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Toshiba LQ300A00 Series Operation Manual

The insertion type density meter
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6 F 8 A 0 7 8 7
Operation Manual
For
The Insertion Type Density Meter
Type LQ300A00******
© TOSHIBA Corporation 2002
All Rights Reserved.

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Summary of Contents for Toshiba LQ300A00 Series

  • Page 1 6 F 8 A 0 7 8 7 Operation Manual The Insertion Type Density Meter Type LQ300A00****** © TOSHIBA Corporation 2002 All Rights Reserved.
  • Page 3 6 F 8 A 0 7 8 7 ■ Notice 1. Do not copy or transcribe this manual in part or entirety without written permission from Toshiba. 2. The manual is subject to change without notice. 3. Although we tried hard to make this manual error free, if you find any errors or unclear passages, kindly let us know.
  • Page 4 6 F 8 A 0 7 8 7 INTRODUCTION Thank you very much for your purchase of the LQ300A00****** Density Meter. This manual is prepared for people in charge of installation, operation or maintenance. The manual describes the precautions in using the meter, and explains about installing, adjusting, calibrating and maintaining the LQ300A00****** meter.

  • Page 5: Safety Precautions

    6 F 8 A 0 7 8 7 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. Please be sure to thoroughly understand the meanings of the following signs and symbols before reading the sections that follow, and observe the instructions given herein.
  • Page 6 For a safe use of the LQ300A00****** 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 7 6 F 8 A 0 7 8 7 Safety Precautions (Continued) WIRING PRECAUTIONS WARNING Yellow ■Be sure to install a fuse and a switch ■Be sure to ground the equipment using a to disconnect the equipment from the grounding wire separate from those used for power source.
  • Page 8 6 F 8 A 0 7 8 7 Safety Precautions (Continued) PRECAUTIONS REGARDING MAINTENANCE, INSPECTION, AND PARTS REPLACEMENT WARNING Yellow ■ Be sure to set the power switch on ■ Be sure to set the power switch on the the equipment to the OFF position equipment to the OFF position before before doing maintenance or inspection replacing the fuse.
  • Page 9 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. • Main control system for atomic power generating plant/Safety protection system for nuclear facilities/Other critical safety systems/medical control system for sustaining life •...

  • Page 10: [Note] Sign

    6 F 8 A 0 7 8 7 [NOTE] Sign In addition to the signs and symbols for safety precautions shown in the first several pages of the manual, the following sign is also used. ♦ [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.

  • Page 11: Important Notes On Use Of The Insertion Type Density Meter Lq300A00

    LQ300A00****** 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 12 Otherwise, the density meter may be broken, resulting in malfunction or fault. [NOTE] Before returning your density 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 13: Table Of Contents

    6 F 8 A 0 7 8 7 Contents Safety Precautions ....................................3 [NOTE] Sign ......................................8 Important Notes on Use of The Insertion Type Density Meter LQ300A00****** ................9 1 OVERVIEW .....................................14 Principle of Measurement ..............................14 Features....................................15 UNPACKING....................................16 Standard Components .................................16 Standard Accessories ................................16 3 INSTALLATION ....................................17...
  • Page 14 6 F 8 A 0 7 8 7 6.3.2 Verifying and setting measurement conditions......................59 Zero Calibration..................................60 Span Calibration...................................62 Operation .....................................64 External Synchronized Operation ............................65 6.7.1 Movement of the external synchronized operation......................65 6.7.2 Setting the external synchronized operation .......................66 Functions Related to Operation ............................67 7 MAINTENANCE ....................................68...
  • Page 15 6 F 8 A 0 7 8 7 10.6 LINEARIZER SETTING................................95 10.6.1 Linearizer function...............................95 10.6.2 Linearizer setting.................................97 10.7 Density Multiplier Switching by External Signals........................98 10.7.1 Density multiplier switching function by external signals.....................98 10.7.2 Setting the density multiplier switching by external signals..................99 11.

  • Page 16: Overview

    6 F 8 A 0 7 8 7 1 OVERVIEW The LQ300A00****** Density Meter measures the density of a substance that flows in a tank and 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 17: Features

    6 F 8 A 0 7 8 7 1.2 Features The Insertion Type Density Meter has the following features compared to the flow-through type density meter: (1) Applicable to the larger size piping or tank of more than 300 mm in meter size In this system the transmission and reception applicators (antenna) are installed at a fixed distance in a pipe and then the pipe itself is inserted into a larger pipe or a tank thus the installation of this density meter is not dependent on pipe size.

