Remote Optical Laser Sensor ROLS-5PW

Laser speed sensor, also known as speed photoelectric sensor, speed sensor, Rotational speed sensors or laser speed photoelectric probe, emits laser light through a laser transmitter to illuminate a rotating object. The object reflects the laser back, and the laser receiver filters and amplifies the reflected pulse signal. The speed sensor is capable of measuring the rotational speed of various rotating objects from a distance.

LUYOR Remote Optical Laser Sensor ROLS-5PW has a built-in high-frequency filtering circuit, which makes it free from light interference. Equipped with a high-power laser, ROLS-5PW can measure a distance of up to 7 meters and detect weak signals. ROLS-5PW features anti-reverse connection, voltage stabilization protection circuits, and a large diameter reflective lens. Its laser beam can achieve high-precision RPM measurement of rotating components, with an effective sensor range of up to 5 meters.

Figure 1: LUYOR Remote Optical Laser Sensor ROLS-5PW

The Principle of Remote Optical Laser Sensor ROLS-5PW

Laser photoelectric speed sensor is a sensor that uses the laser photoelectric effect to measure the speed of an object. The main measurement principle is to determine the rotational speed of an object by utilizing the characteristics of the reflected laser beam on the surface of the object. When the laser beam strikes the surface of an object, it will be reflected back to the sensor. The photosensitive element in the sensor can convert the reflected laser signal into electrical signals, and by processing these electrical signals, the rotational speed of the object can be determined.

When using a laser photoelectric speed sensor, it is necessary to fix the sensor on the object to be measured and ensure that the laser beam is perpendicular to the surface of the object. When an object starts to rotate, the laser beam will be reflected back to the sensor. As the rotation speed changes, the reflected signal will also change accordingly. By processing the reflected signal, the rotation period and angle of the object can be determined. Thus, the number of rotations and angular velocity of the object per second can be calculated. These data can be used for controlling and monitoring in the control system.

ROLS-5PW Remote Optical Laser Sensor is a high-precision, high-sensitivity, and high-reliability sensor that measures the speed of an object based on the principle of photoelectric effect. It's versatile and easy to operate. ROLS-5PW can be widely used in industrial automation control, mechanical manufacturing, aerospace and other fields.

Figure 2: LUYOR Remote Optical Laser Sensor ROLS-5PW

Rotational Speed Sensor ROLS-5PW Product Features

1. High accuracy

2. Built in high-frequency filter, not affected by light interference

3. High-power 650nm laser, measuring distance up to 7 meters

4. A signal indicator light on the back

5. Built-in anti-reverse connection and voltage stabilization protection circuit

6. Large diameter reflective lens, capable of detecting weak signals

7. Integrating the laser transmitter, receiver, and signal amplifier together in a lightweight and compact pack

8. Non-contact detection will not increase load on the measured object

9. Optional L-shaped fixtures, which are small and easy to install

Figure 3: LUYOR Rotational Speed Sensor ROLS-5PW attached on a magnetic base

Rotational Speed Sensor ROLS-5PW Technical Data

Output: pulse output

Range: 1-300,000rpm（1-5,000Hz）

Operation distance: up to 7 m

Power supply: 5V DC

Current: < 30 mA

Short circuit protection: Yes

Reverse Voltage protection: Yes

Over-Voltage protection: 15 V - 1 minute

Operation Temp: -10 - 50°C

Storage Temp: -40 - 85°C

Protection grade: IP60

Impact resistance: IEC 60028-27

Material: Nylon

Weight: 38 g

Extension cable: up to 100 m

Accessories: 2.4m cable, reflective stickers, mounting bracket

Optional Accessories: magnetic base

Connection: brown (positive power supply), black (signal), blue (common)

Rotational Speed Sensor ROLS-5PW Configurations

Figure 4: LUYOR Rotational Speed Sensor ROLS-5PW attached on the L-type bracket

Frequently Asked Questions

1. What is the voltage and power of the remote optical laser sensor?

The voltage of the remote optical laser sensor is 5V, and the current is 35mA.

2. What is the output signal of the remote optical laser sensor?

The output is a TTL signal (PNP signal).

3. How to connect the sensor cable?

The sensor signal wire consists of three wires: brown connected to positive power supply, blue connected to common, black connected to the signal, and shielding connected to the housing ground.

