Operating instructions

Charged Aerosol Detectors
Corona Veo and Corona Veo RS
Operating Instructions Page 25
Gas Supply Requirements
Important: To prevent damage to the detector, do not exceed the maximum gas
pressure of 550 kPa (80 psig) for the gas supply.
Important: Ne pas dépasser une pression de gaz maximaux de 550 kPa (80 psig)
pour l'approvisionnement en gaz.
• If you work with combustible solvents, use nitrogen gas. Higher purity nitrogen is not
required but recommended and should be dry (not containing water vapor). Medical-
grade nitrogen from an in-house liquid nitrogen source is sufficient. However, filter the
supplied gases through a submicron particle filter before they enter the detector. Not
using a well-filtered operating gas supply may increase the baseline noise.
• Observe the following notes:
♦ The inlet gas must be clean and free from micro particles (size ≤ 0,1 µm).
♦ The inlet gas supply pressure must be between 480 – 550 kPa (70 – 80 psig).
♦ The gas consumption of the detector is approximately 4 L/min.
• Pressure variations in which the gas supply drops below 480 kPa (70 psig) may result in
loss of performance. Monitor the gas supply pressure during the installation.