Rotational Speed Sensor - Discount for Exporter

Quick Procurement Summary

We manufacture magnetoresistive speed sensors — also called rotational speed sensors — for steam turbine speed measurement in power plants and steel mills. Each speed sensor model listed on this page is a unique product number that we design, build and test in our own factory. If you need a quotation, send us your model number or drawing, quantity, and target delivery date. In return, we provide technical datasheets, test reports and a confirmed production schedule for your speed sensor order. Request a Quote

What Is This Speed Sensor Used For?

This page covers one specific product family: the magnetoresistive rotational speed sensor used to measure steam turbine shaft speed. It is not a general-purpose speed sensor catalog, and it does not cover other sensing technologies unless a specific model on this page uses that technology. A rotational speed sensor of this type works by detecting the teeth of a trigger wheel (or gear) mounted on the turbine shaft. As the shaft rotates, the magnetoresistive element generates a pulse output signal that is proportional to rotational speed. This signal is sent to the turbine's speed governor, overspeed protection system, or condition-monitoring system. Because steam turbines operate continuously under high temperature, vibration and, in many installations, oil mist or steam contamination, the speed sensor's mechanical design, sealing and materials matter as much as its electrical specification. Every model we manufacture is built and tested for this specific duty.

Technical Specifications

Each speed sensor model is manufactured to its own fixed specification. Select a model based on your turbine's speed measurement point, mounting envelope, output signal requirement and ambient conditions.
Item Description
Manufacturer Yoyik
Sensor Type Magnetoresistive rotational speed sensor
Measurement Point Steam turbine rotor / shaft speed
Speed Range 0~3000RPM
Output Signal Square wave
Supply Voltage 24 VDC
Gear Tooth Involute tooth profile
Gear module 2-4
Thread Size Thread diameter and length
Probe Length 50~200 mm
Cable Length Customizable
Connector Type Embedded cable or Aviation connector
Operating Temperature -20~120°C
Housing Material Stainless steel

How to Select the Correct Model

  1. Confirm the measurement location — main shaft speed, overspeed trip, or turning-gear/zero-speed point.
  2. Confirm the mounting dimensions and thread/flange type from your drawing or the existing sensor's nameplate.
  3. Confirm the required output signal type, number of channels and supply voltage for your governor or monitoring system.
  4. Confirm ambient conditions — operating temperature, vibration level, and whether the location is exposed to oil, steam or moisture.

All values in the table above are for reference only; actual figures depend on the specific model or specifications in your inquiry.

Applications in Power Plants & Steel Mills

Steam Turbine Speed Monitoring

Our speed sensors are used to monitor the rotational speed of steam turbine rotors in real time, feeding data to the turbine governor and control system in power generation units.

Overspeed Protection

As an overspeed protection sensor, this speed sensor is installed on the turbine's overspeed trip system, where reliability and long-term stable operation under continuous duty are the primary design requirements.

Zero-Speed and Turning Gear Detection

For turning-gear operation and shutdown monitoring, the same sensor family is used as a zero-speed sensor to confirm whether the turbine shaft is stationary or rotating at very low speed.

Power Plant Applications

Typical installations include main steam turbine generator units, boiler feed water pump turbines, and waste heat recovery steam turbines in power plants.

Steel Mill Applications

In steel mills, this rotational speed sensor is used on captive power plant steam turbines, waste heat recovery turbines, and steam turbines that drive compressors or blowers in the production process.

Working Environment

These speed sensors are designed for high-temperature, high-vibration, continuous-duty environments, including locations exposed to lubricating oil and process contamination — conditions typical of turbine houses in both power plants and steel mills.

Supply, Quality Assurance & Lead Time

Factory Direct Manufacturer

We manufacture these speed sensor models ourselves. We are the factory, not a trading company or reseller, and every unique model number on this page is produced under our own quality system.

Production

Production is organized by model number, order quantity, customer drawing and confirmed technical parameters before manufacturing begins.

Quality Control

Each speed sensor batch is tested before shipment, including:
  • Output waveform test
  • Rotational speed simulation test
  • Insulation resistance test
  • Dielectric withstand (high-voltage) test
  • High/low temperature test
  • Vibration test
  • Burn-in / aging test

Documentation Provided

  • Datasheet
  • Dimensional drawing
  • Wiring diagram
  • Factory test report
  • Packing list

Frequently Asked Questions

What is this speed sensor used for? It is used for steam turbine speed measurement — including main shaft speed, overspeed protection, and turning-gear/zero-speed detection — in power plants and steel mills.
Is this a magnetoresistive speed sensor? Yes. Every model on this page is a magnetoresistive rotational speed sensor designed specifically for steam turbine speed measurement.
Which speed sensor models do you manufacture? See the model list in the Technical Specifications and Related Products sections above. Each listed model number is manufactured by us in our own factory.
What output signal can the speed sensor provide? Square wave / pulse output is available, with channel count and supply voltage options that vary by model — refer to the specification table for your selected model.
What is your lead time? Lead time is confirmed by model and order quantity once your inquiry is reviewed.

