Service:Air and compatible gases.Wetted Materials:18/8 stainless steel.Accuracy:(Includes linearity, hysteresis, and repeatability): Depending on model. ±0.20% full-scale ±1 digit; ±0.10% full-scale ±1 digit; ±0.05% full-scale ±1 digit.Temperature Limits:32 to 122°F (0 to 50°C).Storage Temperature:-4 to 140°F (-20 to 60°C).Humidity:Maximum 95% RH non-condensing.Display:Graphical back lit LCD. 128 x 64 points.Power Requirements:(3) 1.5 V AA alkaline batteries, installed functional, user replaceable. Can operate on 6 to 9 VDC external power.Current Consumption:25 mA without back lit display, IR, or buzzer.Memory:10,742 readings. Recording intervals adjustable from 1 second to 24 hours or manual.Case Protection:IP54 (NEMA 3).Weight:10.5 oz (300 g).Process Connections:Hose 4/6 mm or 1/8″ NPT.Agency Approvals:CE.