Tenma ST-8920 Pressure and Flow Meter

Features: - Larger LCD display with backlight. - Relative time clock on MAX, MIN and AVG provides a time reference for measurement. - Pressure, velocity or air flow measurement provides Zero Adjust. - Display pressure, Air velocity or air flow plus environment Temperature simultaneously. - Easy to calculate the area of a rectangular or circular duct. - USB interface, USB to UART Bridge Controller. - Low battery indication, and Auto Power Off mode (Sleep mode) increases Product Overview: Pressure and flow meter Over range, under range and low battery indicator Zero adjust and offset Data hold and max/min/avg functions Min/max/ avg functions 10psi maximum pressure 12-month limited warranty (view Terms & Conditions for details) Specifications: Accuracy ±0.3% FSO (25°C) Repeatability ±0.2% (Max. ±0.5% FSO) Linearity/Hysteresis ±0.29% FSO Pressure Range ±5000Pa Maximum Pressure 10psi Response Time 0.5 Seconds typical Low Battery Indicator Yes Over Range Indicator OL Under Range Indicator -OL Operating Conditions 0 to 50°C Storage Conditions -10 to 60°C / 14 to 140°F Zero Adjust and Offset Yes Data Hold Yes Max / Min / AVG Yes