3300 Ceramic Capped Probe
Datasheet

Bently Nevada Machinery Condition Monitoring

172932 Rev. H

Description
The 3300 Ceramic Capped Probe is a state-of-the-art
solution for monitoring machinery in aggressive chemical or
high-pressure environments. The alumina cap and 304
stainless steel probe case provide robust protection andincreased life for applications in anhydrous ammonia orother extreme pH environments. The ceramic capped probe
is compatible with the 3300 Proximitor Sensor and extension
cable.
Our Bently Nevada ceramic-capped probes are rated to 34
Bar (500 psi) pressure. Modifications are available forapplications involving higher pressures.
The 146054, 146055, and 164517 probes were developed for
applications that expose only the front of the probe caseassembly to corrosive gases and liquids. These ceramic
probe assemblies prevent corrosive gases and liquids fromentering the front end of the probe case. We leak test thefront-end ceramic to metal interface with helium to ensure ahermetic seal. These probes do not have a rear fitting or
stainless steel tube, so that the rear of the probes are notsealed. You must not expose the rear of these probes todestructive environments such as water, NH3, NH4OH,
hydrogen sulfide, etc.
The 146056 ceramic probe assembly has the rear fitting andstainless steel tubing to prevent corrosive gases and liquids
from entering both the front and rear of the probe case. We
leak test the front-end ceramic to metal interface with helium
to ensure a hermetic seal. The fitting at the rear end of theprobe is unsealed when it leaves the factory. You candisconnect the tubing and the fittings from the probe caseand slide them out of the way while gapping and installing
the probe. Once you have secured and correctly gapped theprobe, you should tighten the fittings to completely seal therear of the probe.

3300 Ceramic Capped Probe
Datasheet

172932 Rev. H
1.0 mm (40 mils)Specifications
Unless otherwise noted, the following
specifications are for a 3300 5 mm system
including Proximitor Sensor, extension cableand probe between +18°C and +27°C (+64°F to+80°F), with a -24 Vdc power supply, a 10 kW
load, and an AISI 4140 steel target. Performance
characteristics apply to systems that consist
solely of 3300 XL components. The systemaccuracy and interchangeability specifications
do not apply when using a transducer systemcalibrated to any target other than our AISI 4140
steel target.

Recommended
Gap Setting

Electrical
Probe Nominal DC Resistance
Probe
LengthResistance from the Center
Conductor to the Outer
Conductor (ohms)

0.5

7.45 ± 0.50

1.0

7.59 ± 0.50

2.0

7.88 ± 0.50

5.0

8.73 ± 0.70

9.0

9.87 ± 0.90

The linear range of theceramic-capped probes are
shifted compared withstandard 3300 XL probes. The
probes are very robust but
cannot withstand direct
mechanical loads on theprobe tip. Gap the probe
electrically and avoid contact
with the target surface.
Configuring the monitor whenusing ceramic- cappedprobes requires extra care.
Due to the shift in the curvefrom that of a standard 3300
XL probe, the probe tip may
contact the shaft before theprobe reaches lower OK limit.
Your installation may requirea monitor modification toaccommodate this condition.

Incremental Scale Factor (ISF)

Standard
5-metre or
9-metre system

7.87 V/mm (200 mV/mil)±6.5% includinginterchangeability error
when measured inincrements of 0.25 mm (10mils) over the 60 mil linear
range from 0°C to +45°C(+32°F to +113°F).

Mechanical

Linear Range

1.52 mm (60 mils). Linear
range begins atapproximately 0.25 mm (10mils) from target and isfrom 0.25 to 1.78 mm (10 to
70 mils) (approximately –4
to –16 Vdc).

Probe Tip
Material

Alumina ceramic (Al2O3)

Probe Case
Material

AISI 304 stainless steel.

Probe Cable Specifications

Standard
cable

2/12

75 Ω coaxial, fluoroethylene
propylene (FEP) insulated probe
cable in the following totalprobe lengths: 0.5, 1, 2, 5, or 9
meters.

