TUF-2000M DN15-100 DN50-700mm DN80-6000 DN300-6000 Digital Ultrasonic Flowmeter Flow Meter Module Sensor Indicator Counter     Main Features:     1.High accuracy     Linearity: better than 0.5%, Repeatability: better than 0.2%, Accuracy: better than 1%           2.Wide measuring range     Several types transducer for selection, pipe size from DN15mm to DN6000mm           3.Far transmission distance     Connecting module and secondary meter through RS-485 interface, transmission distance up to 1000m           4.Powerful Functions     Current output: 4-20mA, one channel, can be used for flow/heat transmitter;     OCT output: two channels, can be used for flow /heat switch;     Current input: 4-20mA, three channels, can be used for data collector;     Tri-wire resistance signal input (PT100): two channels, can be used for calorimeter.           5.Wide Application     Its unique features, particularly low cost, small size, high performance, local display, make it the ideal choice for industrial automation, processing control, flow meter networking, composing multi-channel, high accuracy flow meter.           Specification:              TUF2000M Technical Specifications               Accuracy         ≤1%               Velocity range         0~±10m/s,    Bi-directional measurement               Pipe size         DN15~DN6000mm(optional)    When DN15~20mm,the measurement    accuracy will be reduced.               Temperature         -30~90℃ / -30~160℃               Type of liquid         Single liquid can transmit ultrasound,    such as water, sea water, sewage, oil,    alcohol, etc.               Pipe material         Steel, stainless steel, cast iron, copper,    PVC, aluminum, glass steel, etc.    Liner is allowed.               Signal output         1 way 4-20mA output  1 way OCT pulse output       1 way Relay output               Signal input         3 way 4-20mA input,    achieve to heat measurement by    connecting PT100 platinum resistor.