Toshiba Density (Consistency) Meter LQ500 Manuals

No. EJL- 106A Density (Consistency) Meter LQ500 Introduction The LQ500 density (consistency) meter uses microwave phase shift technology to determine concentrations of solids in the material to be measured flowing through pipes. It can perform a stable and realtime density (consistency) measurement because this technology is not affected by flow velocity along with fluid color, and also is not easily affected by contaminants and low process pressure rate. As the LQ500 has no moving parts, it is reliable and virtually maintenance free. Since the output of the LQ500 is theoretically linear, it can be applied to a wide range of density (consistency) measurement. The LQ500 requires a full pipe to measure the density (consistency). Contact Toshiba before installation in the following cases: (a) When it is installed at the discharge of a pump. (b) When installation is horizontal, and unfilled condition occurs inside the pipe. (c) A process where the pipe becomes unfilled when the operation is stopped. Cable for power supply (Detector/converter) Ground resistance 100 ohm or less Density (consistency) measurement output 4-20mA Cable for communication (Detector/converter) AC power supply DI / DO External Sync control contact input Figure 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 Accessories Items Specifications Quantity Power supply cable Between detector and converter (*1) 10 m (32.8 ft) Communication cable Between detector and converter (*1) 10 m (32.8 ft) Fuse 2A(T), 250 V (glass tube, 5.2 dia. x 20 mm) 2 Document Instruction manual 1 Note 1: Need to prepare a power supply cable for the LQ500. Refer to the section of cable specifications at the overall specifications in detail. Figure 2. LQ500 Density (consistency) Meter Specifications ■ Overall Specifications Measurement method: Microwave phase difference method Measurement 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 setting range (4 mA) 0 to 48%TS 0 to 49%TS Upper limit setting range (20 mA) 2 to 50%TS 1 to 50%TS Setting increments 0.1%TS *1 TS: Total Solids *2 Span = Upper range – Lower range *3 The material to be measured must be fluid and 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%TS Note 1 : Above values are the results of commuting ability in the phase measurements of the converter. Note 2 : Density (consistency) determination repeatability for sample reagent; Meter size 50 mm (2”) 80 to 300 mm (3” to 12”) For the full scale value of 2%TS or greater ±2%FS ±2%FS Density (consistency) determination repeatability For the full scale value of less than 2%TS ±4%FS *The characteristics of sample reagent has errors due to sample tests such as uneven density (consistency) distribution. *Full scale is the maximum value in the measurement

6 F 8 A 0 5 2 1 OPERATION MANUAL DENSITY METER TYPE LQ500