3300 Ceramic Capped Probe
Datasheet

172932 Rev. H

Table 1: Connector Tightening Instructions

Thread Engagement Limits
Probe
Case
ThreadMaximum Length of Thread
Engagement

3/8-240.563 in

M10x1

15 mm

Connector
Type
2 3300 XL
gold "click"type
connectors

Finger tight1 non-XL
stainlesssteel
Finger tight plus 1/8 turn using
connector
pliersand 1 3300
XL connector

Maximum thread engagement
lengths are per the industry standardof 1.5 times the nominal thread
diameter. A fit class matching that of
the external probe thread is assumed
for all internal threads. Applications
with thread engagement lengths
exceeding the values in the table
above may exhibit binding during
installation. Contact your Bently
Nevada representative if you require
probe thread engagement lengths
exceeding the values above. Bently
Nevada does not replace proximity
probes under warranty due toexcessive thread engagement
lengths.

Maximum
Torque0.565 N•m (5 in•lbf)

Cable
Minimum
Bend Radius

25.4 mm (1.0 in)

Environmental Limits
Probe Temperature Range
Operating and-51°C to +177°C (-60°F to
Storage+351°F)
Temperature

Connectors
The 3300 XL probe has corrosion-resistant,gold-plated ClickLoc connectors. These
connectors require only finger-tight torque(connectors will "click"), and the speciallyengineered locking mechanism prevents theconnectors from loosening. The connectors
require no special tools for installation or
removal. The connector can be ordered in aremovable nut configuration, or as thestandard ClickLoc connector on probe 146056.

Probe
Pressure

Rated to seal 34 Bar (500 psi)
nitrogen. Modifications areavailable for higher-pressure
applications. Contact ourcustom design department if
you require a test of thepressure seal for yourapplication.

It is the responsibility of the customer
or user to ensure that all liquids andgases are contained and safely
controlled should leakage occur froma proximity probe. Bently Nevada
does not be held responsible for any
damages resulting from leaking
proximity probes.

You can also order 3300 XL Probes withconnector protectors already installed or
supplied separately for installation in the field(such as when you must run the cable throughrestrictive conduit). We recommend connector
protectors for all installations to provide
increased environmental protection.
Connector
Material

Tightening Instructions

Gold-plated brass or goldplated beryllium copper.

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3300 Ceramic Capped Probe
Datasheet

172932 Rev. H

Compliance and Certifications
FCC
This device complies with part 15 of the
FCC Rules. Operation is subject to thefollowing two conditions:llThis device may not cause harmfulinterference.
This device must accept any
interference received, includinginterference that may cause
undesired operation.

RoHS
European Community Directive:
RoHS Directive 2011/65/EU

Maritime
2019 Rules for Conditions of Classification,
Part 1, 1-1-1/7.7, 1-1-A3, 1-1-A4
2019 Rules for Conditions of Classification,
Part 1, Offshore Units and Structures
1-1-4/9.7, 1-1-A2, 1-1-A3

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3300 Ceramic Capped Probe
Datasheet

172932 Rev. H

Hazardous Area Approvals

nA, ecWhen installedwith nonincendive
circuitconnected per
drawing
140979.

For the detailed listing of country andproduct-specific approvals, refer tothe Approvals Quick Reference Guide(108M1756).
For additional technicaldocumentation, please log in to
bntechsupport.com and access the
Bently Nevada Media Library.

3300 XL Proximitor Sensoria
II 1 GEx ia IIC T4/T5 Ga
Ex ia IIIC T90C/T105C Dc
For EPL Dc:
T105C @ Ta = -55°C to 100°C
T90C @ Ta = -55°C to +85°C

3300 XL Proximitor Sensor

When installedwith
intrinsicallysafe zener
barriers per
drawing 141092
or wheninstalled with
galvanic
isolators.
nA, ecWhen installedwith nonincendive
circuitconnected per
drawing
140979.

