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STG18 Differential Pressure Transmitter

The STG18 Differential Pressure Transmitter is a high-performance industrial device designed for precise differential pressure measurement. It utilizes a solid-state monocrystalline silicon sensing element combined with a silicon oil-filled transmission structure. Based on the piezoresistive effect of semiconductor materials, it converts differential pressure into highly accurate electrical signals. The built-in Wheatstone bridge ensures excellent linearity between output signal and pressure, delivering stable and reliable performance. Constructed with a full stainless steel design (304 housing with 316L isolation diaphragm), the STG18 offers outstanding corrosion resistance and long-term stability. The laser-welded, fully sealed structure provides protection ratings of IP65 (DIN43650) or IP67 (M12 connector), making it suitable for harsh environments with moisture, dust, and vibration. With overload capability up to 200% FS and burst pressure up to 500% FS, it ensures enhanced durability and safety. The transmitter supports multiple output options, including 4–20mA, 0–10V, 1–5V, and Modbus RS485-RTU communication, and operates on 12VDC or 24VDC power supply. Its wide pressure range from 0~0.1 Bar to 0~600 Bar (including bidirectional pressure) meets diverse industrial requirements. Widely used in oil & gas, chemical processing, power generation, water treatment, and industrial automation, the STG18 is ideal for measuring differential pressure in gases, liquids, and oils. Applications include pipeline monitoring, filtration systems, flow measurement, and equipment diagnostics. With high accuracy (up to ±0.05% FS), reliability, and flexible configuration, the STG18 is an ideal solution for industrial differential pressure measurement.

1. Key Features

2. Technical Specifications

General Electrical Data

Pressure Range 0~0.1Bar, 0~600Bar, ±0.1Bar, ±600Bar
Measurement Type Differential Pressure
Output Signals 4–20mA, 1–5V, 0–5V, 0–10V, RS485 Modbus-RTU
Supply Voltage 12 VDC / 24 VDC

Performance Specifications

Accuracy ±0.5%FS, ±0.2%FS, ±0.1%FS, up to ±0.05%FS
Long-term Stability ≤±0.1%F.S./year
Overpressure 200% FS
Burst pressure 500% FS
Temperature Compensation Range (accuracy maintained within this range) -20°C to +85°C
Operating temperature range −40 to +125°C
Storage temperature range −40 to +125°C
Media Temperature Range -40°C to +125°C

3. Applications

4. Selection Guide

Pressure Sensor Selection Key Points: Confirm the measuring range, match the output signal, ensure media compatibility, select the appropriate mounting interface, and define the accuracy requirements.

5. FAQ (Frequently Asked Questions)

Q1: What industries is the STG18 differential pressure transmitter used in?

The STG18 is widely used in oil & gas, chemical processing, power generation, water treatment, hydraulic systems, and industrial automation. It is suitable for measuring differential pressure of gases, liquids, and oils in pipelines, filtration systems, and flow monitoring.

Q2: What is the pressure range of the STG18?

The STG18 offers a wide pressure range from 0~0.1 Bar up to 0~600 Bar, including bidirectional ranges (±0.1 Bar to ±600 Bar), meeting various industrial application requirements.

Q3: What output signals are available?

It supports multiple output options including 4–20mA, 0–5V, 0–10V, 1–5V analog signals, as well as RS485 Modbus-RTU digital communication for easy integration with PLC and DCS systems.

Q4: How accurate is the STG18 differential pressure transmitter?

The accuracy can reach up to ±0.05% FS, with excellent linearity and long-term stability (≤±0.1% FS per year), making it ideal for high-precision applications.

Q5: What materials are used in the STG18 construction?

The transmitter features a 304 stainless steel housing and a 316L stainless steel diaphragm, providing strong corrosion resistance. The fully welded and sealed design ensures durability in harsh environments.

Q6: Do you offer customization services?

Yes, as a China-based manufacturer, we provide OEM/ODM customization services, including pressure range, output signals, thread connections (G1/2, M20×1.5), electrical interfaces, and special application requirements.

Q7: What is the power supply requirement?

The STG18 operates on 12VDC or 24VDC, making it compatible with most industrial control systems.

Q8: What is the protection rating?

The protection level is IP65 (DIN43650 connector) or IP67 (M12 connector), ensuring reliable performance in dusty and wet environments.

Q9: Can it be used with corrosive media?

Yes, the 316L stainless steel diaphragm is compatible with many corrosive media. However, for highly aggressive substances, compatibility verification is recommended.

Q10: What are your advantages as a Chinese manufacturer?

As a professional pressure sensor manufacturer in China, we offer competitive pricing, strict quality control, stable production capacity, and flexible OEM/ODM services to support global customers.

6. Related Products

7. Contact Us

📧 Email: sales@yatansensor.com,   support@yatansensor.com

💬 WhatsApp:+86 185 1660 2370

8. Model Selection / Ordering Code

Please specify the full ordering code when requesting a quotation.

        Model - Range - Output - Accuracy - Electrical Interface - Connector - Cable Length - Supply Voltage

        Example:
        STG18 -  0~100bar - 4-20mA - 0.5%- G1/4 - M12 - 1m - 24V
    

Request Information & Quote

Our engineering team will help you select the right product based on your application requirements.

📞 Tel: 400 180 6877
📧 Email: sales@yatansensor.com
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💬 WhatsApp: +86 185 1660 2370