Model 4910

ACE Instruments

Model 4910,4920 FSG(foil strain gage type) earth pressurecells consist of 0230mm two circular stainless steel plateswelded together their periphery and spaced apart by anarrow cavity filled with de-aired ethylene glycol.Each end of cell in model 4910&4920 is connected withpressure sensor, of the two round boards, thin side isactuating side, and it should be directly contacted with soilor measured member.

The pressure sensor converts theelectrical signal delivered in actuating side.Inside of cell of model 4930&4940, foil strain gage isdirectly attached in wheatstone bridge type, when theactuating side receive the earth pressure, the interior circuitalso launch the electric signal in proportion to the earthpressure by distortion.When the cell get weight, foil strain gage perceive thedeformation of cell, and resistance factor changes sl ightly,this output is transmitted to output device and displayed inmechanical unit. According to the correct record, you cancalculate in unit of pressure.

Description

Correct record is provided by sensors, and sensors areoperated automatically, within water pressure chamber, it isindividually inspected, so confidence is guaranteed.FSG earth pressure cells is designed into waterproof andinsulated structure so that it gets stable output for a longterm period and can overcome severe environment inconstruction site.

Features

The material that minimize datum change and temperature factor
High precision and reliability
Stability and reliability in extreme environment
Easy to use and installation
Possible to dynamic measurement

Applications

FSG earth pressure cells is used for inspect of designhypothesis or excess pressure of structure. Specially, it is useful for the real time measurement whereconsolidation feature of filling or experimental constructionwith a view of study need dynamic measurement.

Collection data to determine the distribution of,orientation of and magnitude of total stresses
Measurement of the contact pressure on banking andfoundations
Measurement of total pressure on the structures duringheave
Checking of density of fills in dams