os *us, os msTHERMAL MASS FLOW METER 0 ■ 10 bar operating pressure 0 to +50 °c operating temperature Measuring range * Accuracy Turndown ratio Pressure range Measured gas Ambient conditions Transport temperature Response time -TM Power supply Electrical connection Output signal (only one) Casing Classification Interface Non-corrosive gases 18... 30 VDC/120 mA 2xM8,4poles 4... 20 mA and pulse (isolated), R5-485 (Modbus RTU) DESCRIPTION OS 415/418 is based on the thermal mass flow principle. It measures flow and consumption directly at the point of use independent of pressure and temperature. Both versions come standard with Service App to help the user quickly and easily to check the readings or adjust the settings. Samples Channels Sampling rate Range Accuracy * Stated flow values are at standard conditions of P=0.1 MPa(a) and T=20’C with medium air ** Sensors are calibrated in air. On request calibration can be performed in other gases. Data logger Pressure option Wireless (Service App), USB for logger read out 10000000 Up to 3 1 s... 1 h 0... 10 bar 1% F.S. APPLICATIONS • Compressed air systems