Skip to main content

Select your region & language

Global

Region

Photoelectric rotation detector
LG-9200

The LG-9200 is a non-contact rotation detector that emits light (red, visible light) from its tip and detects the reflected light that returns after hitting a rotating shaft or rotating body. It is typically used with a reflective mark attached to the rotating shaft.
By using the reflective mark (HT-011), measurements can be taken from an oblique angle.
It has a built-in small amplifier that shapes the waveform and outputs a square wave.

While maintaining its lightweight and compact design, the device boasts double the performance of previous models, with a maximum detection distance of 40 mm and a response speed of 40 m/s.

Features

  • Improved detection performance. Twice that of previous models (detection distance: maximum 40 mm, response speed: 40 m/s)

  • Easy alignment (with visible light and operation indicator lights)

  • 0 r/min: Detectable from close range.

  • Lightweight and compact design (approximately 150 g), with an integrated structure for the light emitter, light receiver, and amplification unit.

  • Splash-proof connector is included as standard equipment.

Features of the LG-9200 measurement device

Even if the sensor cannot be placed directly in front of the rotating object being measured, the reflective mark (HT-011) allows for measurement from an oblique angle. Furthermore, the use of red visible light as the measurement light source facilitates easy adjustment of the optical axis.

  • Features of the LG-9200 measurement device
  • Measurement range of LG-9200
    Measurement range of LG-9200

Case Studies

Fan rotation measurement

Attach reflective stickers (HT-011) to the fan blades and measure the rotation speed by shining the LG-9200 light on them.
By connecting to the TM-4000 series rotation indicator, it becomes possible to output analog rotation speed and determine the upper and lower limits of rotation speed.

  • Fan rotation measurement

Tracking Measurement

Vibration monitoring of bearing shafts and vibration testing of motors require simultaneous vibration measurement and rotational measurement.

  • Tracking Measurement

Motor rotation measurement

A reflective mark (HT-011) is attached to the motor's rotating shaft, and the LG-9200's light is shone on it to measure the rotation without contact.
By connecting to Digital Tachometer (TM-4000 series), it becomes possible to display the rotational speed and output data.

  • Motor rotation measurement No. 1
  • Motor rotation measurement No. 2

Specification

  LG-9200
Detection method Photoelectric reflection method
Light source Light-emitting diode (red, visible light)
Detection distance Recommended distance: 20–40 mm (when using 12 mm square dedicated reflective markings)
Maximum response speed 40 m/s (converted to peripheral speed of the rotating shaft)
Output voltage Square wave output (Hi: +5 V ±0.5 V, Lo: +0.5 V or less)
Output Impedance Approximately 1 kΩ
Vibration resistance (current carrying) 19.6 m/s 2 X, Y, Z axis direction
Shockproof (non-electric) 490 m/s 2 X, Y, Z axis directions (3 times each)
Operating temperature range -10 to +60°C
Storage temperature range -20 to +80°C
Operating humidity range 20-80%
Storage humidity range 20-80%
Power supply used DC 12V ±2V
Current consumption 60 mA or less (at 12 V)
Output connector Compatible plug: R04-PB6F (Compatible signal cable: MX-7000/MX-8000 series)
Compatibility indicator TM series, RV-3150, ST-1210, CT-6520B, AR-7240B
Compatible FV converter FV-1500
Applicable standards CE marking
Outline drawings 21 (W) x 24 (H) x 117 (L) mm

Outline drawings
Weight 約150 g
Accessories Reflective markings (1 sheet, 25 pieces, 12 mm square), mounting nuts x 2, instruction manual x 1
price  
Option HT-011 反射マーク （12 mm角 25枚取りシート 10枚1組）：  

Related Products

TM-4000 Series Digital Tachometer FV-1500 High-Speed F/V Converter
TM-4000 Series Digital Tachometer FV-1500 High-Speed F/V Converter
In addition to the 1-channel input type, the lineup includes four models: a 2-channel input type, a reversible counter, and a pass time/pass speed meter. Digital Tachometer can be customized to suit the connected equipment. This frequency/voltage (current) converter performs high-speed conversion of frequency signals, proportional to rotational speed or other speeds, into voltage and current in each cycle.
より  
Inquire about this product

Download

Outline Drawings

Last updated: 2025/09/03