They should be kept away form fire , warm air and sunlight . the product storage life is one year . if the products are out of the storage limit , the another tests should be done , and then the qualified products still can be used 本产品不宜受潮和受热，应储存在干燥通风的仓库中，不得靠近火源暖气片或受阳光的曝晒，储存期从制造之日起为壹年，超过储存期，按性能指标要求检验合格的仍可继续使用。
They should be kept away form fire , warm air and sunlight . the product storage life is 3 months . if the products are out of the storage limit , the another tests should be done , and then the qualified products still can be used 本产品不宜受潮和受热，应储存在干燥通风的仓库中，不得靠近火源暖气片或受阳光的曝晒，储存期从制造之日起为三个月，超过储存期，按性能指标要求检验合格的仍可继续使用。
This product is unfit for to be made moist and be heated , should be stored in the storehouse of dry ventilation , must not be near fiery source and radiator or by sunlight , store the day that expected from production to rise to be three months , exceed to store issue , according to function target requirement , inspect qualified can still use continuously 本产品不宜受潮和受热，应储存在干燥通风的仓库中，不得靠近火源暖气片或受阳光的曝晒，储存期从制造之日起为陆个月，超过储存期，按性能指标要求检验合格的仍可继续使用。
This product is unfit for to be made moist and be heated , should be stored in the storehouse of dry ventilation , must not be near fiery source and radiator or by sunlight , store the day that expected from production to rise to be six months , exceed to store issue , according to function target requirement , inspect qualified can still use continuously 本产品不宜受潮和受热，应储存在干燥通风的仓库中，不得靠近火源暖气片或受阳光的曝晒，储存期从制造之日起为六个月，超过储存期，按性能指标要求检验合格的仍可继续使用。
Heating centralized is an important thing in the north . whether this is implemented in a large scale has contributed to impove city modern level and ameliorate atmosphere environment . the traditional heating system are two - upright - pipe - parallel system , two - pipe system , single - pipe - stride system etc , whose calculation for heat charge is either by man or by ic installed on the caliduct . therefore , the problem arise that heat provided does n ' t accord with heat charge payed , not secure , and resident have to suffer much 传统的供暖系统有双立管水平式系统、全双管系统、单管跨越式系统等，其计费方式要么为人工计费，要么是利用安装在暖气片上的带电读卡器，这样存在着供热量与收费额匹配不准确、不安全等方面的问题，也使集中供热用户有苦难言。
In this paper , a safe , reliable , and intellectual control plan is provided aiming at the heat charge for dwelling district , which contains epigynous machine responsible for data processing and hypogynous mahcine responsible for unlocking the valve , by means of serial communication between them , combining homemade three - channel valve , to adminstrate the charge data and the valve efficiently . the main idea is based on the homemade three - channel valve . the vavle is locked at peacetime , while it is opened with the help of open tool and a water flow in the caliduct . as soon as the flow stops , the valve locks automatically . the open tool has data in its memory , and implement function by lcd and keyborad . so it can identify data and drive motor , to open the valve intellectually . the epigynous machine database manage system administrator the dweller information , standard heat charge and payment infomation etc , including store , configure , query , print etc , then store in the memory of open tool . as a result , the plan can do well in the experiment 此阀平时是锁闭的，只有用开启器配以暖气片中的水流才可打开，一旦水流断开，则此阀会自会锁闭。而开启器则是根据其存储器中的数据配以液晶显示及小键盘，完成数据确认及电机驱动，自动对相应用户的三通阀打开特定角度，完成开启任务。上位机数据库管理系统完成对用户信息、热费标准、缴费信息等原始数据的常规管理，包括存储、设置、查询、打印等,最后将处理后的数据传到开启器中存储。
This product is unfit for to be made moist and be heated , should be stored in the storehouse of dry ventilation , must not be near fiery source and radiator or by sunlight , store the day that expected from production to rise to be one year , exceed to store issue , according to function target requirement , inspect qualified can still use continuously 本产品不宜受潮和受热，应储存在干燥通风的仓库中，不得靠近火源暖气片或受阳光的曝晒，储存期从制造之日起为壹年，超过储存期，按性能指标要求检验合格的仍可继续使用。
This product is unfit for to be made moist and be heated , should be stored in the storehouse of dry ventilation , must not be near fiery source and radiator or by sunlight , store the day that expected from production to rise to be three month , exceed to store issue , according to function target requirement , inspect qualified can still use continuously 本产品不宜受潮和受热，应储存在干燥通风的仓库中，不得靠近火源暖气片或受阳光的曝晒，储存期从制造之日起为叁个月，超过储存期，按性能指标要求检验合格的仍可继续使用。
