This product is based on dry type remote transmission photoelectric direct reading water meter, added the valve function. With the functions of water consumption signal processing, storage, remote transmission communication and long-distance control switch valve. The meters metrological characteristics conform to the requirements of CB/T 778-2007; the electrical characteristic conformto the requirements of CJ/T 224-2006.
Features:
No built-in battery, in normal times no need to add electricity
Instant add electricity instant read, directly output digital signal (not pulse) , Electromechanical reading coincide, no accumulative error.
The meters use the low-power design, m-bus communication modes, connection nonpolarity, construction and maintenance convenience.
With high anti-light interference ability, can work normally exposed in the strong sunlight
Can actively report the sensor breakdown information in order to avoid water disputes
Through the control center can remote transmission control open and close the valve
In order to prevent the valve stuck, the valve control meter with the valve warm-up function (timing carry on the warm-up actions)
Accuracy:
From the minimum flow-rate (Q1) inclusive to the lower zone of the transitional flow-rate (Q2) exclusive:±5%
Water temperature≤30℃ From the transitional flow-rate (Q2)
inclusive to the higher zone of the maximum flow-rate (Q4) exclusive:±2% (hot water meter ＞30℃ ±3%)
Electrical parameters:
Signaling frequency:483MHz
Transmit power:15dBm
Emission current:≤70mA
Communication frequency:Low speed: 4 hours; High speed: 11 seconds to 30 seconds
Communication distance:Low speed: ≤2500m; High-speed: ≤1000m
Average operating current:≤15μA
數(shù)字遠傳閥控水表
主要功能與特點:
1.無內(nèi)置電池,平時無需加電;
2.即時加電即時讀取,直接輸出數(shù)字信號(非脈沖),機電讀數(shù)吻合,無累積誤差;
3.表具采用低功耗設計,M-BUS通訊方式,連線無極性,施工和維護方便;
4.具有高強抗光擾能力,暴露在強光下可以正常工作;
5.能夠主動上報傳感器故障信息,避免用水糾紛;
6.通過控制中心,可以對閥門進行遠程開、關控制;
7.為防止閥門卡死,閥控表具體閥門熱身功能(定時進行熱身動作);
電氣參數(shù):
信號頻率:483 mhz
傳播的力量:15 dbm
發(fā)射電流:≤70 ma
通訊頻率:低速:4小時;高速度:
11秒到30秒
通訊距離:低速:≤2500m;高速:≤1000米
平均工作電流:≤15μa
