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重庆水文仪器厂生产的 ZLS—I 型直读流速显示器,能直接显示流速,使用简捷方便,但电磁计数器不十分可靠,经常由于手动复零等原因,卡阻不跳字、或乱跳字,出现机械故障,因而一些测站有不敢使用的情况。这里介绍的用电子计算器作为直读流速显示器,方法简单可靠,既不影响电子计算器的功能,又能充分发挥该厂直读流速显示器线路的作用。一般的电子计算器都有加常数的功能:要计算若干个数分别都加上某一常数时,只要第一次按下常数以后依次按动被加数及“等于键”就可以分别求得他们的和。例如:按动 c+1=在计算器显示1,再按键,显示2,即原来显示数1再加上常数1的和。如果继续按动键,可分别得到3,4,5,……n。计算器的这一特点,可以用来作为计数器使用(参见本刊1981年第1期(《使用计算器作为计数器的几点经验》)。现将改制方法介绍如下:
Chongqing Hydrological Instrument Factory production ZLS-I-type direct-reading flow rate display can directly display the flow rate, the use of simple and convenient, but the electromagnetic counter is not very reliable, often due to manual zero and other reasons, There are mechanical problems, so some stations have not dared to use the situation. The introduction of the electronic calculator as a direct-reading flow rate display, the method is simple and reliable, does not affect the function of electronic calculator, but also give full play to the factory direct-read flow rate display circuit. General electronic calculators have a constant function: To calculate the number of plus a certain number, respectively, as long as the first press the constant after pressing the plus and “equal to the key” can be obtained separately Their sum. For example: Press c + 1 = in the calculator display 1, and then press the key to display 2, that is, the sum of the original display 1 plus the constant 1. If you continue to press the key, you can get 3,4,5, ...... n. This feature of the calculator can be used as a counter (see Issue 1, 1981, “Some experience with a calculator as a counter.”) Now we introduce the restructure method as follows: