Gamma Detectors (ZP Series)

Detection of gamma radiation at low dose rates. These tubes are suitable for use in environmental monitoring, and for sweeping areas which may have traces of radioactive sources on them.

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.	10-2mGy/h (count/s) ♦	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

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