  • Page 18: Unpacking

    6 F 8 A 0 7 8 7 2 UNPACKING Check items by the following list and table at unpacking. 2.1 Standard Components (1) Density Meter : 1 unit (2) Standard accessories : 1 unit <Supplementary Explanation> In the event of performing remote control through communications, you are required to have the hand- held terminal AF100 type (type code: AF100LQ3AAA3), which is a specialized terminal for communications.

  • Page 19: Installation

    6 F 8 A 0 7 8 7 3 INSTALLATION 3.1 Precautions for Installation WARNING ■ The meter is heavy. To move it for ■ Do not operate where there is a relocation or installation, an qualified possibility of leakage of flammable or operator qualified for safety should explosive gas.
  • Page 20 6 F 8 A 0 7 8 7 Hoisting the Density Meter Before Installation Make sure to hoist the density meter using the hoisting bands. Hoisting it with incomplete position or condition can cause a fall or damage to the density meter. [NOTE] When you move or install the Insertion Type Density Meter, make sure to hoist the density meter using the hoisting bands.

  • Page 21: Installation Location

    6 F 8 A 0 7 8 7 3.2 Installation Location [NOTE] ◆ Determine an indoor installation place in accordance with the following instructions. Choose a place that is free of vibrations and corrosive gasses, and has ample space for maintenance.
  • Page 22 Metal pipe or metal tank 金属製配管 Fluid to be measured 測定対象流体 Notes *1 The length when Toshiba recommendation flange is used. (Refer to 3H8A6579 and 3H8A6580 for details.) *2 The length when *1 above and Sch40 standard stainless steel pipe is used. Diameter (mm) Length (mm) 金属製配管...

  • Page 23: Installation And Piping

    6 F 8 A 0 7 8 7 3.3 Installation and Piping Installing the density meter is illustrated in Fig. 3.3.1 and Fig. 3.3.2, Fig.3.3.3, Fig.3.3.4. [NOTE] <Common Precautions> Install the density meter in a place where the distribution of density is even. Install the density meter in a location where the measured fluid flows in a tank or pipe in full and bubbles do not stay.
  • Page 24 6 F 8 A 0 7 8 7 (17) On both the upstream and downstream sides of the density meter, install shutoff valves. Furthermore, between these valves and the density meter, install the sampling port, the zero water supply port, the air release port, the drain port with a shutoff valve attached respectively.
  • Page 25 6 F 8 A 0 7 8 7 Shutoff valve Shutoff valve Vent valve Zero point water valve Zero point water piping Density meter Bypass piping Drain valve Drain piping Shutoff valve Direction of flow upward Fig. 3.3.2 Meter mounted vertically Vent valve Zero point water valve Shutoff valve...
  • Page 26 6 F 8 A 0 7 8 7 [NOTE] (1) When you install the density meter, see 3.3.4 Precautions When Installing the Density Meter. (2) Install the density meter in a metal piping system. M8 screw tightening torque: 10.0 to 13.5N•m (Tighten the screws evenly.) When installing or removing the density meter, insert or remove the applicator...

  • Page 27: Precautions For Wiring

    6 F 8 A 0 7 8 7 3.4 Precautions for Wiring WARNING Yellow ■Be sure to install a fuse and a switch ■Be sure to ground the equipment using a to disconnect the equipment from the grounding wire separate from those used for power source.

  • Page 28: Wiring

    6 F 8 A 0 7 8 7 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. [IMPORTANT] (1) Provide a switch and a fuse to separate this unit from the mains power for ease of maintenance.
  • Page 29 6 F 8 A 0 7 8 7 AC Power 100 to 240V 50/60Hz (50VA) Ground (R<100 ohms) (PE terminal) External sync. contact input (24VDC, 1A) COM1 Density meter error or “in-maintenance”, contact output (125Vac, 0.1A) Measured Density Output (4- COM2 20mADC,R<750ohms insulated output) Voltage input for selection of "density multiplier"...

  • Page 30: Part Names And Functions

    6 F 8 A 0 7 8 7 4. Part Names and Functions The detector is integrated with the converter in the Insertion Type Density Meter LQ300A00******. 4.1 Detector (5) Converter cover (4) Density value display Detector (1) Temperature detector (3) Converter (2) Applicators (antenna) Fig.

