PK-303S，化工专用隔爆型热电阻WZPK-304S，WZPK-305S，WZPK-306S，WZPK2-305SA，WZPK2306SA，WZPK-403S，WZPK-404S，WZPK-405S，WZPK-406S，WZPK2-405SA，WZPK2406SA，WZPK-503S，WZPK-504S，WZPK-505S，WZPK-506S，WZPK2-505SA，WZPK2506SA，WZPK-123S，WZPK-124S，WZPK-125S，WZPK-126S，WZPK2-125SA，WZPK2-126SA，WZPK-223S，WZPK-224S，WZPK-225S，WZPK-226S，WZPK2-225SA，WPK2-225SA，WZPK2-226SA，WZPK-323S，WZPK-324S，WZPK-325S，WZPK-326S，WZPK2-325SA，WZPK2326SA，WZPK-423S，WZPK-424S，WZPK-425S，WZPK-426S，WZPK2-425S