High Pressure Dew Point Transmitter ST03
Features
■ High accuracy and long-term stability
■ Capable of temperature compensation and linear adjustment
■ Standard MODBUS RTU protocol, RS-485 communication interface
■ More size of connector for different environment to be easily installed
■ High pressure, low humidity, dew point Max scaling range – 100 ~ + 60 dp℃
■ Free programmable software which can adjust dew point range
Applications
■ Compressed air system / Freezer / Adsorption machine
■ Plastic dryer / Industrial drying process
■ Paper / Chemical process monitoring
Specification :
| Performance parameters | |
| DP range | – 60 to +60 dp ℃ |
| Output signal | Standard RS-485 & 1 analog output |
| 0-20mA / 4-20 mA / 0-1VDC / 0-5VDC / 0-10VDC | |
| Signal connection | 3-wire |
| Modbus | Standard RS-485 & 1 analog output |
| Power Supply | 8VDC to 35VDC & 10VAC to 30VAC |
| Linear accuracy | ± 2 dp ℃ ( at + 25 ℃ ) ± 0.02%F.S/℃ |
| Response time | ＜ 20S (temp.at+25℃) |
| Operating temp. for housing | – 40 ~ + 80 ℃ |
| Operating humidity for housing | 0 ~ 95 RH % |
| Operating temp. for probe | – 70 ~ + 80℃ |
| Storage temperature | – 25 ~ + 60 ℃ |
| Bearable pressure | 16 bar |
| Current | DC24V, 50 mA |
| Consumption | M12 connector |
| Power Supply | 8-35 VDC & 10-30 VAC |
| Protection | Body IP65 ( probe : IP20) |
| Housing | S.S.( SUS304) |
| Probe | S.S. ( SUS304 ) / SUS sintered filter ( SUS316 ) |
| Weight | 233g |
Precise Moisture Monitoring in High-Pressure Systems: High Pressure Dew Point Transmitter ST03
Ensure process reliability, product quality, and equipment protection with the High Pressure Dew Point Transmitter ST03—a rugged, industrial-grade sensor engineered for continuous, real-time measurement of dew point in compressed air, natural gas, and high-pressure industrial gases. With a pressure rating up to 300 bar (4350 psi) and dew point range from –80°C to +20°C TD, the ST03 delivers exceptional stability and accuracy (±2°C TD) for applications in power generation, oil & gas, pharmaceuticals, and semiconductor manufacturing.
Engineered for Harsh Environments and Critical Processes
The ST03 High Pressure Dew Point Transmitter utilizes a capacitive thin-film polymer sensor with advanced signal conditioning to provide reliable moisture detection even in high-pressure, high-purity, or corrosive gas streams. Its 316L stainless steel process connection and hermetically sealed electronics ensure long-term performance in demanding conditions. The transmitter outputs a standard 4–20 mA signal (with optional Modbus RTU, HART, or RS485) for seamless integration into SCADA, PLC, and control systems.
- Dew Point Range: –80°C to +20°C TD – Ideal for dry air, instrument air, and natural gas dehydration monitoring.
- Pressure Rating: Up to 300 bar (4350 psi) – Direct installation in high-pressure pipelines without pressure regulators.
- High Accuracy: ±2°C TD – Ensures compliance with ISO 8573-1 Class 2–4 and GPA 2172 standards.
- Fast Response & Low Maintenance – No consumables; minimal drift over time; auto-diagnostic alerts.
- Explosion-Proof Options (ATEX/IECEx) – Certified for use in Zone 1/2 hazardous areas.
- Optional Integrated Display & Calibration Port – On-site readout and easy verification without system shutdown.
Trusted for Process Safety and Quality Assurance
Excess moisture in high-pressure systems causes corrosion, ice formation, catalyst poisoning, and product degradation. The ST03 enables:
Real-time monitoring of dryer performance (desiccant or refrigerated)
Validation of natural gas pipeline dew point for custody transfer
Protection of sensitive pneumatic controls in pharma and electronics
Early detection of dryer failure to prevent costly downtime
Whether installed in an offshore platform, a biogas plant, or a cleanroom air system, the High Pressure Dew Point Transmitter ST03 provides the reliability and precision critical for moisture-sensitive processes.
Measure moisture under pressure. Prevent failure. Ensure purity.
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