Open Path Measurement for the GasFinder3-DC

WHAT THE OPX HEAD DOES WITH THE GASFINDER3-DC

  • The OPX Head is a measurement head for our series of GasFinder3-DC analyzers that provides a path integrated concentration (ppm-m) in the active measurement path (ambient atmosphere)
  • Primary uses of the OPX Head with the GasFinder3-DC are:
    • Continuously monitor gas concentrations over open area sources
    • Provide an Immediate and unambiguous detection of gas releases in the ambient atmosphere

 

HOW THE OPX HEAD WORKS

  • The analyzer (GasFinder3-DC) can be mounted locally or remotely
  • Fibre optic cable carries the laser light from the analyzer (GasFinder3-DC) to the remotely mounted OPX Probe’s Transceiver Head
  • The active measurement path is formed by the laser passing through the ambient atmosphere and being returned by the heated retroreflector
  • The returning laser light is then collected on the photodiode and the signal is carried back to the analyzer via CAT6 cable
  • The ppm concentration is then transferred from the analyzer to the PLC or DCS

 HOW THE GASFINDER3-DC WORKS

  • This system has the ability to monitor two heads and/or probes (channels) with one analyzer.
  • Measurement Head/Probe Options: OPX Head (Open-Path Head) and RPM Probe (Remote Point Measurement Probe)
  • Boreal’s OP-TDL technology counts every target gas molecule in the measurement path to give a path integrated ppm-m concentration or path average ppm concentration
  • Boreal Laser has a patented internal reference cell that does not require routine intervention or zero/span gas to eliminate drift as this is done automatically and once a minute
  • This analyzer utilizes a mono-static configuration with the analyzer being a transceiver and having a passive retro-reflector returning the laser light
  • Measure only the target gas and all of the target gas. Boreal analyzers do not suffer from cross interference and are not confused by other gases present or are affected by humidity

GasFinder3 TECHNOLOGY

  • All new digital & software based platform
  • Intuitive user display that shows all relevant information at a glance
  • Analyzer can easily be updated through USB
  • Practically no temperature related reading drift over an ambient range of -40C to +50C
  • Better sensitivity and lower minimum detectable limit (MDL) Significantly increased dynamic range
  • Reliable and stable operation in light levels down to 5% of ideal conditions
  • Available real-time inputs for Pressure and Temperature compensation

BENEFITS

  • Cannot be poisoned or mechanically over ranged
  • No interference with other gases
  • No memory effects
  • Data collection and interpretation is simple and intuitive
  • Built for ambient winter and summer conditions
  • Minimal maintenance and intervention
  • Sophisticated self-diagnostics and data validation
  • Can provide an independent sample or reading every second
  • Free and unlimited phone and email support

EASE OF INSTALLATION

  • All-in-one field mounted analyzer
  • The rugged industrial enclosure can be mounted on a fixed pedestal or wall
  • Only power and communication cables required

RPX SPECIFICATIONS

OPERATIONAL SPECS

  • Measurement Principle: Tunable Diode Laser Absorption Spectroscopy with Wavelength Modulated Spectroscopy
  • Path Length: 0.5 m (1.64 ft) *Custom Path Length Available
  • Ambient Temperature: -45ºC – 85ºC (-49ºF – 185ºF)
  • Ambient Humidity: operating; non-condensing 5-95% RH
  • Opacity: can withstand 95% beam block

SIGNAL CONNECTOR SPECS

  • Optical Connector: FC/APC Female (Signal-In)
  • CAT6 Connector: CAT6 Female (Signal-Out)
  • Maximum Cable Length: 50m (retro heater)
  • Power Supply: None Needed

PHYSICAL SPECS

  • Dimensions: 753.2 x 147 x 109 mm (29.6 x 5.8 x 4.3 in)
  • Weight: 5.9 kg (13 lbs)
  • Protection: IP66/NEMA 4x
  • Material: Anodized Aluminium
  • Window: Borosilicate, fused silica, or sapphire
  • Hazard Area Classification: Class 1 Zone 1 A,B,C,D
  • CSA Enclosure: Type 3R

