# Measuring the pressure

I need to determine the pressure existing in a liquid in order to calibrate a pressure transducer. Does anyone know which instrument we can use to detect a pressure of a slowly flowing liquid? For example, imagine I am applying a pressure to a liquid through the piston of a syringe and I need to determine the pressure existing inside the barrel of the syringe (in the liquid). I should be able to detect pressure ranging from 2-30 mmHg. If anyone got any clue, please share your knowledge. Just the name of the instrument/instruments enough for me to dig out information.

• Did you google "pressure meter"? – DilithiumMatrix Apr 11 '17 at 23:34

A simple method for calibrating the transducer is to immerse it in a known depth $h$ mm of water. The gauge pressure is then $h/13.56$ mmHg. 13.56 is the relative density of mercury compared with water.