At the latest around 7 o'clock, a customer from Liaocheng, Shandong called to say that they had purchased an input type liquid level transmitter from an online dealer. However, when they received the goods and installed it on site, they found that the meter head did not display. They also called the dealer before but did not answer. It was urgent to install it on site. Fortunately, there is a chemical company next door that uses our input type liquid level transmitter produced by Runyi. After the chemical company purchased and installed it, it was easy to use and the value displayed stably. Therefore, they are now calling our manufacturer to ask for help solve the problem. After receiving the call, we asked about the installation situation on site and then used mobile video to help the customer solve the problem. The customer is very happy. What should I do if the meter of the input type liquid level transmitter does not display after installation? Let me explain a few points to everyone

Firstly, after the installation of the input type liquid level transmitter, the meter head does not display, and it is necessary to check the power supply and wiring

Power supply issue: Confirm whether the power supply voltage of the transmitter is DC24V (two-wire transmitters need to share power and signal circuits), and use a multimeter to measure whether the voltage is stable

Wiring error: Check if the positive and negative terminals of the power supply are reversed, and if the signal wire (such as the OUT terminal) is securely connected to avoid looseness or oxidation

Secondly, after the installation of the input type liquid level transmitter, the meter head does not display: signal output and interference troubleshooting

Signal line test: Use a multimeter to check if the output signal is normal. If the signal line is too long or damaged, it needs to be replaced or shortened

Electromagnetic interference: Use shielded cables and check grounding, and install filters if necessary

Thirdly, after the installation of the input type liquid level transmitter, the meter head does not display: sensor and installation status

Sensor malfunction: Check if the sensor diaphragm is blocked or damaged, clean or replace the sensor

Installation verification: Confirm that the installation angle and position meet the requirements to avoid measurement abnormalities caused by tilting or poor sealing

Fourth, after the installation of the input type liquid level transmitter, the meter head does not display: other possible reasons

Internal circuit failure: If the above steps are ineffective, it may be due to damage to the internal circuit board of the transmitter, and the device needs to be replaced

Influence of heat tracing system: If the medium is prone to condensation (such as wax oil), it is necessary to check whether the heat tracing system is unobstructed to prevent the medium from solidifying and jamming the sensor