Bl This standard establishes the construction characteristics and operating conditions to which the lanterns must respond. with dry leads, assembled in a unit, intended for use in hazardous environments, according to classes I and II of the IRAM-IAP A 20-1 standard.
IRAM-IAP A 20-2-1961 history
1961IRAM-IAP A 20-2-1961 Argentina Petroleum Electrical Equipment Research Center lantern for use in explosive environments (with dry batteries)