The 330876-02-10-01-00 is a Bently Nevada proximity probe featuring an extra-large 50 mm sensor tip diameter and metric M14x1.5 housing threads. Fully optimized for a 27.9 mm long linear range, this unit works seamlessly with 3300 XL 50 mm Proximitor Sensors and extension cables to deliver stable and accurate rotor differential expansion telemetry inside heavy-duty steam turbines.
Control&Communication
System Component: 50 mm proximity probe for the 3300 XL Transducer System, used with extension cable and Proximitor Sensor.
Linear Range: Features a maximum linear range of 27.9 mm (1100 mils), the longest in the eddy current transducer line.
Primary Application: Ideal for measuring differential expansion (DE) or rotor expansion (RX) in large steam turbine generators.
Thread Configuration: Probe case type with M14x1.5 thread for secure mounting in turbine monitoring applications.
Cable Specification: Includes 1.0 meter (3.3 feet) High Temperature FluidLoc Cable with armor for rugged environments.
Physical Properties: Weighs 0.2 kg with A380 aluminum Proximitor Sensor material; agency approval option not applicable.
Specific Application
Rotor differential expansion (DE) or axial rotor expansion (RX) monitoring inside large utility steam turbine generators.
Non-contact machine case thermal expansion tracking when the required total measurement path spans up to 27.9 mm (1100 mils).
Dual-sensor redundant configurations observing the same side of a shaft collar or arranged in complementary input layouts on opposite target surfaces.
Ordering Information Summary
|
Ordering Parameter |
Suffix Option Code |
Option Definition & Selections |
Hardware Dimensions & Ratings |
|
Base Model |
330876 |
3300 XL 50 mm Proximity Probe Assembly |
50 mm tip diameter, 27.9 mm linear span |
|
A: Case Type |
02 |
Metric Threaded Straight Exit Casing |
M14x1.5 thread with pre-drilled locknut |
|
B: Total Length |
10 |
1.0 meter (3.3 feet) Integral Lead |
Resistance: 6.4 ± 0.5 Ω (Center to Coaxial) |
|
C: Armor Option |
01 |
High Temp FluidLoc Cable with Armor |
Flexible stainless steel with PFA outer jacket |
|
D: Agency Approval |
00 |
No Regulatory Agency Approvals |
Standard commercial packaging structure |
FAQ
Q1: What is the primary application of this 50 mm probe?
A1: It is designed for measuring differential expansion (DE) or rotor expansion (RX) in large steam turbine generators where long linear range is required.
Q2: What is the linear range of this transducer system?
A2: It features a maximum linear range of 27.9 mm (1100 mils), the longest linear range in the eddy current transducer line.
Q3: What thread type and cable length does this specific model have?
A3: This model features M14x1.5 thread with a 1.0 meter (3.3 feet) total length
Q4: What type of cable is included with this probe?
A4: It includes a High Temperature FluidLoc Cable with Armor for rugged environmental protection.
Q5: What are two typical mounting arrangements using this probe?
A5: Two transducers observing the same side of a collar, or complementary transducers observing opposite sides of a collar to effectively double the measurable range.
Spares
| 02120015 | Bulk field wire. 1.0 mm2 (18 AWG), 3 conductor, twisted, shielded cable with drain wire. Specify length in feet. |
| 02173009 | Bulk field wire. 1.0 mm2 (18 AWG), 3 conductor, twisted, shielded cable. Specify length in feet. |
| 138492-01 | Replacement panel-mount mounting pad |
| 138493-01 | Replacement DIN-mount mounting pad |
| 04310310 | 3300 XL Proximitor Sensor Panelmount Screws. Package includes four 6-32 UNC thread forming mounting screws (Supplied standard with 3300 XL Proximitor Housings [3300 XL option]). |
| 03200006 | Silicone self-fusing tape. A 9.1 meter (10 yard) roll of silicone tape to protect connectors. It is easy to install and provides excellent electrical isolation and protection from the environment. It is not recommended for use inside the casing of the machine. |
| 40180-02 | Connector Protectors. Package contains 10 pairs of connector protectors. |
| 03839410 | Male Connector Protector. Placed on the extension cable to connect to the female connector protector on the probe and provide environmental protection of connectors. |
| 03839420 | Female Connector Protector. Placed on the probe lead to connect to the male connector protector on the extension cable and provide environmental protection of connectors. Also placed on the extension cable to slide over the Proximitor Sensor connection and protect it from the environment. |
| 330153-10 | 3300 XL 50 mm Connector Kit. Used on 3300 XL 50 mm probes and extension cables. Contains one male (removable nut) and female ClickLoc connectors, color-coded sleeves and two pieces slit PFA tubing. |
| 163356 | Connector Crimp Tool Kit. Includes one set of multiconnector inserts and connector installation instructions. Supplied with carrying case. |
| 173873 | High Temperature Cable ZipTies. PEEKcable tie is rated for use up to 200 C continuous temperature. Available in bags of 50 zip ties. |
| 174804-01 | Side Exit Probe Adapter Kit. Used to adapt side exit probes for the 330187 Extended Range Verification Kit. |
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