4. How many meters can the signal cable be extended?

The standard configuration is a 2.4m. You can also choose 7.6m, 15m, 30m, or 60m.

5. Is it necessary to use reflective stickers for measuring rotational speed?

Yes, stickers reflect laser beams back to the receiver. Stickers are necessary for accurate measurement.

6. How far can the target be measured?

Within 7.6 meters.

7. Is the sensor waterproof?

The sensor cannot be washed with water. When using outdoor, be sure to cover it from the rain.

8. How long is the lifespan of the sensor?

The average lifespan of LED laser is 5,000-20,000 hours.

9. How to repair the sensor?

Please do not attempt to disassemble the sensor by yourself. The sensor must be repaired by professionals from LUYOR Service Center.

10. What is the blue LED on the back used for?

The blue LED on the back is the signal indicator. It will blink at the input frequency rate when the ROLS is properly aimed. It will blink on and off at slow speeds and remain on steady at high speeds.

11. Can sensors be connected to other manufacturers' stroboscopic devices as external trigger signal inputs

Yes, but it is necessary to connect according to the instructions provided by the stroboscope manufacturer. LUYOR sells connection cables for Monarch, Rheintacho, and Shimpo DT3015N.

12. Is the sensor portable?

Yes, SPLS-5PW has a built-in lithium battery.

13. Can ROLS-5PW be used outdoor?

Yes, ROLS-5PW has a built in high-frequency filter, so it is not affected by light interference. Be sure to cover it from the rain.

14. What is TTL Signal?

TTL signal is a level signal, which refers to a signal represented by a level value. The TTL level signal specifies that+5V is equivalent to logic "1" and 0V is equivalent to logic "0" (when data is represented in binary). This method of data communication and level regulation is called a TTL (Transistor Transistor Logic Level) signal system.

Figure 5: The L-type bracket for rotational speed sensor ROLS-5PW

Connect Remote Optical Laser Sensor ROLS-5PW to Data Logger

    LUYOR remote optical laser sensor ROLS-5PW is designed to be compatible with different data loggers. Please see below for detailed connection methods, and contact us if you need technical support.

1. Connect to SIEMENS LMS data logger

We offer connection cables to connect remote optical laser sensor ROLS-5PW to SIEMENS data logger. By connecting laser sensor ROLS-5PW to T1 and T2 inputs, there is no need to provide additional power supply for laser sensor.

2. Connect to HEAD data logger

    Using data connection cable LUOYR-hdcsbv2, you can connect the pulse output of LUYOR self-powered speed sensor directly to the pulse input of HEAD data logger to transmit data.

3. Connect to HIOKI data logger

    The HIOKI LR8450 data logger can simultaneously collect 8 channels of speed data and provide power supply to speed sensors. LUYOR remote optical laser sensor ROLS-5PW can be connected to HIOKI LR8450 data logger through standard connection cable. For HIOKI LR8431 data looger, use connection cable HIOKI 9641 and LUYOR self-powered speed sensor. For MR6000、MR8847A、MR8827 data logger, use 8970 frequency unit and LUYOR self-powered speed sensor to collect and record speed data.

4. Connect to GRAPHTEC GL240、GL840 data logger

The pulse signals of the speed collected by GRAPHTEC GL240, GL840 and other data recorders are collected through four logical channels. Use GRAPHTEC B-513 data connection cable and LUYOR self-powered speed sensor to measure and collect the speed data.

4. Connect to NI9411 module

LUYOR laser sensor ROLS-5PW can be connected to NI9411 module as shown below.

Safety Instructions

Diode Laser

Max. Output Power: <1 milliwatt

Wavelength: 650 nanometers (visible light)

Beam Divergence: <18 milliradian

Output: Continuous (CW)

Laser Hazard Classification: Class 2 Laser

Hazards

Eye injury from beam - Do not look into the direct or reflected beam. It can cause eye injury up to 25 ft (7.5 m) away.

Visual interference (glare) with pilots and drivers - Interferes with vision up to 525 ft (160 m) away. Can be a distraction up to 1 mile (1.6 km) away. NEVER point any laser towards aircraft or vehicles. It is unsafe and illegal.

LUYOR offers OEM services for rotational speed sensor ROLS-5PW, please email us if interested.