Instruction Manual

8
tina46e1-a (2010-03) BPG402.om
2 Technical Data
Measurement range (air, O
2,
CO, N
2
) 5×10
-10
… 1000 mbar, continuous
Accuracy
(after 10 min. stabilization)
15% of reading in the range of
1×10
-8
… 10
-2
mbar
Repeatability
(after 10 min. stabilization)
5% of reading in the range of
1×10
-8
… 10
-2
mbar
Gas type dependence → Appendix B
Switching on threshold
Switching off threshold
2.4×10
-2
mbar
3.2×10
-2
mbar
Emission current
p ≤7.2×10
-6
mbar
7.2×10
-6
mbar < p < 3.2×10
-2
mbar
5 mA
25 µA
Emission current switching
25 µA ⇒ 5 mA
5 mA ⇒ 25 µA
7.2×10
-6
mbar
3.0×10
-5
mbar
Filaments
Number
Means of selection
2
Controlled by gauge (default) or via
interfaces (→  33,  [1] and  [9])
Settling time of measurement signal
after filament change
Filament status
<4 s
LED, relay contact (→  28)
Emission control mode
Automatic
Manual
Emission ON/OFF automatically
Emission ON/OFF by user via interfaces
(→  29)
Current (p <7.2×10
-6
mbar) ≈20 mA
Control input signal 0 V/+24 VDC, active high
(→  19, 20)
(control via RS232C →  30)
Duration <3 min., followed by automatic stop
In degas mode, the BPG402-Sx gauges keep supplying pressure readings, the
tolerances of which can be higher than during normal operation.
Degas acts only upon the active filament.
Output signal (measuring signal) 0 … +10 VDC
Measuring range +0.774 … +10 V
(5×10
-10
… 1000 mbar)
Relationship voltage-pressure logarithmic, 0.75 V/decade
(
→ Appendix A)
Error signal (→  42)
EEPROM error
Hot cathode error
Pirani error
≈+0.1 VDC
≈+0.3 VDC
≈+0.5 VDC
Minimum load impedance
10 kΩ
BPG402-Sx
42 kΩ resistor between Pin 10 and Pin 5
(sensor cable)
Measurement
Emission
Degas
Output signal
Gauge identification