LEO 2 is a compact, micro-processor (μP) controlled, highly accurate and versatile pressure measuring instrument with digital indication. The piezoresistive pressure transducer as the heart of the instrument has gone through extensive pressure- and temperature tests. Its characteristics are stored in the instruments internal EEPROM. The μP of the LEO 2 reads the characteristic values and calculates there from the pressure to an accuracy of 0,1 % over the temperature range of 0…50 °C. The pressure is measured twice per second and displayed. The top display indicates the actual pressure, the bottom display shows the MAX.- or MIN- pressure since the last RESET. LEO 2 has two operating keys. The left key is to turn the instrument on, to select the functions and the pressure units. The right key executes the selected function or unit. The right key is also used to switch between the MAX.- and MIN.-value. The instrument has the following functions: RESET: With the RESET-function, the MAX.- and MIN.-value is set to the actual pressure value. ZERO: Any value can be set as a new Zero reference. The instruments are calibrated in a sealed gauge mode with the ambient pressure (≈ 1 bar) as a Zero reference. The ZERO allows to compensate for the variation of the barometric pressure or to transfer LEO 2 in an absolute measuring mode by applying a vacuum and executing the zero. CONT: The instrument turns off 15 Min. after the last key function. Activating CONT (Continuous) deactivates this automatic turn-off. UNITS: All standard instruments are calibrated in bar. The pressure can be indicated in the the following units: bar, mbar / hPa, PSI, kPa, MPa. LEO 2 has 7/16” UNF male thread and is delivered complete with an O-ring seal swivel fitting which allows LEO 2 to be rotated through 360°. Only minimal tightness is needed to seal up to 300 bar. Process pressure connection is G 1/4” male. | 
Test & Calibration 
