This standard specifies electronic personal radiation dose meters (hereinafter referred to as dosimeters) that measure external personal exposure dose equivalents (rates) of X-rays, gamma-rays, beta-rays, and neutrons.
JIS Z 4312:2002 history
2013JIS Z 4312:2013 Direct reading personal dose equivalent meters for X, gamma, beta and neutron radiations
2002JIS Z 4312:2002 Direct reading personal dose equivalent (rate) meters and monitors for X, gamma, beta and neutron radiations
1990JIS Z 4312:1990 Personal alarm dosemeters for X-rays and gamma-rays