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JK—81型高低水位自动控制显示报警仪是河南孟县锅炉仪表厂1981年研制的产品,经该地区科研部门鉴定通过,并进行了多次改进。该产品在我地区一些单位的十多台锅炉上应用,起到了自动控制锅炉水位的作用,结果令人满意。该产品具有如下的特点:一、工作稳定,可靠。该仪表全部采用DG130 B NPN硅三极管,最高工作温度可达175℃,从而保证了高可靠性。根据在我地区多台锅炉上的实测,蒸汽的电阻值大约在600KΩ~700KΩ以上,通常炉水的电阻值约在10KΩ~40KΩ之间,而该仪表设定的继电器吸合电阻值为40KΩ,释放电
JK-81 high and low water level automatic display alarm device is Henan Meng County Boiler Instrument Factory developed in 1981 by the scientific research department of the region identified through, and made many improvements. The product in some units in my area more than 10 boilers applied to play a role in automatic control of boiler water level, the result is satisfactory. The product has the following characteristics: First, the work is stable and reliable. The instrument uses all DG130 B NPN silicon transistor, the maximum operating temperature up to 175 ℃, thus ensuring high reliability. According to the test on many boilers in our region, the resistance of steam is about 600K ~ 700KΩ, the resistance of boiler water is about 10KΩ ~ 40KΩ, and the relay’s pull-in resistance is 40KΩ. Release the electricity