Class I, Zone 0: AEx/Ex ia IIC T4/T5 Ga;
Class I, Groups A, B, C, and D,Class II, Groups E, F and G,Class III;
T5 @ Ta= -55°C to + 40°C.
T4 @ Ta= -55°C to + 80°C.

When installedwith
intrinsicallysafe zener
barriers per
drawing 141092
or wheninstalled with
galvanic
isolators.

Ui= -28V

Uo= -28V

Ii= 140mA

Io= 140mA

Pi= 0.91W

Po= 0.742W

Ci- 47nF

Co= 1.5nF

Li= 1460µH

Lo= 610µH

nA,ecClass I, Zone 2: AEx/Ex nA IIC T4/T5 Gc;
Class I, Division 2, Groups A, B, C, andD;Class I, Zone 2: AEx/Ex ec llC T4/T5 Gc;
Class I, Division 2, Groups A, B, C, andD;

II 3 GEx nA IIC T4/T5 Gc
Ex ec llC T4/T5 Gc
Ui= -28V
li= 140 mA
T5 @ Ta= -55˚ C to + 40˚C
T4 @ Ta= -55 ˚C to + 80˚C

T5 @ Ta= -55°C to + 40°C
T4 @ Ta= -55°C to + 80°C

3300 XL Probe

3300 XL Probeia(see Temperature Schedule table tofollow)

ATEX/IECEx

cNRTLusia

Class I, Zone 2: AEx/Ex nA IIC T5…T1 Gc;
Class 1, Division 2, Groups A, B, C, D;
Class 1, Zone 2: AEx/Ex ec llC T5…T1 Gc;
Class I, Division 2, Groups A, B, C, andD;

Probe entity parameters are met
when used with BN extension cables
and connected to BN Prox.

Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga;
Class 1, Groups A, B. C, and D,Class II, Groups E, F, and G,Class III;(see Temperature Schedule table tofollow)

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3300 Ceramic Capped Probe
Datasheet

172932 Rev. H

Hazardous Area Conditions ofSafe Useia
II 1 GEx ia IIC T5…T1 Ga,(see Temperature Schedule
table to follow)

cNRTLus:

Ex ia IIIC T90°C ... T280°C Dc
For EPL Dc:

ia

Ui= -28V

Ci = 1.5 nF

nA, ecIi = 140 mA

Li =610 μH

Install per Bently Nevada drawing 140979.

Install per Bently Nevada drawing 141092.

Pi = 0.91 W

ATEX/IECEx:

nA,ec

ia

II 3 GEx nA IIC T5…T1 Gc,
Ex ec llC T5…T1 Gc,(see Temperature Schedule
table to follow)
Ui= -28V

Install per Bently Nevada drawing 141092.
nA, ecThe Proximitor must be installed so as toprovide the terminals with a degree ofprotection of at least IP54.

li= 140 mA

Temperature Schedule
Temperature
Classification

Ambient Temperature(Probe Only)

For EPL Ga and Gc
T1-55°C to +232°C

T2-55°C to +177°C

T3-55°C to +120°C

T4-55°C to +80°C

T5-55°C to +40°C

For EPL Dc
T280°C @ Ta

-55°C to +232°C

T225°C @ Ta

-55°C to +177°C

T170°C @ Ta

-55C to +120°C

T130°C @ Ta

-55°C to +80°C

T105°C @ Ta

-55°C to +100°C

T90°C @ Ta

-55°C to +40°C

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3300 Ceramic Capped Probe
Datasheet

172932 Rev. H

02

Ordering Information

Miniature coaxial ClickLoc
connector, standard cable

D: Agency Approval Option

For the detailed listing of country andproduct-specific approvals, refer tothe Approvals Quick Reference Guide(108M1756).

00

Not required

05

CSA, ATEX, IECEx

3300 Ceramic Capped Proximity
Probes, Metric

For additional technicaldocumentation, please log in to
bntechsupport.com and access the
Bently Nevada Media Library.

