OVG-4 Calibration Gas Generator

The Owlstone Vapour Generator (OVG-4) is a compact, cost effective calibration gas system, which can generate NIST traceable, precise, repeatable and accurate concentrations of chemicals and calibration gas standards.

Designed for calibration of industrial and scientific gas sensors, the OVG-4 incorporates permeation tube technology and can replace multiple gas cylinders. This results in significant cost and space savings as well as eliminating dangers associated with cylinders. The ability to generate arbitrarily complex gas mixtures makes the OVG-4 calibration gas generator suitable for a broad range of applications from calibration of explosive detectors in military and homeland defence to testing personal monitors in industrial health and safety applications.

	What's wrong with cylinders? Not suitable for many compounds e.g. corrosives, explosives etc Hazards of high concentrations and high pressures Cylinder and regulator costs quickly stack up with multiple analytes
	Benefits of permeation tubes Excellent stability for up to two years of continuous use Traceable to NIST standards Safety - tubes contain only a very small quantity of analyte and operate at low pressure

Gas Calibration with OVG-4™ 

How to calibrate gas sensors with OVG-4

1. Individual permeation tubes are filled with the analyte to calibrate and test instruments, gas analysers and sensors (e.g. FTIR, GC).

Analyte diffuses through the permeation tube

2. The permeation tube is placed in the OVG-4, which generates a traceable gas standard for testing and calibration.

3. That's it. You are now ready to test your sensors/instruments against tracable, precise and repeatable gas standards.

Benefits

• Industrial and scientific vapour generation for all types of gas sensor calibration.
• Cost saving by replacing multiple, costly gas cylinders
• Small quantity of target chemicals reduces risk of dangerous exposure
• Fast and easy sample replacement removes dangers associated with high pressure cylinders
• Accuracy and precision even at very low concentrations with superior long term stability and repeatability
• Portable with compact footprint for significant laboratory space savings
• Reduce setup time and generate blended gas mixtures rapidly
• Adjust concentration from part per billion to part per million levels
• Interface with the Owlstone Humidity Generator (OHG) for realistic environmental testing

V-OVG for advanced calibration gas generation

The Owlstone V-OVG features:

• Larger chamber, allowing multiple, large or specialist permeation tubes
• Improved digital split flow meter
• Optional RS-485 interface for computer control