Item Name: Portable Digital Gas Flow Meter Tester Gas Mass Nitrogen Oxygen Flow MeterOur min digital gas flow meter tester has high sensitivity and can start metering for the very small initial flowMF5706 (0-20L/min) / MF5708 (0-100L/min) / MF5712 (0-250L/min) Gas Mass Flow Meters are suitable for instantaneous flow testing and flow accumulation calculations for different gases such as air, compressed air, oxygen, nitrogen, CO² and other inert gases, etcFeatures: Ultra-low power consumption via battery or optional external AC adapter - Portable design, small size and easy installation - MEMS technology for small gas flow testing with high accuracy. - RS485 Modbus protocol available for networking - User programmable range alarms for safety and other monitoring/control functions1. Product Features◆Sensing chip using thermal mass flow measurement, no temperature and pressure compensation, to ensure the flowmeter's high accuracy measurement◆High sensitivity, can be very small start flow can start metering◆In a single chip to achieve the integration of multiple sensors, so that the range ratio of 80:1 or even higher◆High stability, high accuracy and excellent repeatability at the full rangeSupport the measurement of multiple gases, allowing customers to calibrate some special gases on siteFast response timeFlexible output mode, LCD display, RS485 communication interface can also be provided to query the output data by the host computer◆ The parameters can be configured by keypadOver-range alarm indication functionPortable design, battery power supply and external power supply can be switched at willG thread or NPT thread connection, easy to install and use, other interfaces can also be customized according to customer requirementsWide range of applications: electromechanical industry. Food industry. Tobacco industry. Analytical instrument industry. Chemical industry. Beverage industry. Glass industry. Scientific research institutions. Pharmaceutical industry. Agriculture, forestry and fishery