6
BG 5171 BEN / B (2017-02) PBR 260
Pirani
HV
ATM (<ATM> button)
Zero point adjustment (<ATM>
button)
automatic adjustment by hot cathode
system at p = 1 … 3×10
-3
hPa
adjustment via <ATM> button (keep
button depressed for at least 5 seconds)
at atmospheric pressure
adjustment via <ATM> button (keep
button depressed for at least 2 seconds)
at ≤1×10
-4
hPa
Hot cathode factory calibrated, readjustment not
required
DANGER
The gauge may only be connected to supply and evaluation units
which conform to the requirements of a grounded protective extra-low
voltage (PELV). The connection to the gauge has to be fused.
1)
Voltage at gauge 20 … 30 V=
2)
max. ripple 2 V
Power consumption
standard
degas
emission start (< 200 ms)
≤ 0.5 A
≤ 0.8 A
≤ 1.4 A
Power consumption ≤ 16 W
Fuse necessary
1)
≤ 1.25 AT
Voltage at the supply unit with
maximum cable length
21 … 30 V
max. ripple 2 V
Electrical connection Hirschmann compact connector
type GO 6, 6 poles, male
Tightening torque ≤ 0.2 Nm
Cable 5 poles plus shielding
Cable length max. 35 m (0.25 mm² conductor)
50 m (0.34 mm² conductor)
100 m (1.0 mm² conductor)
Vacuum flange-supply common conductively connected
Signal common-supply common conducted separately; only differential
measurement admissible due to high
current consumption
Materials on the vacuum side
housing, supports, screens
feedthrough
isolator
cathode
cathode holder
Pirani element
stainless steel
NiFe nickel plated
glass
iridium, yttrium oxide
molybdenum
tungsten, copper
Internal volume
DN 25 ISO-KF
DN 40 ISO-KF
DN 40 CF-R
≤ 24 cm
3
≤ 24 cm
3
≤ 34 cm
3
Pressure max. 200 kPa (absolute)
1)
The MaxiGauge™ fulfills these requirements.
2)
The minimum voltage of the power supply must be increased proportionally to the length of the sensor
cable.
Adjustment
Supply
Sensor cable
Grounding concept
Vacuum
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