CV2138

GEC CV2138 geiger muller tube

This tube measures 70x36mm overall.

This tube is marked No. 8938, Volts 1410, Window weight 7MGm/cm2. Equivalent to GM4 this uses ethyl formate as a quenching agent which gives better plateau characteristics and temperature coefficients.

Plateau length average	250V
Plateau slope average	0.05%
Operating voltage limits	1250 to 1450V
Count life	6x10^8
Shileded background counts	7 to 15 per minute
Signal output	220/100+C (*)
Dead time	100&micrp;s
Recovery time	250µs

*: C = the total capacitance across the tube in pF

Thanks to Roy Johnson for information.

This file was last modified 15:42:29, Saturday November 12, 2011