物位检测仪表（变送器及开关）检测

NEMA C12.9-2005 变压器额定仪表用测试开关

Test Switches for Transformer-Rated Meters

IEEE C12.9-1987 变压器额定仪表的测试开关

TEST SWITCHES FOR TRANSFORMER-RATED METERS

IEEE C12.9-1982 变压器额定仪表的测试开关

TEST SWITCHES FOR TRANSFORMER-RATED METERS

ANSI C12.9-2005 变压器额定仪表用测试开关

Intended to encompass the dimensions and functions of meter test switches used with transformer-rated watthour meters in conjunction with instrument

Test Switches for Transformer-Rated Meters

NEMA C12.9-1993 变压器额定仪表的测试开关 R（1999）

Test Switches for Transformer-Rated Meters R(1999)

NEMA C12.9-2014 变压器额定仪表的测试开关和插头

Test Switches and Plugs for Transformer-Rated Meters

IEEE C12.9-1993 变压器额定仪表测试开关的美国国家标准

American National Standard for Test Switches for Transformer-Rated Meters

JJG(机械) 93-1992 电动单元组合仪表温度变送器检定规程

Calibration rules for electric unit combination meter temperature transmitter

ANSI/IEEE C12.9:1993 变压器额定仪表用测试开关的美国国家标准

American National Standard for Test Switches for Transformer-Rated Meters

PD IEC TR 61577-5:2019 辐射防护仪器仪表 氡和氡衰变产物测量仪器 氡及氡衰变产物的一般性质及其测量方法

Radiation protection instrumentation. Radon and radon decay product measuring instruments. General properties of radon and radon decay products and their measurement methods

IEEE Std C12.9-1993 变压器额定仪表测试开关的美国国家标准（ANSI/IEEE）

C12.9-1987 included in IEEE Electricity Metering Standards Collection

American National Standard for Test Switches for Transformer-Rated Meters(ANSI/IEEE)

JJG(化工) 18-1989 浮筒液位变送器检定规程

Verification Regulations for Displacement Level Transmitter

SIS SEN 06 01 15-1971 Watthour仪表及关联熔断器配位操作值．要求及型号测试

Coordination ofrated values for watthour meters and associated fuses. Requirements and type-tests

DB43/T 879.1-2014 变频电量测量仪器 测量用变送器

Transmitter for measurement of frequency conversion electric quantity measuring instrument

JJG(机械) 99-1992 电动单元组合仪表压力、差压变送器检定规程

Verification regulations for pressure and differential pressure transmitters of electric unit combination instrument

NEMA C12.9-2005 变压器额定仪表用测试开关

Test Switches for Transformer-Rated Meters

IEEE C12.9-1987 变压器额定仪表的测试开关

TEST SWITCHES FOR TRANSFORMER-RATED METERS

IEEE C12.9-1982 变压器额定仪表的测试开关

TEST SWITCHES FOR TRANSFORMER-RATED METERS

ANSI C12.9-2005 变压器额定仪表用测试开关

Intended to encompass the dimensions and functions of meter test switches used with transformer-rated watthour meters in conjunction with instrument

Test Switches for Transformer-Rated Meters

NEMA C12.9-1993 变压器额定仪表的测试开关 R（1999）

Test Switches for Transformer-Rated Meters R(1999)

NEMA C12.9-2014 变压器额定仪表的测试开关和插头

Test Switches and Plugs for Transformer-Rated Meters

IEEE C12.9-1993 变压器额定仪表测试开关的美国国家标准

American National Standard for Test Switches for Transformer-Rated Meters

JJG(机械) 93-1992 电动单元组合仪表温度变送器检定规程

Calibration rules for electric unit combination meter temperature transmitter

ANSI/IEEE C12.9:1993 变压器额定仪表用测试开关的美国国家标准

American National Standard for Test Switches for Transformer-Rated Meters

PD IEC TR 61577-5:2019 辐射防护仪器仪表 氡和氡衰变产物测量仪器 氡及氡衰变产物的一般性质及其测量方法

Radiation protection instrumentation. Radon and radon decay product measuring instruments. General properties of radon and radon decay products and their measurement methods

IEEE Std C12.9-1993 变压器额定仪表测试开关的美国国家标准（ANSI/IEEE）

C12.9-1987 included in IEEE Electricity Metering Standards Collection

American National Standard for Test Switches for Transformer-Rated Meters(ANSI/IEEE)

JJG(化工) 18-1989 浮筒液位变送器检定规程

Verification Regulations for Displacement Level Transmitter

SIS SEN 06 01 15-1971 Watthour仪表及关联熔断器配位操作值．要求及型号测试

Coordination ofrated values for watthour meters and associated fuses. Requirements and type-tests

DB43/T 879.1-2014 变频电量测量仪器 测量用变送器

Transmitter for measurement of frequency conversion electric quantity measuring instrument

JJG(机械) 99-1992 电动单元组合仪表压力、差压变送器检定规程

Verification regulations for pressure and differential pressure transmitters of electric unit combination instrument