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Photoelectric rotary detector
LG-9200

The LG-9200 is a non-contact rotary detector that emits light (red, visible light) from the tip and detects the reflected light that returns after hitting the rotation axis and rotating body. A reflective mark is usually attached to the rotation axis.
By using the reflective mark (HT-011), measurement from an angle becomes possible.
It has a built-in small amplifier that shapes the waveform and outputs a rectangular wave.

While maintaining its lightweight and compact design, the detection distance has been improved to a maximum of 40 mm, and the response speed has doubled to 40 m/s compared to conventional models.

Features

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

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

  • Detectable from close proximity at 0 r/min.

  • Lightweight and compact design (approximately 150 g), with the light-emitting part, light-receiving part, and amplification part integrated into a single structure.

  • Drip-proof connector is standard equipment.

Features of the LG-9200 Measurement

Even if the sensor cannot be placed in front of the rotating object, measurements can be taken from an angle by using a reflective mark (HT-011). Furthermore, since the measurement light source is red visible light, adjusting the optical axis is easy.

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

Case Studies

Fan rotation measurement

Attach the reflective sticker (HT-011) to the fan blade and measure the rotation with the light from the LG-9200.
By connecting to the rotation display TM-4000 series, it becomes possible to obtain analog output of the rotation speed and determine the upper and lower limits of the rotation speed.

  • Fan rotation measurement

Tracking measurement

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

  • Tracking measurement

Motor rotation measurement

Attach the reflective mark (HT-011) to the motor's rotation axis and measure the rotation non-contact with the light from the LG-9200.
By connecting to the Digital Tachometer (TM-4000 series), it becomes possible to display the rotation 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 to 40 mm (when using a dedicated reflective mark of 12 mm square)
Maximum response speed 40 m/s (converted to tangential speed around the rotational axis)
output voltage Rectangular wave output (Hi: +5 V ±0.5 V, Lo: below +0.5 V)
output impedance approximately 1 kΩ
Vibration resistant (when powered) 19.6 m/s 2 in the X, Y, Z axis directions
shock resistant (non-powered) 490 m/s 2 in the X, Y, Z directions (3 times each)
Operating Temperature Range -10 to +60 °C
Storage Temperature Range -20 to +80 °C
Operating Humidity Range 20 to 80%
Storage Humidity Range 20 to 80%
Use power DC 12 V ±2 V
Current Consumption Below 60 mA (at 12 V)
Output Connector Compatible plug: R04-PB6F (Compatible signal cables: MX-7000 and MX-8000 series)
suitable indicator TM Series, RV-3150, ST-1210, CT-6520B, AR-7240B
suitable FV converter FV-1500
Applicable Standards CE marking
Outline Dimensions 21 (W) × 24 (H) × 117 (L) mm

Outline Dimensions
Weight 約150 g
Accessories Reflective mark sheet (12 mm square, 25 pieces), mounting nuts × 2, instruction manual × 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, there is a lineup of four models including the 2-channel input type, reversible counter, and passage time and speed meter. The Digital Tachometer can be customized to match the connected devices. A frequency signal proportional to rotational speed and velocity is converted into voltage and current at high speed for each cycle. A frequency/voltage (current) converter with excellent responsiveness.
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Outline Drawings

Last updated: 2025/09/03