HAMAMATSU E989-05, E989-04, E989-03, E989-02, E989 Datasheet
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Magnetic Shield Cases
Magnetic Shield Cases E989 Series
Photomultiplier tubes are extremely sensitive to magnetic fields and exhibit
output variations even from sources such as terrestrial magnetism.
Hamamatsu E989 series magnetic shield cases are designed specifically
to protect photomultiplier tubes from the influence of such magnetic fields.
The E989 series uses permalloy, a material that has an extremely high permeability (approximately 10
case can be attenuated from 1/1000 to 1/10000 of that outside the shield
case (this ratio is called the shielding factor). The E989 series ensures a
stable output for photomultiplier tubes operating in proximity to magnetic
fields.
5
). The magnetic field intensity within the shield
TACCF0093
Features
●
Made of high-permeability permalloy (Ni: 78 %, Fe and others: 22 %)
●
Various sizes available with inner diameters from 12 mm to 138 mm
● Lusterless black paint finish
Specifications
Photomultiplier Tube Diameter Type No. Weight (g)
Side-on
Head-on
13 mm (1/2")
28 mm (1-1/8") *
10 mm (3/8")
13 mm (1/2")
19 mm (3/4")
25 mm (1")
28 mm (1-1/8")
38 mm (1-1/2")
51 mm (2")
76 mm (3")
127 mm (5")
E989-10
E989
E989-28
E989-09
E989-02
E989-39
E989-03
E989-04
E989-05
E989-15
E989-26
Internal Dia. D ( mm)
14.5
33.6 ± 0.8
12 ± 0.5
16 ± 0.5
23 ± 0.5
29 ± 0.5
32 ± 0.5
+1
44
-0
+1
60
-0
+1.5
80
-0
138 ± 1.5
Thickness t (mm)
0.5
0.8
0.5
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
* Photomultiplier tubes with HA coating extending to the base portion cannot be used. Please consult our sales offices for details.
Length L (mm)
47 ± 0.5
80 ± 1
48 ± 0.5
75 ± 0.5
95 ± 1
48 ± 0.5
120 ± 1
100 ± 1
130 ± 1
120 ± 1
170 ± 1
Dimensional Outlines (Unit: mm)
10
66
9
28
50
32
90
102
180
200
600
E989 E989-10
120°
120°
33.6 ± 0.880.8
3-M2.6
TACCA0117EB TACCA0118EA TACCA0119EC TACCA0120EC TACCA0121EC TACCA0122EC
E989-02 to -05, -09*, -39*
120°
120
120°
2437
± 1
80
10
°
D t
*
3- 3.5
*
No mounting hole is provided for
E989-09 and E989-39.
°
20
1
L
10
106
14.550.5
E989-15 E989-26 E989-28
3-No.5
120
9
90°
90°
80.0
47.0 ± 0.5
4- 4
68.0 ± 1.5
0°
.5
0
±
R35.0
°
90
+1.5
0.8
-
0
26 23
120 ± 1
5
138.0 ± 1.5
60.0 ± 1.5
40UNC
°
40
10
°
120
0.8
50
45 °
170 ± 1
1
10
22.0 ± 0.3
18.0 ± 0.1
2- 2.3
12.0 ± 0.5 0.5
6
48.0 ± 0.5
10
0.5
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