1pc. SBT-11 A Pancake Geiger Counter Tube Beta Gamma NEW Dosimeter an. sbm-20

Description

SBT-11A  Pancake Geiger counter, Beta & Gamma Detector. For  Dosimeter, radiometer. NEW (not used),  old stock. Tested
For sale is lot of 1 new Geiger SBT-11 SBT-11A . Tested.  Not used.
Very sensitive and fast counting geiger.
Technical Characteristics:
Voltage of start of counting -            260-320 V
Operating Current each section (uA)         0.5-1.1
Recommended Operating Voltage             400 V
Plateau Length/ Inclination - 80V/0.5%/V
Own Background (Pulses/s)                       0,6
Length       - 55 mm
Width         - 29 mm