Centronic GM-Tubes

(ZP Series)

The ZP series is ideal for low level gamma and x-ray detection. These tubes are useful for environmental monitoring, and for surveying areas which may have trace amounts of radioactivity. Manufacturers, such as Automess, utilize some these Geiger-Müller tubes for their survey meters.

Type
Sensitivity
Plateau
Counting Rate At
Dead Time
Back- Ground Shielded
Dose Rate Range
Band
Length
Threshold
Length
Slope
10-2mGy/h
(count/s)
 
(μs)
(count/min.)
(mGy/h)
α
β
γ
(mm)
(V) max.
(V)
(% /V) max.
max.
max.
typical
 ZP1200
 
 
40
400
200
0.04
28
90
10
10-3 – 102
 ZP1206
 
 
14.5
450
100
0.1
11
70
9
1.5 x 10-3 – 2 x 102
 ZP1210
 
 
140
400
100
0.15
110
200
70
3 x10-4 – 10
 ZP1220
 
 
240
400
100
0.15
180
210
90
2 x10-4 – 3
 ZP1220/EC *
 
 
240
400
100
0.15
180
210
90
2 x10-4 – 3
 ZP1220/01
 
 
240
400
100
0.15
180
210
60
2 x10-4 – 3
With compensating filter
ZP1221/01
 
 
240
400
100
0.15
180
210
60
2 x10-4 – 3
ZP1201
 
 
40
400
200
0.04
20
110
10
10-3 – 40
ZP1221
 
 
240
400
100
0.15
180
210
90
2 x10-4 – 3
ZP1301
 
 
7
500
100
0.30
340 ◊
13
1
10-1 – 1 x104
ZP1302
 
 
7
500
100
0.30
340 ◊
13
12 – 120
10-1 – 1 x104
ZP1313
 
 
16
500
150
0.15
1600 ◊
15
2
10-2 – 1 x103
ZP1321
 
 
28
500
150
0.08
9
55
12
3 x10-3 – 102
Ambient dose compensated
ZP1202
 
 
40
400
200
0.04
20
110
10
10-3 – 40
ZP1211/02    
140
400
100
0.15
110
200
60
3 x10-4 – 10
ZP1221/02
 
 
240
400
100
0.15
180
210
60
23 x10-4 – 3
ZP1304
 
 
7
500
100
0.30
340 ◊
13
1
10-1 – 1 x104
ZP1314
 
 
16
500
150
1.15
1600 ◊
15
2
10-2 – 1 x103
ZP1324
 
 
27
500
150
0.08
9
55
12
3 x 10-3 – 102
 Notes :
 * = End connector
 ◊ = Counting rate at 10 mGy /h
 ♦ = 137Cs

Direct Scientific - North America / tel 310 589 0601/ home /