GasFinder3-DC Specifications

  • Dynamic Range: 5 orders of magnitude
  • Response Time: (Scan Rate) 1 second per path
  • Sensitivity: specification vary depending on gas and application
  • Accuracy: 2% of reading
  • Uncertainty: 5% of accuracy
  • Path Length: 0.5m to 750m
  • Light Source: Semiconductor Diode Laser w/ ~10mW output
  • Eye Safety: Class I approved
  • Data I/O Interface Options: RS-232, 4-20mA and dry-contact relays
  • Hazardous Area Classification: CSA North American Class 1, Div 2, Groups A,B,C,D
  • Weight: 14.6 kg (32.2 lbs)
  • Dimensions: (LxWxH): 495 x 368 x 160mm (19.5 x 14.5 x 6.25in)
  • Power Requirement: 120-240 VAC
  • Ambient Temperature: -40°C to +50°C (-40°F to 122°F)
  • Ingress Protection: IP 66 & NEMA 4x

Retro-Reflectors

  • Boreal Laser utilizes a mono-static configuration with the analyzer being a transceiver and having a passive retro-reflector returning the laser light
  • The distance between the transceiver and the retro-reflector forms the physical path length and active measurement path
  • Reflected light returns in the same direction as the incident light and the beam is reflected 180 degrees
  • A retro is like a section through a corner and has three faces that form the inside corner of a cube
  • If the location is outside and in a humid climate, a rain hood and some heating in the enclosure may be necessary to prevent condensation on the window
  • The retros can tolerate small vibrations and movement so the retro mounting does not need to be as robust as the mounting for the analyzer

 

RESPONSE CELL

  • To validate that the GasFinder3-DC is responding appropriately to the target gasa response cell can be inserted into the active measurement path
  • While the GasFinder3-DC is designed to report any instrument or measurement errors, this response test mitigates the small remaining risk of an instrument in an unreported error condition
  • The response cell is NOT a field calibration
  • Depending on how the response cell is held in the active measurement path the path length can change and therefore so will the indicated reading and one cannot expect identical readings from the response cell every time it is put into the path

Remote Monitoring + Control Centre

  • The remote monitoring + control centre is utilized to power, log data, and allow remote communication (read & write) to provide on-board intelligence for applicable components:
    • Interface software for the GasFinder (GasViewMP)
    • Weather data (3D sonic anemometer + met station)
    • Interface software for Tilt-Pan Scanner (GasViewMP)
    • Relays (can be used to remotely cycle the power)
    • Webcam (useful tool for verifying weather conditions)
    • Measurement campaigns can now be monitored remotely without having to physically visit the installation
    • Depending on the accessories the operator can remotely intervene with the installation if necessary

AVAILABLE GASES

Listed are the commonly procured gases

Gas specifications can change from application to application. Once we know how you plan to use the analyzer we can optimally configure the system to meet your needs.

Tell us about your application: info@boreal-laser.com
  • Methane (CH4)

    Methane (CH4) poses a risk to personnel safety not only because the gas is highly combustible but is also an asphyxiant that can displace oxygen in enclosed areas. Measuring ambient levels of methane are an important component of quantifying greenhouse gas emissions. Conventional gas detection techniques lead to slow response times, short-life spans, cross inference and false alarms. Boreal’s line of products requires minimal maintenance, cannot be poisoned/fouled/inhibited, and has a low cost of ownership. Boreal is your solution for precision and accuracy for CH4 monitoring.

    Please contact a Boreal representative to determine the optimal gas specifications for your application. Listed below are the typical configurations:

    CH4

  • Carbon Dioxide (CO2)

    Carbon Dioxide (CO2) is a colourless and odorless gas that is naturally occurring in our atmosphere. CO2 is heavier than air, can displace oxygen, and is soluble in water. Carbon Dioxide is an essential greenhouse gas that is closely monitored due to its links to global warming and ocean acidification. Conventional gas detection techniques lead to slow response times, short-life spans, cross interference and false alarms. Boreal’s line of products requires minimal maintenance, cannot be poisoned/fouled/inhibited, and has low cost of ownership. Boreal is your solution for precision and accuracy for CO2 monitoring.

    Please contact a Boreal representative to determine the optimal gas specifications for your application. Listed below are the typical configurations:

    CO2

  • Hydrogen Fluoride (HF)

    Hydrogen Fluoride (HF) is a highly dangerous colorless gas or liquid. Upon contact with tissue, hydrogen fluoride is highly corrosive and toxic which exposures can lead to severe or fatal consequences. In a gaseous state, HF is lighter than air. Conventional gas detection techniques lead to slow response times, short-life spans, cross interference and false alarms. Boreal’s line of products requires minimal maintenance, cannot be poisoned/fouled/inhibited, and has a low cost of ownership. Boreal is your solution for precision and accuracy for HF monitoring.

