growerdick:
It is commonly used for liquid and they describe silicone lubricants to prevent water from contacting the sensor element.A flexible tube is used to connect with the nipple on the device.
Well if you say so. I worked in a oil refinery for decades and specified and worked on many types of pressure sensors and one thing in common to all pressure sensors rated for liquid service was the 'raw' sensor had a metal diaphragm that separated the sensing element from the liquid media to be sensed. The space between the active sensor element and the metal barrier was 'liquid packed' with some inert liquid material (silicon was common) that was compatible with the sensor element. Also proper external placement of the sensor relative to the liquid in the vessel or container being measured and remote sensing leads (your flexible tube) has to be 'liquid packed' as any mixture of air (gas) and the liquid would corrupt the reading as liquid is not compressible and will accurately 'transmit' the pressure but gas is compressable and will screw up the pressure the sensor 'sees' Vs the actual vessel or container pressure. So be sure of your application and that any liquid coming into contact with the sensor element is compatible with the sensor element material. As stated the manufactures datasheet states it's rated for dry air service only, so proceed at your own risk.
Lefty