我们厂轧钢热处理车间的电炉及盐浴炉,均用 XWB—101型电子电位差计进行控温。以往在控温时,将仪表的控制端直接接到控制线路中,当控制线路出现某些故障时,该仪表因表内微动开关被烧而不能工作,影响生产。为此,我们在仪表控制端和控制线路之间加上一个 CFO—10B 型交流接触器,克服了上述缺点。几年来实验证明,这种办法虽然因加了 Our rolling mill heat treatment plant furnace and salt bath furnace, are used XWB-101-type electronic potentiometer for temperature control. In the past when the temperature control, the control terminal of the instrument directly connected to the control line, when the control line appears some faults, the instrument was burned because the table micro switch can not work, affecting production. To this end, we add a CFO-10B type AC contactor between the instrument control terminal and control circuit to overcome the above shortcomings. Experiments show that over the past few years, although this approach due to added