Pfeiffer Vacuum TPG 300 User Manual

BG 805 970 BE (0306) TPG 300.oi 29
Overrange: «or» and exponent indicating the range limit:
1234AB
mbar
Torr
Pa
A1
A2
B1
B2
PE
PE
010
If the upper measuring range limit is exceeded,
the cold cathode gauge can become contami-
nated if it remains switched on.
Underrange: «ur» and exponent indicating the range
limit:
1234AB
mbar
Torr
Pa
A1
A2
B1
B2
PE
PE
010
If the under range control is switched off the system
cannot distinguish between a gauge failure, cable inter-
ruption and underrange of a cold cathode measuring
circuit. «ur» is displayed in all cases.
If a measuring circuit is controlled by another measuring
circuit and either one is selected, the display automati-
cally changes over …
• When the measured value drops below the lower
threshold
• When the measured value exceeds the upper
threshold.
Overrange
Underrange
5.5.4 Automatic
Measuring Circuit
Switchover

Pfeiffer Vacuum TPG 300 Specifications

General

Display	LCD
Communication Interfaces	RS232, RS485, Ethernet
Temperature Range	0 to 50 °C
Accuracy	Dependent on connected gauges
Outputs	Analog, Relay
Operating Temperature	0°C to +50°C
Dimensions	96 mm x 96 mm
Type	Pirani Gauge Controller