BERTHOLD TECHNOLOGIES LB 567, Руководство пользователя

Страница: 13 / 186

Chapter 2. General Information
MicroPolar 2 (++) LB 567 13
2.3
Intended Use
The LB 567 can be used to determine the water or moisture con-
tent and the concentration of virtually any material. The following
sensors and evaluation versions are available:
1. The flow cell is a tubular probe, with the microwave transmit-
ter and receiver being firmly welded onto the outside of the
tube. The tube is lined with Teflon to ensure smooth walls. The
flow cell is either installed directly into the existing pipeline
system or into a bypass.
2. The horn and spiral antennas are always used in pairs. Both
antennas are installed diametrically opposite on the conveyor
belt or in a chute. The transmitting antenna is installed so close
to the bottom side of the conveyor belt or to the measuring
chute that the emitted electromagnetic radiation passes al-
most completely through the product.
The evaluation unit is available in two versions: The standard
model MicroPolar 2 and the high dynamic version MicroPolar
2 ++. The Micro Polar 2 ++ requires a microwave signal attenu-
ation of at least 50 dB. The MicroPolar 2 must be used for lower
microwave attenuation.
During operation, the concentration meters MicroPolar 2 and
MicroPolar 2 ++ emit electromagnetic radiation in the frequency
range between 2.4 GHz and 2.5 GHz (range limitations depending
on local regulations in your country). Microwaves are not danger-
ous to human beings and the environment (power radiation
< 1 mW). The microwaves are emitted directed from the micro-
wave window; the product is not altered by the microwaves.
To ensure proper function of the measuring system, please pay
attention to the following:
TIP
The material to be measured may be electrically conductive
only to a limited degree.
The product must not contain any gas bubbles or gas bub-
bles have to be compressed with adequate pressure when
carrying out measurements in pipelines.
The ion concentration, for example, salt content must be
nearly constant.