Additional environmental control is required to maintain the analyser within its specified operating range of +10C to +35C throughout flight. The environmental control system comprises a lightweight emclosure and thermostat controlled heaters and ventialition fans. In bench tests the system has demonstrated success in maintaining the system at operating temperatures at ambient temperatures between approximately -10C and +30C. Note that outside of its specified range the analsyer will harmlessly shut down or refuse to boot. This article was published on 2024-06-25