Yokogawa 915U-2-900US Ruggedized Radio Telemetry Module

Product Overview

Yokogawa 915U-2-900US Ruggedized Radio Telemetry Module for Harsh Industrial Environments

The Yokogawa 915U-2-900US is a ruggedized 900 MHz wireless radio telemetry module engineered for continuous, reliable operation in the most demanding industrial environments. Designed as part of Yokogawa’s proven 915U Series wireless telemetry platform, this module delivers stable, interference-resistant data transmission across process plants, remote field stations, and safety-critical infrastructure where wired communication is impractical or cost-prohibitive.

Built to withstand high ambient temperatures, elevated humidity, airborne particulates, mechanical vibration, and intense electromagnetic interference (EMI), the 915U-2-900US maintains signal integrity and operational continuity in conditions that would compromise lesser wireless devices. Its spread-spectrum 900 MHz radio technology provides superior penetration through structural steel, concrete walls, and dense industrial machinery — making it the preferred choice for oil and gas facilities, mining operations, water treatment plants, and heavy manufacturing lines where uninterrupted telemetry is a safety and productivity imperative.

In modern distributed control architectures, the 915U-2-900US serves as a critical communication bridge between field instruments and host systems. It integrates seamlessly with Yokogawa CENTUM VP DCS controllers, STARDOM FCN/FCJ autonomous controllers, and ProSafe-RS safety instrumented systems, enabling wireless extension of I/O networks without compromising system integrity. When paired with Yokogawa’s YTA series temperature transmitters, EJA series differential pressure transmitters, or ADMAG AXF magnetic flowmeters, the module creates a fully wireless measurement loop capable of sustaining 24/7 process monitoring with sub-second update rates.

Rugged Specifications Table

Comprehensive Protection Solutions

The 915U-2-900US does not operate in isolation — it is a cornerstone component within a broader ecosystem of Yokogawa field devices and control infrastructure. In a typical process automation cabinet, this wireless module works alongside the Yokogawa CENTUM VP FCS Field Control Station to relay real-time process variables from remote measurement points back to the central DCS without the cost and complexity of cable runs across hazardous or geographically dispersed areas.

For safety-instrumented applications, the 915U-2-900US integrates with the Yokogawa ProSafe-RS Safety Controller and its associated SSB401 Safety I/O Modules, enabling wireless data acquisition that feeds into SIL 2 and SIL 3 safety loops. When field instruments such as the Yokogawa EJA110E Differential Pressure Transmitter or the Yokogawa YTA320 Temperature Transmitter are deployed in remote or hard-to-wire locations, the 915U-2-900US provides the reliable wireless backbone that keeps these measurements flowing to the control room.

In power distribution and motor control applications, the module complements Yokogawa WT series Power Analyzers and industrial relay protection panels by transmitting electrical quality data wirelessly to SCADA systems. For facilities running mixed-vendor architectures, the 915U-2-900US can interface with third-party PLCs and DCS platforms via standard Modbus RTU or Modbus TCP gateways, making it a versatile addition to any control cabinet alongside conventional terminal modules, surge protection devices, and DIN-rail power supplies.

Its frequency-hopping spread-spectrum technology provides inherent resistance to narrowband interference from variable frequency drives (VFDs), welding equipment, and high-voltage switchgear — all common EMI sources in heavy industrial environments. This makes the 915U-2-900US particularly well-suited for deployment near Yokogawa VSFX Series Variable Speed Drives and large motor control centers without signal degradation.

Application in Critical Infrastructure

Across the world’s most demanding industrial sectors, the Yokogawa 915U-2-900US has established a track record of dependable wireless telemetry in environments where failure is not an option.

Oil & Gas: On offshore platforms and onshore pipeline networks, the 915U-2-900US transmits pressure, temperature, and flow data from wellhead instruments to central control rooms across distances that make cable installation economically and logistically prohibitive. Its IP66-rated enclosure and wide operating temperature range ensure continuous operation through salt spray, extreme heat, and mechanical shock from pump and compressor vibration.

Mining & Minerals Processing: In underground mining operations and open-pit mineral processing plants, the module maintains reliable telemetry through rock, structural steel, and heavy dust loading. It supports remote monitoring of conveyor systems, crushers, and slurry pumps — enabling predictive maintenance programs that reduce unplanned downtime in continuous production environments.

Power Generation & Utilities: At thermal, hydro, and renewable energy facilities, the 915U-2-900US provides wireless connectivity for turbine monitoring, transformer temperature sensing, and substation automation. Its EMI immunity is critical in high-voltage switchyards where conventional wireless devices frequently suffer interference-induced dropouts.

Water & Wastewater Treatment: Municipal and industrial water treatment plants deploy the 915U-2-900US to monitor remote pump stations, chemical dosing systems, and effluent quality sensors across large geographic footprints. The module’s low power consumption and robust enclosure make it ideal for outdoor installations exposed to rain, UV radiation, and temperature cycling.

Metallurgy & Steel Production: In electric arc furnace facilities and rolling mills, the 915U-2-900US operates reliably in the presence of intense electromagnetic fields, radiant heat, and airborne metallic particulates — conditions that rapidly degrade unprotected electronics. Its rugged design ensures continuous process data delivery even during peak production cycles.

Security & Quality FAQ

Q1: What warranty coverage is provided with the Yokogawa 915U-2-900US?
Every 915U-2-900US unit supplied by TOPNLMS carries a 12-month warranty from the date of shipment. All modules undergo functional testing and inspection prior to dispatch to verify communication performance, power integrity, and physical condition. Warranty claims are supported with direct technical assistance and replacement coordination.

Q2: How is the module tested before shipment?
Each unit is subject to pre-shipment inspection covering visual examination, power-on functional verification, and radio communication testing where applicable. Units sourced from authorized channels are cross-referenced against Yokogawa’s genuine part identification standards. Test records are available upon request for quality-critical procurement processes.

Q3: Is the 915U-2-900US compatible with existing Yokogawa CENTUM VP and ProSafe-RS systems?
Yes. The 915U-2-900US is designed for native integration within Yokogawa’s 915U wireless network architecture, which is compatible with CENTUM VP, STARDOM, and ProSafe-RS platforms. For mixed-vendor environments, Modbus gateway configurations are supported. Compatibility verification for specific system revisions is available through our technical support team prior to purchase.

Q4: Can long-term supply and replacement support be guaranteed?
TOPNLMS maintains stock of the 915U-2-900US and related 915U Series components to support ongoing maintenance, emergency replacement, and planned lifecycle upgrades. For facilities requiring guaranteed spare parts availability over multi-year maintenance contracts, we offer reserved stock arrangements. Contact our team to discuss long-term supply agreements tailored to your plant’s operational requirements.