BERTHOLD TECHNOLOGIES LB4710-050, User Manual

Page: 108 / 227

Chapter 13 Technical Data
Mini-Switch LB 471
108
13.3
Shieldings
LB 7440 F
LB 7440 EF
LB 7442 F
LB 7442 EF
LB 7444
Approx. shielding thickness
(mm lead)
67 97 132
Approx. attenuation factor
for Cs-137
for Co-60 700
30
16000
180
650000
1800
Dose rate on the surface of
the shielding (µSv/h)
with Cs-137 (A in MBq)
with Co-60 (A in MBq) 1.6 * 10 -2 * A
1.6 * A
4.3 * 10 -4 * A
0.14 * A
6.5 * 10 -6 * A
8.1 * 10 -3 * A
Dose rate in 1m distance
from the surface of the
shielding (µSv/h)
with Cs-137 (A in MBq)
with Co-60 (A in MBq)
1.4 * 10 -4 * A
1.1 * 10 -2 * A
5.4 * 10 -6 * A
1.7 * 10 -3 * A
1.1 * 10 -7 * A
1.5 * 10 -4 * A
Radius of controlled area, cm
with Cs-137 (A in MBq)
with Co-60 (A in MBq)
0.74 * A1/2
6.5 * A1/2
0.15 * A1/2
2.6* A1/2
0.07 * A1/2
0.82* A1/2
Dimensions (W x H x D), cm
with pneumatic locking
drive
18 * 20 * 20
18 * 20 * 39
24 * 27 * 27
24 * 27 * 46
30 * 39 * 38
30 * 39 * 57
Operating temperature max. 200 °C max. 200 °C max. 200 °C
Weight 31 kg 81 kg 170 kg
13.4
Pneumatic Locking Drive
Compressed air:
Min.
Max.
Connection
4 bar
7 bar
G 1/8
Air quality clean, oil-free
Operating
temperature -20 ... +80 °C
Signaling
OPEN/CLOSED
Option I
Option II
Option III
IP 65, 2 contact, 48 V DC, 1A
2 contact, max. 250 V AC, 1A, EEx e II T6
2 proximity switches, intrinsically safe feed
required