KONGSBERG GT300 pressure transmitter

7.2 Overload resistance capability

Overload is the main cause of sensor damage. The elastic limit of ceramic materials is extremely high. When the pressure instantly exceeds the range or even reaches several times the overload, the ceramic diaphragm will adhere tightly to the substrate (bottom) instead of undergoing plastic deformation like metal diaphragms. Once the pressure returns to normal, the sensor immediately resumes operation with unchanged performance. The GT300 provides clear overload pressure indicators for different ranges, such as a 0.6bar range that can withstand an overload of 2bar, and a 10bar range that can withstand an overload of 20bar.

Chapter 8: Maintenance and Troubleshooting

In practical applications, GT300 may experience output abnormalities, which can usually be attributed to the following reasons:

Blockage of the pressure system: Sediments or crystals at the process connection block the pressure channel.

Wiring and grounding: The shielding layer is not properly grounded or the cable is laid in parallel with the power cable, which introduces interference.

Sealing failure: The aging or improper installation of Viton sealing rings leads to medium leakage.

Exceeding compensation temperature: Although the storage temperature range is wide, if electronic components work at 85 ° C or above for a long time, it will accelerate component aging.

It is recommended that users perform regular zero calibration (adjust under no pressure) and check whether the cable joints are loose or have water ingress.