INFICON MPG40x ATM to Ultra-High Vacuum Gauge - Manual (Page 6)

6
tina48e1-b (2008-10) MPG400-401.om
2 Technical Data
Measuring range (air, N
2
) 5×10 -9 … 1000 mbar
Accuracy (N
2
) ≈±30%
in the range 1×10 -8 … 100 mbar
Reproducibility ≈±5%
in the range 1×10 -8 … 100 mbar
Gas type dependence → Appendix B
Output signal (measuring signal)
Voltage range 0 … +10.5 V
Measuring range 1.82 … 8.6 V
Voltage vs. pressure logarithmic, 0.6 V / decade
(
→ Appendix )
Error signal <0.5 V no supply
>9.5 V Pirani measurement element
defective (filament rupture)
Output impedance
2×10 Ω
Minimum loaded impedance 10 k Ω, short-circuit proof
Response time (pressure dependent)
p > 10 -6 mbar
p = 10 -8 mbar
<10 ms
≈1000 ms
Gauge identification
85 k Ω referenced to supply common
Status Pin
6
p > 10 -2 mbar
Pirani-only mode
Low = 0 V
p < 10 -2 mbar
Cold cathode not ignited
Pirani-only mode
Low = 0 V
p < 10 -2 mbar
Cold cathode ignited
Combined Pirani / cold cathode
mode
High = 15 … 30 VDC
Lamp High voltage on (LED on)
Supply
DANGER
The gauge may only be connected to power supplies, instruments or
control devices that conform to the requirements of a grounded extra-
low voltage (SELV-E according to EN 61010). The connection to the
gauge has to be fused
1) .
Supply voltage at the gauge
15.0 … 30.0 VDC (ripple ≤ 1 V
pp
)
Power consumption ≤2 W
Fuse 1) ≤1 AT
The minimum voltage of the power supply must be increased proportionally to the
length of the sensor cable.
Voltage at the supply unit with
maximum line length
16.0 … 30.0 VDC (ripple ≤ 1 V
pp
)
1) INFICON controllers fulfill these requirements.