Service:Air and compatible gases.Accuracy:(Includes linearity, hysteresis, and repeatability): per order code. ±0.20% full scale ±1 digit. ±0.10% full scale ±1 digit. ±0.05% full scale ±1 digit.Wetted Materials:18/8 stainless steel.Temperature Limits:23 to 122°F (-5 to 50°C).Storage Temperature:-4 to 140°F (-20 to 60°C).Humidity:30 to 95% rH, non-condensing.Display:2 line, 16 character, dot matrix LCD, with switchable display sizes.Power Requirements:9 V alkaline battery, installed functional, user replaceable. Can operate from external power supply of 7 to 14 VDC.Current Consumption:<9 mA.Memory:964 measured values. Recording intervals adjustable from manual, 1, 5, 10, 20, 30 s, 1, 2, 3, 5, 10, 30, 60 m.Case Protection:IP54 (NEMA 3).Case Dimensions:6″ x 3.27″ x 1.34″ in (152 x 83 x 34 mm).Weight:9.5 oz (270 g).Pressure Connection:Hose; 4/6 mm or 1/8″ NPT.Maximum Measurement Rates:Stand alone: 2-1/2 readings/sec (0.1% and 0.05% ratings), 5 readings/sec (0.2% rating). Output to RS-232: 20 measurements/sec (0.2% rating). 10 measurements/sec (0.1% and 0.05% ratings).RS-232 Baud Rate:Adjustable, 1200, 2400, 4800, or 9600 baud.Agency Approvals:CE.