Molybdenum rod electric heating power controller is a device used to control electric heating of molybdenum rods. Molybdenum rod is a commonly used electric heating element, made of molybdenum, has a high melting point and high temperature resistance, so it is widely used in the field of high temperature heating. The main functions of the molybdenum rod electric heating controller include the following aspects: 1. Temperature control: The molybdenum rod electric heating controller can monitor the temperature of the molybdenum rod in real time through the temperature sensing element (such as thermocouple or thermal resistance), and adjust and control according to the set temperature range to keep the molybdenum rod working at the specified temperature within range. 2. Heating power adjustment: The molybdenum rod electric heating controller can adjust the heating power according to the demand, and control the heating effect of the molybdenum rod by controlling the current or voltage. 3. Current protection: The molybdenum rod electric heating controller can monitor the working current of the molybdenum rod. When the current exceeds the set value, corresponding protection measures will be taken, such as reducing power or disconnecting the power supply, to avoid safety hazards caused by excessive current risk and equipment damage. 4. Display and alarm: The molybdenum rod electric heating controller is usually equipped with a display screen, which can display the temperature of the molybdenum rod, heating power and other parameters. At the same time, when the temperature exceeds the set range or other abnormal conditions occur, an alarm will be issued to remind the operator to take timely measures. In summary, the molybdenum rod electric heating controller can realize precise control of the temperature and heating power of the molybdenum rod, and ensure the stable heating of the molybdenum rod within a safe range. It is suitable for various industrial and experimental applications that require high temperature heating.
To control the molybdenum rod electric heating controller through 4-20mA, it is necessary to use a 4-20mA transmitter to convert the control signal into a corresponding current signal. Specific steps are as follows: 1. Adjust the control system: First, the control system needs to be adjusted so that the input signal range of 4-20mA corresponds to the required control range. For example, if you want to control the temperature in the range of 0-100°C, you can use 4mA for 0°C and 20mA for 100°C. 2. Install a 4-20mA transmitter: Install a 4-20mA transmitter at the control input interface of the molybdenum rod electric heating controller. The function of this transmitter is to convert the control signal (for example, the analog signal output by PLC or PID controller) into the corresponding 4-20mA current signal. 3. Connect power and signal wires: Connect the transmitter to power and control signal sources. Usually, the transmitter needs to connect the power supply (usually DC24V) to its power terminal, and then connect the 4-20mA output signal to the control input terminal of the molybdenum rod electric heating controller. 4. Adjust the output range: According to actual needs, it may be necessary to adjust the output range of the 4-20mA transmitter. Some transmitters have adjustable zero and span functions, which can be adjusted accordingly as needed. 5. Perform control: Once the above steps are completed, the corresponding control signal can be sent through the control signal source such as PLC or PID controller. The transmitter will convert this signal into a 4-20mA current signal and send it to the molybdenum rod electric heating controller. Then, the molybdenum rod electric heating controller will control the heating power and temperature of the molybdenum rod according to the received signal. It should be noted that the specific operation steps may vary, so it is recommended to consult the operation manual of the molybdenum rod electric heating controller and 4-20mA transmitter used to ensure proper connection and configuration.
Post time: Jun-21-2023