Accuracy class:SD-C96, SD-C80A and SD-C72A ,1.5.SD-C48,2.5

For through current:50uA 100uA 200uA 300uA 500uA 1mA 5mA 10mA 15A 20mA; 4-20mA 50mA 100mA 200mA 300mA 500mA 1A 2A 3A 5A 6A 10A 15A 20A 25A 30A 40A 50A 60A ;The up limit of through current for SD-C48A is 50A.

For transformation ration:5A 10A 15A 20A 25A 30A 40A 50A 60A 75A 100A......10KA;The meters should be used with a shunt of which external secondary voltage 60mV or 75mV.As long as the incoming voltage keep the same,dial scales of all models in this series can be exchanged yet remain the accuracy.

        Overload rate of ammeters:1.non-overload  2.1.2times  3.2times

For through voltage:50mV 60mV 75mV 100mV 200mV 300mV 500mV 1V 5V 10V 30V 50V 100V 150V 200V 300V 400V 450V 500V 600V.

For transformation ration:450V 500V 600V 1000V 1500V 2000V 3000V 5000V;the meters should be used under the circumstance of 5mA incoming rated current and with an external fixedresistor.

Overload rate of voltmeters:1.non-overload  2.1.2times 

Principles of measurement and the features.Each magneto-electrical meter consists of permanent magnet steel and a moving coil with two tractive balance springs.When low current flows through the magnet coil and magnetic field appears,the pointer deflects with the movement of magnet coil.When the torque and the restoring torque keep a balance,the pointer on the moving iron will point to a scale mark,which is the measured value.

The magneto-electrical meters can be merely used for DC measurement.The advantages are high accuracy and sensitivity,low power consumption and the uniform scale,as well as insensitivity to temperature and external magnetic field,while the disadvantage is the low overload capacity.

Accuracy class:SD-GC96, SD-GC72A ,1.5.SD-GC48,2.5

For through current:100uA 200uA 300uA 500uA 1mA 5mA 10mA 15A 20mA; 4-20mA 50mA 100mA 200mA 300mA 500mA 1A 2A 3A 5A 6A 10A 15A 20A 25A 30A 40A 50A  ;The up limit of through current for SD-GC48A is 15A.

For transformation ration:The meters should be used with a shunt of which primary voltage is 5A 10A 15A 20A 25A 30A 40A 50A 60A 75A 100A......10KA and secondary voltage is 60mV or 75mV.As long as the incoming voltage keep the same,dial scales of all models in this series can be exchanged yet remain the accuracy.

Overload rate of ammeters:1.non-overload  2.1.2times  3.2times

For through voltage:50mV 60mV 75mV 100mV 200mV 300mV 500mV 1V 5V 10V 30V 50V 100V 150V 200V 300V 400V 450V 500V 600V.

For transformation ration:Primary voltage is 450V 500V 600V 1000V 1500V 2000V 3000V 5000V;it should be used under the circumstance of 5mA incoming rated current and with an external fixedresistor.

Overload rate of ammeters:1.non-overload  2.1.2times 

Principles of measurement and the features.Each 240°magneto-electrical meter consists of permanent magnet steel and a moving coil with two tractive balance springs.When low current flows through the magnet coil and magnetic field appears,the pointer deflects with the movement of magnet coil.When the torque and the restoring torque keep a balance,the pointer on the moving iron will point to a scale mark,which is the measured value.

240° magneto-electrical meters can be merely used for DC measurement.The advantages are high accuracy and sensitivity,low power consumption and the uniform scale,as well as insensitivity to temperature and external magnetic field,while the disadvantage is the low overload capacity.

Accuracy class:2.5

For through current:100uA 200uA 300uA 500uA 1mA 5mA 10mA 15A 20mA; 4-20mA 50mA 100mA 200mA 300mA 500mA 1A 2A 3A 5A 6A 10A 15A 20A 25A 30A 40A 50A 60A.

For transformation ration:5A 10A 15A 20A 25A 30A 40A 50A 60A 75A 100A......10KA;The meters should be used with a shunt of which external secondary voltage 60mV or 75mV.

Overload rate of ammeters:1.non-overload  2.1.2times

For through voltage:50mV 60mV 75mV 100mV 200mV 300mV 500mV 1V 5V 10V 30V 50V 100V 150V 200V 300V 400V 450V 500V 600V.

For transformation ration:450V 500V 600V 1000V 1500V 2000V 3000V 5000V;the meters should be used under the circumstance of 5mA incoming rated current and with an external fixedresistor.

Overload rate of voltmeters:1.overload-free

Principles of measurement and the features:Each magneto-electrical meter consists of permanent magnet steel and a moving coil with two tractive balance springs.When low current flows through the magnet coil and magnetic field appears,the pointer deflects with the movement of magnet coil.When the torque and the restoring torque keep a balance,the pointer on the moving iron will point to a scale mark,which is the measured value.

The magneto-electrical meters can be merely used for DC measurement.The advantages are high accuracy and sensitivity ,low power consumption and the uniform scale ,as well as insensitivity to temperature and external magnetic field,while the disadvantage is the low overload capacity.

