from (3), press the [UP] key once to switch to the display of "C2: DensityMultiplier". Switch to the setup display by pressing the [SET] key here and then input the density multiplier C2.

  • Page 104: Data Save Function

    6 F 8 A 1 0 0 1 10.8 Data Save Function 10.8.1 Outline of Data Save Function (1) RS232C communication function The RS232C communication function can be used by adding the data save function. Using the RS232C communication function, measurement data can be read in an arbitrary measurement interval (1 to 1800 seconds).

  • Page 105: Rs232C Interface

    Measurement data and save data will be output from the RS232C terminal of the density meter LQ500B. To receive these data, communication terminal of PC or a printer is required. In addition, A communication cable to connect to the density meter is required.

  • Page 106: Data Save Function Setting Menu

    6 F 8 A 1 0 0 1 10.8.4 Data Save Function Setting Menu The Data Save Function Setting Menu starts in the special mode separate from the standard setting menu. When this menu is started, measurement data output stops. Setting item and setting value Factory set values and the ranges for each setting item are shown in Table 10.8.1.
  • Page 107 6 F 8 A 1 0 0 1 (3) How to operate the Data Save Menu Various operations can be made using 5 keys while watching the display and the setting area in the converter. This section explains the operation keys, Data Save Menu screen, and the operation method. ★...
  • Page 108 6 F 8 A 1 0 0 1 <Power ON> LQ500 Ver.*.** Copyright <Software Version screen> TOSHIBA 2020-2021 All Rights Reserved 2.50 Is [UP], [ESC] being pressed for 4 seconds or longer? [UP], [ESC] are being pressed. [UP], [ESC] are not being pressed.
  • Page 109 6 F 8 A 1 0 0 1 (4) Data save menu details ① Setting the Output Interval (Data Output Interval) The data interval output from RS232C in the normal measurement can be set in the unit of 1 second. If “0” is set, the data output is stopped. For the data output, see 5.1, “Output data format.” Note 1: To make changes of this setting item effective, it is necessary to exit the Data Save Menu and restart.
  • Page 110 6 F 8 A 1 0 0 1 ③ Clear Save Data Interval (Clear Save Data) This function clears all of the saved data. Note: Cleared data can never be recovered. Therefore, be careful when you do this operation. 9: OUTPUT INTERVAL 13: SAVE INTERVAL 14: CLEAR SAVE DATA 15: SAVE DATA LIST...

  • Page 111: About Output And Save Data Format

    6 F 8 A 1 0 0 1 10.8.5 About Output and Save Data Format (1) Output data format The following measurement data can be output from the Density Meter LQ500B through RS232C interface. 192.0 , 0 , 292.3 , 0 , 192.0 , 0 , -67.7 , 0 , 100.31 , 0005.031 , 25.34 , -30.00 ,-59.28 , 045.80 , 000...
  • Page 112 6 F 8 A 1 0 0 1 (3) Saved Data Output Format Data saved in non-volatile memory will be output in text form through RS232C. The output format of the text is as follows. Here, data of the index number 1 is the oldest data and data of the largest index number is the newest data.

  • Page 113: Specifications

    Note 3: The object to be measured is required to be free from cavities and have fluidity. Contact Toshiba for measurement ranges other than those described above. Note 4: For the range larger than 50%TS, please contact Toshiba. Repeatability: In the case of 2%TS or more in full-scale, 2%FS In the case of less than 2%TS in full-scale, 4%TS...

  • Page 114: Detector Specifications

    6 F 8 A 1 0 0 1 Ambient environment condition: Temperature: 0 to 50C Humidity: 5 to 90%RH (No condensation) Temperature code: T4A Structure: Detector IP67 or equivalent Converter IP65 or equivalent Note: Outdoor installation is possible. If there is a possibility of direct sunlight, however, provide a sunshade to the converter to avoid direct sunlight.

  • Page 115: Conveter Specifications

    Applicator window : Polysulfone Sealing material: Fluororubber (Viton) Note: Do not apply this density meter to fluids that may corrode, deteriorate or degenerate the above liquid contacting materials. Fore details, please contact Toshiba. Applicators: A pair of applicators provided for microwave reception/transmission...
  • Page 116 Internal conductivity correction function: This function reduces the influence (density variation) of the conductivity changing by using the measured value of LQ500B. Thus, this function do not need to input the conductivity meter signal. (The correction factor of this function is calibrated with sodium chloride). If this function (Internal conductivity correction) do not reduce the density variation by the conductivity changing, you can use “External conductivity correction”.

  • Page 117: Model Number Table

    6 F 8 A 1 0 0 1 11.4 Model Number Table Table 11.1 Model number table Model number Specification code Description 1 2 3 4 5 L Q 5 0 0 Density meter Detector meter size 50 mm 80 mm 100 mm 150 mm 200 mm...

  • Page 118: Attached Figure1. Detector Outline Dimensions

    6 F 8 A 1 0 0 1 APPENDIX 1 ● Attached Figure1. Detector outline dimensions [Unit: mm] The center of gravity C: Bolt pitch circle n: Number of bole holes h: Bolt diameter Enlarged view of B  117 ...
  • Page 119 6 F 8 A 1 0 0 1 External dimensions (Flange) Meter size Appropriate bolt size n-Φh Mass (kg) Std. (Diameter  length) (mm) spec. M16×60 4-19 Approx. 24 M16×65 8-19 Approx. 27 M16×65 8-19 Approx. 31 JIS10K M20×75 8-23 Approx.

  • Page 120: Attached Figure2. Converter Dimensions

    6 F 8 A 1 0 0 1 ● Attached Figure2. Converter dimensions [Unit: mm] 4-12 mounting holes Converter communication port Contact signal I/O (1) port Density signal output port Converter power supply cable port Contact signal Grounding terminal I/O (2) port Rerserved Mass: approx.7kg In the case of 50A mounting...
  • Page 121 6 F 8 A 1 0 0 1 APPENDIX 2 Contents of Name Plate  120 ...
  • Page 122 Operation Manual For Density Meter Type LQ500B******* August, 2022 1st Edition (A) Manufacture Address: Toshiba Infrastructure Systems & Solutions Corporation, 72-34 Horikawa-Cho, Saiwai-ku, Kawasaki-shi, 212-8585 JAPAN All Rights Reserved. . © Toshiba Infrastructure Systems & Solutions Corporation 2022  121 ...
  • Page 123 6F8A1001 変 更 記 録 REVISIONS 変更記号 REV.MARK 変 更 箇 所 ・ 変 更 内 容 承 認 調 査 担 当 保 管 ページ PAGE CHANGED PLACE AND CONTENTS APPROVED BY CHECKED BY PREPARED BY REGISTERED 変更発⾏⽇ REV.ISSUED 初版発⾏...

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