Product Overview
When machinery failure threatens production uptime, the Bently Nevada 330191-00-70-10-05 3300 XL 8 mm ETR Proximity Probe delivers robust, reliable vibration monitoring. This probe is engineered with patented TipLoc and CableLoc technologies to prevent common failure modes such as cable pull-out and probe tip detachment. The 330191-00-70-10-05 features a 3/8-24 UNF thread without armor, a minimum unthreaded length of 0.0 in., and an overall case length of 7 inches.
As part of the 3300 XL series, this probe uses a thicker molded PPS plastic tip that withstands physical abuse, while the larger diameter body provides a stronger case. The 330191-00-70-10-05 is designed for one-meter systems and does not require an extension cable.
Technical Specifications
The following key parameters define the performance of the Bently Nevada 330191-00-70-10-05:
-
Power Supply: Requires -17.5 Vdc to -26 Vdc with nonincendive circuit (per drawing 140979) at 12 mA maximum consumption. With barriers, -23 Vdc to -26 Vdc. Operation above -23.5 Vdc may reduce linear range.
-
Supply Sensitivity: Less than 2 mV change in output voltage per volt change in input voltage.
-
Output Resistance: 50 Ω.
-
Nominal Probe DC Resistance (RPROBE): 7.59 ± 0.50 Ω for 1.0 meter probe length.
-
Probe Tip Material: Polyphenylene sulfide (PPS).
-
Probe Case Material: AISI 303 or 304 stainless steel.
-
Standard Cable: 75Ω triaxial, FEP insulated probe cable.
-
Connector Material: Gold-plated brass or gold-plated beryllium copper.
-
Maximum Connector Torque: 0.565 N·m (5 in·lbf).
-
Probe Case Thread: 3/8-24 UNF with maximum 0.563 in thread engagement.
-
Agency Approvals: CSA, ATEX, IECEx (option 05).
Industry Applications
The 330191-00-70-10-05 is ideal for critical rotating machinery monitoring, including steam turbines, compressors, and centrifugal pumps. Its improved CableLoc design provides 330 N (75 lbf) pull strength, preventing cable damage during installation and operation. The optional FluidLoc cable option stops oil leaks from the machine through the cable, addressing a common failure mode in bearing housings. This probe is recommended for environments where physical abuse or liquid ingress is a concern.
Installation & Setup Guidance
Proper installation is essential for reliable measurements. Ensure the probe tip is seated flush with the target surface using the Viton® O-ring to seal differential pressure. Tighten the connector to a maximum of 0.565 N·m (5 in·lbf) to avoid damaging gold-plated contacts. The 3/8-24 UNF thread allows up to 0.563 in engagement. Use the supplied installation drawing (140979) for nonincendive circuit connections. For one-meter systems, no extension cable is required.
Maintenance & Reliability
The 330191-00-70-10-05 offers extended temperature range options: standard probes operate from -55°C to +232°C (T1 classification). The robust PPS tip and stainless steel case resist harsh conditions. Inspect the cable for cuts or abrasions regularly; the FEP jacket provides chemical resistance. Probes are not pressure tested before shipment, so verify the seal after installation. The patented TipLoc molding reduces the risk of tip separation over time, contributing to long service life and lower maintenance costs.
Selection Guide & Purchasing Advice
When ordering the Bently Nevada 330191-00-70-10-05, verify the total length option: '10' corresponds to 1.0 meter (3.3 feet) total probe length. The agency approval option '05' includes CSA, ATEX, and IECEx certifications. This probe is available in new, original factory packaging with a 12-month warranty from PLC Source PRO. Ensure compatibility with your Bently Nevada monitor (BN Prox) and extension cables for entity parameter compliance. For specialized applications, consider the optional armored cable or FluidLoc option (ordered separately).
PLC Source PRO offers genuine Bently Nevada modules with fast delivery and dedicated support.