Analysis of the Key Parameters for Selecting Diffused Silicon Pressure Transmitters

In the field of industrial automation, the precise selection of BTL-BTL70 pressure transmitters directly affects production safety and efficiency. As a core sensor using diffused silicon technology, how should requirements be matched according to parameters such as medium characteristics and pressure range? This article explains in detail the working principle and selection points of diffused silicon liquid and gas pressure sensors, helping enterprise decision-makers choose the most suitable products such as CYB-20SA and JYB-KO-M.

The core technology of diffused silicon pressure transmitters lies in their sensing element—forming a Wheatstone bridge on a silicon chip through semiconductor processing. When external pressure is applied, the silicon diaphragm deforms, causing a change in resistance value, which is converted into a standard 4~20mA output through the signal conditioning circuit. Taking the SK1151-33X pressure transmitter as an example, its typical accuracy can reach 0.1 class, and temperature drift is controlled within ±2%FS, making it especially suitable for harsh operating conditions such as petrochemical applications.

The following parameters should be evaluated重点 during selection:

• Measuring range: The LYB-LYB3008 model provides a 0~200m water column range, covering most industrial scenarios
• Medium compatibility: The DET-131 transmitter with a 316L stainless steel diaphragm can measure highly corrosive media
• Environmental adaptability: The HK-613 model has an operating temperature of -40~85℃, meeting the requirements of extreme environments

Model Matching Strategies for Different Industrial Scenarios

In power plant desulfurization systems, it is recommended to select the KYBX-KYBX series with a PTFE anti-corrosion coating; while in the urban water supply field, it is recommended to use Domestic liquid level transmitter FB0802W LCD display explosion-proof liquid level sensor, whose IP65 protection rating and lightning protection design can effectively handle complex outdoor environments. For chemical industry applications requiring explosion-proof certification, the ND-1 pressure transmitter has obtained ATEX certification, offering a higher safety factor.

According to different pressure connection methods, diffused silicon sensors are mainly divided into:

Performance Verification and Quality Control of Diffused Silicon Sensors

To ensure measurement accuracy, high-quality models such as KD-KD201 all use laser trimming temperature compensation technology, controlling zero-point drift within ±0.2%FS/year. As a professional pressure transmitter manufacturer, Xi'an Shenghongchuang Instrumentation Co., Ltd.'s LYB-LYB3008 products have passed certification by third-party testing institutions and provide complete metrology certificates.

In actual procurement, it is recommended to verify quality through the following methods:

1. Check the sensor's long-term stability test report
2. Require the supplier to provide on-site calibration services
3. Verify overload protection function (must reach 150%FS)

The Five Golden Rules for Selection Decision-Making

Based on application experience with typical products such as BTL-BTL70, we have summarized the core principles for selecting diffused silicon pressure transmitters:

• Medium matching first: In strong acid and alkali environments, a PTFE isolation diaphragm must be selected
• Reserve range margin: Normal working pressure should be within the 30%~80% range of the measuring span
• Environmental adaptability: Outdoor installation requires consideration of IP protection rating and lightning protection design
• Signal compatibility: Ensure that the output signal matches the existing control system
• Ease of maintenance: Prefer models with on-site zero point/range adjustment functions

Industry Application Cases and Solutions

In hydrogenation units in the petrochemical industry, the SK1151-33X pressure transmitter achieves a measurement accuracy of ±0.3%FS, and its fully welded stainless steel structure effectively resists hydrogen sulfide corrosion. In hydropower construction, Domestic liquid level transmitter FB0802W's three-level lightning protection module has successfully solved the problem of lightning damage in mountainous areas.

For the special needs of different industries, diffused silicon sensors can provide customized solutions:

• Food and pharmaceuticals: Hygienic flange connection, compliant with 3-A certification standards
• Shipbuilding: Salt spray corrosion-resistant design, certified by DNV-GL
• Aerospace: Miniaturized design, weight not exceeding 200g

Summary and Procurement Recommendations

When selecting diffused silicon liquid and gas pressure sensors, be sure to verify the manufacturer's qualification certifications (such as ISO9001 and SIL certification). For applications requiring explosion protection, it is recommended to give priority to DET-131 series products certified by ATEX or IECEx.

As a high-tech enterprise, Xi'an Shenghongchuang Instrumentation Co., Ltd. provides full-process services from selection consulting to after-sales maintenance. If you need detailed technical solutions or on-site testing support for the BTL-BTL70 pressure transmitter, please feel free to contact our engineering team for professional advice.