1. This portable digital turbine flowmeter has a high-definition display that shows both instantaneous and cumulative flow rates. 2. With LCD display, function and cumulative flow rate reading, easy to operate, read and adjust. 3. IPX7 waterproof rating; PCB circuit board, stable circuit, and high efficiency. 4. Modular design, suitable for use with output modules. 5. Suitable for testing , fuel oil, methanol, water, etc. Inner diameter:20mm Maximum working pressure:6RAR Working temperature:70 Single counting range:9999.9 Cumulative counting range:999999 Colour:Blue Material:Aluminum alloy Package Contents: 1 * Turbine flow meter 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.