The Owlstone Humidity Generator (OHG-4) is a versatile humidity generator that is used to produce a range of relative humidity concentrations from 1 to 90%RH (±1%).
Designed to be mounted in the Gen-Sys rack, the OHG-4 can be used in conjunction with your OVG-4 or V-OVG to generate a wide range of vapor standards, suitable for calibration of sensors, especially gas sensors.
OHG-4's Technical Specifications
Humidity, upper limit
Humidity, lower limit
1% RH depending on inlet gas
Wet gas outlet flow range
300–3000 ml/min (different flow ranges available upon request)
1/4” Swagelok quick connect
1/8” Swagelok compression
Dimensions (OHG only)
145w x 240d x 260h mm
Dimensions (GEN-SYS rack inc. OHG)
620w x 530d x 360h mm
15–25 kg depending on configuration
Integrating Your OHG-4 with Calibration Gas Generators and Flow Controllers
Owlstone’s modular Gen-Sys system easily allows you to add the OFC-1 Flow Controller and the OVG-4 or the V-OVG Calibration Generator to your system setup.
The Owlstone Calibration Gas 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.
The Vertical Owlstone Vapor Generator (V-OVG) builds on Owlstone's proven OVG technology.