power-fail logic 电源不足逻辑 ; 电力失败逻辑
Its Fail Safe High or Low will return the output to 3 psig for Direct Acting Mode or to 15 psig for Reverse Acting Mode if the power is lost, regardless of the logic selected.
它的故障安全高或低将返回输出到3直接代理模式PS IG中或15 PS IG中的反向代理模式，如果停电，不管逻辑选择。
Its Fail safe High or Low will return the field reversible output to 3 psig for Direct Acting Mode or to 15 psig for Reverse Acting Mode if the power is lost, regardless of the logic selected.
它的失败安全的高或低将返回外地可逆输出3直接代理模式PS IG中或15 PS IG中的反向代理模式，如果停电，不管逻辑选择。
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