Ultrasonic level gauges are now widely used. Using the characteristics of ultrasonic to measure data, its accuracy is relatively high. Some people do not know how to set the parameters when using the ultrasonic level meter. Next, teach you how to set the parameters of the ultrasonic level gauge.1. How to set the parameters of ultrasonic level gauge?Install the ultrasonic liquid level timer, set the distance l from the probe to the instrument memory to “water level=0″ by pressing the button. The meter reads the parameters L, D and H from the memory, and calculates the distance L from the probe to the “water level=0″ (L=H D). In the actual measurement, the liquid level h changes in real time, and the instrument calculates the liquid level distance D according to the measurement time t, so as to obtain the current liquid level h=l-D.If the water level of a pool changes between 0-2.350 m, 0 m corresponds to 4 mA, 2.35 m corresponds to 20 mA, first, the ultrasonic level gauge should be installed at any position above the highest water level 0.3 meters (blind zone), that is, 2.65 meters above s position. According to the measurement, the actual distance between the lowest water level of 0 meters and the probe of the ultrasonic level gauge is 2.82 meters. At this time, the input setting of 4mA (0V) should be 2.82m, and the input setting of 20mA (5V, 10V) should be 0.47m (that is, 2.82-2.35m).Ultrasonic level gauge2. What are the steps for parameter setting of ultrasonic level gauge?1. Turn on the power and aim at a flat target to correct the distance;2. Press K1, LED displays A1, and it is calibrated to 4mA (the secondary meter can be connected in series with an ammeter).3. Press K1, the LED displays A2, and the calibration is 20mA (5V, 10V).Note: The parameters set in the above three steps have actually been corrected at the factory, but they need to be reset when the factory presets are half restored.
Post time: 21-09-21