At what timing is the reciprocating motion measured as velocity?

Velocity is calculated by treating one complete cycle of the voltage waveform from the laser displacement sensor as a single pulse. The SPD series adapts flexibly to various sensor outputs with trigger levels fully adjustable from 0 to 9V.

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Measuring Reciprocating Motion Velocity with Laser Displacement Sensors

Q: What are the advantages of using a laser displacement sensor?

Since it measures without contact, it eliminates target damage or deformation, making it suitable for high-temperature, micro-sized, or complex-shaped objects. It also allows measurement in confined or tight spaces where gear sensors cannot be installed.

Measure the velocity of reciprocating motion using a laser displacement sensor (voltage output type).

By using a laser sensor, non-contact measurement can be achieved even in confined or narrow spaces.

The speedometer features an adjustable trigger level from 0 to 9.00V in 10mV increments, making it compatible with a wide range of sensors.

Overview

This application uses a laser displacement sensor corresponding to the reciprocating stroke range and a speedometer/tachometer (such as the SPD-4801).
The sensor outputs a voltage signal proportional to the distance to the target object (e.g., 0V at 100mm, 10V at 600mm).
The measuring instrument calculates the velocity by treating one complete cycle of the input waveform generated by the reciprocating motion as a single pulse.

Advantages of Laser Displacement Sensors

High Measurement Precision

Measurable in Tight Spaces

Pinpoint Long-range Measurement

Demonstration Video　*No Audio

Velocity Measurement & Signal Conversion

SPD Series
SPD48

Trigger Level (Threshold) 0-9.00V Variable
Compatible with Various Sensors
While many standard measuring instruments are fixed at 2.5V,
the SPD series can be configured from 0 to 9V in 10mV increments.
This ensures compatibility with a wide variety of sensors.

	or		waveforms can be accepted.
Threshold: 0.5V		Threshold: 7V

Measurement Capabilities

High Precision & Fast Response (Speedometer)

Our unique proprietary algorithm, Periomatic^TM, ensures high accuracy from ultra-low to high speeds. It tracks sudden velocity fluctuations at high speeds.

What is Periomatic^TM?

CAN Output of Measured Values (Speedometer)

CAN Continuous Output Function
Easily acquire measured values as digital data. *Depending on the model

Output Update Rate: Up to 1ms

Compatible protocols include SAE J1939 (DLC 8 bytes or less). *Please consult us for details.

Analog Output of Measured Values (Speedometer)

Output Update Rate: Fast as 0.1ms～

Output Signals (To be specified at the time of order)

0-10V

0-5V

±10V

±5V

4-20mA

Scalable Full-Scale Value Settings

Alarm/Alert Output (Speedometer)
Outputs signals when the velocity goes above or below specified limits.

Measurement in Confined Spaces (Laser Displacement Sensor)
Enables measurement in tight spaces where gear sensors or other physical probes cannot fit.

Non-Contact Measurement (Laser Displacement Sensor)

No contact with the object eliminates damage or deformation.

Applicable to high-temperature, micro-sized, or complex-shaped targets.

No probe wear allows for stable, long-term measurement.

Key Selection Points (Speedometer)

Versatile Trigger Levels (Thresholds):
While standard devices are often fixed at 2.5V, the SPD series allows configurations from 0 to 9.00V in 10mV steps, adapting to various sensor outputs.

	or		waveforms can be processed.
Threshold: 0.5V		Threshold: 7V

Proprietary Periomatic^TM Technology

What is Periomatic^TM?

High-Speed Update Analog Output

0-10V

0-5V

±10V

±5V

4-20mA

CAN Output with up to 1ms Update Rate

Extensive Product Variations

Customization Support: Multi-channel options, enclosed cases, and mixed measurement types.

Product Introduction

All Products List

Speedometers List

F/V Converters List

Selectable Velocity/Totalizer
Size: 48x98 mm
SPD-4801

■ Versatile unit switchable between speedometer, frequency meter, tachometer, flow meter, and totalizer modes.

■ Supports simultaneous output of 16-bit analog data (0.1ms update) and CAN data (1ms update).

■ High precision and ultra-fast response from extremely low to high rotation speeds via proprietary Periomatic^TM technology.

■ Fully adjustable trigger levels (0-9.00V), hysteresis, pull-up settings, and low-pass filters.

■ Front-panel buttons allow seamless configuration and measurement operations.

■ Simplified setup and management via our free dedicated software, LINKSHIP.

Selectable Velocity/Totalizer
Size: 24x48 mm
SPD-24 Series

Low-Cost Version
SPDL-24 Series

■ Multi-functional unit switchable for velocity, frequency, rotation, flow, and totalization tracking.

■ Simultaneous output of 16-bit analog (0.1ms) and CAN (1ms) is standard.
　*SPDL series operates at a 40ms update rate.

■ Employs unique Periomatic^TM technology for fast response and stable tracking across all speed ranges.

■ Fine-tune trigger levels (0-9.00V), hysteresis, pull-ups, and low-pass filtering values.

