BG 805 981 BE (0201) QMG422.oi
9
The HF generator produces the high-frequency voltage
required for mass separation (
→
[1]).
QMH type
Range
QMA type
Rod ø
QMH 400-1
128 amu
QMA 410
16 mm
QMH 400-5
300 amu
QMA 430
8 mm
QMH 400-5
512 amu
QMA 400
8 mm
QMH 410-1
1024 amu
QMA 400
8 mm
QMH 410-2
2048 amu
QMA 400
8 mm
QMH 410-3
340 amu
QMA 410
16 mm
QMH 402
16 amu
QMA 410
16 mm
Note: In the following QMH 400 or QMA 400 always refers to all types if nothing
else is specified.
The 400 analyzer comprises the ion source, mass filter,
ion collector and housing (
→
[2]).
Ion collector types:
SEM 217:
90° off-axis with integrated Faraday
SEM 218:
90° off-axis with integrated Faraday and
separate conversion dynode CD
On request:
Faraday collector only
The ion source supply is installed in the QMS 422. and
supplies the ion source with the necessary operating
voltages.
•
Programmable potentials, short-circuit-proof.
•
Polarity reversible for positive and negative ions
•
Normal mode/degas mode
•
Suitable for all ion source type of the QMA 400
The high-voltage supply is installed in the QMS 422 and
supplies the SEM with the necessary high voltage.
HV 420:
For positive ions with SEM 217
HV 421:
For positive and negative ions with SEM 217
or for positive ions with the separate
conversion dynode of the SEM 218.
The mass filter electronics QME 125
→
[3] comprises
the ion source supply, high frequency generator and
SEM high voltage supply.
QME 125-1: Mass range 100
QME 125-2: Mass range 200
A special version with 6 m cable between QME 125-1
and QMA 125 is available.
The QMA 125 analyzer
→
[4] comprises the ion
source, mass filter, ion collector and housing.
3 Ion collector types are available:
Faraday, Faraday/Channeltron, 90° SEM
2.4 Family 400 components
QMH 400/410
QMA 400/410/430
IS 420
HV 420 / HV 421
2.5 Family 125 components
QME 125
QMA 125
