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SBM20 ???-20 CTC-5 STS5 ???-5 Counter Tube Beta Gamma GM Radiation Detector NOS, US $14.99 – Picture 0
SBM20 ???-20 CTC-5 STS5 ???-5 Counter Tube Beta Gamma GM Radiation Detector NOS, US $14.99 – Picture 0

Sbm20 ???-20 Ctc-5 Sts5 ???-5 Counter Tube Beta Gamma Gm Radiation Detector Nos

US $14.99

  • Zurich, Switzerland
  • Jan 30th
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You are bidding on 1 piece of SBM-20 SBM20 ???-20 ???20 Geiger-Muller radiation counter, NOS "new old stock" condition without a box (tube taken from big 100pcs factory pack). The item is in excellent working and cosmetic condition. Russian SBM-20 geiger mueller counter is designed to detect betta and gamma rays. GENERAL SPECIFICATIONS Gas Filling    Ne + Br2 + Ar Cathode Material    Stainless Steel, 50 mkm Maximum Length (mm)    108 Effective Length (mm)    91.0 Maximum Diameter (mm)    11 Effective Diameter (mm)    10 Connector    Pin Operating Temperature Range 0C    -60 to +70 WALL SPECIFICATIONS Areal Density (mg/cm2)    40 Thickness (mm)    0.05 ELECTRICAL SPECIFICATIONS Minimum Anode Resistor (meg ohm)    1.0 Recommended Anode Resistor (meg ohm)       5.1 Recommended Operating Voltage (volts)    400 Operating Voltage Range (volts)    350 - 475 Initial voltage (volts)    260 - 320 Plateau length (volts)    at least 100 Maximum Plateau Slope (%/100 volts)    10 Minimum Dead Time (at U=400V, micro sec)    190 Working range (mkR/s)    0.004 - 40 Working range (mR/h)    0.014 - 144 Gamma Sensitivity Ra226 (cps/mR/hr)    29 Gamma Sensitivity Co60 (cps/mR/hr)    22 Inherent counter background (cps)    1 Tube Capacitance (pf)    4.2 Life (pulses)    at least 2*1010 Weight (grams)    10 I try to keep the lowest prices for this counters; tell me where you can buy cheaper and we'll deal :) Also I have many different types of radiation counters, photomultipliers, arc and spark lamps, electron tubes, generator tubes, indicator tubes, roentgen tubes and rectfiers - take a look at my listings. If you need any specific type of russian electron/ion tubes, let me know. Worldwide registered shipping - Free! Happy bidding!
Condition New other (see details) :
A new, unused item with absolutely no signs of wear. The item may be missing the original packaging, or in the original packaging but not sealed. The item may be a factory second or a new, unused item with defects. See the seller’s listing for full details and description of any imperfections.
Seller Notes “NOS new old stock, without a box”

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