... , production and instrument of RV-100 series Electromagnetic Flowmeter Converter implement. Low-frequency square ... handing telecontrol keyboard,all the functions of far-untouched controlling converter. 1.3 Normal operating conditionsAmbient Temperature Ranges: -10/+ ... ,450,500,600,700,800,900,1000,1200,1400,1600,1800,2000,2200,2400,2600,2800,3000; request of ...