Toshiba LQ500 specifications Introduction, Overall Specifications, Standard Configuration

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.

<Notice>

The LQ500 requires a full pipe to measure the density (consistency). Contact Toshiba before installation in the following cases:

<Possibility of unfilled condition>

(a) When it is installed at the discharge of a pump.

(b) When installation is horizontal, and unfilled

Figure 2. LQ500 Density (consistency) Meter

Specifications

■Overall Specifications

Measurement method:

Microwave phase difference method

Measurement range:

condition occurs inside the pipe.

(c) A process where the pipe becomes unfilled

when the operation is stopped.

Cable for power supply	External Sync control
(Detector/converter)	contact input

DI / DO

Density (consistency) measurement output 4-20mA

Meter size

Span (*2)

Lower limit setting

range (4 mA)

Upper limit setting

range (20 mA)

Setting increments

50 mm (2”)	80 to 300 mm
	(3” to 12”)
2 to 50 %TS (*1)	1 to 50%TS (*1)
0 to 48%TS	0 to 49%TS
2 to 50%TS	1 to 50%TS

0.1%TS

AC power supply

Ground resistance 100 ohm or less

Cable for communication (Detector/converter)

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	Between detector and	10 m
cable	converter (*1)	(32.8 ft)
Communication	Between detector and	10 m
cable	converter (*1)	(32.8 ft)
Fuse	2A(T), 250 V	2
	(glass tube, 5.2 dia. x 20 mm)
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.

*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	80 to 300 mm
		(2”)	(3” to 12”)
	For the full
Density	scale value of	±2%FS	±2%FS
	2%TS or
(consistency)
	greater
determination
	For the full
repeatability			±4%FS
	scale value of
	less than 2%TS

*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

No. EJL- 106A