330877-080-36-00 Bently Nevada 50 mm Extension Cable

Description:

The 3300 XL 50 mm Transducer System consists of a separate 50 mm probe, an extension cable, and a 3300 XL 50 mm Proximitor* Sensor. The large diameter coil gives this system a maximum linear range of 27.9 mm (1100 mils), the longest linear range of our eddy current transducer line. This linear range makes the 3300 XL 50mm Transducer System ideal for measuring the differential expansion (DE) or rotor expansion (RX) of large steam turbine generators that results from the difference in growth rates between the turbine rotor and the machine stator (casing).

Measuring Differential Expansion
The Differential Expansion measurement is made by using two proximity transducers that observe a collar or ramp some distance from the thrust bearing. Typical transducer mounting arrangements that require the 3300 XL 50 mm Transducer’s long linear range include:

• Two transducers observing the same side of a collar.
• Two complementary input transducers observing opposite sides of a collar, effectively doubling the measurable DE range.

The criteria for selecting a mounting method are the size of the available target, the expected amount of rotor axial movement, and the type of DE target that exists in the machine. If the collar height is sufficient and the required total measurement range is less than 27.9 mm (1.1 inches), the preferred configuration for redundant measurements is to use two transducers observing the same side of a collar. When 28 mm to 56 mm (1.1 to 2.2 inches) of total range are required, install the transducers in a complementary fashion on opposite sides of the differential expansion collar or other target material. 

Part Number Breakdown

Bently Nevada uses structured model numbers to define specific hardware options. 

This specific code translates to the following configuration:

330877: Core model for the 3300 XL 50 mm Extension Cable.

080: Indicates a cable length of 8.0 meters (26.2 feet).

36: Specifies the armor and cable option, which dictates a FluidLoc cable without armor. The FluidLoc construction prevents moisture or process fluids from wicking through the cable.

00: Denotes no agency approvals or standard global certifications.

Ordering Information – 3300 XL 50 mm Extension Cable

330877-AXXX-BXX-CXX
Note: Make sure that the extension cable length and the probe length, when added together, equal the Proximitor Sensor total length.
A: Cable Length Option
0 4 0 4.0 metres (13.1 feet)
0 8 0 8.0 metres (26.2 feet

B: Armor and Cable Option
3 6 FluidLoc ext cable
3 7 FluidLoc ext. cable w/ armor

C: Agency Approval Option

0 0 No Approvals
0 5 Multiple Approvals
Frequently Asked Questions:
1.Does the customer arrange for the inspection before the goods are shipped?
Confirmed acceppted this issue

2.What is the payment term?
Only wire transfer

3.When does the warranty period start?
One year from the time the client receives the goods.

Datasheet Link:

330877-080-36-00 Bently Nevada 50 mm Extension Cable PDF Datasheet