Velocity Transducer Systems - 9200 and 74712

Velocity Transducer

These are 2-wire, moving-coil velocity transducers, designed for general purpose velocity measurements. For most applications, however, we recommend the use of our Velomitor® piezo-velocity sensors.







9200 and 74712 Seismoprobe Velocity Transducers

Specifications are at approximately +22°C (+72°F) with 25 mm/s (1 in/s) of machine casing vibration at 100 Hz (6000 cpm) with a 10 kilo ohm load unless otherwise specified.


Sensitivity 20 mV/mm/s (500 mV/in/s), ±5% when properly terminated and oriented at the angle of calibration
Frequency Response From minimum operating frequency (see ordering information) to 1 kHz (60,000 cpm); +0, -3dB typical.
Dynamic Operating Range 2.54 mm (0.100 in) peak to peak maximum displacement.
Shock Resistance Withstands 50 g peak maximum acceleration along nonsensitive axis.
Transverse Sensitivity ±10% maximum.
Polarity of Output Signal Pin A goes positive with respect to Pin B when the transducer case velocity is towards the connector.
Leadwire Length 305 metres (1,000 feet) maximum between Seismoprobe Velocity Transducer and 3300 or 3500 Monitor. Consult manual for frequency roll-off at longer lengths.

Hazardous Area Approvals

Multiple approvals for hazardous areas certified by Canadian Standards Association (CSA/NRTL/C) in North America and by Baseefa (2001) in Europe.

North America Ex ia
Class I Groups A, B, C, and D
Class II Groups E, F and G
Class III when installed per Dwg.
Europe Ex II 1 G EEx ia IIC T6 for EC
certificate number:Baseefa03ATEX0381XEE
Ex II 3 G EEx nL IIC T6
certificate number:Baseefa03ATEX0382X.

Environmental Limits

Operating and Storage Temperature 9200: -29°C to +121°C (-20°F to +250°F).
74712: -29°C to +204°C (-20°F to +400°F).
Environment Dust and moisture resistant.
Note: Contact your Sales Professional regarding transducer operation in a radiation environment.
Relative Humidity To 95%, noncondensing.
100%, non-submerged, when ordered with integral cable.


Case and Adapter Material Anodized aluminum A204
Gasket Material 9200: Neoprene
74712: Silicone
Connector Material
Top and Side Mount Options
Cadmium-plated aluminum, neoprene, and silver plated copper
Terminal Block Option Polyphenylene Sulfide with nickelplated copper contacts.
Coaxial Connector Option Silver-plated brass, fluoroethylene propylene (FEP), and beryllium copper
Mounting Torque
½-20, ¼-20, ¼-28, 5/8-18, or M10x1 mounting base options
5.6 N•m (50 in•lb)
8-32 threaded studs 1.41 N•m (12.5 in•lb)


9513 Height 102 mm (4 in) typical (depends on connector option).
Diameter 41 mm (1.6 in) typical.
Weight 480 grams (17 ounces) typical.

9513 Velocity-to-Displacement Converter


Model 9513 requires -18 Vdc.
Output Sensitivity (with a 500 mV/in/s input) 9513-02: 200 mV/mil (8 V/mm) ±5%. (Valid for frequencies above 5 Hz [300 cpm])
9513-09: 100 mV/mil (4 V/mm) ±5%. (Valid for frequencies above 5 Hz [300 cpm])
Frequency Range Minimum operating frequency to 10 kHz (600,000 cpm).
Output Impedance For model 9513-02, 100 Ω.
Output Bias 5.8 to 9.5 Vdc.


9513 Height 38 mm (1.50 in)
Length 89 mm (3.50 in)
Width 54 mm (2.12 in)
Weight 180 g (6.50 oz)
Mounting Holes Four 4.8 mm (0.19 in) diameter holes centered in all corners of a rectangle 50.8 mm (2 in) long by 44.5 mm (1.75 in) wide.
Seismoprobe Velocity Transducer Orientation All Seismoprobe Velocity Transducers are specified for mounting orientations as shown in Figure 1.


Descriptions English
Housings for Proximitor Sensors and Interface Modules Housings for Proximitor Sensors and Interface Modules
Velocity Transducer Systems - 9200 and 74712 Datasheet Velocity Transducer Systems - 9200 and 74712 Datasheet