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目前用于野外机台现场测定失水量的仪器为1009型。该仪器为重锤油压式，每次测定需往活塞筒内注满机油，依靠机油将重锤的压力传递到泥浆液面上。根据使用中普遍反应，使用机油存在不少弊端。一、费用大。每次测定需要1两机油，每日测定3次，每月需9—10斤。以不可二次利用的实际消耗，每月至少需要5—6斤。二、易沾污。仪器、操作者的双手、记录笔和记录簿都不免常沾污上油泥，清洗不方便。通过反复的试验对比，1009型失水量仪测定用机油用以下办法替代是可行的：
The 1009 type instrument is currently used to measure the amount of water loss in field machines. The instrument is a heavy-hammer hydraulic type. Each measurement needs to fill the piston barrel with oil and rely on the oil to transfer the pressure of the weight to the surface of the slurry. According to the general reaction in use, the use of motor oil has many drawbacks. First, the cost is big. Each measurement requires 1 engine oil, 3 times a day, 9-10 kg per month. The actual consumption of non-secondary use requires at least 5-6 pounds per month. Second, easy to stain. Instruments, operator’s hands, stylus pens, and logbooks are not always contaminated with oil, which is inconvenient to clean. Through repeated tests and comparisons, it is feasible to replace the oil used for the determination of the Type 1009 dehydration meter by the following methods: