![](/images/new-backgrounds/1184363/1843631x1.webp)
![](/images/new-backgrounds/1184363/1843631xi2.webp)
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
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