Thyracont VD82EX, Operating Instructions Manual

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2 The VD82EX
2.1 For Orientation
These operating instructions describe installation and operation of products with
article number
VD82EX
The article number can be found on the product's type label. Technical
modifications are reserved without prior notification.
2.2 Delivery Content
Included in the delivery consignment are:
- VD82EX
-
Sensor head VSC421 with protective cover
- Protective case, VD82CASE
-
plug-in charging adapter 12V, VD8NEX or VD8NEXUS
- Screw-in hose nozzle, VD81SW1
- Operating instructions
2.3 Product Description
The VD82EX compact vacuummeter is measuring total pressure from
1050 - 1 mbar in explosive areas.
The unit is equipped with a detachable sensor head with piezoresistive ceramic
sensor and temperature compensated. The electrical connection of the sensor
head can be locked. The VD82EX can be mounted to suitable flanges, threads
or hose connections. The instrument can also be operated completely under
vacuum.
With the integrated memory-function it is possible to store and display minimum-
and maximum pressure.
Measurement Principle
The VD82EX compact vacuummeter is equipped with a piezoresistive ceramic-
sensor. Under the influence of pressure a thin diaphragm is bent, on it's back a
resistor-bridge is applied. The bending forces the measurement-bridge to come
out of tune, which is a measure for the applied pressure.