This sensor has been manufactured since 2008. We will support it until December 2020.

Model 425.01 is now the low cost replacement when your machine rotation is >500 RPM.
Model 425.51 is now the premium replacement when your machine rotation is >180 RPM

-> 125.01-SRXX  is replaced by 425.01-SRXX
-> 125.01-VRXX  is replaced by 425.51-VRXX  or  425.01-SRXX
-> 125.01-ARXX  is replaced by 425.51-ARXX

• No false trip  thanks to piezo annular shear technology.
• Suit machines with speed as low as 180 RPM.
• Permanent monitoring of the overall vibration to DIN ISO 10816 (New ISO 20816)
• Two-wire technology
• Best reliability thanks to lifetime warranty Hermetic sealing (laser welded)
• Optional temperature output
• Optional Accelerarion raw output (for waveform analysis)
• Large choice of connectors for harsh industrial environment : M12 glass seal - Mil glass seal  & Overbraided Integral cable - Protection conduit

Specifications :

Measuring Range : see variants available. even acceleration RMS is available.
Frequency Range [Hz] :  3  ...  1000 (suit low speed machine)
Sensor Type : Piezo premium annular shear design
Analog current output [mA] :  4    ...  20
Ambient temperature [°C] :  -55°C ...  120°C
Protection :  IP67; IP 68;  IP 69K
Material : AISI316L (DIN 1.4404)
Sealing : Hermetic laser welded >IP69K
Weight : 70 gr (2.5 Oz)
Size : Hex 22mm  Height 50mm

Typical applications : 
continuous trending of overall machine vibration in the rugged environments of industrial machinery monitoring. Direct connection to PLC with 4-20 mA card.

Features-by-features comparison versus competition :
-> Check cross reference TAB

Sensor Strengths :
Model 125.01 offer distinctive configuration for specific market. For example, we can offer a 10mm/s RMS submersible sensor down to 150 metres with overbraided Polyurethane cable ...... 
Model 125.01 is available for OEM specific engraving.
Model 425.51 is available with exactly the same options along with additional full scale values and Atex zone 0 certification.