For additional discounts, please contact our five-star sales manager Lisa Lin.

Description：

The STAHL ET-125-RS422 is an industrial operator panel and display terminal from the R. STAHL Exicom series. It is designed for safe and reliable visualization, control, and data transfer in factory and harsh or hazardous industrial environments.

The ET-125-RS422 is built utilizing Intrinsic Safety (Ex i) protection principles, making it fully certified for deployment in explosive gas (Zone 1 / 2) and combustible dust (Zone 21 / 22) atmospheres. It operates flawlessly under extreme temperatures ranging from -20°C to +60°C, resisting the moisture, high vibration, and corrosive elements typical of chemical, oil, gas, and pharmaceutical manufacturing facilities.

Equipped with a dedicated four-wire, full-duplex RS-422 serial interface, the terminal leverages differential signaling to achieve exceptional noise immunity against severe electromagnetic interference (EMI) caused by heavy plant machinery. This allows for reliable, high-speed data transmission over extended cable runs up to 1,200 meters, bridging the gap between field-level processes and distant control rooms without signal degradation.

Specification：

Frequently asked questions

What is the ET-125-RS422?

It is a rugged, industrial monochrome operator terminal (HMI) designed by R. STAHL for data visualization and equipment control in harsh and hazardous industrial environments.

How many digital inputs does the terminal have?

It provides 8 digital inputs, operating at 3.3 V / 2 mA, designed for passive dry-contact switches or buttons.

What is the operating voltage range of the ET-125-RS422?

The nominal voltage input ranges from 8.5V DC to 12.4V DC, which usually scales to standard industrial 24V DC via a matching safety barrier.

Is the ET-125-RS422 suitable for hazardous locations?

Yes, it is designed with Intrinsic Safety (Ex i) protection principles for deployment in explosive gas or dust environments.

Product Applications

Oil and Gas Extraction: Data monitoring and field terminal display for field drilling platforms and oil production plants.

Petrochemicals and Refining: Production process monitoring and valve/pump status indication in flammable gas and dust environments.

Fine Chemicals and Pharmaceuticals: Reactor parameter setting and local human-machine interaction in clean but volatile solvent workshops.

Warehousing and Logistics: Conveyor control with high explosion-proof ratings in hazardous materials warehouses, painting workshops, etc.