The CEAG EFS MS Ex-d Motion Sensor from Eaton's Crouse-Hinds series is a rugged, flameproof motion detector engineered specifically for hazardous and harsh industrial environments classified as Zone 1, 2, 21, and 22. Designed for integration with linear light fixtures, this advanced motion sensor provides efficient, demand-oriented lighting control in areas with potentially explosive atmospheres caused by gas or dust.
Housed in a durable light metal enclosure and featuring a robust borosilicate glass viewing window, the EFS MS sensor is built to endure extreme conditions, including dust, moisture, and wet environments. Its IP67-rated protection ensures complete resistance to water and dust ingress, making it suitable for a broad range of heavy-duty applications.
One of the standout capabilities of the EFS MS is its wide detection range of up to 15 meters when wall-mounted and 10 meters in diameter when ceiling-mounted. This allows the sensor to efficiently monitor large work zones. It also supports motion detection speeds ranging from 0.3 to 3 meters per second (approximately 1 to 10 km/h) and offers an adjustable sensitivity range from 20% to 100%, with a customizable brightness threshold from 1 lux to infinity. The detection angle is approximately 120°, allowing for wide coverage in operational zones.
With a switching capacity of up to 400 VA, the EFS MS can reliably control even large lighting systems. The device is rated for at least 300,000 switching cycles with an inrush current up to 20 A (200 µs), and up to 100,000 cycles at 60 A, offering dependable long-term performance. A compatibility test is available for applications requiring higher switching demands. Power consumption is minimal, with standby power less than 1.3 W.
The sensor operates on a 230 V AC power supply (±10%, 50 Hz) and utilizes high-frequency (HF) detection technology with a 5.8 GHz ± 75 MHz frequency range and rated transmission power of less than 5 mW. It includes 3-pole pluggable clamp terminals (N, L, L') supporting wire cross sections up to 1.5 mm², simplifying installation. Recommended mounting heights are up to 2.7 meters for wall installations and 4.0 meters for ceiling setups.
Certified for use in explosive atmospheres under ATEX and IECEx directives, the EFS MS carries the following markings:
According to ATEX 2014/34/EU: Ex II 2 G Ex d IIC T6 Gb / Ex II 2 D Ex t IIIC T85°C Db
EC-Type Examination Certificate: LOM 03 ATEX 2034
IEC 60529-rated protection: IP67
Operating temperature range: -20 °C to +55 °C
The unit supports a variety of cable and line ducting options, including conduits and flameproof cable glands. Any unused entry points must be sealed with certified screw plugs. An external earthing connection is provided for grounding. These features, combined with its high chemical, thermal, and mechanical resistance, make the EFS MS flameproof motion sensor an ideal solution for automated lighting control in hazardous industrial areas such as petrochemical plants, offshore platforms, and chemical processing facilities.
https://www.eaton.com/us/en-us/catalog/lighting-and-controls/ceag-efs-ms-ex-d-motion-sensor-for-zone1-21-areas.html