164517, 3300 Ceramic Capped Probe, M10 x 1
thread, without armor

3300 Ceramic Capped Proximity
Probes164517 with Modification 172330, 3300 Ceramic
Capped Probe, M10 x 1 thread, with armor

146054 3300 Ceramic Capped Probe, 3/8-24
UNF thread, without armor

Part Number-AA-BB-CC-DD
A:

146054 with Modification 164523 3300
Ceramic Capped Probe, 3/8-24 UNF thread,with armor

Order in increments of 1 mm.
Metric thread configurations:
Maximum length: 100 mm
Minimum length: 20 mm

Part Number-AA-BB-CC-DD
A:

Overall Case Length Option

Overall Case Length Option

Example0 6 0 = 60 mm

Order in increments of 0.1 inThreaded length configurations:
Maximum case length: 4.0 in
Minimum case length: 0.8 in

B: Total Length Option
05

0.5 meter (1.6 feet)10

1.0 meter (3.3 feet)

2 4 = 2.4 in

20

2.0 meters (6.6 feet)

B: Total Length Option

50

5.0 meters (16.4 feet) 1

90

9.0 meters (29.5 feet)

Example05

0.5 meter (1.6 feet)10

1.0 meter (3.3 feet)20

2.0 meters (6.6 feet)50

5.0 meters (16.4 feet)190

9.0 meters (29.5 feet)

C: Connector and Cable-Type Option

C: Connector and Cable-Type Option
01

Miniature coaxial ClickLoc
connector with connector
protector, standard cable

7/12

01

Miniature coaxial ClickLoc
connector with connector
protector, standard cable

02

Miniature coaxial ClickLoc
connector, standard cable

D:

Agency Approval Option00

Not required

05

Multiple Approvals

3300 Ceramic Capped Probe
Datasheet

172932 Rev. H

3300 Ceramic Capped Reverse
Mount Probes

3300 Ceramic Capped Proximity
Probes, Special Cable Protection:

146055, 3/8-24 UNF threads2

146056, 3300 Ceramic Capped Probe, 3/8-24
thread with Stainless Steel tubing

146055-AA-BB-CC

146056-AA-BB-CC-DD-EE

A: Total Length Option

A:

Overall Case Length Option

05

0.5 meter (1.6 feet)10

1.0 meter (3.3 feet)20

2.0 meters (6.6 feet)50

5.0 meters (16.4 feet) 1

Example90

9.0 meters (29.5 feet)

B: Total Length Option

Order in increments of 0.1 inThreaded length configurations:
Maximum case length: 4.0 in
Minimum case length: 0.8 in

B: Connector Option
02

Miniature ClickLoc coaxial connector,
standard cable

C: Agency Approval Option00

Not required

05

Multiple Approvals

2 5 = 2.5 in

05

0.5 meter (1.6 feet)10

1.0 meter (3.3 feet)20

2.0 meters (6.6 feet)50

5.0 meters (16.4 feet)190

9.0 meters (29.5 feet)

C: NPT Exit Fitting
01

1/4" NPT

02

1/2" NPT

D: Connector Option
02

Miniature ClickLoc coaxial
connector, standard cable

03

Removable nut ClickLoc coaxial
connector, standard cable

E: Agency Approval Option

8/12

00

Not required

05

Multiple Approvals

3300 Ceramic Capped Probe
Datasheet

172932 Rev. H

Accessories

40113-02

Connector Protector Kit
Connector Protector Kit forprobes and extension cables,
including installation tools. You
must order the 03800001
connector protector separately.

136536-01

Connector Protector Adapter
Allows you to use connector
protector installation tools
manufactured prior to 1998 with75 Ω ClickLoc connectors.

03839410

75 Ω Triaxial Male Connector
Protector Male connector
protectors are installed onto theextension cable and attach tothe female connector protector
on the probe, providing
environmental protection ofconnectors.

03800001

75 Ω Coaxial Female Connector
Protector Female connector
protectors are installed onto theprobe lead and attach to themale connector protector on
the extension cable, providing
environmental protection ofconnectors. Also placed on theextension cable to slide over theconnection to the Proximitor
sensor and protect it from theenvironment.

