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Model: HL-C96A  HL-C72A     DC Ammeter

Model: HL-C96V  HL-C72V     DC Voltmeter

Accuracy class: 1.5.

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

For transformation ratio: 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 keeps the same, dial scales of all models in this series can be exchanged yet remain the accuracy.

Overload rate of ammeters: ①non-overload ②1.2 times

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

For transformation ratio: 450V 500V 600V 1000V 1500V 2000V 3000V 5000V. The meter should be used under the circumstance of 5mA incoming rated current and with an external fixed resistor.

Overload rate of voltmeters: ①non-overload ②1.2 times

Product performance: All the meters are equipped with pure white silk-screen printing dial scale. The movement is made of high-performance flame retardant PC plastics, of which the flame retardant class is V-0, resistant voltage up to 4300V and resistant heat higher than 120℃. The meter is easy to install with imported high-strengh stainless steel by stamping so that it is of high immobility. The protective cover adopts the whole area design, and the clamping structure which is easy to assemble and dissemble, make the meter up to the rules of international standard IEC61010-1.

Principles of measurement and the fearures: Each magneto-electrial 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 with point to a scale mark, which is the measured valure.

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.