  • Page 31: Conveter

    6 F 8 A 0 7 8 7 4.2 Conveter Figure 4.2 shows the converter cover (5 in Fig. 4.1) with its door open. (10) Density indicator (4 in Fig 4.1) (7) Setting keys (6) LCD display (4) [MEASURE] indicator (3) [POWER] indicator (5) [ALARM] indicator...
  • Page 32 6 F 8 A 0 7 8 7 (1) [POWER] switch The power switch for the density meter. (2) Fuse 1A(M), 250V glass tube fuse is inside. (3) [POWER] Indicator (Green LED) Green LED lights when AC power turns on by the power switch. (4) [MEASURE] Indicator (Green LED) The indicator lights when measuring, and turns off when setting and when measuring stops at externally synchronized operation.

  • Page 33: Operation Procedure

    6 F 8 A 0 7 8 7 5. Operation Procedure 5.1 Parameters 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 34 6 F 8 A 0 7 8 7 Table 5.1.1 Parameters and Set Values (No.2) Measurement Condition Parameter Unit Ex-factory Set Values Setting Range No (Without loading Availability of additives correction (AF) OFF / ON − material correction) Display density type of Total TOTAL / MAIN −...

  • Page 35: Menus And Operations

    6 F 8 A 0 7 8 7 5.2 Menus and operations Operations should be done with five keys for setting, in combination with the LCD display. This section shows menus and operations. 5.2.1 main menu Main menu is composed of three basic menus shown below. Table 5.2.1 shows the functions of each menu and performances when selected.

  • Page 36: Setting Keys

    6 F 8 A 0 7 8 7 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 Notation in Setting Operation...

  • Page 37: Menu Display

    6 F 8 A 0 7 8 7 5.2.3 Menu display The menu display of the converter LCD display section has a hierarchical structure as shown in Table 5.2.3. Note: Occasionally using some abbreviated terms as well, actual LCD displays differ from Table 5.2.3. For details, refer to Section 5.2.4.
  • Page 38 6 F 8 A 0 7 8 7 Table 5.2.3 Menu Display (2) Menu 1 Menu 2 Menu 3 Menu 4 Upper density measurement range (UR) Setting the upper density measurement range (UR) Lower density measurement range (LR) Setting the lower density measurement range (LR) Density line slope (a) Setting the density line slope (a) Density intercept (b)
  • Page 39 6 F 8 A 0 7 8 7 Table 5.2.3 Menu Display (3) Menu 1 Menu 2 Menu 3 Menu 4 Availability of additives correction (AF) Selecting the availability of additives correction (AF) Display density type (Ad) Selecting the display density type (Ad) Output density type (Ac) Displaying the output density type (Ac) Parameter set No.

  • Page 40: Monitoring Menu Display And Operating Procedures

    6 F 8 A 0 7 8 7 5.2.4 Monitoring menu display and operating procedures 1 :MONITORING MENU 2 :SETTING MENU 3 :MEASURING MODE Move the cursor to "1" with [→] key, and Note : In actual display, the cursor is [ESC] press [SET] key.

  • Page 41: Setting Menu Display And Operating Procedures

    6 F 8 A 0 7 8 7 Setting menu 5.2.5 display and operating procedures MONITORING MENU 2 : SETTING MENU 3 : MEASURING MODE Move the cursor to "2" with [→] key, and press [SET] key. When [2: SETTING MENU] is selected, the density Test output will be output signal and the density display are hold in the valid.

  • Page 42: Measuring Mode Display And Operating Procedures

    6 F 8 A 0 7 8 7 5.2.6 Measuring mode display and operating procedures ：MONITORING MENU 2 ：SETTING MENU 3 ：MEASURING MODE Move the cursor to "3" with [→] key, and press [SET] key. [ESC] (Previous Menu) MEASURING MODE ：MEASURING MODE Press the SET key to set.
  • Page 43 6 F 8 A 0 7 8 7 [DN] ：DENSITY LINE SLOPE The set value of "density line slope" of the arithmetic expression for calculating the density DATA：0.0840 [ESC] from the phase measurement data, etc. can be verified. Normally “0.084” is displayed here. (Previous [ESC] RETURN Menu)
  • Page 44 6 F 8 A 0 7 8 7 [DN] :ZERO LIQUID TEMP. DATA：25.00 The liquid temperature at the time of zero calibration can be [ESC] verified. [ESC] RETURN (Previous Menu) [UP] [DN] The set value of the RF correction factor used for density cG:RF COEF.
  • Page 45 6 F 8 A 0 7 8 7 [DN] ：DENSITY MULTIPLIER DATA：1.000 [ESC] RETURN [ESC] (Previous Menu)  43 ...

