SI22G

The SI-22G self-extinguishing Geiger-Muller counter is designed to register gamma radiation, it belongs to the section of vacuum devices and lamps for various purposes. By design, it consists of a vacuum-tight, rigid shell, inside which there is no oxygen.

SI22G is equivalent to SBM-20, STS-5, SBM-20-1

Technical specifications:

• Operating voltage: from 380V to 480V
• The length of the plateau of the counting characteristic: is at least 100V
• Count start voltage: from 285V to 335V
• The slope of the plateau of the counting characteristic: is 0.125%/V
• Dosimetric characteristics of products counters SI-22G:
  – counting rate (N) – 3700 imp/min; 540 imp/µR;
  – maximum counting rate (Nmax) – 3000 imp/min;
  – level of natural background (Nf) – 75 imp/min;
  – maximum dose rate (Pmax), short-term – 7 R/h.
• The body is metal
• Cathode – stainless steel
• Design SI22G – double-ended
• Load resistance: from 9 MOhm to 13 MOhm
• The largest parasitic capacitance allowed in the input circuit: 10pF
• Transient input capacitance: from 7pF to 15pF