TopWorx TXP-M21GNEM Limit Switch Box

Product Description

TopWorx TXP-M21GNEM (Emerson) is a valve position monitor / limit switch box of TXP series with cast aluminum housing, direct NAMUR mount design. It integrates a highly visible position indicator and built-in GO Switch non-contact proximity sensors. Certified for hazardous areas with high IP rating and adjustable cams. It pairs with pneumatic actuators for ball and butterfly valves, transmitting open/closed feedback signals to DCS or PLC. It is widely adopted for valve position monitoring in oil, gas and chemical explosion-proof zones.

Technical Parameters

• Model: TXP-M21GNEM
• Brand: TopWorx (Emerson)
• Type: Valve Position Switch Box / Valve Position Feedback Monitor
• Housing Material: Cast Aluminum A360
• Mounting: Direct NAMUR mounting
• Sensor: GO Switch non-contact magnetic sensor
• Indication: Transparent high-visibility position indicator (red/green for open/closed)
• Ingress Protection: IP66 / IP67, NEMA 4X
• Certifications: ATEX, IECEx, UL for hazardous locations
• Conduit Entry: 3/4″ NPT
• Switch Configuration: Dual non-contact sensors
• Operating Temperature: -40℃ ~ +85℃
• Features: Non-contact, long service life, maintenance-free, adjustable cams
• Compatible Actuator: NAMUR standard pneumatic valve actuators

Application

Used in oil & gas, refining, chemical, coal chemical and offshore hazardous environments. Matched with pneumatic ball valves, butterfly valves and plug valves to capture valve open/closed status and send feedback to control systems for remote monitoring and interlock protection. Commonly deployed on pipeline shut-off valves, process on-off valves and ESD emergency shutdown valves.

Series Models (TXP Series)

• TXP-M21GNEM
• TXP-M21GNPM
• TXP-M21GNMM
• TXP-L21GNEM
• TXP-E21GNEM