4-20ma Output Presion Sensor Pressure Temperature

In industrial automation and process control, the 4-20mA output pressure sensor with integrated temperature measurement stands as a cornerstone of reliable data transmission. This dual-function transmitter converts pressure and temperature variables into a robust 4-20mA current loop signal, ensuring immunity to electrical noise over long cable runs. Unlike voltage-based alternatives such as the 0.5-4.5v IP65 Waterproof Sensor Pressure Temperature, the current loop design is inherently resistant to voltage drops and interference, making it the preferred choice for demanding field environments. For corrosive or high-temperature media, material selection becomes critical; options like the SS316L Material Pressure Temperature Sensor offer excellent chemical resistance and durability, while the Hastelloy C Base Sensor Pressure Temperature extends compatibility to aggressive acids and chlorides. Engineers seeking digital communication often evaluate protocols such as the I2C Digital Output Presion Sensor Pressure Temperature, but for most legacy systems and new installations alike, the analog 4-20mA standard remains unmatched in simplicity and reliability when combined with HART overlay capabilities.

The 4-20mA output pressure sensor with temperature compensation delivers precision monitoring across a wide spectrum of industrial applications. Each device features a fully welded stainless steel diaphragm and internal digital compensation, providing simultaneous outputs for both pressure and temperature without the need for separate instruments. Below are the core specifications that define this sensor series:

• Pressure ranges: 0-1 bar up to 0-1000 bar (gauge, absolute, or sealed gauge)
• Temperature measurement: integrated Pt100 or thermocouple element, range -50°C to +200°C (extended options available)
• Output signal: 4-20 mA two-wire loop, with optional HART communication
• Accuracy: ±0.25% FS typical, including non-linearity, hysteresis, and repeatability
• Power supply: 10-30 VDC (loop-powered), reverse polarity protection
• Process connection: G1/4, 1/4 NPT, M20×1.5 standard; custom threads upon request
• Wetted materials: 316L stainless steel, Hastelloy C276, or titanium for aggressive media
• Ingress protection: IP67 or IP69K with optional field housing

Key performance parameters for a typical model are summarized in the table below:

Each 4-20mA output pressure sensor is individually characterized and compensated across the full temperature range, ensuring consistent accuracy from cold start to steady-state operation. The rugged construction eliminates drift caused by thermal shock, while the sealed electronics cavity prevents moisture ingress even in washdown areas. With advanced digital calibration stored on board, these transmitters can be rapidly swapped without re-ranging, reducing downtime in critical process loops.