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用81型水质纯度仪(即电导度测定)测土壤含盐量的电测法,仍是我试验室当前生产中测含盐量较为成熟的一个方法。 用本法测土壤的含盐量的优点是操作手續简便,测定成果迅速,并节省了大量电力(不蒸干、烘干),且使生产效率提高了六倍以上。但本仪器测定含盐量也有其缺点——因仪器本身没有自动控温装置,在测定时需将每个试样一一的进行调温,到标准曲线所要求的温度方可测定(因电导度与温度高低有关),这样就给操作者带来了一定的困难(因调温手续繁杂),又不易控制)这样也阻碍了生产效率的提高。但经技术革新后,将一一调温改成自动控温,则解决了这一困难,而使生产效率又提高了四倍以上。下面将本仪器的具体操作与自动控温方法介绍给大家,以供参考,并欢迎给以批评指导。
With 81 type water purity meter (that is, the conductivity measurement) to measure the soil salt content of the electrical measurement method is still my laboratory production of salt measurement is more mature method. The soil salinity measured by this method has the advantages of simple operation procedure, rapid determination result, large amount of electricity saved (no steaming and drying), and the production efficiency is improved by more than six times. However, the instrument also has its own shortcomings of salt content determination - the instrument itself does not have automatic temperature control device, the determination of the temperature of each sample must be one by one, to the required temperature of the standard curve can be measured (due to conductance Degree and temperature level), so that the operator has brought some difficulties (due to temperature control procedures complicated), but also difficult to control) This also hindered the improvement of production efficiency. However, after technical innovations, changing the thermostat temperature to automatic temperature control solves the difficulty and increases the production efficiency by more than four times. The following specific operation of the instrument and automatic temperature control method introduced to you for reference, and welcome to criticize the guidance.