SITRANS WM300 Motion Sensor - USA

A compact, rugged and reliable controller for motion monitoring

The SITRANS WM300 MFA is a highly sensitive dual setpoint motion sensor system, used with up to 2 MSP and XPP probes. It is capable of hi/lo setpoint as well as differential monitoring with 2 additional probes.

WM300 Catalog Specifications

Download PDF


The SITRANS WM300 MFA detects changes in the motion and speed of rotating, reciprocating or conveying equipment which is used to indicate a slow down or failure of machinery. Early warnings of a malfunction can prevent damage to valuable process equipment. The dual setpoint system suits most industrial applications. 


A special feature is the adjustable 0 to 60 second time delay, allowing the monitored device to accelerate to normal running speed before monitoring begins. A wide range of probes are available to suit specific needs, including high temperatures and corrosive installations. SITRANS WM300 MFA consistently meets the needs of mining aggregate, cement and other primary and secondary industries.


Key Applications: tail pulleys, motor shaft sensing, screw conveyor flights, bucket elevators, fans, pumps


  • Up to 4" (100 mm) gap between target and probe
  • Over and under speed setpoint detection
  • Setpoint adjustment range 2 to 5000 Hz (120 to 300,000) ppm
  • Adjustable start-up time delay
  • Visual indication of probe operation and relay status
  • General purpose, suitable for majority of applications: rugged probe designs provide unmatched reliability

Technical specifications

Measurement Types

Non-contact motion monitoring, differential speed detection and tachometer

Measurement Range
Up to 4" (100 mm)
4 relays
2, 4 - 20 mA outputs (NCT)
Process Connections
2" NPSL motion probes
Remote display, high temp probes, mA output card, MSP-12 converter

Download, Support, Services

Find downloads, support and services for Siemens process protection
Support Request

The fastest way to the experts

Proposed solutions for your queries and direct access to our experts in Technical Support.

Service offers

To remain competitive, companies in industry must ensure – and ideally increase – the availability and productivity of machines and plants. As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise.

Service catalog

As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise. With our offerings, you can expect a high degree of reliability and a successful digital future for your company.

Well trained for excellent handling

Receive standardized or individual expertise directly from the manufacturer – with training centers in more than 60 countries.

Safety integrated

Safety is key in the process industries. A failure in instruments relevant for safety may have serious implications for humans, the process and the environment. Therefore, a wide range of our process instruments come with on-board safety features for maximum risk reduction.

Learn more

Success Stories

Process protection in action


How can we help you?

Whether you need to measure pressure, temperature, flow, level or weight, Siemens has best-in-class instruments to suit the unique needs of your plant or application - along with a global network of technical support available 24 hours a day, 7 days a week. Our high-performance and cost-efficient range of industrial solutions also includes devices for valve positioning, process protection, recording, controlling, communication and more.

Customer Support: 1-800-333-7421

Contact Us