TEREN Economical Differential Pressure Transmitter, Wall Mount, DPTL320, 1% Accuracy, 5 Units Selectable, 4 to 20mA, Low Range 1.0, 2.0, 4.0 "WC & 250, 500, 1000 Pa

 Apply high accuracy MEMS sensor and digital technologies, can measure positive, negative or differential pressure  It can measure fan and blower pressures, filter resistance, air velocity, pressure drop across orifice plates, differential pressure of medical or pharmaceutical machine, etc.  Multiple ranges, engineering units and outputs.  Good performance with accuracy of 1.0%  Function keys: zero calibrate, unit select, response time set, etc