The SMC-1850 High Temperature Geophone has been tested at 200°C for more than 300 hours with no loss in performance specifications.
YB-15A-2400CR geophone heerkulka sare waxaa lagu tijaabiyay 200 digrii C muddo ka badan 300 saacadood, si isdaba joog ah, heerkul ah 215 degree C oo aan lahayn astaamo lagu garto kala soocidda.