■ EDA.370 Industrial Pressure Transmitter (Railway Application & Zero/Span Adjustment)

-       Zero & span adjustment

-       High insulation grade, > 2000MΩ at 500 VDC

-       Accuracy ±0.5%, ±0.25%, ±0.1% F.S

-       Suitable for railway and industrial applications

■ Product Overview

The EDA.370 series is an industrial pressure transmitter designed for high accuracy, durability, and long-term stability in demanding environments.

It is based on a stainless steel 316L piezoresistive silicon pressure sensor and incorporates advanced electronic components and PCB design.

The signal processing circuit includes protection against noise, burst, surge, and high insulation, ensuring stable signal transmission. All units are fully calibrated and tested under strict quality control procedures.

With its high insulation design, the EDA.370 ensures reliable operation in high-voltage and electromagnetically noisy environments.

In addition, the EDA.370 allows on-site zero and span adjustment, enabling users to compensate for installation tolerances, environmental changes, and long-term signal drift without removing the transmitter from service.

The zero/span adjustment function is accessible through the DIN 43650A connector plug, allowing convenient field calibration and maintenance.

To support this feature, the EDA.370 is supplied exclusively with a DIN 43650A electrical connection.

■ Pressure Measurement Principle

The EDA.370 measures pressure using a piezoresistive silicon pressure sensor.

Pressure-induced deformation is converted into an electrical signal, which is amplified and compensated by internal electronics to provide a stable analog output.

■ Materials of Wetted Parts

All wetted parts are made of stainless steel 316L, providing excellent corrosion resistance and durability.

■ Accuracy Class

▶ ±0.5% F.S (standard)

▶ ±0.25% F.S (option)

▶ ±0.1% F.S (option)

■ Zero & Span Adjustment

Zero adjustment: Sets the baseline output signal at zero pressure.

Span adjustment: Aligns the full-scale pressure range with the maximum output signal.

The EDA.370 enables field adjustment through the DIN 43650A connector plug, allowing users to fine-tune transmitter performance after installation.

This feature helps compensate for installation effects, piping stress, environmental variations, and long-term sensor drift.

As a result, measurement accuracy can be maintained without returning the instrument for recalibration, reducing maintenance costs and system downtime.

■ High Insulation

The EDA.370 provides insulation resistance greater than 2000 MΩ at 500 VDC.

This ensures reliable performance in high-voltage environments by protecting the signal from electromagnetic interference, surge voltage, and leakage current.

■ Applications

▶ Railway brake systems

▶ Semiconductor manufacturing

▶ Automotive industry

▶ Pneumatic & hydraulic systems

▶ Oil & chemical industry

▶ Heavy industry & shipbuilding

▶ Pharmaceutical industry

▶ Food & beverage industry

▶ Power & energy industry

▶ Water & wastewater treatment