Geiger Muller counter/GM counter j304/GM J304

(G-M)J304BY Counting tube, size:90*10mm,Detecting object B Y

Spec of (G-M)J304βγ Counting tube:

Outer Dim.                                    10mm

Total length                                    90mm

Material of outer case                           Glass

1.Counting rate voltage                           285-340V

2.Recommendation work voltage                   380V

3.Smallest plateau                               80V 

4.Largest background counting rate                 80times/min.

5.Smallest plateau slope                          10%/80V

6.Biggest initial voltage                           280-330V

7. γSensibility                                   380(60Co)(cps/uR/s)

8. Detecting object                               β  γ

Conditions of usage:

1.Load resistance                               5-10 megohm

2.Largest input circuit distributed capcity 

of counting instrument                         10 mmf.(mircomicrofarad)

3.Input capacity range of counting instrument       5-10 mmf.

4.Mobility range of environment temperature       -40--+50 C

5.Background                                 25cpm

Geiger Muller counter/GM counter j304/GM J304