Product Feature Dwyer flow meter Internal conversion factors for up to 32 gases. Automatic zero adjustment. Self diagnostic tests. Product Specification/Models Dwyer flow meter Relay Rating 1 amp 24 VDC. Max Particulate Size 5 microns. Temperature Limits Ambient: 32 to 122° F (0 to 50° C); Dry Gases: 14 to 122° F (-10 to 50° C). Power Supply 12 VDC; ± 15 VDC; 24 VDC. Application Dwyer flow meter Relay Rating 1 amp 24 VDC. Max Particulate Size 5 microns. Temperature Limits Ambient: 32 to 122° F (0 to 50° C); Dry Gases: 14 to 122° F (-10 to 50° C). Power Supply 12 VDC; ± 15 VDC; 24 VDC. Other Information Dwyer flow meter Leak Integrity 1 x 10-9 smL/sec of helium. Display 128 x 64 graphic LCD with backlight.