Product details

Origin:USA

Brand:bently

Product ID:330750-20

product description 

High TemperatureVelomitor System

Description

The 330750 and 330752 High Temperature Velomitor Systemsensor head and integral cable are 

designed for hightemperature environments. This enables you to mount thesensing head on surfaces 

with temperatures up to +400°C(+752°F).

To accomplish this, the transducer design segregates thesensing element from the signal conditioning 

electronics. Thetwo are permanently connected using an integrated cable.The integrated cable 

eliminates connectors which are asignificant source of transducer failures.

The cable enables you to position the signal conditioningelectronics in a cooler location. The internal 

electronicswithstands temperatures of 55°C to +121°C (-67°F to +250°F).The integrated design 

makes it possible to capturemachinery performance data comparable to other BentlyNevada Velomitor 

transducers, but at significantly highertemperatures.

For lower temperature environments, use the standard330500 Velomitor Piezo-velocity Sensor. You can 

install it inlocations with a maximum operating temperature of +121°C(+250°F).

In addition, be careful to install theaccelerometer transducer on the bearinghousing or machine casing. 

Improperinstallation may decrease the transduceramplitude and frequency response and/orgenerate false 

signals that do not representactual vibration. Refer to the appropriateinstruction manuals and Application Notes.

Upon request, Bently Nevada providesengineering services that can identify theappropriate machine housing 

measurementsand installation assistance if needed.

Electrical

Sensitivity

5.7 mV/mm/s (145 mV/in/s)±5%

Frequency Response

15 to 2000 Hz (900 to 120,000cpm) ± 3.0 dB;20 to 1000 Hz (1,200 to 60,000cpm) ± 0.9 dB

Transient Temperature Sensitivity

0.0762 mm/s/°C (0.003in/s/°C), typical, as defined inISO 5347-18:1993(E)

Amplitude Range

635 mm/s (25 in/s) peakbelow 680 Hz.2940 m/s2 (300 g) peakabove 680 Hz.Vibration at frequenciesabove 

2 kHz decreases thisrange.

Transverse Sensitivity

Less than 5% of Sensitivity