The Vd81; For Orientation; Delivery Content; Product Description - thyr cont VD81 Betriebsanleitung

2 The VD81

2.1 For Orientation

These operating instructions describe installation and operation of products with
article numbers
VD81.
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:
- VD81
Protective cover
-
- Operating instructions
Available Accessories:
- Protective case, AVD8CASE
External plug-in power supply 12V, AVD8N2
-
- Plug-in power supply and rechargeable NiCd-battery, VD81NETZ
AlMn block battery 9V, AVD8ALK
-
Screw-in hose nozzle, VD81SW1
-
Windows-Software VacuGraph, AVGR
-

2.3 Product Description

The VD81 compact vacuum meter is measuring total pressure in the range
1600 – 1 mbar.
The unit is equipped with a piezoresistive ceramic sensor and temperature
compensated. It can be mounted to suitable flanges, threads or hose connec-
tions. When using a suitable battery, the instrument can also be operated com-
pletely under vacuum.
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 VD81 is equipped with a piezoresistive ceramic-sensor. Under the influence
of pressure a thin diaphragm is bent, on its back a resistor-bridge is applied. The
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