  • Page 46: Measured Values Display And Operating Procedures

    6 F 8 A 0 7 8 7 5.2.8 Measured values display and operating procedures ：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 p PHASE: 123.56 N=0...
  • Page 47 6 F 8 A 0 7 8 7 [DN] The converter's RF data (concerning the micro G:RF DATA. wave phase measurement) can be verified. DATA : 40.00 Normally, the value is 10 to 70. [ESC] [ESC] RETURN (Previous [UP] Menu) [DN] The voltage of the 5-volt power supply can be J:+5V POWER SUPPLY...

  • Page 48: Parameter Setting Display And Operating Procedures

    6 F 8 A 0 7 8 7 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 DATA：3.0...
  • Page 49 6 F 8 A 0 7 8 7 [DN] dt:DELAYED SYNC.TIME dt:DELAYED SYNC.TIME [SET](Set) DATA：0.5 RANGE :0.1-99.9 min [ESC] [SET](Fix) DATA : [SET] CHANGE (Previous [SET] SET,[ESC] CANCEL [ESC] RETURN [ESC](Cancel) Menu) [UP] In external synchronized operations, the delayed time from when the external contact input is turned ON until the measurement starts is [DN] set.
  • Page 50 6 F 8 A 0 7 8 7 [DN] [SET](Set) zG:ZERO RF DATA zG:ZERO RF DATA RANGE :0.00-100.00 ﾟC DATA： 50.00 [SET](Fix) [ESC] DATA: [SET] CHANGE [ESC](Cancel) (Previous [SET] SET,[ESC] CANCEL [ESC] RETURN Menu) [UP] The zero-point RF data can be set in this menu through manual input.

  • Page 51: Zero Calibration Display And Operating Procedures

    6 F 8 A 0 7 8 7 5.2.11 Zero calibration display and operating procedures 5:SET PARAMETERS 6:ZERO CALIBRATION 7:SPAN CALIBRATION 8:ANGLE ROTATION Move the cursor to "6" with [→] key, and press [SET] key to select [6:ZERO CALIBRATION] p PHASE :81.23 ゜ N=0 ZERO POINT zT TEMP.

  • Page 52: Phase Angle Rotation Correction Display And Operating Procedures

    6 F 8 A 0 7 8 7 5.2.13 Phase angle rotation correction display and operating procedures 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 UH:UPPER ANGLE...

  • Page 53: Linearize/Conductity Correction Display And Operating Procedures

    6 F 8 A 0 7 8 7 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) DATA :0.60 RANGE :0.00-99.99 [ESC]...
  • Page 54 6 F 8 A 0 7 8 7 [DN] [SET](Set) r:CNDUCTVTY. COEF. r:CNDUCTVTY. COEF. RANGE :10.00 RANGE :0.00-99.99 [SET](Fix) [SET] DATA DATA : [ESC] [ESC] RETURN [SET] SET,[ESC] CANCEL [ESC](Cancel) (Previous Menu) In the event of performing electric conductivity correction, the [UP] correction factor γ...

  • Page 55: Additives Correction Display And Operating Procedures

    6 F 8 A 0 7 8 7 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. AF:ADDITIVES COMP. DATA :ON RANGE :OFF/ON [SET](Fix)
  • Page 56 6 F 8 A 0 7 8 7 [DN] [SET](Set) Ap:PARAMETER SET NO. Ap:PARAMETER SET NO. [SET](Fix) DATA：01 RANGE:1 - 10 [ESC] DATA:01 [SET] CHANGE [ESC](Cancel) (Previous [SET] SET,[ESC] CANCEL [ESC] RETURN Menu) Ten parameter sets (tables for each brands) can be registered for additives [UP] correction.
  • Page 57 6 F 8 A 0 7 8 7 [DN] [SET](Set) s5:ADDITIVE SENS. s5:ADDITIVE SENS. DATA：1.00 RANGE :−9.99 - 9.99 [SET](Fix) [ESC] [SET] CHANGE DATA:1.00 (Previous [ESC] RETURN [SET] SET,[ESC] CANCEL [ESC](Cancel) Menu) [UP] [DN] R1:ADDITIVE RATIO R1:ADDITIVE RATIO [SET](Set) RANGE :0.000 - 1.999 DATA：0.000 [ESC] DATA:0.100...

