Emerson PR9268 Electric Speed Sensor

Safety certification and suitability for hazardous areas

The PR9268 series sensors have passed multiple international safety certifications, allowing them to be installed in various hazardous areas.

Intrinsic Safety: The basic type (20/30) has obtained the Ex ia IIC T4/T6 Ga rating and is suitable for Zone 0 areas. The high-temperature type (60/70) has achieved Ex ib IIC T3/T4 Gb rating and is suitable for Zone 1 area.

International certification: The product complies with standards such as CE, ATEX, IECEx, CSA, and UKCA, ensuring compliant applications worldwide.

Ordering Information and Accessories

The model code of the sensor includes information such as measurement type, cable length, and terminal type. For example, the number "0" in the model represents a Harting plug, and "1" represents an open cable end. In addition, special versions are also available, such as the OPR version with FEP coated stainless steel armor and the CNSPEC version that requires separate installation of resistance networks. The optional AC100 extension cable can be used for long-distance signal transmission.

Key points of engineering application

Installation direction: Install strictly according to the selected direction to avoid measurement errors caused by installation angle deviation. For horizontal measurement, it is essential to ensure that the sensor is within a tolerance range of ± 10 ° or ± 30 °.

Signal cable: The standard armored cable has good resistance to mechanical damage. In situations with severe electromagnetic interference, it is necessary to ensure that the cable shielding layer is properly grounded.

Intrinsic safety system: When used in hazardous areas, power supply and signal isolation must be achieved through compliant intrinsic safety barriers (such as the MVD DirectConnect series).

Diagnosis: Regularly measuring the DC resistance of the sensor coil can effectively determine the health status of the internal circuit of the sensor and detect potential open or short circuits in a timely manner.