Abnormal display on the HH-HH316 pressure transmitter? 3 common fault symptoms and quick solutions

Is abnormal display on the HH-HH316 pressure transmitter disrupting your work? As a professional manufacturer of flow control equipment, we have in-depth knowledge of common faults in diffused silicon pressure sensors. This article focuses on display issues with the HH-HH316 pressure transmitter, providing a detailed analysis of 3 typical fault symptoms and quick solutions to help operators quickly restore normal equipment operation.

I. No signal or black screen on the display

When the HH-HH316 pressure transmitter shows no signal or a black screen, it usually involves power supply system or internal circuit issues. The display module of the diffused silicon liquid and gas pressure sensor depends on a stable power input. It is recommended to troubleshoot according to the following steps:

• Check the power supply circuit:Use a multimeter to measure whether the input terminal voltage reaches the standard value of 24VDC. If the voltage is lower than 18VDC, it may cause abnormal display
• Test the fuse:Open the wiring box to confirm whether the fuse is blown (common in products of the same series such as JPB-JPB2300)
• Restart the device:Disconnect the power for 30 seconds and then power it on again to observe whether the display returns to normal

If the above methods do not work, the internal PCB board may be damaged, and professional technicians should be contacted for repair. Similar issues are also common in models such as PT124B-212.

II. Value jumping or unstable display

When the displayed value of the diffused silicon liquid and gas pressure sensor jumps frequently, it is often related to signal interference or medium fluctuation. Solutions for the HH-HH316 pressure transmitter include:

1. Grounding treatment:Ensure that the grounding resistance between the transmitter housing and the pipeline is ＜4Ω (refer to the YB-YB3011 technical specification)
2. Check sealing performance:Use soapy water to check whether there is leakage at the process connection, with special attention to the TY-804 model interface of the same specification
3. Isolate interference sources:Keep the distance between the signal cable and the power cable above 30cm, and add a metal shielding conduit if necessary

For applications with high long-term stability requirements, we recommend using the domestic weighing sensor LDCZL-TL pedal force sensor/pedal sensor with an accuracy level of 0.05%, whose integrated structural design can effectively reduce signal fluctuation.

III. Large deviation between displayed value and actual pressure

When there is an obvious deviation between the HH-HH316 displayed value and the actual system pressure, the following 3 situations should be considered:

For harsh environments such as chemical and metallurgical industries, it is recommended to select alloy steel sensors with an operating temperature range of -20℃～+65℃, such as LDCZL-TL series products, whose creep characteristics can be controlled within ±0.05%.

Preventive maintenance recommendations

The key to extending the service life of the HH-HH316 pressure transmitter lies in regular maintenance:

• Clean the sensor diaphragm every quarter to avoid scaling affecting the sensitivity of PT-PT202 diffused silicon elements
• Perform 1 full-scale calibration every year (using the same method as the PT124B-212 calibration procedure)
• Maintain ambient humidity at ＜60%RH when storing spare sensors

Summary and technical support

The 3 abnormal display conditions of the HH-HH316 listed in this article cover more than 80% of on-site faults. As a leading sensor manufacturer in Northwest China, we provide professional technical support for the full range of diffused silicon pressure sensors such as CS-CS211. If the problem is still not resolved, please feel free to contact our engineering team for customized solutions.

For applications requiring high-precision measurement, the domestic weighing sensor LDCZL-TL pedal force sensor offers comprehensive accuracy up to 0.05% and is widely used in aerospace, petrochemical, and other fields. Click to learn more about product details or obtain a real-time quotation.