  • Page 58: Other Menus Display And Operating Procedures

    6 F 8 A 0 7 8 7 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 [SET](Fix)

  • Page 59: Operations

    6 F 8 A 0 7 8 7 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) See 6.2 (2) Verifying the valve closure Verifying the cable connection See 6.2 (3)

  • Page 60: Preparations Before Turning On Power

    6 F 8 A 0 7 8 7 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, “Precautions when installing the density meter in a tank”.

  • Page 61: Verifying And Setting Measurement Conditions

    6 F 8 A 0 7 8 7 6.3.2 Verifying and setting measurement conditions (1) Verifications and settings for initial powering-ON In the event of starting the operation after turning on the power for the first time since installing this density meter, it is necessary to first set the measurement conditions of the converter. Various measurement conditions (parameters) are verified and set by means of the setting key while viewing each menu screen of the LCD indicator.

  • Page 62: Zero Calibration

    6 F 8 A 0 7 8 7 6.4 Zero Calibration All the density meters are calibrated for zero point [zero point phase ( θ ) zero point liquid temperature ), and atmospheric temperature (A ) ] 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 0 7 8 7 (7) Supplying zero water Put zero water (such as tap water) in the density meter pipe through the zero water supply port by using a vinyl hose. (8) Clean the tank or the piping system where the density meter is installed. When the detector main pipe is filled with water, open the drain valve to let out the water from the main pipe.

  • Page 64: Span Calibration

    6 F 8 A 0 7 8 7 (15) Restoring to the measuring mode Press the [ESC] key of the converter twice to return the menu of the LCD indicator to the initial menu display to return to the usual measuring mode from the setting mode. Thus, the measurement starts.
  • Page 65 6 F 8 A 0 7 8 7 (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 LCD indicator cursor to the menu number "2"...

  • Page 66: Operation

    6 F 8 A 0 7 8 7 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 67: External Synchronized Operation

    6 F 8 A 0 7 8 7 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 68: Setting The External Synchronized Operation

    6 F 8 A 0 7 8 7 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 69: Functions Related To Operation

    6 F 8 A 0 7 8 7 (2-1) Selecting the "OTHERS" setting menu (see Subsection 5.2.5) Continuing on from (1), press the [ESC] key to return to the display of menus 5 to 8 in setting mode. Press the [UP] key to switch to the display of the next menus 9 to 11. Use the [→] key to move the cursor of the LCD indicator to the menu number "11"...

  • Page 70: Maintenance

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

  • Page 71: Maintenance And Inspection Items

    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. ◆ In the event that the characters on the LCD display becomes weak in contrast or edge, it is considered that the LCD display unit has reached the end of its life.

  • Page 72: Troubleshooting

    6 F 8 A 0 7 8 7 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 73 6 F 8 A 0 7 8 7 Table 8.1 Troubleshooting (2) Trouble Cause Remedy Inappropriate density correction factor Calibrate span as described in section 6.5. setting. Very slow flow can be the cause. Make the Air accumulates and keep staying flow faster by using smaller bore detector inside the detector.

  • Page 74: Error Indications And Recovery Operations

    6 F 8 A 0 7 8 7 8.2 Error Indications and Recovery Operations If an error occurs to the density meter, the error indicator [ALARM] will light up 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 75 6 F 8 A 0 7 8 7 Table 8.2 Self-diagnosis data Data Item Data Data Status (Numeric value range; 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 76: Corrections In Density Calculation

    6 F 8 A 0 7 8 7 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 77: Various Kinds Of Corrections

    6 F 8 A 0 7 8 7 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 78: Rf Correction

    6 F 8 A 0 7 8 7 9.2.3 RF correction In addition to the liquid 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 79: Phase Angle Rotation Correction (Details)

    6 F 8 A 0 7 8 7 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 80: Restrictions And Invalidation In Applying The Automatic Adjustment Of Phase Angle Rotations

    6 F 8 A 0 7 8 7 Table 9.3.1 Judgement Conditions and Adjustments for Automatic Adjustment of Phase Angle Rotations Measured Density Automatic Adjustment of Phase Angle Rotations N = Less than - 4(%TS) Incremented (N = N+1) - 4∼C×a×360(%TS) Unadjusted = More than C x a x 360 (%TS) Decreased (N = N-1)

  • Page 81: Actions After Invalidating The Automatic Adjustment Of Phase Angle Rotations

    6 F 8 A 0 7 8 7 adjustment of phase angle rotations, which is supposed to be invalidated, may not be invalidated, making it impossible to take an appropriate measurement (including the span calibration). This applies to the case in which the original density multiplier is smaller than the current set value (the initial value 1 in the initial operation).

