T19-mA型、T19-A型電流表，T19-V型電壓表（以下簡稱儀表）是電磁系張絲結(jié)構(gòu)攜帶式指示儀表。供直流電路和交流額定率為50-60Hz電路中測量電壓或電流用?！　x表按使用條件屬Ｐ組，適用于周圍環(huán)境溫度為23 10℃及相對濕度為25%-80%的條件下工作。參數(shù)表產(chǎn)品測量范圍與消耗：型　號測量范圍50Hz消耗(VA)T19-mA 10/20mA0.41/0.4125/50mA0.40/0.4050/100mA0.37/0.37100/200mA0.35/0.35250/500mA0.34/0.34T19-A0.5/1A0.34/0.341/2A0.30/0.302.5/5A0.51/0.515/10A0.51/0.5110/100A0.51/0.51T19-V7.5/15V3.75/3.7515/30V3.6/3.630/60V3.75/3.7575/150V4.5/4.5150/300V4.5/4.5300/600V7.5/7.5