39.040.99 其他计时仪器 标准查询与下载

QB/T 2662-2023 电动机式家用微波炉定时器

Motor-timer for household microwave oven

QB/T 2258-2023 机械式响铃定时器

Mechanical bell timer

QB/T 1939-2021 电风扇用机械式定时器

Mechanical timer for electric fan

QB/T 2269-2021 电烤箱用机械式定时器

Mechanical timer for electric oven

BS ISO 12511:1997+A1:2021 土方机械 小时仪表

Earth-moving machinery. Hour meters

PN-EN 12414-2021-01 E 车辆停车控制设备 停车终端要求和试验方法

Vehicle parking control equipment -- Requirements and test methods for a parking terminal

QB/T 2539-2019 家用电动洗衣机定时器 电动机式定时器

Household electric washing machine timer motor type timer

QB/T 2316-2019 家用电动洗衣机定时器 发条式定时器

Household electric washing machine timer clockwork timer

QB/T 5410-2019 液晶式石英定时器

LCD quartz timer

GSO ISO 12511:2013 土方机械装置 时钟测量装置

This International Standard specifies the meters used to measure the amount of time an earth-moving machine has been operated. It is applicable to earth-moving machinery as defined in ISO 6165, but does not mandate the use of hour meters on any earth-moving machine.

Earth-moving machinery -- Hour meters

GOST IEC 61038-2011 电量测量.税费和载荷控制.定时自动开关的详细要求

Electricity metering. Tariff and load control. Particular requirements for time switches

BS IEC 61588:2008 网络测量和控制系统的精密时钟同步协议

Precision clock synchronization protocol for networked measurement and control systems

IEC 61588:2009 网络测量和控制系统的精密时钟同步协议

This standard defines a protocol enabling precise synchronization of clocks in measurement and control systems implemented with technologies such as network communication@ local computing@ and distributed objects. The protocol is applicable to systems communicating by local area networks supporting multicast messaging including@ but not limited to@ Ethernet. The protocol enables heterogeneous systems that include clocks of various inherent precision@ resolution@ and stability to synchronize to a grandmaster clock. The protocol supports system-wide synchronization accuracy in the sub-microsecond range with minimal network and local clock computing resources. The default behavior of the protocol allows simple systems to be installed and operated without requiring the administrative attention of users. The standard includes mappings to User Datagram Protocol (UDP)/Internet Protocol (IP)@ DeviceNet@ and a layer-2 Ethernet implementation. It includes formal mechanisms for message extensions@ higher sampling rates@ correction for asymmetry@ a clock type to reduce error accumulation in large topologies@ and specifications on how to incorporate the resulting additional data into the synchronization protocol. The standard permits synchronization accuracies better than 1 ns. The protocol has features to address applications where redundancy and security are a requirement. The standard defines conformance and management capability. There is provision to support unicast as well as multicast messaging. The standard includes an annex on recommended practices. Annexes defining communication-medium-specific implementation details for additional network implementations are expected to be provided in future versions of this standard. Purpose Measurement and control applications are increasingly employing distributed system technologies such as network communication@ local computing@ and distributed objects. Many of these applications will be enhanced by having an accurate system-wide sense of time achieved by having local clocks in each sensor@ actuator@ or other system device. Without a standardized protocol for synchronizing these clocks@ it is unlikely that the benefits will be realized in the multivendor system component market. Existing protocols for clock synchronization are not optimum for these applications. For example@ the Network Time Protocol (NTP) targets large distributed computing systems with millisecond synchronization requirements. The protocol in this standard specifically addresses the needs of measurement and control and operational systems in the fields of test and measurement@ industrial automation@ military systems@ manufacturing systems@ power utility systems@ and certain telecommunications applications. These applications need: ?? Spatially localized systems with options for larger systems ?? Microsecond to sub-microsecond accuracy ?? Administration-free operation ?? Applicability for both high-end devices and low-cost@ low-end devices ?? Provisions for the management of redundant and fault-tolerant systems Several different application areas such as industrial automation@ telecommunication@ semiconductor manufacturing@ military systems@ and utility power generation have emerged that require the standard to be revised.

Precision clock synchronization protocol for networked measurement and control systems

SANS 60730-2-7:2008 家用及类似用途自动电气控制.第2-7部分:对定时器及时间开关的特殊要求

Applies to timers and time switches for household and similar use that may use electricity, gas, oil, solid fuel, solar thermal energy, etc. or a combination thereof, including heating, air conditioning and similar applications.

Automatic electrical controls for household and similar use Part 2-7: Particular requirements for timers and time switches

IEEE 1588-2008 网络测量和控制系统用精密时钟同步协议

This standard defines a protocol enabling precise synchronization of clocks in measurement and control systems implemented with technologies such as network communication, local computing, and distributed objects. The protocol is applicable to systems communicating by local area networks supporting multicast messaging including, but not limited to, Ethernet. The protocol enables heterogeneous systems that include clocks of various inherent precision, resolution, and stability to synchronize to a grandmaster clock. The protocol supports system-wide synchronization accuracy in the sub-microsecond range with minimal network and local clock computing resources. The default behavior of the protocol allows simple systems to be installed and operated without requiring the administrative attention of users. The standard includes mappings to User Datagram Protocol (UDP)/Internet Protocol (IP), DeviceNet, and a layer-2 Ethernet implementation. It includes formal mechanisms for message extensions, higher sampling rates, correction for asymmetry, a clock type to reduce error accumulation in large topologies, and specifications on how to incorporate the resulting additional data into the synchronization protocol. The standard permits synchronization accuracies better than 1 ns. The protocol has features to address applications where redundancy and security are a requirement. The standard defines conformance and management capability. There is provision to support unicast as well as multicast messaging. The standard includes an annex on recommended practices. Annexes defining communication-medium-specific implementation details for additional network implementations are expected to be provided in future versions of this standard.

Precision clock synchronization protocol for networked measurement and control systems

QB/T 1534-2006 机械秒表

本标准规定了机械秒表的定义、分类、要求、试验方法、检验规则及标志、包装、运输、贮存。 本标准适用于具有叉瓦式擒纵机构的机械式秒表。

Mechanical watches

IEC 61588:2004 网络测量和控制系统的精密时钟同步协议

Defines a protocol enabling precise synchronization of clocks in measurement and control systems implemented with technologies such as network communication, local computing, and distributed objects. The protocol will be applicable to systems communicati

Precision clock synchronization protocol for networked measurement and control systems

UL 863 BULLETINS-2003 时间指示和记录装置

Covers electrically-operated clocks that form parts of a master clock system; secondary, cost, payroll, and other clocks intended primarily for industrial installations; and time stamps, job-card recorders, timers, and similar time indicating and recording appliances. These appliances are intended for use on circuits of 300 volts or less in accordance with the National Electrical Code, ANSI/NFPA 70.

Time-Indicating and -Recording Appliances

LST EN 12414-2001 车辆停车控制设备 凭票机 技术和功能要求

Vehicle parking control equipment - Pay and display ticket machine - Technical and functional requirements

GOST R IEC 61038-2001 量电计.价格和载荷控制.定时自动开关的特殊要求

Настоящий стандарт распространяется на переключатели с резервом работы, применяемые внутри помещений для управления по времени электрич

Electricity metering. Tariff and load control. Particular requirements for time switches