23732 accelerometer 141627NC1

Specifications and Ordering Information

23732 Acceleration Transducer SystemBNC Part Number 141627-01

Revision NC, August 1999DescriptionThe 23732 Acceleration Transducer System consists of an accelerometer,interconnect cable, and interface module. It is intended for critical machineryapplications where casing acceleration measurements are required, such asgear mesh monitoring.If housing measurements are being made for overall protection of themachine, thought should be given to the usefulness of the measurement foreach application. Most common machine malfunctions (imbalance,misalignment, etc.) originate at the rotor and cause an increase (or at least achange) in rotor vibration. In order for any housing measurement alone to beeffective for overall machine protection, a significant amount of rotor vibrationmust be faithfully transmitted to the bearing housing or machine casing, ormore specifically, to the mounting location of the transducer.In addition, care should be exercised in the physical installation of thetransducer. Improper installation can result in a decrease of the transduceramplitude and frequency of the transducer amplitude and frequencyresponse and/or the generation of signals which do not represent actualmachine vibration.Upon request, Bently Nevada can provide engineering services to determinethe appropriateness of housing measurements for the machine in questionand/or to provide installation assistance.Note: For most applications, the newer 330400 or 330425 accelerometers represent a superiorchoice, and are compatible with most installations where the 23732 would be used. SeeSpecifications and Ordering Information (p/n 141638-01), and consult your local Bently NevadaSales or Service Professional.SpecificationsOutputAccelerometerSensitivity:25 mV/g (2.55 mV/m/s2) ±5%Acceleration Range:75 g (735 m/s2

) peak

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Frequency Response:

10 Hz to 20 kHz

(600 cpm to 1.2 million cpm) ±3 dB,30 Hz to 10 kHz

(1800 cpm to 600,000 cpm) ±5%.Mounted Resonant30 kHz minimum

Frequency:Amplitude Linearity:

±1% to 50 g (490 m/s2) peak.±5% to 75 g (735 m/s2) peak,tested at a single frequencybetween 100 Hz and 500 Hzper ANSI S2.11-1969.Electrical Isolation:

Case is internally connected tosystem common. Isolation frommachine case is provided by abuilt-in isolator.

Shock Survivability:

±5000 g (±49,050 m/s2) peak

Environmental LimitsAccelerometerOperating and-29°C to +121°CStorage

Temperature:(-20°F to +250°F)Relative Humidity:To 95%, noncondensing

PhysicalAccelerometerMounted Height:45 mm (1.8 in)

Mounting Surface:17.5 mm diameter (0.69 in)Mounting Thread:1/4-in 28 UNF x 7.9 mm (0.31 in)long

Hex:19.0 mm (0.75 in) flatsWeight:60 g (2.1 oz)Case Material:

316L stainless steelBNC Part Number 141627-01Revision NC, August 1999

Input

Interface ModulePower

-18 to -24Vdc at 15 mA maximum;Requirements:10 mA typical.

Leadwire Length:

305 metres (1,000 feet) maximumbetween I/F Module and 3300monitor.

OutputInterface ModuleSensitivity:

100 mV/g (10.2 mV/m/s2) nominal.

Environmental LimitsInterface ModuleOperating and-40°C to +100°CStorage

Temperature:(-40°F to +212°F)Relative Humidity:To 95%, noncondensingWeight:

170 g (6 oz)

Ordering Information

23732-01 Accelerometer23733-03 Interface module18622-AXXX-BXX Interconnect cableOption DescriptionsA: Cable LengthOrder in increments of 1 footOption

(0.3 metre).

Minimum: 0 0 1 = 1 ft (0.3 m).Maximum: 3 0 0 = 300 ft (91 m).B: Armor/cable0 0 Without armor, with Teflon®

Option

cable

0 1 With armor, with Teflon® cable0 2 Without armor, with Tefzel®

cable

0 3 With armor, with Tefzel® cable

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81807-01

Accessories

04590016Standard Accelerometer Mount,glue-on version.Standard Accelerometer Mount,

37439-01Accel mounting base for theEpoxy resin.

Standard Accelerometer.49560-01Handheld Accelerometer

81173-01Standard Accelerometer

Environmental Boot.

37631-01Installation Tool.

1999 Bently Nevada Corporation

â used in this document are registered marks of Bently Nevada CorporationTefzel® is a registered trademark of E.I. DuPont Company.

Teflon® is a trademark of E.I. duPont de Nemours & Company, Inc.

Dimensional Drawing

Figure 1: Accelerometer Interface Module Dimensional Drawing

BNC Part Number 141627-01

Revision NC, August 1999Page 3 of 4

BNC Part Number 141627-01Revision NC, August 1999Figure 2: 23732 Accelerometer Dimensional DrawingDimensions are in millimetres (inches)Page 4 of 4