21504-08-20-10-02: 8 mm Proximity Probe Vibration Transducer
The 21504-08-20-10-02 is the 8 mm Proximity Probe Vibration Transducer covered on this page. The attribute that decides whether it fits the existing installation without modification is 2.0 in.
What separates this variant from its siblings is 8 mm proximity probe vibration transducer. In a machine protection or condition-monitoring installation 8 mm proximity probe vibration transducer is the attribute that decides whether the sensor reaches the target and reads it on the correct gap. A probe or transducer specified to the wrong case length, thread or sensitivity either cannot reach the measured surface or returns vibration values that do not line up with the rest of the train. Confirming 2.0 in against the existing mount is therefore the first check before a replacement, not an afterthought.
Configuration From the Published Data
This unit is documented as a 8 mm Proximity Probe Vibration Transducer. The configuration carried in the order code is: Unthreaded Length: 80 mm; Overall Case Length: 2.0 in; Connector: Miniature male coaxial connector. These are the figures to confirm against the existing mount and monitor before ordering a replacement.
| Feature | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Brand | Bently Nevada |
| Part Number | 21504-08-20-10-02 |
| Tip Diameter | 8 mm |
| Unthreaded Length | 80 mm |
| Overall Case Length | 2.0 in |
| Total Cable Length | 1.0 metre (39 inches) Tolerance: +.25 metre,-.10 metre (+ 10 inches,-4 inches) |
| Connector | Miniature male coaxial connector |
| Power | -17.5 Vde to -26 Vdc at 12 mA maximum consumption |
| Calibrated Range | 80 mils (2.0 mm) |
| Scale Factor | 200 mV/mil (7.87 V/mm), ±4% |
| Frequency Response | 0 to 10 kHz |
| Temperature Sensitivity | Typically -396 change in scale factor at +150°F (+65°C) at 50 mils gap |
| Operating Temperature (Proximitor) | -60°F to +212°F (-51°C to +100°C) |
| Relative Humidity | To 95%, noncondensing |
| System Weight | 1.3 lbs. (0.59 kg). |
Related Configurations
Other published configurations in the same family — confirm the distinguishing specification against your installation:
| Related Part Number | Configuration Difference |
|---|---|
| bently-nevada-21504-08-32-10-02-8-mm-proximity-probe-80-mm-unthreaded-lengt | confirm the configuration against your installation |
Availability & Condition at AutoDCSTech
| Part Number | 21504-08-20-10-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
