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最近,市民顾女士发现自家水费节节高。带着疑问的顾女士对比后发现,相同水流下,自家水表表针转速比邻居家的水表快了许多。在自来水公司专业工作人员的查看和建议下,无奈的顾女士更换了新水表,而这只超速水表已经“服役”近8个月。作为日常家庭生活的组成部分,水表的问题越来越突出。国家质检总局抽查结果显示,压力损失、示值误差、连续流量、静压力项目等影响冷水水表合格度的主要指标都多多少少存在问题。据了解,由于水表长期运行于受压条件下,因此水表产品的密封性能和耐压强度至关重要。国家标准要求,在压力试验中,对于公称压力为1MPa的水表,应在水压1.6MPa下持续使用15分钟,在2MPa下持续1分钟,
Recently, Ms. Gu found that her water cost was high. Gu with doubt the comparison found that the same current, their own meter speed needle next to the home of the water meter much faster. In the water company professional staff view and advice, Gu helpless replaced a new meter, and this speeding meter has been “service” for nearly 8 months. As part of everyday family life, water meters have become more prominent. AQSIQ sampling results show that pressure loss, indication error, continuous flow, hydrostatic pressure and other items affecting the quality of the cold water meter are more or less the main indicators of problems. It is understood that, as long-term operation of the water meter under pressure conditions, so the sealing performance of water meter products and compressive strength is essential. National standards, in the pressure test, the nominal pressure of 1MPa water meter should be continued under the pressure of 1.6MPa for 15 minutes at 2MPa for 1 minute,