■ Highly versatile form factor ideal for panel mounting, DIN rail attachment, or portable use.

■ Easily manage configuration profiles using our free LINKSHIP utility software.

Pocketable
Velocity/Totalizer
SPD-HD

■ Selectable multi-mode instrument supporting speed, frequency, RPM, flow, and totalizer functions.

■ Handy, lightweight design ideal for on-site quality testing, facility maintenance, and operational checks.

■ Outfitted with simultaneous 16-bit analog (0.1ms) and CAN (1ms) signal outputs.

■ Dual 2-WAY power supply system: Uses 4 AA batteries for field mobility or the included AC adapter.

■ Driven by Periomatic^TM technology for outstanding response speed and accuracy across all bands.

■ Tailor trigger levels from 0 to 9.00V, with adjustable hysteresis, low-pass filter, and pull-up configuration.

■ Convenient 3-WAY setup method: via built-in buttons, PC software, or an external handheld programmer.

■ Selectable connector configurations, featuring our unique retractable BNC style or terminal blocks.

Other Related Products Panel Meters / Signal Converters / Indicators

Product Lineup >

EX Series　Series Lineup >

- CAN Output
- 16-bit Analog (Voltage/Current) Output
- USB Type-C: Configuration & Data Logging
- Alarm Output / RS-485 Communication
- LINKSHIP Setup Software (Free): Report printing & data logging capabilities
- Dual Analog Outputs [EX48]
- Ethernet (LAN) Support [EX48]

Load Cell/Pressure/Strain CAN Conversion DC Current DC Voltage Thermocouple (Temp) Thermistor (Temp) RTD (Temp) Resistance Speed/Totalization Freq Deviation/Torque

EX48

EX(L)24

Smart Configuration & Logging

Manage profiles, print inspection reports, and log CSV data easily via our free LINKSHIP software. > View LINKSHIP Page

CSV Data Logging

Log parameters at user-defined intervals. Custom loggers can be developed.

Compare Profiles

Compare and verify parameter cross-lists across multiple units simultaneously.

Save & Copy via PC

Eliminate manual input mistakes while lowering data management costs.

Prevent Setup Errors

Configure visually on a PC screen to prevent accidental on-device button operations.

Reduce Setup Steps

Copy master configuration data directly to deploy setup across multiple modules rapidly.

Standard USB Type-C Integration

Front-Facing USB: Setup, Logging, & Power

Configuration, data tracking, and power supply can also be managed via rear terminals*. Rear-facing USB modules are also available.
*Rear terminal block logging/configuration requires the CAN or RS-485 option.
*For the Load Cell/Pressure model ST(L), power must be routed via the rear terminal block rather than the USB connector.

Rear-Facing USB: Setup & Logging

Can also be configured via front panel buttons or rear terminal blocks.
*Rear terminal block logging/configuration requires the CAN or RS-485 option.

Ethernet (LAN) option variants are also supported.

Handheld Programmer:
No LINKSHIP or PC Required
[Sold Separately]

> PL-5A Product Page

*For setting adjustment only; does not support data logging or power delivery.

Effortless Wiring & Mounting

Designed for exceptional field usability.

Detachable Plug Connectors
Wire up the connector block and just plug it in.

Detachable Plug Connectors
Spring-Lock Style [Standard]

Detachable Plug Connectors
M2 Screw Style [Optional]

Fixed Connector Types
[Custom Builds Supported]

Mounting Hooks [Left/Right]
Quick tool-free attachment and detachment.

Front Panel Controls
Keylock mechanism prevents operational mistakes.

(A) Status Indicator LEDs
(B) Front Membrane Buttons
[Program Mode]: MODE, Digit Select, Value Adjustment, ENTER
[Measurement Mode]: Span Shift, Zero Shift
Keylock control functions, etc.

Front panel overlay variations: Blue/Pink styles [Optional]
*Aesthetic design details are subject to change.

Mounting Hooks [Left/Right]
Attach or detach components quickly without tooling.

Highly Adaptable Deployment

Portable Field Use

Carry your PC, tablet, sensor module, and leads to run mobile field measurements via USB bus power*. Specialized carrying case BXS-1 is sold separately.
*For Load Cell/Pressure model ST(L), route power via the rear terminal block rather than the USB port.

> BXS-1 Overview

Control Panel Integration

Compact 24x48 mm profile contributes significantly to system downsizing.

> 24x48 mm Dimensions

DIN Rail Installation

One-touch rail adaptors and displayless space-saving configurations are available.


BXF-DN2 DIN Rail Adaptor (Optional)	Type 2451 Displayless Type	Type 2431 With Display Window
> BXF-DN2 Product Page	> View details for 2451 & 2431

Full Customization Services [Please Consult Us]

Custom Solution Lineup >

■ Flexible measurement pairing & channel layout ■ Cost-efficient and user-friendly structural design ■ Parameter adjustments (custom power input, scaling voltages, specialized communication specs)
■ Available from single-unit runs ■ Calibration tailored to assembly units ■ Inspection certifications and traceability charts can be provided