The testo Hydronic Heating System Smart Probe Set contains three instruments designed for use on a hydronic heating system to determine gas flow and static pressure, measure temperature of radiators with an IR probe, and to measure pressure leak-down tests in piping systems. Key Features: Measures manifold gas pressure, pressure drop, air flow, (with optional pitot tube), pipe and radiator temperatures Perform timed pressure leak-down tests on pipe systems Measures temperature of pipes in heating and cooling systems with accurate and stable NTC temperature sensor Photograph objects with smart device, capturing measurement marker and temperature values for reference and reporting (805i) Overview The instruments can be used simultaneously and read through your smart device using the testo Smart Probes App. The kit comes with a handy case at a great value.The testo Smart Probes App is a powerful and easy-to-use tool. It allows you to remotely read measurements from up to six (6) Smart Probes and easily document/report the results. Automatic calculations make it a snap!All measurement data is displayed as instrument readings, tables, or graphs. The measurements can be quickly saved as PDF or Excel files. The App creates custom reports which can be saved and/or shared by email. All your data can be stored and retrieved saving you hours of timeconsuming paperwork! What's included: testo Smart Probes – hydronic heating set for pressure and temperature measurement on heating systems. Consists of: testo 115i, testo 510i incl. hose set (Ø 0.15 in and 0.2 in) with adapter, testo 805i, testo Smart Case (heating), batteries, and certificate of calibration Temperature - NTC Technical data Measuring range -40° to 302 °F / -40 to +150 °C Accuracy ±2.3 °F (-4° to 185 °F) / ±1.3 °C (-20 to +85 °C) Resolution 0.1 °F / 0.1 °C Temperature - Infrared Technical data Measuring range -22° to 482 °F / -30 to +250 °C Accuracy 34.7 °F or ±1.5 % of remaining measurement value (32° to 482 °F) / ±1.5 °C or ±1.5 % of mv (0 to +250 °C)±36 °F (-4° to 31.8 °F) / ±2 °C (-20 to -0.1 °C)±36.5 °F (-22° to -4.2 °F) / ±2.5 °C (-30 to -20.1 °C) Resolution 0.1 °F / 0.1 °C Emissivity 0.10 to 1.00 Measurement spot marking Diffractive optics (laser circle) Distance to measurment spot 10,1 Differential pressure (internal sensor) - Piezoresistive Technical data Measuring range -60 to +60 InH₂O / -150 to +150 hPa Accuracy ±0.02 InH₂O (0 to +0 InH₂O) / ±0.05 hPa (0 to +1 hPa)±(0.1 InH₂O + 1.5 % of remaining measurement value) (+0 to +60 InH₂O) / ±(0.2 hPa + 1.5 % of mv) (+1 to +150 hPa) Resolution 0.00 InH₂O / 0.01 hPa General technical data Technical data System requirements requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0 Warranty 2 years Battery type 3 AAA micro batteries Battery life 250 h (testo 115i); 150 h (testo 510i); 30 h (testo 805i) Storage temperature -4° to 140 °F / -20 to +60 °C Dimensions 7 x 4 x 1 in. (testo 115i) / 183 x 90 x 30 mm (testo 115i)6 x 1 x 1 in. (testo 510i) / 148 x 36 x 23 mm (testo 510i)6 x 1 x 1 in. (testo 805i) / 140 x 36 x 25 mm (testo 805i) Operating temperature -4° to 122 °F (testo 115i + testo 510i) / -20 to +50 °C (testo 115i + testo 510i)14° to 122 °F (testo 805i) / -10 to +50 °C (testo 805i)