NOTE: Usually we do not ship the liquid ultrasonic Transducer Coupling Agent because of air traffic control, if you have special requirements on gel, please tell us. Features:       Items        Performance & Parameter                              Meter     Principle     Transit time ultrasonic flowmeter        Accuracy    ± 1%        Display     4×16 character LCD with backlight, support the language  of Chinese, English and Italian        Signal Output    1 way OCT pulse output(Pulse width 6~1000ms, the default value is 200ms)        Data Interface    Insulate RS232 serial interface, upgrade the flowmeter  software by computer                       Pipe Installation Condition    Pipe Material    Steel, Stainless steel, Cast iron, Copper, Cement pipe, PVC,  Aluminum, Glass steel product, liner is allowed.        Pipe Diameter    15~6000mm        Straight Pipe    Transducer installation should be satisfied: upstream 10D,  downstream 5D, 30D from the pump.                             Measuring Medium    Type of Liquid    Single liquid can transmit sound wave, such as water, sewage,  oil, chemicals, plant effluent, beverage, ultra-pure liquids, etc.        Temperature     -30~160°C        Turbidity    Less than 10000ppm and little bubble        Flowrate     0 ~ ±7m/s        Working Environment    Temperature    main unit: -20~60°c; Transducer: -30~160°c        Humidity     main unit: 85%RH; Transducer protection level: IP67        Power Supply    3 built-in Ni-MH batteries 1.2V(for over 12 hours of operation).  Achieve to continuous measurement by connecting AC 90V - 260V adapter.         Power Consumption    1.5W        Housing Material    Inflaming retarding ABS        Main unit Weight    390g      Advantages:  High accuracy measuring: Accuracy: ±1%, linearity: 0.5%, repeatability: 0.