  • Page 82: Return To The Normal Through Manual Input Of The Phase Angle Rotations

    6 F 8 A 0 7 8 7 If Xmax is greater than the upper density measurement range, the function of automatic adjustment of phase angle rotations is applicable. Therefore, return the function of automatic adjustment of phase angle rotations which is set to "OFF" in Subsection 9.3.6 to“ON”. If Xmax is smaller than the upper density measurement range, the function of automatic adjustment of phase angle rotations is invalid.

  • Page 83: Various Functions

    6 F 8 A 0 7 8 7 10 VARIOUS FUNCTIONS 10.1 Various Functions and their Outlines The Insertion Type Density Meter LQ300A00****** 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.

  • Page 84: Moving Average

    6 F 8 A 0 7 8 7 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 85: Change-Rata Limit

    6 F 8 A 0 7 8 7 10.3 Change-rata 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 86: Cautions In Using The Change-Rate Limit Factor

    6 F 8 A 0 7 8 7 Fig.10.3.1 shows the original signal before the change-rate limit is processed. No.1 to No.4 are varying within a small width; however, only signals No.5 and No.6 are varying in excess of 0.5%TS deviation from the immediately preceding signal No.4.

  • Page 87: Setting The Change-Rate Limit

    6 F 8 A 0 7 8 7 steps as shown in Example 2, a delay increases in accordance with the set times. Set an appropriate value for the times in accordance with the responsiveness required of the plant. 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...

  • Page 88: Electric Conductivity Correction

    6 F 8 A 0 7 8 7 10.4 Electric Conductivity Correction 10.4.1 Standard conductivity correction factor The indication of the density meter varies with the conductivity of the measured object fluid; however, the variance is as small as approx. 0.15%TS to 1mS/cm change in conductivity and usually practically negligible, thus making it unnecessary to input the conductivity meter signal to perform electric conductivity correction.

  • Page 89: How To Obtain And Set A Correction Factor

    6 F 8 A 0 7 8 7 Table 10.4.1 Standard Values of Electric Conductivity Correction Factor (γ) (Based on Electric Conductivity Meter with a Range of 0 to 10 mS/cm) and Slope of the Line (a) Item γ (Standard Value) Multiplier 0.084 In the event of performing a electric conductivity correction on this density meter, it is a basic principle...
  • Page 90 6 F 8 A 0 7 8 7 (1-2) Selecting the span calibration menu (see Subsection 5.2.5) The menu list of menu numbers 5 to 8 is displayed. Use the [→] key to move the LCD indicator cursor to the menu number "7" of "7: SPAN CALIBRATION" and then press the [SET] key to select the menu of "7: SPAN CALIBRATION."...
  • Page 91 6 F 8 A 0 7 8 7 (3-3) Reading and recording measured conductivity and density values The externally installed conductivity meter is used to measure the conductivity (E ) of the measured object fluid while, at the same time, reading the measured density (M ) from the LCD indicator or from the LED display outside the converter.

  • Page 92: Additives Correction Factor

    Usually, the sensitivity, s0 for pulp, is set to 1.000. The sensitivities for typical additives are listed in table 10.5.2. For other additives, please contact Toshiba, we measure the sensitivity when you provide us with a sample of an additive. A sensitivity is measured in the same procedures for the off-line span calibration for an additive, from (measured density reading/density by manual analysis).

  • Page 93: Density Calculation

    6 F 8 A 0 7 8 7 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: (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 pulp only (MAIN) In the mode (2) above, each of the density outputs (LED display of the converter, and the current...

  • Page 94: Procedures For Using The Additives Correction Function

    6 F 8 A 0 7 8 7 (Note) When using the additives correction functions of (b) or (c), set the density multiplier C to 1.000. Following procedure is recommended for making span adjustment. At the beginning of the use of correction, for a whole mixture of a formula, compare the measured density readings you get in dry method (dry weight) and in manual analysis, and when required, make span adjustment by adjusting the density multiplier C of the whole mixture.

