Thyracont VD83, Operating Instructions Manual

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2 The VD83
2.1 For Orientation
These operating instructions describe installation and operation of products with
article numbers
VD83.
The article number can be found on the product's type label. Technical modifica-
tions are reserved without prior notification.
2.2 Delivery Content
Included in the delivery consignment are:
-
VD83
- Protective cover
-
Operating instructions
Available Accessories:
-
Protective case, VD8CASE
-
External plug-in power supply 12V, VD8N2
-
AlMn block battery 9V, VD8ALK
-
Windows-Software VacuGraph, VGR
-
Interface cable USB, WUSB0002
2.3 Product Description
The VD83 compact vacuum meter is measuring total pressure in the range 100 –
5x10
-4
mbar.
The unit is equipped with a Pirani sensor and temperature compensated. It can
be mounted to suitable flanges. When using a suitable battery, the instrument
can also be operated completely under vacuum.
Pressure is displayed continuously over the whole measurement range.
Due to the integrated data logger functionality it is possible to store up to 2000
measurements in the vacuum meter. By means of the USB interface you can
transmit the stored measurement data to a PC or record measurements online
on PC as well.
Measurement Principle
The VD83 is equipped with an internal Pirani sensor, which uses the heat con-
duction of gases for measuring vacuum. In a bridge circuit the filament is heated
to constant temperature, the necessary bridge voltage is a measure for total gas
pressure.