Pfeiffer Vacuum FullRange PBR 260 - Technical Data; Measurement Parameters; Output Signal Characteristics

BG 5171 BEN / B (2017-02) PBR 260.oi 5
.
2 Technical Data
Measurement range (air, N
2
) 5×10
-10
… 1000 hPa
Overlapping range hot cathode – Pirani
high (default)
low
5.5×10
–3
… 2.0×10
–2
hPa
2.0×10
–3
… 8.0×10
–3
hPa
Accuracy
(10
-8
... 10
-2
hPa)
≈15 % reading
(after 5 min. stabilization)
Repeatability
(10
-8
... 10
-2
hPa)
≈5 % reading
(after 5 min. stabilization)
Gas type dependence → Appendix C
Switching on threshold (high) (default)
Switching off threshold (high) (default)
2.4×10
-2
hPa
3.2×10
-2
hPa
Switching on threshold (low)
Switching off threshold (low)
9.9×10
-3
hPa
1.3×10
-2
hPa
Emission current
(with decreasing pressure)
7.2×10
-6
hPa < p < 2.4×10
-2
hPa
p ≤ 7.2×10
-6
hPa
25 µA
5 mA
Emission current switching
25 µA  5 mA
(with decreasing pressure)
5 mA  25 µA
(with increasing pressure)
7.2×10
-6
hPa
3.2×10
-5
hPa
Current ca. 16 mA / ca. 4.0 W
Control input signal 0 V / 24 V, PLC level, high active
Duration max. 3 min., followed by automatic stop
In degas mode, the PBR 260 keeps supplying measurement values the tolerances
of which can be higher than during normal operation.
Output signal 0 … 10.2 V
Measurement range 0.774 V … 10 V
(5×10
-10
hPa … 1000 hPa)
Relationship voltage-pressure logarithmic, 0.75 V / decade
Error signals
0.3 V
0.5 V
→  23
• hot cathode error
• Pirani error
• electronics unit not correctly
mounted on sensor
Underrange
Overrange
0.5 V < U < 0.774 V
10 V < U ≤ 10.2 V
(measuring signal limited to 10.2 V by
software)
Minimum load
10 kΩ
Resistor (pin 1, U
max
= 4.25 V)
17.2 kΩ referenced to supply common
Measurement
Emission
Degas
(only if p < 7.2×10
-6
hPa)
Output signal
Gauge identification