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LM200 Long range laser level transmitter
Brand: ABB GroupThe measuring laser uses invisible, infrared light. There is a second, visible aiming laser to help with the alignment of the measuring laser. The laser beams have very little divergence so that accurate targeting is easy even in silos or vessels that have internal structures.
Features- Maintenance free, non-contact continuous level sensor
- Range up to 190 m (623 ft) for level applications
- Range up to 400 m (1312 ft) for positioning applications
- Easy and intuitive setup
- No calibration required
- Continuous level monitoring for granular solid materials and opaque liquids
- Measures solids and opaque liquids at any angle
- Last Pulse Detection for Measurement with Light and Moderate Dust
- Built-in laser pointer for accurate alignment in narrow or tall vessels
- Auto-ranging to measure all levels
- Available non condensing heated optics prevent condensation issues
- No Beam Divergence = No False Echoes
- Rugged and Robust Aluminum Enclosure
- CSA, ATEX and IECEx potentially explosive atmosphere ratings
Specifications
Brand
Range
- 0.5 m (1.5 ft) to 40 m (131 ft) - dark colored surfaces
- 0.5 m (1.5 ft) to 190 m (623 ft) - light colored surfaces
- 0.5 m (1.5 ft) to 400 m (1300 ft) - reflective targets in positioning applications
Resolution
- ±10 mm (0.4 in)
Accuracy
- ±30 mm (1.2 in)
Update Rate
- 3 readings per second (maximum), 1 reading per minute (minimum)
Operating Temperature
- –40°C to +60°C (–40°F to +140°F)
- Note: While the initial (cold start) accuracy of the LM200 will be within specifications, a settling period of approximately 15 minutes is recommended to allow the electronics to warm up and the internal temperature to stabilize.
Survival Temperature
- –40°C to +80°C (–40°F to +176°F)
Pressure
- Atmospheric
Analog
- 4-20 mA, NAMUR compliant non-isolated and self powered
Digital (Relay)
- 2 SPST relays: 1 A at 120 VAC, 0.5 A at 250 VAC, 1 A at 60 VDC
Communication
- Standard male DB9 connector - RS232 for testing, troubleshooting and configuration19200 baud, 8 data bits, 1 stop bit, no parity, no flow control
Voltage
- 24 V DC typical (18 to 32 V DC)
Current
- 0.55 A peak, 0.35 A continuous with non-condensing optics
- 0.4 A peak ( less than 100 ms), 0.2 A continuous
Base Plate Diameter
- 127mm (5 in)
Length
- 303 mm (12 in)
Weight
- Aluminum enclosure - 3.86 kg (8.5 lbs)
Enclosure Material
- Powder coated aluminum standard
O-Ring Seal Material
- Buna-N (Nitrile Rubber)
Mounting / Process Connection
- Flange - 4 holes to allow bolting on a flange or bracket with 4 M6 screws.
Total Optical Aperture
- 100 mm (4 in)
Measuring Laser Lens Diameter
- 50 mm (1.97 in)
Receiver Lens Diameter
- 50 mm (1.97 in)
Lens Material
- Glass
Lens Impact Resistance
- Impact tested at 4 joule
Beam Divergence
- Δ < 0.2°
Measuring Laser
- 905 nm near infrared pulsed semiconductor laser
- 12 mW average power output
Pointing Laser
- 635 nm red semiconductor laser
- 3 mW continuous
Measuring Laser Life Expectancy
- 25 years typical MTBF
Measuring Laser Safety
- Always on IEC60825-1 class 1M laser
- A class 1M laser is safe for all conditions of use except when passed through magnifying optics. This means the maximum permissible exposure cannot be exceeded when viewing the laser with the naked eye without the aid of magnifying optics.
Beam Direction
- 90° ± 1° from mounting flange
Pointing Laser Safety
- Intermittent IEC80825-1 class 3R laser
- Laser comes on at power up for 2 minutes, it can be turned back on for commissioning using the LCD2 communications and configuration device.
- A class 3R laser is considered safe if handled carefully, with restricted beam viewing. With a class 3R laser the maximum permissible exposure can be exceeded when viewing the laser with the naked eye, but with a low risk of injury.
Purge Air Flow
- Must be oil free dry airrecommended flow between 0.5 and 4 l/minute maximum pressure 5.5 bar (80 psi)
Purge Fitting
- 1/8 NPT (to be connected on the dust tubes)
Enclosure Rating
- IP66/Nema 4X (Dust proof, can be washed down with high pressure hose)
Gas Rating
- This equipment can be used in flammable gases or vapor hazardous locations.
