Techcon Normally Closed Proximity Switch

Description

The Techcon normally closed proximity switch is a dispenser parts replacement item for compatible dispensing-equipment control and sensing circuits. Use it when the service documentation calls for a normally closed proximity sensor and the machine needs a like-for-like replacement during troubleshooting or scheduled maintenance.

Where these dispenser parts fit

Proximity switches are used to confirm position, presence, or travel without a direct mechanical contact at the sensing point. In dispensing equipment, that can support actuator position checks, guarded movement, cartridge or valve positioning, or other control logic depending on the machine. TSD1139-13 is the listed replacement path. Confirm the current service recommendation before purchase.

Before replacing the sensor, check the target surface, bracket position, cable routing, and indicator behavior if the equipment provides one. A misaligned target or damaged cable can mimic a failed switch. After replacement, cycle the station slowly and confirm the control sees the expected normally closed signal before returning the dispenser to production work.

Store sensors separately from disposable adhesive-path items such as a mixing nozzle, 2 part mixing nozzle, or jb weld mixing nozzle. Nozzles are selected by cartridge ratio and material flow, while a proximity switch must match the control circuit and sensing arrangement. That distinction matters when a service cart carries both electronic spares and cartridge accessories.

Dispenser parts specs and ordering notes

Order this part after checking the machine manual, sensor style, and replacement recommendation. For related repair hardware, valves, cartridges, and accessories, browse dispensing, mixers, and nozzles. For manufacturer background on compatible dispensing systems, visit Techcon.

Need Help?

Need help confirming whether this normally closed sensor matches your dispensing station? Call (800) 220-1966 or email [email protected].