3M™ Versaflo™ TR-302E+ drive unit with rotameter

3M Versaflo TR-300+ forced air flow system is available as: TR-302E+ drive unit (includes filter cover, airflow indicator and spark shields). TR-315UK+/TR-315E+ starter kit including: TR-302E+ drive unit, particulate filter, standard belt, extra-capacity battery, charger, self-adjusting length breathing hose, airflow indicator and spark shields. 3M Versaflo TR-300+ positive airflow drive unit worn on a belt. When combined with one of 3M's approved headgear, it provides a forced-air respiratory protection system that protects against particles (and offensive odors). The 3M Versaflo TR-300+ forced air flow drive unit can be used with the following 3M headgear: S-Series, M-Series, HT-622/HT-629/HT-639 and HT-707/HT-748/HT-749. Two flow rates for user selection. Controlled airflow maintained at a constant nominal level even when the battery is discharged or the filter fills with particles. Display shows battery charge status, selected airflow rate and filter fill level during use. An audible alarm and LED light indicate low battery charge and low airflow rate. Lithium-ion battery with charge level indicator. Three belt options (standard, easy-to-clean coating and leather) for a wide range of applications. Can be used under a sanitizing spray (IP 53). Three filter options available: for particulates only for particulates and nuisance levels of organic vapors* for particulates and nuisance levels of acid gases* and offering protection against hydrogen fluoride at levels 10-times the maximum permissible concentration (MPC) * nuisance level refers to concentrations below the permissible concentration Protection class TH2 NWO=50 Protection class TH3 NWO=500 Minimum air flow 170 l/min Standard air flow 185 l/min +/- 10 l/min Increased air flow 205 l/min +/- 10 l/min Battery operating time - standard flow standard 4,5-6 hrs. increased flow 4.5-5 hrs Battery operating time - increased capacity flow standard 9-12 hrs increased flow 9-10 hrs Battery charging time - standard battery less than 3 hrs Battery charging time - increased capacity less than 3.5 hrs Storage conditions -30°C to + 50°C