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在HB-3000型布氏硬度计检定中,有时会出现这样的情况:接通电源,电源指示灯亮;但负荷全部加上时,加荷指示灯却不亮。这一般是变压器上的附加电阻损坏所造成。在没有新电阻更换的情况下,可以把线路改装一下,使接通电源后,电源指示灯和加荷指示灯同时亮;当负荷全部加上时,加荷指示灯熄灭(即红灯)。接线方法是,把电源指示灯的一个线头接6.3伏,另一头接地;同时,把加荷指示灯的一个线头也接6.3伏,另一头接在升降
In the HB-3000 Brinell hardness test, sometimes there will be such a situation: the power, the power indicator light; but when the load is added, the load indicator is not bright. This is usually caused by the additional resistance damage on the transformer. In the absence of a new resistance change, the line can be modified to make the power indicator light and load indicator light at the same time when the power is turned on; when all the load is added, the load indicator light (ie, red light). Wiring method is to turn on the power indicator light one line 6.3 V, the other end of the ground; the same time, the load indicator also a 6.3 V head, the other end of the lift