SI8B Ci-8B Pancake Geiger Counter Tube Block Beta Gamma NEW sbm-20 1m long wand

Description

SI8B  Pancake Geiger Counter Tube Block Beta Gamma NEW
For  Dosimeter, radiometer. NEW (not used),  old stock. Tested
BLDB-35-01 Special geiger counter block with  geiger tube inside si8b  in nice case with all socets and resistors
tested working well.
With nice holder that can be regulater, comfortable in use.
They are new not used have 21pc.
Capble is cut at the end, so you can connect your socet tupe.
For sale is lot of 1 Tested.  Not used.
Technical Characteristics or Si8B tube:
Working Voltage        360-440V
Plateau Inclination  0.3%/V
Max. working current  18.2
µA
Nominal working current is 7.6 µA (390V / 5.1 MOhm = 0.0000076 A)
Max.
counting
speed    3400 pulses/sec
Efficiency of logging Beta   50-85%
Own Background   2 Pulses/s
Working Temperature Range -50 +65 С
Total weight of block 920 gramm.
I ship with tracking number, by air mail
My items are always packed carefull
If you have any questions, please contact me.