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QMH type
Mass range [u]
QMA type
Rod diameter [mm]
QMH 400-1
128
QMA 410
16
QMH 400-5
300
QMA 430
8
512
QMA 400
8
QMH 402
16
QMA 410
16
Tbl. 43:
QMH and QMA types
15.3 Analyzer QMA 4x0
You can find the technical data of QMA 4x0 in the corresponding operating instructions for QMA 4x0.
15.4 Electrometer pre-amplifier EP 422
Parameter
Value
Installation location
screwed directly on analyzer QMA
Interfaces to
QMH, QMA
Connection (input)
TNC coaxial plug type
Connection (output)
D-Sub, 9-pin, pins
Input voltage
±16 V (±0.2 V, ≤ 10 mV ripple)
(by QMS 700)
Input current
±10 mA
(by QMS 700)
Quantity per system
max. 2
Storage temperature
-40 – +70 °C
Operating temperature
0 – +50 °C
Weight
0.15 kg
Tbl. 44:
Technical data, EP 422
18
1
8
.6
7
2
50
850
20
8
Fig. 54:
Dimensions EP 422
Dimensions in mm
Parameter
Value
Input current
±10 mA
Input impedance
100 kΩ
Output voltage
-10 – +10 V
Output current
≤ 2 mA
Drift
Offset doubling per 10 °C temperature increase
Noise
typically 2 × 10
-13
A
pp
unfiltered
Tbl. 45:
Amplifier data EP 422
Technical data and dimensions
67/70
Содержание HIQUAD QMG 700
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