Accuracy class:2.5

For through current:0.5A 1A 1.5A 3A 5A 10A 15A 20A 25A 30A 40A 50A 60A.

For transformation ratio:The meters should be used with a current transformer of which primary current 10A 15A 20A 25A 30A 40A 50A 60A 75A 100A 120A 150A......10KA and external secondary current 1A or 5A.

Overload rate of ammeters:1.non-overload  2.1.2times

For through voltage:30V 50V 75V 100V 120V 150V 200V 250V 300V 400V 450V 500V 600V.

For transformation ratio:The meters should be used with a voltage transformer of which primary voltage is 400V 450V 500V 600V 1000V 1500V 2000V 3000V 5000V......450KV and external secondary voltage 100V.

Overload rate of voltmeters:1.overload-free

Principles of measurement and the features:Each electromagnetic meter consists of a magnet coil with a magnet coil with a static sheet iron inside and a moving sheet iron with a tractive balance spring .When current flows through the magnet coil,magnetic field appears.Under such circumstance,the static and the moving sheet irons are magnetized simultaneously and remain the same polarity.According to the theory that the same polarities repel each other,repulsive force between the two irons makes the pointer deflect.When the torque and the restoring torque keep a balance,the pointer on the moving iron will point to a scale mark,which is the measures value.

The electromagnetic meters can be used for AC circuits under ordinary circumstance as well as for DC circuits instructed with TRMS.The structure of the meters is simple,yet the accuracy and overload capacity are high,as well they can be used in 50/60hz circuits.Special frequency should be marked out in ordering.

Accuracy class:2.5

For through current:100uA 200uA 300uA 500uA 1mA 5mA 10mA 15A 20mA; 4-20mA 50mA 100mA 200mA 300mA 500mA 1A 2A 3A 5A 6A 10A 15A 20A 25A 30A 40A 50A 60A.

For transformation ration:5A 10A 15A 20A 25A 30A 40A 50A 60A 75A 100A......10KA;The meters should be used with a shunt of which external secondary voltage 60mV or 75mV.

Overload rate of ammeters:1.non-overload  2.1.2times

For through voltage:50mV 60mV 75mV 100mV 200mV 300mV 500mV 1V 5V 10V 30V 50V 100V 150V 200V 300V 400V 450V 500V 600V.

For transformation ration:450V 500V 600V 1000V 1500V 2000V 3000V 5000V;the meters should be used under the circumstance of 5mA incoming rated current and with an external fixedresistor.

Overload rate of voltmeters:1.overload-free

Product performance:All the meters are equipped with pure white silk-screen printing dial scale.The movement is made of aluminum alloys and permanent magnet steel so that it is vibration-resistant and heat-resistant.The case is made of PC plastics ,of which the resistant temperature can be up to 120°C.The resistant voltage is higher than 2000V.This kind of meter is easy to install with high-strengthen plastics grip piece by screwing down the nut so that the meter is of high immobility.

Principles of measurement and the features:Each magneto-electrical meter consists of permanent magnet steel and a moving coil with two tractive balance springs.When low current flows through the magnet coil and magnetic field appears,the pointer deflects with the movement of magnet coil.When the torque and the restoring torque keep a balance,the pointer on the moving iron will point to a scale mark,which is the measured value.

The magneto-electrical meters can be merely used for DC measurement.The advantages are high accuracy and sensitivity ,low power consumption and the uniform scale ,as well as insensitivity to temperature and external magnetic field,while the disadvantage is the low overload capacity.

Accuracy class:1.5

For through current:50uA 100uA 200uA 300uA 500uA 1mA 5mA 10mA 15A 20mA; 4-20mA 50mA 100mA 200mA 300mA 500mA 1A 2A 3A 5A 6A 10A 15A 20A 25A 30A 40A 50A 60A.

For transformation ration:5A 10A 15A 20A 25A 30A 40A 50A 60A 75A 100A......10KA;The meters should be used with a shunt of which external secondary voltage 60mV or 75mV.As long as overload rate and the in incoming current keep the same,dial scales of all models in this series can be exchanged yet remain the accuracy.

Overload rate of ammeters:1.non-overload  2.1.2times

For through voltage:50mV 60mV 75mV 100mV 200mV 300mV 500mV 1V 5V 10V 30V 50V 100V 150V 200V 300V 400V 450V 500V 600V.

For transformation ration:450V 500V 600V 1000V 1500V 2000V 3000V 5000V;the meters should be used under the circumstance of 5mA incoming rated current and with an external fixedresistor.

Overload rate of voltmeters:1.non-overload  2.1.2times

Principles of measurement and the features:Each magneto-electrical meter consists of permanent magnet steel and a moving coil with two tractive balance springs.When low current flows through the magnet coil and magnetic field appears,the pointer deflects with the movement of magnet coil.When the torque and the restoring torque keep a balance,the pointer on the moving iron will point to a scale mark,which is the measured value.

The magneto-electrical meters can be merely used for DC measurement.The advantages are high accuracy and sensitivity ,low power consumption and the uniform scale ,as well as insensitivity to temperature and external magnetic field,while the disadvantage is the low overload capacity.