Bently Nevada 170133-050-00 Internal 3300 Proximitor Module The Bently Nevada 170133-050-00, also cataloged as the 170133 Internal Proximitor Module, operates...
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The Bently Nevada 170133-050-00, also cataloged as the 170133 Internal Proximitor Module, operates as a dedicated signal conditioning hardware component for processing raw eddy-current probe inputs within the 1701 FieldMonitor machinery protection system.
Suffix Breakdown & Model Matrix
Suffix Group
Value
Definition
Base Model
170133
Internal 3300 Proximitor Module
System Length
-050
Calibrated for 5.0-meter total system length (probe + extension cable)
Option
-00
Standard configuration / Standard scale factor
Hardware Specifications
Parameter
Specification
Model
170133-050-00
Brand
Bently Nevada
Series
3300 Proximitor
Channels
Dual-channel (supports 2 proximity probes)
Compatible Probes
Standard 3300 series 5 mm and 8 mm proximity probes
System Length
5.0 meters
Scale Factor
200 mV/mil (7.87 mV/um)
Linear Range
250 um to 2250 um (10 mils to 90 mils)
DC Output Range
-1 VDC to -17 VDC
Frequency Response
0 Hz to 12.5 kHz (750,000 cpm), -3 dB
Input Supply Voltage
-24 VDC (via 1701 FieldMonitor terminal base)
Standard Target Material
AISI 4140 steel
Minimum Target Size
15.2 mm (0.6 inch) diameter flat surface
Minimum Shaft Diameter
50.8 mm (2.0 inches)
Recommended Shaft Diameter
>= 76.2 mm (3.0 inches)
Operating Temperature
-34 deg C to +85 deg C
Storage Temperature
-40 deg C to +85 deg C
Relative Humidity
Up to 100% condensing, non-submerged
Weight
320 g (0.71 lb)
Connector Type
Miniature Coaxial (Click-Loc compatible, gold-plated or stainless steel)
Installation Location
Internal slot of Bently Nevada 1701 FieldMonitor chassis
Eddy-Current Probe Scaling and Gap Voltage Validation
The 170133 module conditions eddy-current probe signals using a nominal scale factor of 200 mV/mil. At installation, the gap voltage should be set to target approximately -10 VDC for standard 8 mm probes with a 50 mil standoff, ensuring the operating point sits within the linear calibration window. The module's dual-channel architecture provides independent signal paths to suppress inter-channel cross-talk, maintaining measurement integrity for simultaneous radial displacement and axial position monitoring on rotating machinery.
Frequently Asked Questions
Q: Can the 170133 module be hot-swapped in the field?
A: No. The module must be installed or removed with the 1701 FieldMonitor chassis de-energized. The -24 VDC supply is delivered through the terminal base backplane, and live insertion may cause transient voltage spikes on adjacent channels.
Q: What is the effect of using a probe and extension cable combination that exceeds the 5.0-meter system length?
A: The -050 suffix calibration is valid only for a total system length of 5.0 meters. Using longer cable runs will shift the linear range and scale factor, resulting in measurement error. A different suffix variant calibrated for the actual system length must be selected.
Q: Does the module require external power conditioning?
A: No. The module draws nominal -24 VDC directly from the 1701 FieldMonitor terminal base. No external power supply or conditioning equipment is required.
Field Installation Guidelines
Probe Mounting: Install proximity probes with the probe tip perpendicular to the target surface. Ensure the target area meets the minimum 15.2 mm diameter flat surface requirement. For shaft diameters below 76.2 mm, verify probe clearance to avoid mechanical interference.
Cable Routing: Route coaxial probe cables away from power conductors and variable frequency drive (VFD) output cables to minimize electromagnetic interference. Maintain separation of at least 150 mm from high-current carrying conductors.
Connector Engagement: Use only Click-Loc compatible gold-plated or stainless steel connectors. Ensure the coaxial connector is fully seated and the locking mechanism is engaged. Improper seating will cause signal instability and gap voltage drift.
Gap Voltage Verification: After installation, measure the DC gap voltage at the module terminals before applying runout compensation. The voltage should fall within the -1 VDC to -17 VDC range. A reading outside this range indicates incorrect probe-to-target distance or target material incompatibility.
Grounding: The 1701 FieldMonitor chassis must be properly grounded per the installation manual. The coaxial cable shield should be connected to the module ground reference through the terminal base. Do not create additional ground paths at the probe end.
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