FlexSight - Model LS2000 -Infrared Line-Of-Sight Gas Detector

Easy to Install

• Industry-Leading Field-of-View
• +/-0.8 degree FOV creates more tolerant alignment process (+/- 2m tolerance at 120m range)
• Simple alignment adjustment
• New mounting method
• Significantly reduced average install time
• 66% reduction
• Scope-only alignment
• No handheld required!

Easy to Maintain

• Industry-Leading Misalignment Tolerance
• Less susceptible to vibration and installation movement
• Long-Lasting Lamp performance and lifetime
• 10-year warranty on IR source
• Smart Monitoring and Control
• Temperature and obscuration triggers
• Power consumption management
• Field Replaceable Electronics Module
• Reduced labor and equipment costs
• Easy to upgrade
• Easy-to-Access Diagnostics
• Highly Visible LEDs: local alarm and simple fault identification
• Large event and calibration logs (1,000 and 100)
• HART® 7, EDD, and AMS
• Optional communication link: enables single point diagnostics, dynamic lamp power, LED synchronization
• Simple 3-wire connection between Rx and Tx

Best Protection

• Improved optical field of view - 60% improvement over existing technology - provides wider target and stronger signal strength
• Advanced housing design with simplified mount provides breakthrough alignment tolerance, even in applications impacted by wind, rain, fog, snow, sleet, intermittent obstructions, unstable mounting post, and train-induced vibrations
• Certified to distance of 120 meters and in temperature range of -55ºC to +75ºC
• Warranty of 5 years for unit and 10 years for IR lamp source

The Model LS2000 is a line of sight infrared gas detection system that provides continuous monitoring of combustible hydrocarbon gas concentrations in the range of 0 to 5 LFL-meters, over a distance of 5 to 120 meters. Standard system outputs include an electrically isolated/ non-isolated 4-20 mA dc current output, with HART communication and RS-485 MODBUS communication. Alarm and fault relays are available as an option.

The system consists of two stainless steel modules — a transmitter and a receiver, along with mounting fixture hardware. Both modules are powered from an external 24 volt DC supply. The receiver provides the measurement signal outputs, and is furnished with onboard “status indication” LEDs and an internal magnetic calibration switch. The transmitter houses a high quality xenon flash lamp.

The LS2000 is certified explosion-proof for use in Class I, Division 1 and Division 2 hazardous areas, and holds third party performance certification for methane gas detection. Propane and butane detection are also available (Det-Tronics verified). It can be used as a stand-alone detector, or as part of a larger facility protection system using other Det-Tronics equipment.

By connecting the transmitter and receiver via a three-wire shielded cable, an optional “communication link” can be created between the two devices to enable: single point system diagnostics, dynamic lamp power optimization, synchronized LEDs, transmitter configuration via connection to the receiver, and calibration initiation from either device.

• ± 0.8 degree misalignment tolerance (~±56cm @ 40m; ~±168cm @ 120m)
• IR source: High performance, long lasting xenon flashlamp - 10 year warranty on IR source
• Large detection coverage area (detection range 5-120 meters)
• Maximum distances and proper operation verified with 95% signal obscuration
• Compliance to FM6325 and ISA-12.13.04 performance standards
• Certified SIL 2 capable
• Third party performance certified and factory calibrated to Methane
• Propane and Butane detection performance Det-Tronics verified
• Microprocessor controlled heated optics for increased resistance to moisture and ice.
• Standard 4-20 mA output (configurable), HART communication, RS-485 Modbus
• Optional alarm relays (Ex d only)
• Mounting hardware and alignment brackets included
• Mounts to pole (4.5” nominal OD) or flat surface
• Built-in locking adjusters deliver fine control of alignment angles
• Telescope is the only tool needed for optimal alignment
• Multi-color LEDs are provided on both modules for detailed visual indication of operating status.
• Non-intrusive zero calibration options: on-board magnetic switch, MODBUS communication, HART communication, or external switch
• Optional 475 field communicator unit for communication, diagnostic, and set up from point to point
• Modular design for ease of maintenance

Operating Voltage (Both Modules): 24 Vdc nominal. Operating range is 18 to 30 Vdc. Ripple cannot exceed 0.5 volts P-P.
Transmitter Lamp: Xenon flashlamp, field-replaceable module.
Warmup Time: 15 seconds minimum, 150 seconds maximum from power-up, depending upon alignment accuracy.
Current Output: Linear 0-20 mA (isolated/non-isolated) rated at 600 ohms maximum loop resistance @ 24 Vdc operating voltage. Levels below 4 mA indicate a fault condition. Fault output levels are user configurable.
Relay Outputs (Optional): Available on Ex d approved models only. Two alarm, one fault relay. Form C Type (NO/NC). Contact Rating: 3 amperes at 30 VDC.
Alarm Relay Setpoint Range: Low Alarm: 0.5 to 4.5 LFL-meters (default = 1) High Alarm: 0.5 to 4.5 LFL-meters (default = 3).
Visual Status Indicator: Multi-color LED on each module indicates operating status.
Available Gases: Third party performance approved to methane. Det-Tronics verified propane and butane settings available.
Detection Range: Short Range: 5-60 meters. Long Range: 30-120 meters.
Misalignment Tolerance: ±0.8 degree minimum (~±56cm @ 40m; ~±168cm @ 120m).
Calibration: LS2000 systems are span calibrated for methane, propane, or butane at the factory. Span calibration in the field is not required. Zero calibration can be accomplished in the field using the on-board magnetic reed switch.
Response Time: T90: 2 seconds (5.0 LFL-meters applied).
Accuracy/Linearity: ±5% of full scale gas concentration or ±10% of applied gas concentration, whichever is greater.
Repeatability: ±5%.
Temperature Range: Operating: –55°C to +75°C (–67°F to +167°F) Storage: –55°C to +85°C (–67°F to +185°F).
Humidity: 5 to 99% relative humidity; designed for outdoor applications.
Fog Performance: FM 6325 performance req. 4.18
Vibration: FM6325 and DNV Standard for Cert No. 2.4, Type B (DNV testing includes operation of alignment mounts during 4G vibration).
Measurement Range: 0-5 LFL-meters.
Interference Resistance: Immune to sun and flare radiation, tested to 800 ±50 W/m2 at = 3° to optical axis and common contaminants.
Self-Diagnostic Test: Fail-Safe operation ensured by performing all critical tests once per second.
Module Housing Material: 316 stainless steel (CF8M).
Conduit Entry Options: 3/4 inch NPT or 25mm, with two entries for transmitter and four entries for receiver.
Optics Protection: Microprocessor controlled heated optics mitigate against ice and dew formation.
Ingress Protection: IP66/67; NEMA Type 4X
Tropicalization / PC BD Protection: Conformal coated printed circuit boards: CTI Rating of 600V, maximum allowed by standard. Third party tested per ASTM-D-3638-07.
Wiring: Field wiring screw terminals are UL/CSA rated for up to 14 AWG shielded wire, and are DIN/VDE rated for 2.5 mm2 wire.
Shipping Weight: Transmitter and receiver with mounting hardware: 85 pounds (38 kg).
Warranty: 5 year limited warranty from date of manufacture. 10 year warranty on IR source.
Certification: FM & CS A