Specifications
Measuring Range : see variants available.
Frequency Range velocity [Hz] : 3 ... 1000 (suit speed machine as low as 180 RPM)
Frequency Range acceleration [Hz] : 3 ... 10 000
Sensor Type : improved microelectromechanical system (MEMs)
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 425.51-VR25-3 (25 mm/s RMS with M12 connector) is kept on stock.
Model 425.51 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 425.51 is available for OEM specific engraving.
Model 425.51-Y1 is available with exactly the same options along with additional full scale values and Atex zone 0 certification.
Legals: Country of Origin : France HS Code : 9031 80 80
204.01 - Adhesive Pad
191.01 - Mounting Stud
False Trip ? What is happening ?
The vibration velocity seems below the full scale range of the sensor unfortunately the sensor output is saturating ..... MEMs based sensors have limited dynamic acceleration. When these limits are exceeded they have nonlinear output that lead to false trip. Piezoelectic sensors are by nature linear and almost not limited in acceleration range. For example some customers exhibit false trip when they encounter pump cavitations, sticking bearings, bearing lubricant failure, ... . Recommendations : Use our premium MEMs based (model 425.51) vibration transmitter with 100 g dynamic. Use our premium Piezo based (model 125.01) vibration transmitter with 2000 g dynamic.For standard application; we recommend our M12 epoxy seal connector. M12 or Mil glass seal connector is recommended for lifetime hermetic sealing warranty. It is also interesting when harmful gas are present in the process. For underwater application we recommend our IP68/IP69K integral polyurethane cable which has been successfully tested down to 150 meters. For best chemical resistance, we recommend our IP68/IP69K integral FEP cable. For really harsh environment our IP68/IP69K teflon FEP cable with stainless steel overbraid is the perfect solution.
