Technical specifications for 330903-00-04-50-01-00

Description

Part Number:330903-00-04-50-01-00
Model: 3300 NSv Proximity Probes
Manufacturer: Bently Nevada
Condition: New & Original in Factory Packing
Factory Warranty: 12 Months

Ordering Information
Model: 330903 – 3300 NSv Probe, M8X1 thread, without armor
Unthreaded Length Option: -00- 00 mm
Overall Case Length Option: -04-40 mm
Total Length Option: 50 5.0 meters (16.4 feet)
Connector and Cable Type Option:01
Miniature coaxial ClickLoc connector
with connector protector, standard
cable

Agency Approval Option: 00 Not required

Probe dc Resistance
Probe Length
(m)
Resistance from the Center
Conductor to the Outer
Conductor (RPROBE)
(ohms)
5.0 5.3 ± 0.7

The 3300 NSv probe and extension cable are
mechanically and electrically compatible and
interchangeable with Bently Nevada’s previous
3300 RAM proximity probe and extension cable.
The NSv probe has increased chemical
resistance compared to the 3300 RAM probe,
which allows its use in many process
compressor applications. The side-view
characteristics of the 3300 NSv probe are also
superior to those of the 3000-series 190 probe
when gapping the 3300 NSv probe at the same
distance from the probe target.

Extension cable
dc resistance
Center conductor: 0.220
Ω/m (0.067 Ω/ft)
Shield: 0.066 Ω/m (0.020
Ω/ft)
Extension cable
capacitance
69.9 pF/m (21.3 pF/ft)
typical
Field Wiring
0.2 to 1.5 mm2 (16 to 24
AWG)[0.25 to 0.75 mm2 (18
to 23 AWG) with ferrules].
Recommend using threeconductor shielded triad
cable. Maximum length of
305 meters (1,000 feet)
between the 3300 XL NSv
Proximitor Sensor and the
monitor. See the frequency
response graphs Figure 16
and Figure 17 for signal
rolloff at high frequencies
when using longer field
wiring lengths.
Linear Range
1.5 mm (60 mils). Linear
range begins at
approximately 0.25 mm (10
mils) from target and is
from 0.25 to 1.75 mm (10 to
70 mils) (approximately -1
to -13 Vdc).
Recommended
Gap Setting 1.0 mm (40 mils)

Incremental
Scale Factor
(ISF)
7.87 V/mm (200 mV/mil)
+12.5%/-20% including
interchangeability error
when measured in
increments of 0.25 mm (10
mils) over the 1.5 mm (60
mil) linear range.
Deviation from
best fit straight
line (DSL)
Less than ±0.06 mm (±2.3
mils).

Frequency
Response
0 to 10 kHz: +0, -3 dB
typical, with up to 305
meters (1000 feet) of field
wiring.
Target Size (flat
target)
Minimum: 8.9 mm (0.35 in)
diameter
Recommended minimum:
13 mm (0.5 in) diameter
Axial position
measurements on shaft
diameters smaller than 13
mm (0.5 in) will generally
result in a change in scale
factor. Reducing the gap
between the probe and
target will help limit the
change in scale factor. See
Figure 12 for additional
information.

Probe Tip
Material Polyphenylene sulfide (PPS).
Probe Case
Material AISI 304 stainless steel (SST).
Probe Cable
Specifications
75 Ω coaxial, fluoroethylene
propylene (FEP) insulated
probe cable in the following
total probe lengths: 0.5, 1, 5,
or 7 meters.

Recommended
torque Finger tight
Maximum torque 0.56 N•m (5 in•lb)

Minimum Bend
Radius (with or
without sst
armor)
25.4 mm (1.0 in)

Operating
Temperature
-52°C to +177°C (-62°F to
+351°F)
Storage
Temperature
-52°C to +177°C (-62°F to
+351°F)

Probe
Pressure
3300 NSv probes are
designed to seal differential
pressure between the probe
tip and case. The probe
sealing material consists of a
Viton O-ring. Probes are not
pressure tested prior to
shipment. Contact our
custom design department if
you require a test of the
pressure seal for your
application.

Connector-to-connector Torque
Probe Case
Torque
Maximum
Rated Recommended

1/4-28 or
M8X1 probe
cases
7.3 N•m
(65 in•lb)
5.1 N•m
(45 in•lb)

Probe
Case
Thread
Maximum Length of Thread
Engagement
M8x1 12 mm