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QDZ系列气动单元组合仪表在使用、维护和调校过程中所用的标准仪器,传统的办法是使用以水银为工作液的U形管来测量其输入输出信号。但玻璃U形管易于破碎,而在常温下水银蒸汽又易挥发,损害人体健康。我厂QDZ系列气动单元组合仪表输入输出信号均为0.2～1.0kg/cm~2,最小水银柱压差为147mmHg,最大水银柱压差为738mmHg,即使用0～1500mmHg压差的U形管也得小心谨慎地给其空气压力,否则就使水银冲出。例如校验一台QTL-500型的气动比例调节器,就需要用三至四只U形管,安装操
The standard equipment used in the QDZ Series Pneumatic Unit Instrument cluster during its use, maintenance and calibration has traditionally used U-tubes with mercury as the working fluid to measure its input and output signals. However, the glass U-shaped tube is easy to break, while at room temperature, the mercury vapor is volatile and damages human health. I plant QDZ series pneumatic unit combination meter input and output signals are 0.2 ~ 1.0kg / cm ~ 2, the minimum mercury differential pressure 147mmHg, the maximum mercury differential pressure is 738mmHg, even with 0 ~ 1500mmHg U-shaped pressure differential pressure is also Be careful to give it air pressure, or else get out of mercury. For example, to check a QTL-500 type pneumatic proportional regulator, you need to use three to four U-shaped tube, installation operation