04301007

3/8-24 Probe Lock Nut withsafety wire holes Single probe
lock nut with two holes drilled
through the nut in order tosecure the lock nut in place withsafety wire.

Bently_Manuals

Customer DVD containing all
Bently Manuals, FWD, App Notes,
and Install Guides in all
available languages.

9/12

3300 Ceramic Capped Probe
Datasheet

172932 Rev. H

Graphs and Figures
Note: All dimensions shown in millimeters [inches] except as noted.

1.
2.
3.
4.
5.
6.
7.
8.
9.

Ceramic capped tip
Pressure sealing washer
Flat washer
Probe threads, 3/8-24 UNF 2A
5/16-in wrench flats
7.0 mm [0.273 in] diameter
7.2 mm [0.285 in] diameter
Case length, 102 mm [4.0 in] maximum length
Total length

Figure 1: Probe 146054, 3/8-24 Thread Forward Mount (Note 4-inch maximum case length)

1.
2.
3.
4.
5.

7/16-in Wrench flats
3/8-24 UNF 2A Mounting threads
7.0 mm [0.273 in] diameter
7.2 mm [0.285 in] diameter
Total length

Figure 2: Probe 146055, 3/8-24 Thread Reverse Mount, Suitable For Use In 31000 or 21000
Housings.

10/12

3300 Ceramic Capped Probe
Datasheet

172932 Rev. H

1.
2.
3.
4.
5.
6.
7.
8.

Ceramic capped tip
3/8-24 UNF 2A mounting threads
Stainless steel tubing, 6.3 mm (0.25 in) outside diameter1/4-in or 1/2-in NPT exit fitting
7.2 mm (0,285 in) diameter
6.9 mm (0.273 in) diameter
Case length9.50 ± 0.25 in for 0.5 m length probes, 20 ± 1 in for 1.0 m
length probes, 60 ± 1.0 in for 2.0 m and longer length
probes
9. Total length

Figure 3: Probe 146056, 3/8-24 Thread, Forward Mount With Stainless Steel Tubing Protecting
Probe Cable.
Probes ordered with 5 m or 9 m integral cables have a length tolerance of +20%, -0%.
Reverse mount probes are not available with armor or connector protector options.
5 m probes are designed for use with the 5 m Proximitor Sensor only.
Proximitor Sensors are supplied (by default) from the factory calibrated to AISI 4140 steel.
Calibration to other target materials is available upon request.

11/12

3300 Ceramic Capped Probe
Datasheet

172932 Rev. H

Copyright 2024 Baker Hughes Company. All rights reserved.

Bently Nevada, Proximitor and Orbit Logo are registered trademarks of Bently Nevada, a Baker Hughes business, inthe United States and other countries. The Baker Hughes logo is a trademark of Baker Hughes Company. All otherproduct and company names are trademarks of their respective holders. Use of the trademarks does not imply any
affiliation with or endorsement by the respective holders.
Baker Hughes provides this information on an “as is” basis for general information purposes. Baker Hughes does notmake any representation as to the accuracy or completeness of the information and makes no warranties of any
kind, specific, implied or oral, to the fullest extent permissible by law, including those of merchantability and fitness
for a particular purpose or use. Baker Hughes hereby disclaims any and all liability for any direct, indirect,
consequential or special damages, claims for lost profits, or third party claims arising from the use of theinformation, whether a claim is asserted in contract, tort, or otherwise. Baker Hughes reserves the right to makechanges in specifications and features shown herein, or discontinue the product described at any time without
notice or obligation. Contact your Baker Hughes representative for the most current information.
The information contained in this document is the property of Baker Hughes and its affiliates; and is subject tochange without prior notice. It is being supplied as a service to our customers and may not be altered or its content
repackaged without the express written consent of Baker Hughes. This product or associated products may becovered by one or more patents. See Bently.com/legal.

1631 Bently Parkway South, Minden, Nevada USA 89423
Phone: 1.775.782.3611 (US) or Bently.com/support
Bently.com

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