Adjustment of the generators
© Elma GmbH & Co KG SM/Transsonic_LC/1104/D
97
16.6 Adjustment on TS540 – T700H; LC130H
Since 1991 the generators have been equipped with an
adjustment coil which makes the adjustment of the graphs
easier.
Generators made before 1991 are difficult to adjust and can be
instable when operated. Technical support for these generators
is no longer available.
In order to check the adjustment proceed as follows:
How to proceed
1. Measuring set-up as described in section 16.
2. Connect the probes as shown in Illustration 16.5.
3. Slowly increase voltage; observe the oscilloscope and the
current consumption during the process.
4. Check the graph and compare with possible graphs as
indicated in Illustrations 16.2.1 - 3.
If graph and phase are as indicated in Illustration. 16.2.1.,
no modification is necessary.
5. If there is a deviation of the graph as compared to
Illustration 16.2.1. turn the ferrite core at the adjustmen coil.
Observe the change of the phase position indicated at the
oscilloscope.
6. Check the generator power consumption and compare with
the values indicated in the table in section 16.3.
In case of deviation see instructions given in section 16.2.
7. Secure the ferrite core after adjustment with silicone etc.
Perfect adjustment
• The transistors do not heat up (one or both).
• There are waves on the surface of the bath.
• There are no streamers on the tank floor.
• The ultrasonic noise is uniform and not shrill.
• The performance changes only little when a beaker, etc. is
immersed in the tank.
The phases remain stable.
To Next Page
Loading...
