Measures distances with millimeter accuracy. Precisely defines positions. Registers movements. The cost effective answer to precise measurement and movement detection.
The LDM 41/42 is an opto-electronic distance sensor for industrial applications. With distance and position measurement to nearly any kind of natural surface possible, and without the use of special reflectors.
The sensor works based on comparative phase shift measurement. It emits modulated Laser light, which is diffusely reflected back from the target with a certain shift in phase to be compared with a reference signal. From the amount of phase shift, a required distance can then be determined with millimetre accuracy. A visible red Laser beam enables easier sighting.
The LDM 42 is designed for fast measurement on white target.
Main characteristics of LDM41 and LDM42
Millimetre precise measurement to various surfaces
Long range reflector-less distance measurement, with additional reflectors mounted onto target distances over 100m are possible. (LDM 42 only for white surface)
High availability under in the high temperature area with high precision
Supply voltage range - 10 V to 30 V DC
Low risk, laser class II used
Simple alignment with a visible laser beam
Bi-directional data-interface, switching and analogue output
Simple set-up for parameter with a PC or laptop
Measured values are displayed in meters, decimetre, centimetre, feet, inch etc. due to free scaling
Stable and simple to installing housing with protection IP 65
Profibus DP via UNIGATE Gateway Applications LDM41/LDM42
- Measurement of distance
- Position measurement
- Diameter measurement of rolls / coils
- Fill level measurement
- Position control
- Security application
- Observing and measurement for elevators
- Position measurement for cranes and conveyors
- Position monitoring of moving objects
- Monitoring of hoisting equipment / lift measuring
Measuring system:
The LDM41/42 provides an opto-electronic distance-measuring module for industrial applications.
Non-contact measurement by the principle of comparative phase shift measurement.
Concentrated justification of the sensor by visible measuring beam.
High measuring rate of 50 Hz (LDM42 only). RS232 or RS422, data interface.
Programmable digital switching output.
Programmable analog output from 4mA to 20mA.
External trigger input.
Features:
Laser class II for safe operation.
Non-reflector measurement.
Measures randomly selectable surface with millimeter accuracy.
Allows field bus integration (external).
Dust and waterproof protection (IP 65).
Low consumption device.
Compact design.
Wide applications, defined by user specific parameters.
Options:
LDM41 - Order above with selected interface option
Add Pre-made Sensor cable from list below
Measuring time 0.16 up to 6s on natural surfaces,distances up to 30m or 0.1s (10Hz) on white target. Available in the following interface configurations:
LDM41.1, with interface RS232
LDM41.2, with interface RS422
incl. manual, switching output, analogue output, supply voltage 10-30VDC,
LDM42 - Click here for LDM42 Option
Measuring time 20ms (50Hz) on white targets, for distances more than 100m possible
Available in the following interface configurations:
LDM42.1, with interface RS232
LDM42.2, with interface RS422
incl. manual, switching output, analogue output, supply voltage 10-30VDC,
Sensor cables - Click below on reference number to add required cable to your order..
LDMSC2 - 2Mtr cable one side open
LDMSC5 - 5Mtr cable one side open
LDMSC10 - 10Mtr cable one side open
Profibus Gateway - Unigate with IP 65 enclosure also available (details on request)
Click here for user manual
Click here for the LDM41/42 Specification sheet
Specification
| Measuring range *1 - 0.1m up to 30 m on natural surfaces, more than 100 m achievable, depending on target reflectance |
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Measuring accuracy *2 ±3 mm (+15 °C up to +30 °C), ± 5 mm (-10 °C up to +50 °C) |
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Resolution 0.1 mm, user scalable |
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Reproducibility <0.5 mm |
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Measuring time 0.16 up to 6s programmable or auto in Mode DT0.1s in Mode DW on white surface 20ms in Mode DX on white surface (only LDM42A) |
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Laser Class II under DIN EN 60825-1:2001-11 |
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Wavelength 650nm visible red |
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Laser divergence 0.6 mrad |
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Operating temperature -10°C up to +50°C |
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Storage temperature -40°C up to +70°C |
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Supply voltage 10 V … 30 V DC |
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Power consumption approx. 1.5 W |
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Connection 12Pin connector (Binder series423) |
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Data Interface RS 232/RS 422; 2400, 4800, 9600, 19200, 38400 Baud, ASCII, format 8N1; programmable mode, scaling, measure time; output of measure values, internal temperature and error codes Digital switching output "high-side switch", programmable switching threshold and hysteresis, max. load of 0.5 A |
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Operating mode Distance tracking, single measurement, external triggering |
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Analog output 4mA to 20mA current output; programmable distance range limits, load resistance <500 Ohm |
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Enclosure Aluminium |
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Dimensions Approx. 212 x 96 x 50 (L x W x H) in mm |
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Weight approx. 850 g |
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Protection IP 65 |
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Shock stability 10 g / 6 ms (DIN ISO 9022-3-31-01-1) |
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Mounting 100 x 85 in mm, 4 x M6 holes |
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Supplied c/w user manual/CD |
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*1 Dependent on target reflectance, straylight influences and atmospheric conditions |
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*2 Statistical spread 95 % |
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