3 Product description
3.1 Function
The gauge has two measurement systems:
● Pirani measurement system
● Cold cathode measurement system according to the inverted magnetron principle
The Pirani measurement system is always switched on. The gauge only activates the cold cathode
measurement system controlled by the Pirani measurement system at pressures p < 1 × 10
-2
hPa. Spe-
cific linking of both measuring systems ensures that the measuring systems generally behave as one
standardized measuring system for the user. The measuring signal is logarithmically dependent on the
pressure across the entire measuring range. The gauge applies the optimum measuring configuration to
the respective pressure range.
10
-4
hPa
10
-2
hPa
1000 hPa
5×
10
-9
hPa
Cold Cathode
Pirani
Fig. 1:
Measuring configuration
3.2 Status display
The LED on the top of the gauge indicates the operating status of the gauge
1
Fig. 2:
Light emitting diode
1 Green LED
3.3 Identifying the product
You will need all the data from the rating plate to safely identify the product when communicating with
Pfeiffer Vacuum.
1. Read the data on the product rating plate.
2. Record this data.
3. Always have all rating plate specifications to hand.
3.4 Scope of delivery
The shipment includes the following parts:
● Gauge
● Short instructions
Product description
14/50
