HTJ-HTJ100 Pressure Transmitter Working Principle Diagram，Easy to Understand at a Glance！

As a representative product of diffused silicon liquid and gas pressure sensors，the HTJ-HTJ100 pressure transmitter has an operating principle that is key knowledge in the field of industrial measurement。This article will use intuitive diagrams to explain how the HTJ-HTJ100 pressure transmitter achieves accurate pressure detection through diffused silicon sensing elements，helping operators quickly master the core principle，while also comparing the features and applicable scenarios of different models such as PT124B-210 and DG1300。

1. Core Operating Principle of Diffused Silicon Pressure Transmitters

The core of the HTJ-HTJ100 pressure transmitter lies in the diffused silicon sensing element it uses。When the pressure of the measured medium（liquid or gas）acts on the sensor diaphragm，the diaphragm undergoes slight deformation，and this deformation is transmitted to the diffused silicon chip through silicone oil。A Wheatstone bridge is integrated on the diffused silicon chip，and when pressure is applied，the resistance value of the bridge changes，thereby generating an electrical signal proportional to the pressure。After this weak electrical signal is processed by the built-in high-precision amplifier circuit，it outputs a standard 4～20mA or 0～10V signal，achieving accurate conversion from pressure to an electrical signal。

Compared with models such as PT124B-210-1MPa-G1/2，the HTJ-HTJ100 adopts more advanced temperature compensation technology，ensuring that within the medium temperature range of -30～+85℃，temperature drift is ≤±0.05％FS／℃，greatly improving measurement stability。This is also why the HTJ-HTJ100 can maintain long-term stable measurement accuracy in hydraulic and pneumatic control systems。

2. Analysis of Key Components and Technologies

1.Diffused silicon chip：Four pressure-sensitive resistors are diffused and formed on a monocrystalline silicon wafer using semiconductor technology，forming a Wheatstone bridge。When pressure is applied，changes in resistance cause bridge imbalance and output a voltage signal。This design gives the HTJ-HTJ100 a fast response time of ≤5 milliseconds，making it particularly suitable for scenarios requiring rapid response，such as power station operation inspections。

2.Signal processing circuit：Includes three main modules：temperature compensation，linearization processing，and signal amplification。Compared with the KYB-800 pressure transmitter，the signal processing circuit of the HTJ-HTJ100 uses more precise components，ensuring the overall error is controlled within accuracy class 0.25。

3.Mechanical structure：Uses a 316 stainless steel housing and isolation diaphragm，capable of withstanding overload pressure up to 2 times the full scale。Pressure connections are available in multiple options such as M20×1.5 and G1/2，meeting different installation requirements。

3. Typical Application Scenarios and Model Selection Comparison

4. Common Fault Troubleshooting and Maintenance Points

1.Abnormal output signal：Check whether the power supply voltage is within the 9～36VDC range，and confirm whether the electrical connection is reliable。Similar to the LD-108-3PBA793 pressure transmitter，the HTJ-HTJ100 also uses a four-core shielded cable，so it is necessary to ensure that the connector protection rating reaches IP65。

2.Zero drift：It can be adjusted within ±8％ of the output range。If the drift is severe，the sensor may be contaminated or damaged by overload，requiring cleaning or replacement。

3.Abnormal display：For models with an LCD display，such as the domestic industrial 2088 pressure transmitter PMP51 digital display diffused silicon model，check whether the display module connection is loose。Regular calibration can ensure measurement accuracy，and calibration is recommended at least once a year。

5. Why Choose Our Pressure Transmitters

Our Domestic Industrial 2088 Pressure Transmitter PMP51 Digital Display Diffused Silicon 2088 Pressure Sensor uses high-precision sensor components of the same grade as internationally renowned brands，offering the following advantages：

• Multiple output signals available：4～20mADC，0～10VDC，etc.
• Wide temperature compensation range：0～70℃
• Long-term stability：±0.1％FS／year
• Multiple pressure connection options：M20×1.5，G1/2，etc.

Whether it is the high-precision requirements of the HTJ-HTJ110 pressure transmitter or the cost-effective choice of the KYB-800 pressure transmitter，we can provide the most suitable solution。Welcome to contact us for detailed technical information and quotations。