LDM301-302 Laser Distance Sensor

The new LDM 301 Laser distance sensor measures distance and speed of natural targets without a reflector, but a reflector can be used for increasing the measuring range. The sensor needs only a very short time to measure; it facilitates distance measurement to or from moving objects. The laser pulse’s time-of-flight measurement principle which it uses is specifically suitable where great distances have to be measured and for applications in harsh industrial environments.

With the compact design shape, simple setup and configured with standard interfacing facilities, the LDM 301 can easily be installed. For interfacing an analogue output, 2 digital outputs and a serial interface RS232 or RS422 are available. Standard LDM 301 includes integral heating, a status display and a red Laser pointer. A modular setup allows for easy complementation with accessories or special models as may be required in particular applications.

Operating Principle:

Pulsed time-of-flight

Features:

• Broad working range
• Great reach, also without reflectors
• Very short times to measure
• Laser class 1
• Programmable serial, digital and analogue outputs
• Allows synchronization with external devices
• Compact design shape, IP67 protection
• Integrated red Pilot Laser, optionally telescope sign for alignment
• Easy to install and operate

Options and Accessories

• Alignment aid RED DOT
• Mounting bracket
• Digital display for analog signals
• Connection box
• Profibus- and SSI interface (LDM301P resp. LDM301S)
• Protective housing (PHSS30x, below)

Application:

• Process monitoring in steel works and rolling mills
• Fill-level measurement
• Positioning of cranes, loading and handling equipment
• Measurement of points that cannot be accessed, for example, inside of cavities, tubes or containers
• Position monitoring of vehicles or ships

Specification:

• Measuring range *1 0.5 m … 300 m for natural surfaces *2, with target board 3 km possible
• Measuring accuracy ±20 mm (at 2 kHz measuring rate and at 100 Hz output rate)
• Resolution 1 mm
• Measuring time 0.5 ms, Option 0.1 ms
• Measurment range velocity 0 m/s … 100 m/s (Time to measure 0.1 s … 0.5 s) *3
• Measuring Laser *4 905 nm (infrared), Laser Class 1, EN 60825-1:2003-10
• Pilot Laser 650 nm (visible red), Laser Class 2, 1 mW (on, off, blinking)
• Operating temperature -40 °C up to +60 °C
• Storage temperature -40 °C up to +70 °C Supply voltage 10 up to 30 V direct voltage
• Power consumption < 5 W (operation without heating)
• 11.5 W (operation with heating at 24 V)
• Serial interface *5 RS232 or RS422, Transfer rate 1.2 kBaud … 460.8 kBaud, ASCII, 8N1; programming with Windows terminal program (e.g. LDMTool or HyperTerminal) programmable automatic start of measurement after switching on
• Digital switching output 2x “high-side switch”, max. load capacity 0,2 A, permanent short-circuit-proof, adjustable windowing functionality
• Analog output programmable distance range limits, 4 mA up to 20 mA
• Dimensions (LxWxH):
  • 136 mm x 57 mm x 104 mm
  • Weight approx. 800 g
• Protection class IP 67
• Shock resistance 10 g / 6 ms persistence shock DIN ISO 9022-3-31-01-1
• MTTF 100,000 hours at 25 °C
• Scope of delivery Sensor with prefabricated cable 2 m, connector 1x 12-pole (BINDER series 723) M18; printed user manual; CD with test version of LDMTool and documentation
• Options Cable with varied length 2m, 5m 10m, connecting box, Profibus gateway, alignment telescope RED DOT, protection equipment