Transformer oil level temperature controller

Transformer oil level temperature controllerOverview

It is a transformer instrument designed based on the principle of composite temperature rise. Suitable for temperature detection and control of transformers and other equipment. This instrument has good protective performance and can work normally under outdoor conditions. The instrument is equipped with four to six sets of adjustable control switches, which can be used for controlling the cooling system of transformers, signal alarms, over temperature tripping, etc. By embedding a temperature transmitter or Pt100 platinum resistor in a primary meter, a DC (4-20) mA current signal or Pt100 platinum resistor signal corresponding to the temperature value can be output for use in computer systems and secondary instruments, achieving unmanned power station management.

Transformer oil level temperature controller

If it is a current type output sensor, the experiment cannot be conducted in this way. Because the current type output load cannot be open circuited, otherwise it is easy to overload and damage the sensor. For sensors with three wire output, a 1000 Ω short circuit resistor should be first connected between the sensor signal line and the negative terminal to prevent overload in case of misoperation.

After clarifying the positive and negative poles in advance, connect the positive and negative wiring of the sensor, and then short-circuit the signal wire with the other wires separately to see if there is a stable display. If so, the wiring of the signal line can be determined. Then, in the event of a power outage, remove the resistor that was previously short circuited, connect the wires, and only then can power be supplied. Be sure not to open the signal line.

For long transmission distances, but computers require voltage output signals, current output signals can be used for transmission. When it reaches the computer, the current signal can be converted into a voltage signal. The method is simple, just connect a standard high-quality resistor between the output and the negative terminal of the power supply.

Due to the principle of magnetostrictive displacement sensors, mechanically speaking, they are non-contact and wear free, so the chance of failure is not high unless there is mechanical damage or the magnetic ring falls off, which is easy to judge from the appearance. If it is installed inside the oil cylinder and the magnetic ring suddenly falls off, the displayed value will not change.

If it takes a long time to detach after shutdown, it seems that a magnetic ring appears near the electronic compartment end when power is turned on, that is, the positive logic ruler will display a small display value, and the negative logic ruler will display a large display value. If it is a detachable electronic compartment, the electronic compartment can be easily removed and tested with a magnetic ring when charged. From an electrical perspective, there is a possibility of problems occurring.

In order to avoid electrical problems, the company has done a lot of work, such as selecting components with low power consumption to reduce power consumption. For example, the current consumption is only 16mA, but the actual power is less than 0.4W. This way, the components will not heat up, age, or be damaged; There is also a company that has solved various other problems through advanced technology. The products have undergone rigorous environmental and mechanical testing and meet the requirements. There should be no issues under normal usage conditions and environments. Possible issues may arise, such as: data transmission not running, software package not installed successfully, wiring errors, signal size and direction incorrect, electrostatic interference not effectively grounded, current type output not wired, or our product being a three wire system instead of a two-wire system

The development and editing of magnetostrictive displacement sensors is a sensor developed using the magnetostrictive effect. This sensor can achieve non-contact and absolute measurement, with the characteristics of high accuracy and large range. Especially because the magnet and sensor do not have direct contact, the sensor can be applied in harsh industrial environments, such as flammable, explosive, volatile, and corrosive environments.

In addition, sensors can withstand environments with high temperature, high pressure, and high oscillation. The sensor output signal is an absolute value, so even if the power supply is interrupted and reconnected, it will not cause any problems with data collection, and there is no need to readjust the zero position. Due to the non-contact nature of the sensor components, even if the measurement process is repeated repeatedly, it will not cause any wear on the sensor.