Consistency of LED display screen is the most concern for all screen manufacturers. High-end LED screen manufacturers introduce point-by-point correction and color uniformity correction technology to compensate for the lack of consistency of LED lamps. Consistency The parameters such as brightness, wavelength, splitting ratio, eccentricity, consistency of the card point, light distribution, and viewing angle of the LED lamp are required to be strict. Therefore, the elliptical lamp package should be inserted in line with the brightness, wavelength, splitting ratio, viewing angle, and the same color.
The specifications of the elliptical LED tube, one of the core components of the high-end display, are demanding, such as the brightness, wavelength, light shape, RGB light distribution, attenuation, and failure rate of the tube.
The parameters such as light distribution, RGB light distribution, eccentricity, and card point consistency failure rate are indispensable. Stable process conditions and strict quality control systems ensure high quality products. Brightness: R>1000mcd, G>2000mcd, B>500mcd; Wavelength: 3nm bin; Spectral ratio: 1:1.1; Viewing angle: horizontal direction 105±5°, vertical direction 55±5°; Light distribution: relative light of the same color Strong light distribution curve is controlled within 10%, RGB relative light intensity distribution curve is controlled within 10%, and failure rate is less than three hundredths. To meet such requirements, we must ensure the quality and service life of LED displays. However, we must strictly control the source materials of LED displays to ensure the quality of LED lights in order to produce high-end LED displays.

Others Water Meter

Bottom layer communication: M-BUS/485 collector and measurement meter transmit data by M-BUS/485 line with 4 channels, and can connect the meter according to any topological structure. Build in backup battery, could works for 48 hours normally, and the data can be saved for 10 years if power is cut off.

Middle layer communication: Middle layer communication means the communication between the concentrator and collector. This communication is by wireless RF way, no need of communication line. The wireless communication distance between the concentrator and collector can be about 3km at wide open area.

Upper layer communication: Communication methods indicate below can be selected between concentrator and management center:

(a) GPRS Communication Mode

(b)Telephone Line Communication Mode

(c) RS232 Communication Mode

(d) Ethernet Communication Mode

Dn50 Water Meter,Band Ultrasonic Water Meter,Digital Brass Body Ultrasonic Water Meter,Large-Caliber Ultrasonic Water Meter

SUZHOU YUEDA VALVE CO., LTD. , https://www.jsyuedavalve.com

May 11, 2024