Air and nitrogen flow measurement in controlled atmosphere (CA) room
Transporting refrigerated perishable goods such as fruits and vegetables in Controlled Atmosphere (CA) is an economical solution for long distance shipments as well as long-term storage.
The freshness of perishables is preserved by refrigeration and modification of the gas concentrations in CA rooms which provides reduced respiration (C6H12O6 + 6O2 à 6CO2 + 6H2O + Heat) of fruits and vegetables increasing their market life.
Teledyne Hastings’ HFM-200-LFE easily integrates with Nitrogen separating membranes (Pressure-Swing-Adsorption- Membrane) on reefer containers with portholes making the delivery of the exact amount of Nitrogen from ambient air to flush the CA room.
Since fruit respiration is not only controlled by Nitrogen saturation of the CA, it is also important to use CO2 scrubbers with HFM-200-LFE to distribute the right amounts of gas.
The HFM-200-LFE, capable of flows to 15000 SLM (nitrogen equivalent) at low deferential pressure, is a reliable Mass Flow Meter with an accuracy of 1% Full Scale.