... the power efficiency is higher(2)The ESP has long performance life. Because there is a double saver ... has good ability from wearing & long performance life. (5)Wash sand & dilute fluid periodicly & accordingly can extend pump ... LCD: Voltage, Amps, Frequency, Downhole fluid level, Downhole temperature, Wellhead temperature, Fluid production rate, Accumulative fluid volume, CBM production rate, Valve( ...