ETCR4800 Oli Pumping Multi-purpose Meter 0V~700V 0.0mA~300A Features: Measurement of oil electricity parameters: current, voltage, frequency, voltage and current phase, breaking resistance and pumping unit maximum current, the down stroke stroke ratio, stroke time, the strokes per minute frequency, and determining the working condition of the pumping unit, as the site of the pumping well the electrical parameters of power balance time monitoring, provides a safe and accurate instrument oil and convenient. 2.Charging interface, configuration charger. 3.The test line with power cable, rod plug and holder have insulation protection. 4.Insulated anti slip jacket. 5.RS232 interface, can store 1000 sets of data, upload data to the computer through the system software, to achieve historical data query, read, analyze, save, report, print, etc.. 6.Administrators set function, password access, including the clock settings, well number settings, password settings. technical specifications Function At the same time for the measurement of electric parameters of oil: current, voltage, frequency, voltage and current phase, breaking resistance and pumping unit maximum current, the down stroke stroke ratio, stroke time, stroke times per minute Power Supply DC7.2V (1.2V 5 section 6 rechargeable battery) Jaw size Circular current clamp: 35mm * 40MM. Voltage Quantity limit: 0V 700V ~ AC resolution: 1V precision: + (1.5%rdg+3dgt) Electric current Quantity limit: 0.0mA 300A ~ AC resolution: 0.1mA precision: + (1.5%rdg+3dgt) Phase Limit: 0 ~ 360 degree resolution: 1 degree accuracy: + 3 Resistance Limit: 0.00Kohm ~ 20.0Kohm resolution: 10ohm precision: + (2.0%rdg+3dgt) Frequency Limit: 10.0Hz ~ 70.0Hz resolution: 0.1Hz precision: + (2.