电表

Hi, our ammeter doesn't work. Could you send someone here to check it out?

你好，我们家电表好像坏了，你能派人来看一下吗？

Ammeter has a wide range of applications in the measurement. How to understand and use the ammeter are very important.

电表在测量中有广泛的应用，因此如何了解电表和使用电表就显得十分重要。

Meter can be used to simulate the 645 agreement, the majority of the current domestic meter is applicable to all manufacturers, mainly three-phase form.

详细说明：能够模拟电表的645协议，对目前国内的大部分电表厂家都适用，主要是三相表。

The former circuit in experiments of revising ammeters with box electricity potential difference meter s can only revise an ammeter, but can not measure the interior resistance of the ammeter at the same time, which can be overcome with the improvements on the circuit.

原有箱式电势差计校正电表实验线路往往只能校正电表而不能同时测量电表的内阻，通过对电路加以改进可以克服这些缺点。

The automatic meter readingsystem should have the functions: the data acquisition function, the set up parameters, the control to system, the advanced charge system and the protectionfunction; Below latter should realize the function: The data acquisition, the electric quantity initialization function, opening machine and closing machine function and power failure protection function.

计量方式选择多用户自动远传抄表系统和单项智能电表远传抄表系统，多用户自动远传抄表系统应具有如下功能：数据采集、参数设置、系统控制功能、系统预付费功能和保护功能；单项智能电表远传抄表系统应实现以下功能：数据采集、电量预置功能，开关机功能和掉电保护功能。

The key problem to work out the electrical data acquisition system is how to establish the communication link between the FMU and ammeters and make sure the system can get the data in ammeters and run without failure.

电力数据采集系统实现的关键技术就是如何建立集中器和电表之间的通信链路，使系统对电表的数据采集能够正常进行。

There are various means to realize the communication link between FMU and ammeters, such as Ethernet and PLC, however they all have different limitation. We would take advantage of radio frequency in ISM channel to provide a better solution in the communication between FMU and ammeters.

集中器与电表之间的物理链路可以有很多选择，如以太网，电力载波线等，但它们都存在着一定的缺陷，所以我们采用了公用ISM频段的无线通信方式来实现集中器与电表之间的数据通信和采集，这种技术有很多优点，它无需布线、成本低、传输速度快、可靠性高。

Replacement of glass and hardware parts of windows and doors, replacement of master switch, lamp holder, socket, interior wire etc.

门窗玻璃及小五金的更换，分电表或无分电表的表内电线、电掣、灯头、插座等更换和分水表内水管、笼头更换。

Established in 2000. For the joint-stock cooperative enterprises, the main production thermocouple meter relay switching substation circuit breaker box sets of walls cable inductance rectifiers solid ballast IC card fees-meter-meter bridge, such as temperature controller.

为股份合作制企业，主要生产仪表继电器热电偶断路器墙壁开关变电箱成套电缆固态整流器电感镇流器 IC卡电表复费式电表温控仪桥架等。

It is indicated that the accuracy of the measured value is determined rather by the practical relative error than by the maximum relative error. It is correct that the nearer the scale reading approaches the maximum, the more accurate the measurement is. The scale reading need not be required above 2/3X.

指出使用电表进行测量时，测量值的准确性是由其实际相对误差而非最大相对误差决定的；并非电表的读数越接近满刻度，测量值的准确性就越高；使用电表进行测量时，电表的读数不必被限定在2/3X上。

But in the course of internationalization, they meet with misunderstanding and puzzlement.

许多企业已经意识到了这一点，但在国际化的进程中，仍存在一些误区与困惑。

Inorder toaccomplish this goal as quickly as possible, we'll beteamingup with anexperienced group of modelers, skinners, and animatorswhosenames willbe announced in the coming weeks.

为了尽快实现这个目标，我们在未来数周内将公布与一些有经验的模型、皮肤、动画制作小组合作。