products

Description
Bently Nevada Seismoprobe Velocity Transducer Systems are designed to measure absolute (relative to free space) bearing housing, casing, or structural vibration. The two-wire systems consist of a transducer and appropriate cable.

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.

Moving-coil transducers are less sensitive to impact or impulsive excitation than solid-state velocity transducers, which are inherently accelerometers with embedded integration electronics. Moving-coil transducers are less sensitive to impact or impulsive excitation and can represent a good choice for
certain applications. Because they don’t require external power, they are convenient for portable measurement applications.

For most installations, Bently Nevada's Velomitor family of velocity transducers, which incorporate solid-state technology, provide improved performance and ruggedness for casing velocity measurement applications.

Available Types
Two types of Seismoprobe Velocity Transducer are available:
l 9200: The 9200 is a two-wire transducer suitable for continuous monitoring or for periodic measurements in conjunction with test or diagnostic instruments. When ordered with the integral cable option, the 9200 has excellent resistance to corrosive environments without need of additional protection.
l 74712: The 74712 is a high temperature version of the 9200.
Interconnect cables are available for connecting the 9200 and 74712 transducers to other instruments. These cables are available in various lengths with or without stainless steel armor.

When ordering the 9200 and 74712 Seismoprobe Velocity Transducers, expect approximately a six (6) week lead time. That lead time can vary based on component availability and configuration. Contact your local Bently Nevada representative for projected lead times for your specific order.

Ordering Information
For the detailed listing of country and product specific approvals, refer to the Approvals Quick
Reference Guide (document 108M1756) at Bently.com.

Two- wire Transducer
9200 - - 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)
09
0 ±180, 15 Hz (900 cpm
B: Connector/Cable Option
01 Top Mount (no cable)
02
Side Mount (no cable)
05 Terminal block top mount (no cable)

10 10 feet (3.0 metres)
15 15 feet (4.6 metres)
22 22 feet (6.7 metres)
32 32 feet (9.8 metres)
50 50 feet (15.2 metres)

C: Mounting Base Option
01 Circular; 1/4-in 20 UNC stud
02 Circular; 1/4-in 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-in 20 UNF-3A stud
06 Isolated circular 1/4-in 20 UNC stud
07 Isolated circular 1/4-in 28 UNF stud
08 Isolated rectangular flange
09 Isolated circular 5/8-in 18 UNF stud
10 Circular; M10X1 stud
11 Isolated circular M10X1
12 Isolated circular ½-in 20 UNF-2A

D: Agency Approval Option
00 No Approvals
04 ATEX/IECEx