... 3.ISO9001 1.The main structureDown hole equipment:Sensor, Frequency electrical submersible motor, protector, gas-liquid separator, multi ... cable junction box, water tank, smart control unit, A frequency control unit, B water quality control unit. 2. special features (1) ... various well.(6)Main page on LCD: Voltage, Amps, Frequency, Downhole fluid level, Downhole temperature, Wellhead temperature, Fluid ...