Request a Quote

Send your speed sensor model number, drawing, or a nameplate photo. Our technical team will confirm production feasibility, technical data, lead time and pricing.

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Rotational Speed Sensor Stands Out Your Trusted OEM Partner

Rotational speed sensors are critical for reliable machine control, process optimization, and safety across automotive, industrial, and robotics sectors. Choosing a trusted OEM partner ensures seamless integration of sensing solutions—from initial design concepts through prototyping, calibration, and validated production. A proficient supplier offers robust, compact sensors with high accuracy, wide temperature range, EMI resistance, and secure interfaces, backed by rigorous testing and traceability. With standardized data outputs and plug-and-play compatibility across platforms, your global procurement can achieve faster time-to-market while maintaining consistent performance, even in harsh environments or remote locations. Beyond components, an experienced OEM partner provides end-to-end support: engineering collaboration, confidential IP handling, scalable manufacturing, and flexible lead times to match demand swings. Comprehensive quality management, certification compliance, and transparent documentation ensure smooth audits for multinational plants. Coupled with dependable logistics, local warehouses, and proactive after-sales service, this partnership reduces risk and unlocks long-term value for global buyers seeking reliable, repeatable supply of rotational speed sensing solutions.

{ Rotational Speed Sensor Stands Out Your Trusted OEM Partner }

Model Sensor Type Measurement Range (RPM) Resolution (RPM) Accuracy (%) Repeatability (%) Output Interface Supply Voltage (V) Power (W) Operating Temp (°C) Response Time (ms) Certifications
RS-SX01 Hall-effect 0 - 10,000 1 ±0.25 ±0.10 CAN 2.0B 12 1.2 -40 to 125 0.5 CE, RoHS
RS-SX02 Optical 0 - 20,000 0.5 ±0.20 ±0.08 SSI 5 0.8 -20 to 85 0.8 CE, RoHS, REACH
RS-SX03 Magnetic inductive 0 - 15,000 1 ±0.30 ±0.12 PWM 24 1.5 -40 to 125 0.6 CE
RS-SX04 Hall-effect 0 - 30,000 0.5 ±0.15 ±0.05 CAN-FD 12 1.4 -30 to 120 0.4 CE, RoHS, UL
RS-SX05 Optical 0 - 120,000 0.1 ±0.10 ±0.03 CAN 24 2.0 -55 to 150 0.3 CE, RoHS, UL, REACH
RS-SX06 Magnetic 0 - 5,000 0.5 ±0.25 ±0.07 Analog 0-5V 5 0.6 -20 to 85 1.2 CE
RS-SX07 Optical 0 - 50,000 0.2 ±0.12 ±0.04 SSI 12 1.1 -40 to 110 0.9 CE, RoHS

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Rotational Speed Sensor Industry Leaders Exceeds Industry Benchmarks

New Data Insight Title: Precision Trajectory Across RPM for Rotational Speed Sensors

Data Dimension: Sensor Precision vs. Rotational Speed (RPM)

Sensor precision vs RPM line chart A line chart showing sensor precision (%) across RPM from 1000 to 6000. 1000 2000 3000 4000 5000 6000 97.0 98.0 99.0 100.0

Explanation of the chart: This analysis investigates how rotation speed affects the precision of a common rotational speed sensor. The dataset comprises measurements collected across an RPM range from 1,000 to 6,000, with precision defined as the percentage closeness of the reported speed to a high‑accuracy reference. The main trend shows that, as the sensor operates at higher RPM, the measured speed becomes more consistent, yielding higher precision. The initial increase from 1,000 to about 3,000–4,000 RPM reflects improvements in signal quality, reduced relative noise, and more effective calibration. The data plateaus near the upper end of the range, with precision approaching 99.9% to 99.92%, indicating a ceiling imposed by fundamental hardware limits such as sampling rate, jitter, and interpolation. The tight clustering of points toward the right side of the chart signals improved stability at higher speeds, a feature highly valued in dynamic control systems where consistent timing is critical. In this context, industry leaders that exceed benchmarks typically employ higher‑resolution analog‑to‑digital converters, advanced digital filters, real‑time compensation for temperature drift, and robust calibration routines. The result is a measurable reduction in error across the RPM spectrum and a suppression of outlier readings during rapid changes. The line in the chart summarizes this trajectory, with each data point representing an independent measurement under controlled conditions. The visualization emphasizes a clear correlation between speed and precision and illustrates the diminishing returns that occur as the sensor approaches its physical limit. For engineers and manufacturers, this dimension—precision versus RPM—serves as a practical benchmark for sensor selection and optimization. For customers, it demonstrates the reliability of sensing in demanding operating regimes, informing decisions about system integration and long‑term performance expectations. Overall, the chart reinforces the narrative that leading sensors deliver stable, high‑precision readings across a broad speed range, supporting more accurate control and safer operation in real‑world applications.

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