  • Page 95: How To Set The Additives Correction Function

    6 F 8 A 0 7 8 7 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 96: Simplified Correction On Additives

    6 F 8 A 0 7 8 7 (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 97: Linearizer Setting

    6 F 8 A 0 7 8 7 10.6 LINEARIZER SETTING 10.6.1 Linearizer function The Insertion Type Density Meter has an excellent linear characteristic between the actual density and the measured value. 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.
  • Page 98 6 F 8 A 0 7 8 7 Meter-measured value X (density multiplier 1.00) before linearization and meter-measured value X after linearization have the following relationship. For X ≦ A X = C（ K   X ） For A ＜ X ≦...

  • Page 99: Linearizer Setting

    6 F 8 A 0 7 8 7 10.6.2 Linearizer setting (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 LCD indicator cursor to the menu number "2"...

  • Page 100: Density Multiplier Switching By External Signals

    6 F 8 A 0 7 8 7 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 101: Setting The Density Multiplier Switching By External Signals

    6 F 8 A 0 7 8 7 10.7.2 Setting the density multiplier switching by external signals (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 102: Specifications

    Measurement range: The density measurement range is set by setting the lower (4mA) and upper (20mA) ranges of density measurement. The measured object fluid is required to be free from cavities and have fluidity. Please contact Toshiba for ranges other than those described below. Lower density measurement range: 0 to 49%TS...

  • Page 103: Detector Specifications

    Maximum velocity: 5m/s (when viscosity is 1 Pa•s) Note: When the viscosity level increases, the maximum velocity will be limited. Contact Toshiba. (Example: In the case of 0°C water, 1.792 mPa•s) Microwave transmission power: approx. 1mW Note: This power is within the limit stipulated in the Radio Law. No license is required.

  • Page 104: Converter Specifications

    Applicator (antenna) window sealant: Fluoro rubber Note: Do not use the above materials contacting liquid on fluids which may cause corrosion, deterioration or quality change in them. Contact Toshiba for details. Non-applicable fluids: Strong sulfuric acid, strong nitric acid Applicators: A pair applicators provided for microwave reception/transmission Temperature detector: RTD (resistance temperature detector) (Pt 100) Mounting style: Applicators facing the upstream and positioned in parallel with flow direction.
  • Page 105 6 F 8 A 0 7 8 7 Communication signals: Digital signals are sent superimposed on the 4 to 20mADC signal line (based on the HART*1 protocol). *1 HART: Abbreviated from Highway Addressable Remote Transducer as the name of a industrial sensor communications protocol recommended by HCF (HART Communication Foundation).
  • Page 106 6 F 8 A 0 7 8 7 Arresters: Mounted as standard on the current output and AC power supply lines. External display section: Equipped with the density display as standard. LED of 7 segments by 4 characters (00.00 to 99.99 %TS). Operation console (inside the converter): Used for verifying, changing and manipulating various data.

  • Page 107: Model Number Table

    6 F 8 A 0 7 8 7 11.4 Model Number Table Table 11.1 Model Number Table TYPE CAT Code SPECIFICATION 9 10 12 13 14 15 L Q 3 LQ300 Density (Consistency) meter Standard Meter Size Insertion type (Suitable Pipe size 250mm (10”) or larger) Attachment hole flange for LQ300 insertion type Equipment for ANSI 150 (meter size 100mm (4”)) Equipment for DIN 10 (meter size 100mm (4”))
  • Page 108 6 F 8 A 0 7 8 7 Table 11.2. Type Function code as converter direction toward the flow direction Converter direction toward the flow direction Description of Function code Figure 9-A None (standard) Figure 9-B FUNC. A Figure 9-C FUNC.

  • Page 109: Appendix

    6 F 8 A 0 7 8 7 Appendix Attached Figure 1. [Unit: mm] Center of gravity position 重心位置 8 - φ 19 hole JIS10K, 100A flange JIS10K, 100A フランジ  107 ...
  • Page 110 6 F 8 A 0 7 8 7 Operation Manual For The Insertion Type Density Meter Type LQ300A00****** Feb. 2002 1st Edition (A) Address: Toshiba Corporation, 1-1, Shibaura 1-chome, Minato-ku, Tokyo 105-8001, Japan Phone: +81-3-3457-8302 © Toshiba Corporation, 2002 All Rights Reserved.  108 ...

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