Optical Micrometer for the final measurement of discrete parts during lengthwise transport
μMETER-SLM product series is used for the non-contact final measurement of discrete parts lengths in the production process, while transporting the discrete parts in longitudinal direction. The highly accurate measurement of the optical light scanner generally serves the production optimization, the good/bad sorting as well as the documentation of the delivery condition of discrete parts. The SLM product series is based on a worldwide unique LED length-section light scanner measurement technology called Optical Micrometer/Measuring Light Scanner. SLM systems are maintenance-free, permanently calibrated and measure largely independent of material. SLM systems are used for the highly accurate, non-contact length measurement of profiles, tubes, plates, beams, bolts, struts, hubs made out of a wide variety of materials. SLM length-section light scanner for discrete part length measurement are available in two versions. By the standard SLM system, discrete parts up to approx. 5 m in length can currently be measured, depending on the system length. The two-parted SLM/2 systems are used for the re-measurement of discrete parts with a length longer than 5 m, or when no continuous SLM measuring arrays can be used.
Product Types – Length-Section Light Scanner Discrete Part Length Measurement System
Standard SLM systems with continuous transmitter and receiver arrays for a highly precise final measurement of discrete parts being transported in longitudinal direction – measurement of plates, profiles, tubes, beams, bolts, rolls, … up to a maximum of 5 m length
SLM System with two-parted transmitter and receiver arrays for a highly accurate final measurement of discrete parts up to 15 m being transported in longitudinal direction
Technical Data – Length-Section Light Scanner Discrete Part Length Measurement Systems
|System Components||Transmitter and Receiver Arrays||Transmitter and Receiver Arrays||Two-Parted Transmitter and Two-Parted Receiver|
|Types||shortest SLM System||longest currently available SLM System||Measurement Range of max. 4,5 m (e.g. for part lengths of 10 m to 14,5 m)|
|Measurement Material Length||10 mm to 126 mm||10 mm to 4.860 mm||Based on the Project|
|Systematical Measurement Accuracy||± 0,1 mm/m||± 0,1 mm/m||typically: ± 0,1 mm/m (Based on the Project)|
|Repetitive Accuracy||± 0,03 mm (confidence interval 1σ)|
|SLM Arrangement of Transmitter and Receiver to each other||horizontal, vertical or diagonal|
|V-Measurement Range||0,1 m/min → 250 m/min||0,1 m/min → 100 m/min (higher Vmax on request)||Depending on Sensor Length and Module Distance|
|Measurement Distance between Transmitter and Receiver Array||150 mm to 1.000 mm|
|Interfaces||1 x RS-485|
|I/Os||Input: Start, Gate, Calibration
|I/O Type||RS‐422 Gauge|
|Available Data||Speed, Length, Signal Quality, Status, Valid Measurement|
Profibus-DP, ProfiNet‐RT, Ethernet‐IP, …
|Protection Class||Sensor Lines: IP50|
|Sensor Lines: 30x30mm Profil cross section, Bosch-Rexroth, Length depending on maximum measurement material length|
|Power Supply||12 – 24 VDC|
|Weight||Sensor Lines: Depending on length – ca. 1 kg per meter of gauge array|
|LED Data||5mW, Infrared|
|Ambient Temperature||5 to 55°C ‐ not condensing, outside of temperature range external cooling / heating required|
|Humidity||Environment should be dry|
Accessories for Length-Section Light Scanner Discrete Part Length Measurement Systems
Interface Box for PC Operation
|Interface box for connecting the SLM system to a PC or laptop. Allows for easy connection and supply of the SLM sensor. With RS485 output interface and plug-in power supply.|
|Sensor cable for connecting the two SLM sensor lines with each other and for connection to an interface such as SLM box or bus module, a controller or a display.|
Displays and Control Units
|Interface box with length display for connecting the SLM system to a PC or laptop. Box with RS485 output interface and plug-in power supply.|
|Display and Control Unit for the SLM sensors provide the following features:
|The SPS sorting control for the SLM sensors provide the following features:
Feldbus and Communication Modules
|Profibus-DP, ProfiNet-RT, Ethernet-IP
µSPEED-PB, µSPEED-PN, µSPEED-EN
|Standard bus interface modules with the following output: Length (in m) , speed (in m/s), status signal (valid/invalid)|
Conveyor Technology and Sorting Technology
|Conveyor Technology and Sorting Technology||Conveyor technology, conveyor belts, carriages, slide rails, push-out devices and sorting machines are offered together with experienced partner companies.|
Length-Section Light Scanner Discrete Part Length Measurement Systems
The discrete part to be measured passes through the SLM System without stopping in longitudinal direction. As soon as the discrete part is located completely between both sensor arrays (a light transmitter array and a receiver array), a measurement is automatically triggered. To ensure that the measurement takes place with high accuracy, the discrete part already has to be separated while in supply, however, a distance between two subsequent discrete parts of only 10 mm to 50 mm is sufficient. In addition, the measurement object should pass the SLM system as straight as possible. Because the SLM system measures the shadowing of the measurement object in the transmitted light, if the measurement object is twisted or inclined, the measured projection can cause a measurement error. Furthermore, it is beneficial if the edges of the measurement object are cut at right angles and there are no ridges, cutting waste or chips left over on the front surface. The active measurement light line is only 2 mm high and is located in the middle of the sensor profile, which has a cross-section of 30 x 30 mm. The sensors are called “optical micrometer” or “measuring light scanner” for non-contact discrete part length measurement.
SLM/2 – Measurement Principle (Sideview):
Videos – Length-Section Light Scanner Discrete Part Length Measurement Systems
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