227a/227b | data sheet • 227b size 1: 0.3 microns; size 2: se-lectable - 0.5, 1, 3, or 5 • 227a size 1: 0.5 microns; size2: se-lectable - 0.7, 1, 3, or 5 • weight: 2.13 pounds (0.97 kg) • light source: laser diod • 0.3 or 0.5 micron sensitivity at 0.1 cfm • counts 2 sizes imultaneously • rs-232 to computer or外接印表機(jī) • battery operation: 8 hours continuous, nimh • data storage: 200 records • 可外接溫濕度計(jì)(需選購)。 • 通過ce及jis認(rèn)證。一年保固期。 • 校正為nist traceable可追溯美國國家標(biāo)準(zhǔn)規(guī)范。適合用在無塵室環(huán)境、filter leaking test、filter efficiency test氣體量測等，體積輕薄短小、重量輕攜帶及操作方便