Bently Nevada 74712-01-10-02-00 high temperature Seismoprobe Velocity Transducers
Description:
Bently Nevada Seismoprobe Velocity Transducer Systems are designed to measure absolute (relative to free space) bearing housing, casing, or structural vibration. The Seismoprobe family of velocity transducers is a two-wire design that uses moving-coil technology. It provides a voltage output directly proportional to the transducer's vibration velocity. The 74712-01-10-02-00 is a high temperature version.

Specifications:
Sensitivity:  20 mV/mm/s (500 mV/in/s), ±5% when properly terminated and oriented at the angle of calibration.
Calibration Load: 10 kΩ Terminal "A" to "B" Output taken across pins "A" and "B"
Sensitivity Temperature Coefficient: 0.2%/°C
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.
Velocity Range: 25 mm/s (1 in/s) (at +22 °C of casing vibration at 100 Hz with a 10 kΩ load.
Coil Resistance: 1.25 kΩ ±5%

Ordering Information:
High-temperature Two-wire Transducer
74712-AA-BB-CC-DD
A: Transducer Mounting Angle/Minimum Operating Frequency Option
01  0 ±2.5, 4.5 Hz (270 cpm)
02  45 ±2.5, 4.5 Hz (270 cpm)
03  90 ±2.5, 4.5 Hz (270 cpm)
06  0 ±100, 10 Hz (600 cpm)
07  0 ±180, 15 Hz (900 cpm)
B: Mounting Base Option
01  Circular; 1/4-20 UNC stud
02  Circular; 1/4-28 UNF stud
03  Rectangular flange
04  Circular; with three 8-32 threaded studs on a 44 mm (1.75 in) diameter bolt circle
05  No base; 1/2-20 UNF-3A stud
06  Isolated circular 1/4-20 UNC stud
07  Isolated circular 1/4-28 UNF stud
08  Isolated rectangular flange
09 Isolated circular 5/8-18 UNF stud
10  Circular; M10X1 stud
11  Isolated circular M10X1
12  Isolated circular 1/2-20 UNF-2A
C: Connector Option
02  Top Mount
03  Terminal block top mount
04  Side mount
D: Agency Approval Option
00  No Approvals
01  CSA
04  ATEX/IECEx