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Ultrasonic sensor UPR-A - ATEX accredited

Category: News

The new ultrasonic sensor UPR-A for the ATEX-Zone 2 and 22

Ultrasonic Sensor UPR-A

WayCon Positionsmesstechnik GmbH complements its present product range of ultrasonic sensors withe the UPR-A. The ultrasonic sensor UPR-A was developped especially for the ATEX Zone 2 and 22.

Sensors for use in explosion risk areas must meet the directive 94/9/EC. When working with explosive substances, the installation's operater is responsible for a safety analysis, and from this, the zoning classification. Among others are the zones 2 and 22: Areas in which an explosive atmosphere does not occur or occurs only briefly during normal operation. These are for example areas in the vicinity of dust-containing systems, if dust can escape from leaks and can form deposits in dangerous quantities.

In Zone 2 (gas) devices must be used, which correspond to the device group II, equipment protection level (EPL) Gc. In Zone 22 (dust) those of the device group III, EPL Dc. The protective measures are based on the tightness and impact resistance of the sensor housing, the maximum achievable housing temperature and the avoiding of sparks.

UPR-A as an option for use in ATEX zones 2 and 22. The corresponding mark is:

Ex tc IIIC T60°C Dc 0°C ≤ Ta ≤ +60°C
Ex nA IIC T6 Gc 0°C ≤ Ta ≤ +60°C.

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