Metso‑Neles D201925 Limit Switch Sensor Assembly Module
Metso‑Neles D201925 Limit Switch Sensor Assembly Module - Image 2
Metso‑Neles D201925 Limit Switch Sensor Assembly Module - Image 3
Metso‑Neles D201925 Limit Switch Sensor Assembly Module - Image 4

Metso‑Neles D201925 Limit Switch Sensor Assembly Module

  1. DXP‑A: Neles DXP series standard limit‑switch box housing
  2. DXR‑B: Explosion‑proof type limit‑switch enclosure for hazardous zones
  3. DKX: Heavy‑duty on‑site valve feedback housing for offshore applications
  4. D200101: Alternative internal switch insert for Neles limit‑switch box
  5. ND9106: Neles valve positioner for rotary actuator control
  6. D201882: Auxiliary contact module for multi‑loop valve‑status feedback
Add To Quote
Category: SKU: Metso‑Neles D201925 Brand:

Description

Metso‑Neles D201925 Limit Switch Sensor Assembly Module

 

Product Brand & Model Title

Official Product Name: Limit Switch Sensor Assembly Module Brand: Metso / Neles (Valmet) Model No: D201925 Product Grade: Industrial valve position feedback module, installed inside Neles limit‑switch housing for rotary valve actuators

 

General Product Overview

D201925 is an internal core sensing & switch assembly for Neles D‑series limit‑switch boxes (DXP, DXR, DKX). It converts mechanical rotary motion from pneumatic valve actuators into electrical feedback signals, transmitting valve open/closed position status to PLC, DCS or remote control systems. Built for heavy‑duty process industries, this compact module tolerates heavy vibration, humidity and corrosive plant atmosphere. It supports SPDT mechanical contact or inductive proximity sensing versions, delivers reliable valve‑position indication for rotary control valves and on‑off valves.

D201925

Model Coding Definition

  • D: D‑series Neles limit‑switch platform for valve actuator accessories
  • 201925: Unique part identifier for integrated switch‑sensor internal assembly; no variable suffix coding, complete part number = D201925

Note: This is an internal insert module, not a standalone housing; it must be fitted inside Neles DXP/DXR switch box enclosure.

 

Technical Specifications

Electrical Parameters

  • Contact Type: SPDT single‑pole double‑throw mechanical switch / inductive proximity sensor variant
  • Rated Voltage: 24 VDC / 120 V AC (subject to switch configuration)
  • Contact rating: Resistive load, low‑signal level for digital input channels
  • Signal Output: Dry contact feedback for valve position (Open / Closed status)
  • Termination: Screw terminal / plug‑in modular header connection

Environmental Specifications

  • Operating Temperature: −40 ℃ ~ +80 ℃
  • Storage Temperature: −45 ℃ ~ +85 ℃
  • Relative Humidity: 5 %‑95 % non‑condensing
  • Vibration resistance: Suitable for actuator vibration from pneumatic rotary actuators
  • Enclosure Rating: IP66 / IP67 (achieved when assembled inside original Neles D‑series housing)

Mechanical & Certification

  • Form Factor: Compact insert‑type module for inside limit‑switch box
  • Mounting: Installed internally within Neles DXP / DXR / DKX limit‑switch housings
  • Weight: Approx. 85 g
  • Certifications: CE, ATEX/IECEx compliant for hazardous area valve applications

 

Core Product Features

  1. Valve position feedback: Converts rotary actuator mechanical rotation into electrical open‑close status signals for automation systems.
  2. Dual sensing options: Available in mechanical SPDT contact or inductive proximity non‑contact sensing versions.
  3. High anti‑vibration performance: Optimized for pneumatic actuator vibration, prevents false triggering under plant vibration conditions.
  4. Compact insert‑style design: Drop‑in replacement component for Neles D‑series limit‑switch boxes, easy field‑service swap.
  5. Harsh‑environment suitability: Tolerates wide temperature range, high humidity and corrosive atmosphere of refineries & chemical plants.
  6. Flexible system integration: Dry‑contact signal directly compatible with standard PLC / DCS digital input modules.
  7. Hazardous‑location qualified: Matches ATEX/IECEx certified switch housings for explosive‑area valve installations.
  8. Long‑term mechanical life: High cycle rating for frequent‑switching on‑off valve service.

 

Application Fields

‑ Petrochemical & chemical plants: Rotary ball valve, butterfly valve position feedback ‑ Oil & gas refineries: On‑off valve actuator position monitoring ‑ Off‑shore platforms: Valve position indication for process safety loops ‑ Power generation plants: Auxiliary process valve status monitoring ‑ Pulp & paper industry: Metso‑Neles rotary valve field feedback ‑ Water treatment: Process valve position signal transmission

D201925

Product Advantages & Value

‑ Direct drop‑in spare part for Neles original limit‑switch assemblies, simplifies spare‑part management. ‑ Vibration‑resistant construction reduces false valve‑position alarms in pneumatic‑actuator installations. ‑ Wide operating temperature covers most outdoor and heavy‑process plant conditions. ‑ Dry‑contact output compatible with mainstream DCS/PLC DI channels, no extra signal conversion hardware required. ‑ Supports hazardous‑area applications when paired with original certified housing assemblies.

 

Compatible System & Interface Description

‑ Compatible Housings: Neles DXP, DXR, DKX D‑series limit‑switch boxes ‑ Matched Equipment: Neles / Metso pneumatic rotary valve actuators ‑ Signal Interface: Screw terminals for field wiring to control‑system digital‑input cards ‑ Installation: Internal insert component; cannot operate without outer switch‑box housing.

 

Related Recommended Products

  1. DXP‑A: Neles DXP series standard limit‑switch box housing
  2. DXR‑B: Explosion‑proof type limit‑switch enclosure for hazardous zones
  3. DKX: Heavy‑duty on‑site valve feedback housing for offshore applications
  4. D200101: Alternative internal switch insert for Neles limit‑switch box
  5. ND9106: Neles valve positioner for rotary actuator control
  6. D201882: Auxiliary contact module for multi‑loop valve‑status feedback

Related products