Duvas Technologies



  • Fast, accurate readings available on a real time basis
  • No calibration and short warm up time subject to external factors max: 5-10 minutes
  • Quick service with few consumable parts


  • Measurement of multiple gases on a real time constant measure basis
  • Ability to adjust averaging time to improve accuracy even further
  • No cross sensitivity between measured gases


  • Serial, ethernet and Bluetooth enabled for auto data upload to remote monitoring
  • GPS - for real time gas analysis & mapping - allowing remote, off site access and data analysis and mapping
  • Ability to ‘triangulate’ data with other variables such as meteorological data.


  • Mobile (vehicle mounted) or portable with 4 hour battery life.
  • Fixed site units can be installed for roadside or fence line use
  • Smaller – Lighter variant under development
  • Low Operating Costs
  • No need for repeat calibration

We have developed a new approach for multi-species gas analysis in fixed and mobile form producing rapid, dynamic readouts coupled with the geographic mapping of gas concentrations in real-time. Our units are capable of measuring a large range of gases 'visible' in the UV spectrum using ultraviolet spectroscopy. Our core technology and proprietary software algorithms are supported by international patents. We use a UV lamp to shine light into a gas cell. This beam of light is reflected via a series of mirrors and then collected by a UV spectrometer. Our proprietary software and algorithms then analyse the readings that the spectrometer has collected, typically in 1 second for BTEX gases.

There are no expensive chemicals or coolants to add, no need to wait while the unit analyses the data and, critically, once calibrated, the unit will not need repeat calibration.

Maintenance is minimal, with the main items being replacing the light bulbs every 2000-4000 hours, filters and replacing the batteries every 600+ recharges. We also recommend replacing the mirrors every 1-2 years (depending on environment and use) to maintain the sensitivity. All models in the DV3000 series are designed to enable such regular maintenance to be quick and easy to perform.

The DV3000 is currently optimised for the following species:
benzene toluene ethylbenzene
m-xylene o-xylene p-xylene
nitric oxide nitrogen dioxide sulphur dioxide
styrene formaldehyde 1,3-butadiene
A large number of other species can be detected by ultraviolet spectroscopy, although most are only found in specialist industrial processes. Please contact us if you need to measure any of the following, and we will advise you on the expected ppb levels our technology can measure down to, and the cost of the specialist calibration required.
Acetaldehyde Ammonia Formic acid
1,2,3-dicholorobenzene Acetonitrile Furfural
1,2,4,5-tetrafluorobenzene Acetylene Isoprene
1,2,4,5-tetramethylbenzene Acrolein Ketene
1,2,4-trichlorobenzene Acrylonitrile Naphthalene
1,2,4-trifluorobenzene     Nitrobenzene
1,2,4-trimethylbenzene Carbon Disulfide    
1,3,5-trichlorobenzene Chlorine Dioxide (ClO2)   Phenol
1,3,5-trifluorobenzene Cyanogen   Phenyl fluoride
1,3,5-trimethylbenzene Diflourocarbene   Phenylacetone
m, n, o-bromotoluene Propyne    
m, n, o-chlorotoluene      
m, o, p-difluorobenzene      
m, p-bromochlorobenzene      



Measurement Principle Ultraviolet Absorption Spectroscopy
Measurement Range (Min ppb)
2ppb (benzene, nitric oxide, sulfur dioxide, styrene); 5ppb (ethylbenzene, toluene, xylenes, ozone);
15ppb (nitrogen dioxide, formaldehyde); others on request
Measurement Range (Max ppb) All species max 500ppb
UV Light Source Deuterium Lamp
Performance Simultaneous Analysis of Multiple Gases in ppb level concentrations
Detection Resolution 0.1ppb
Linearity ±1% full scale
Max zero drift (24 hour) ±1ppb
Max span drift (24 hour) ±1% full scale
Response Time (90% full scale) (min) < 5 sec (depending on gas species)
Warm-up Time for stable detection subject to external factors max: 5-10 minutes
USB Memory stick logging
Ambient Temperature Range 10°C to 40°C non condensing
Storage temperature -40°C to 60°C non condensing
Lamp life time >2000 hours
Humidity (non condensing) 80%
IP rating IP65 on request
Instrument Weight (kg) Less Than 18 Kg Without Battery
Instrument Dimension (L*W*H) 840 x 290 x 280mm




Unit 15, Boundary Business Centre
Boundary Way
Woking GU21 5DH

United Kingdom

Tel +44 (0) 1483 751217

Registered in England & Wales (Company No. 6466811)

Middle East & Asia

P.O. Box 414037

United Arab Emirates

Telephone: +971 50 6458519

Follow us on linkedIn: