Bently Nevada 21504-00-40-10-02 5 mm and 8 mm Standard Mount Probe

Description

The 21504-00-40-10-02 is an 8 mm standard mount proximity probe belonging to the Bently Nevada 7200 series transducer system. This specific configuration features a 0.0 mm unthreaded length (Option 00), a 4.0 in case length (Option 40), a 1.0 m total cable length (Option 10), and includes a miniature male coaxial connector (Option 02). Engineered for non-contacting displacement measurement, this probe is used in machinery protection applications such as monitoring shaft radial vibration, axial position, and rotor stability on rotating equipment like steam turbines, compressors, and centrifugal pumps. The 7200 series proximity transducer system operates on the eddy current principle to detect static and dynamic distances between the probe tip and the observed conductive target. This system is compatible with 3300 and 9000 series monitoring systems and offers an 80 mil (2.0 mm) linear measuring range with a scale factor of 200 mV/mil (7.87 V/mm). The 8 mm probe construction utilizes polyphenylene sulfide (PPS), a high-performance plastic designed to withstand demanding industrial environments including moisture and chemical exposure.

Features

• 8 mm probe diameter with standard mount configuration
• Option 00: 0.0 mm unthreaded length
• Option 40: 4.0 in case length
• Option 10: 1.0 m total cable length
• Option 02: Miniature male coaxial connector
• Polyphenylene sulfide (PPS) probe tip construction for high chemical and environmental resistance
• Compatible with Bently Nevada 3300 and 9000 Monitoring Systems
• Linear measuring range of 80 mils (2.0 mm)

Applications

• Radial vibration measurement for bearing condition monitoring
• Axial thrust position measurement
• Shaft average radial position for stability analysis
• Vibration amplitude and phase angle for diagnostic plotting (Polar and Bode)
• Eccentricity measurement to detect rotor bow

Ordering Information

Orderable Part Number	21504-00-40-10-02	8 mm Standard Mount Probe
A - Unthreaded Length	00	0.0 mm (Minimum unthreaded length)
B - Case Length	40	4.0 inches
C - Total Cable Length	10	1.0 metre
D - Connector Option	02	Miniature male coaxial connector

Technical Specifications

Manufacturer	Bently Nevada
Part Number	21504-00-40-10-02
Probe Diameter	8 mm
System Type	Standard Mount
Linear Range	80 mils (2.0 mm)
Scale Factor	200 mV/mil (7.87 V/mm)
Frequency Response	0 to 10 kHz (-5% at 10 kHz)
Operating Temperature (Probe)	-30 degC to +177 degC
Housing Material	Polyphenylene sulfide (PPS)

Installation Guidelines

• Ensure the unthreaded length is at least 0.8 inches (20 mm) less than the case length.
• Install the probe to provide adequate clearance for the calibrated measuring range beginning at approximately 10 mils (0.25 mm) from the probe face.
• Ensure the coaxial cable is secured and protected from excessive physical stress or abrasion during installation.
• Compatible with Bently Nevada 7200 series Proximitors; ensure the system length (probe + extension cable) matches the Proximitor requirements.