The 580 series of dead-weight testers are genuine primary standards which guarantee fast and reliable pressure calibrations on a daily basis.
The 580 series features:
Pressure ranges to 30 MPa (4,350 psi) for models 580L and 580M
Pressure ranges to 120 MPa (17,400 psi) for models 580DX and 580HX
Pressure ranges to 260 MPa (40,000psi) for model 580EHX
Dual are piston with automatic changeover on 580DX, 580HX and 580EHX