44
12 Operation
12.1 Operation with single probe
The single probe is made up of one individual rod� Operation with a single rod is
suited for the detection of aqueous media, in particular of heavily soiled aqueous
media�
For correct function with single probe, the unit needs a sufficiently large
metal launching surface / launching plate� It is necessary for transferring
the microwave pulse to the tank with optimum transmission power�
For installation in closed metal tanks / metal bypass pipes, the tank lid
/ upper pipe section serves as a launching surface� For installation in
open metal tanks, tanks made of plastic or metal tanks with plastic lids
a sufficiently large fixing plate, a metal plate or similar must be used (→
7�6�3) / (→ 7.6.4)�
For operation with single probe, minimum distances to tank walls and
structures in the tank must be adhered to (→ 7.2)�
12.2 Operation with coaxial probe
The coaxial probe is made up of an inner rod and an outer probe pipe (coaxial
pipe)� The rod is centred in the coaxial pipe by one or several spacers�
In case of operation with a coaxial probe media with a low dielectric constant (e�g�
oil and oil-based media) are detected in addition to aqueous media�
In addition, the following applies in case of operation with coaxial probe:
• No launching plate is required�
• No minimum distances to tank walls and objects in the tank need to be
observed�
• No tank adjustment is necessary�
Observe application area (→ 5.2)
12.3 Function check
After power-on the device is in the operating mode� It carries out its measurement
and evaluation functions and generates output signals according to the set
parameters�
► Check whether the unit operates correctly�
To Next Page
Loading...