TopWorx 3EX5 Valve Limit Switch Box Inquiry Item

This TopWorx 3EX5 is an explosion-proof non-contact valve position limit switch box, used for valve open/close position signal feedback in hazardous flammable and explosive working conditions. It adopts inductive proximity sensing principle, no mechanical contact, avoids wear and jamming problems of mechanical microswitch. It can send valve on-off status signal to DCS or PLC system, built-in two-channel independent sensing unit, supports SPDT dry contact output. The housing is made of high-strength aluminum alloy, fully sealed explosion-proof structure, suitable for petrochemical, natural gas, refining and other explosion-proof zones. This model is widely matched with ball valve, butterfly valve and pneumatic actuator as valve position feedback spare part.

Specifications

Model: 3EX5 Brand: TopWorx (Emerson) Sensing method: Non-contact inductive proximity Output: SPDT contact signal Explosion-proof standard: ATEX, IECEx Housing material: Cast aluminum alloy Protection grade: IP66 / IP67 Ambient temperature: -40℃ ~ +85℃ Certifications: CE, SIL optional

Components & Troubleshooting

Inductive sensor assembly, signal trigger circuit, terminal wiring block, explosion-proof aluminum housing, indicator window, mounting bracket. Common faults: Inductive sensor failure, no valve position feedback signal, indicator lamp not lighting, wiring terminal loose contact.

Disclaimer

This spare part shall be installed, calibrated and maintained by qualified instrument technicians. Confirm explosion-proof zone classification before commissioning.