L12536_15 Datasheet, PDF (3/4 Pages) Hamamatsu Corporation – ELECTROSTATIC CHARGE REMOVER USING PHOTOIONIZATION

CHARGE NEUTRALIZATION EFFECT
In photoionization, ions are generated over the entire area irradiated with soft X-rays. This improves the charge neutrali-
zation efficiency and also shortens the charge neutralization time.
ICHARGE NEUTRALIZATION EFFECT
GWhen 1 PhotoIonBar is used
400 300 200 100
mm mm mm mm
100 200 300 400
mm mm mm mm
GWhen 3 PhotoIonBars are connected
500 400 300 200 100
mm mm mm mm mm
100 200 300 400 500
mm mm mm mm mm
1s
2s
3s
4s
4 s or more
SOFT X-RAY SHIELDING
Using the PhotoIonBar requires "soft X-ray shielding"
during operation. However, the soft X-rays emitted from the
PhotoIonBar are only at a strength of about 3 to 4.9 keV
and so only need the following materials for 100 %
shielding.
Shielding
material
Thickness (mm)
Our other PhotoIonizers PhotoIonBar
SUS304 (stainless steel)
0.22
0.11
Aluminum plate
1.3
0.23
Acrylic plate
21.7
3.3
PVC
2.2
0.65
* A survey meter can be used to check soft X-ray leakage.
Please consult us for details.
SPECIFICATIONS
Measurement conditions
Charged plate: 150 mm, 20 pF
Charged voltage: 1 kV / 100 V
Distance between each PhotoIonBar: 100 mm
Temperature: 25 °C
Humidity: 50 %
TAPPC0172EB
SOFT X-RAY SHIELDING EFFECTS
TAPPB098EA
100
SUS304
PVC
Aluminum plate
Acrylic plate
80
60
40
20
0
0.00001 0.0001
0.001
0.01
0.1
1
10
THICKNESS (mm)
Note 1: Shielding effect is measured when distance between PhotoIonBar and
survey meter is 100 mm and shielding material is placed between them
(survey meter side).
Note 2: The surface of PVC (polyvinyl chloride) plates may blacken when directly
irradiated by soft X-rays from a very short distance (within 100 mm) for a
continuous period over several months, but this is not a problem. Such
type of changes will not occur in iron and aluminum material plates.
Parameter
Description / Value
Soft X-ray tube
Tube voltage (DC)
Beam angle
4.9 kV
120 °
Recommended distance to charged object
100 mm to 300 mm
Recommended distance between each PhotoIonBar
100 mm
Installation method
DIN rail mount
Connection to head unit
Control cable
Maximum connectable head units
10 units
Input voltage
DC 24 V ¹
Power consumption
4 W Max.
Guaranteed life
1 year
Life expectancy
15000 hours
Operating / storage temperature range
0 °C to +40 °C / -10 °C to 60 °C
Operating / storage humidity range
Below 60 % / below 85 %
NOTE: 1Power supply voltage is AC 100 V to AC 240 V (50 Hz / 60 Hz) when controller is used.