    Please contact a Boreal representative to determine the optimal gas specifications for your application. Listed below are the typical configurations:

    HF

  • Hydrogen Sulfide (H2S)

    Hydrogen Sulfide (H2S) is a colourless, toxic, corrosive, flammable, and explosive gas. At very low concentrations H2S can be identified by its foul odor resembling rotten eggs. Hydrogen sulfide is heavier than air and can collect in low lying areas. With H2S being so detrimental to personnel safety it is imperative that your gas detection system identifies the gas as quickly as possible. Conventional gas detection techniques lead to slow response time, short-life spans, cross interference and false alarms. Boreal’s line of products requires minimal maintenance, cannot be poisoned/fouled/inhibited, and has low cost of ownership. Boreal’s your solution for precision and accuracy for H2S monitoring.

    Please contact a Boreal representative to determine the optimal gas specifications for your application. Listed below are the typical configurations:

    H2S

  • Ammonia (NH3)

    Ammonia (NH3) is a caustic, hazardous, and colourless gas that has a distinct and pungent identifying smell. Ammonia has a boiling point of -33C, is lighter than air, combustible, and is soluble in water. In addition to monitoring ammonia for personal safety there are strong environmental drivers to measure and quantify ambient ammonia concentrations. Conventional gas detection techniques lead to slow response time, short-life spans, cross interference and false alarms. Boreal’s line of products requires minimal maintenance, cannot be poisoned/fouled/inhibited, and has low cost of ownership. Boreal’s your solution for precision and accuracy for NH3 monitoring.

    Please contact a Boreal representative to determine the optimal gas specifications for your application. Listed below are the typical configurations:

    NH3

  • Hydrogen Chloride (HCl)

    Hydrogen Chloride (HCl) is a colourless and corrosive gas which produces hydrochloric acid upon contact with humidity in the air or on skin contact. Conventional gas detection techniques lead to slow response times, short-life spans, cross interference and false alarms. Boreal’s line of products requires minimal maintenance, cannot be poisoned/fouled/inhibited, and has a low cost of ownership. Boreal is your solution for precision and accuracy for HF monitoring.

    Please contact a Boreal representative to determine the optimal gas specifications for your application. Listed below are the typical configurations:

    HCl

  • Hydrogen Cyanide (HCN)

    Hydrogen Cyanide (HCN), also known as formonitrile, is a colorless and extremely poisonous, and explosive gas that is lighter than air and boils around room temperature. The extreme toxicity of hydrogen cyanide is detrimental to human health and needs a gas system that detects HCN the second it is present. Hydrogen cyanide is highly toxic because it inhibits cellular oxidative processes. Conventional gas detection techniques lead to slow response time, short-life spans, cross interference and false alarms. Boreal’s line of products requires minimal maintenance, cannot be poisoned/fouled/inhibited, and has low cost of ownership. Boreal’s your solution for precision and accuracy for HCN monitoring.

    Please contact a Boreal representative to determine the optimal gas specifications for your application. Listed below are the typical configurations:

    HCN

  • Carbon Monoxide (CO)

    Carbon Monoxide (CO) is a deadly colorless, odorless, and tasteless gas. CO is slightly heavier than air and is toxic over specific concentrations. Carbon Monoxide is a useful industrial gas which is widely used as a fuel and a reducing agent. Conventional gas detection techniques lead to slow response times, short-life spans, cross-interference and false alarms. Boreal’s line of products requires minimal maintenance, cannot be poisoned/fouled/inhibited, and has a low cost of ownership. Boreal is your solution for precision and accuracy for CO monitoring.

    Please contact a Boreal representative to determine the optimal gas specifications for your application. Listed below are the typical configurations:

    CO

  • Acetylene (C2H2)

    Acetylene (C2H2), in its purest form is colourless and odorless. Acetylene is slightly heavier than air, has an auto ignition temperature of 3,300C (6,000F). Conventional gas detection techniques lead to slow response times, short-life spans, cross-interference and false alarms. Boreal’s line of products requires minimal maintenance, cannot be poisoned/fouled/inhibited, and has a low cost of ownership. Boreal is your solution for precision and accuracy for C2H2 monitoring.

    Please contact a Boreal representative to determine the optimal gas specifications for your application. Listed below are the typical configurations:

    C2H2