HY200-D portable water level gauge HY200-A is based on the type of product upgrades improved. In function and appearance design, this product is better than similar imported products, the price is more cheap, affordable, more timely delivery, maintenance more convenient. First, the use of this instrument can accurately measure the water level, the operation is simple and convenient, just turn to shake when using the measured line slowly decentralization, when exposed to liquid level sensor, buzzer and lights on the reels start beeper, according to scale online survey indicated the depth of the liquid can be accurately drawn away from the orifice; lightweight portable device for water conservancy hydrology, geology and mining sectors: hydrological observation wells, geological drilling, wells, rivers, lakes, dams and Direct measurement of sea water, etc., in order to replace the current water level measurement methods commonly used summary measure of strong test clock, wires multimeter primitive and backward. Second, the technical parameters 1, the measured depth range: ≤700 m, the user can also customize the length according to the actual needs of the survey line 2, the exact scale line: Measuring resolution of 3 mm, the measured tensile wire corrosion: Measuring line Built-in wire steel ruler, straight drape without distorting the measurement of long-term deformation 4, the maximum measurement error: less than ± 0.05% (± 5 cm / 100 m) (secondary level gauge accuracy standards achieve national standards ISO 5, Probe diameter: ≤Φ20mm 6, the water level detection Power: 4 AA batteries ordinary 7, using the environment: -20 ℃ ~ + 60 ℃, relative humidity of 85% in August, galvanized steel core polyurethane insulation, more hard, wear-resistant long life