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No. EJL- 106ADensity (Consistency) Meter LQ500IntroductionThe LQ500 density (consistency) meter usesmicrowave phase shift technology to determineconcentrations of solids in the material to be measuredflowing through pipes. It can perform a stable andrealtime density (consistency) measurement becausethis technology is not affected by flow velocity alongwith fluid color, and also is not easily affected bycontaminants and low process pressure rate. As theLQ500 has no moving parts, it is reliable and virtuallymaintenance free.Since the output of the LQ500 is theoretically linear, itcan be applied to a wide range of density (consistency)measurement.The LQ500 requires a full pipe to measure thedensity (consistency). Contact Toshiba beforeinstallation in the following cases:(a) When it is installed at the discharge of a pump.(b) When installation is horizontal, and unfilledcondition occurs inside the pipe.(c) A process where the pipe becomes unfilledwhen the operation is stopped.Cable for power supply(Detector/converter)Ground resistance100 ohm or lessDensity (consistency)measurement output 4-20mACable for communication(Detector/converter)AC power supplyDI / DOExternal Sync controlcontact inputFigure 1. LQ500 Configuration Diagram■ Standard Configuration• Density (Consistency) Meter: 1 set(Detector and converter separate mounted)• Accessories: 1 set (see Table 1 below)Table 1. Standard AccessoriesItems Specifications QuantityPower supplycableBetween detector andconverter (*1)10 m(32.8 ft)CommunicationcableBetween detector andconverter (*1)10 m(32.8 ft)Fuse 2A(T), 250 V(glass tube, 5.2 dia. x 20 mm) 2Document Instruction manual 1Note 1: Need to prepare a power supply cable for theLQ500.Refer to the section of cable specifications at theoverall specifications in detail.Figure 2. LQ500 Density (consistency) MeterSpecifications■ Overall SpecificationsMeasurement method:Microwave phase difference methodMeasurement range:Meter size 50 mm (2”) 80 to 300 mm(3” to 12”)Span (*2) 2 to 50 %TS (*1) 1 to 50%TS (*1)Lower limit settingrange (4 mA) 0 to 48%TS 0 to 49%TSUpper limit settingrange (20 mA) 2 to 50%TS 1 to 50%TSSetting increments 0.1%TS*1 TS: Total Solids*2 Span = Upper range – Lower range*3 The material to be measured must be fluidand be filled evenly with no voids.Repeatability:Meter size 50 mm (2”) 80 to 300 mm(3” to 12”)Repeatability ±0.02%TS ±0.01%TSNote 1 : Above values are the results of commuting abilityin the phase measurements of the converter.Note 2 : Density (consistency) determinationrepeatability for sample reagent;Meter size 50 mm(2”)80 to 300 mm(3” to 12”)For the fullscale value of2%TS orgreater±2%FS ±2%FSDensity(consistency)determinationrepeatability For the fullscale value ofless than 2%TS±4%FS*The characteristics of sample reagent has errors dueto sample tests such as uneven density (consistency)distribution.*Full scale is the maximum value in the measurement |
