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为使老产品更新换代,并与上海地区DDZ-Ⅲ型仪表配套,上海自动化仪表五厂研制的 UTD-C 系列浮筒液位(界面)变送器于一九八五年底在上海通过了技术鉴定。
In order to make the replacement of old products and support the DDZ-Ⅲ instrument in Shanghai area, the UTD-C series float level (interface) transmitter developed by Shanghai Automation Instrumentation Factory passed the technical appraisal in Shanghai at the end of 1985 .