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D
ESCRIPTION
2 D
ESCRIPTION
2.1 D
F
ESIGN AND
UNCTION
The Automatic Current Source AS 053/2 is placed in a housing so that it
may be used as a table device or installed in a rack.
On top and bottom, ventilating slits are placed through which air is
drawn in to cool the control and transformer. This air is exhausted
through the slits in the device´s back face. Ventilating is carried-out by a
built-in ventilator.
CAUTION!
Damage to property by overheating.
The device´s ventilating slits have to be kept free to perform the cooling.
To avoid heat build-up when installed in a rack care should be taken for
sufficient ventilation and distance to neighbouring instruments.
At the front face (figure 1) the mains switch, the operating area (film
keys) and the indicating units (LC display, LEDs) are placed.
The LC display shows the value of the current (required value) delivered
from the device´s active output to a vaporizer.
In connection with the keys the LEDs show:
• Present operation - external/internal current control,
• Status of the shutter - open/close,
• Output used actually (I or II).
As a failure indication an LED indicates the overheat (overtemp) of the
active transformer.
IMPORTANT!
In case of overheat the required value is switched to zero by the control.
After transformer´s cooling (LED goes out) the required value must be
adjusted anew.
18
, T
D
ECHNICAL
ATA
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