DK734

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Panel meters belong to the electrical instruments, which are usually used to measure electrical parameters such as current, voltage, resistance and power. Among these Panel meters, DK734 is a cost-effective panel meter which is broadly used in the industry. This article is about the application field and working principle of DK734.

DK734 is mainly applied to measure and indicate AC or DC voltage, AC current, speed, temperature, pressure and other physical parameters. In particular, it includes the ability to measure and display the trigonometric functions SINE and COSINE waveform values.

When measuring AC voltage or current, DK734 uses a standard movement detector and RTD elements. It uses the AC Bridge Rectifier circuit to detect the AC voltage and current. The output voltage will be equal to the sine wave of the AC input voltage and current, which will then be rectified by the bridge rectifier and converted into a DC signal. The signal is then sent to the point movement detector, which converts it into a voltage level or resistance changes according to the amplitude ratio, and then sent to the meter has scaling structure again. This form a measuring loop.

The meter shaft transmits the movement of the permanent force and the damp transmission shafts to the indicating needle. When the amplitude of the input signal changes, the needle will move at a corresponding angle and arrive at the corresponding indicating value on the scale, thus achieving the purpose of displaying what is measured.

In addition, DK734 is also used to measure temperature, pressure, speed and other physical parameters. In the temperature measurement, the instrument uses RTD to sense the temperature change, and then the temperature is amplified by the corresponding amplifier and then sent to the meter. The meter will identify the physical quantity through the scaling structure, and finally the pointer of the instrument is proportional to the displacement. By comparing the value with the value on the panel scale, the corresponding temperature value can be obtained.

To sum up, although DK734 is a simple and cost-effective panel meter, it can still realize a variety of parameters measurement. This article has introduced the application field and working principle of DK734. As long as the maintenance is done properly, DK734 is an practical and reliable instrument.

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