BENTLY NEVADA 9200-01-01-10-00 Two-Wire Velocity Seismoprobe Transducer

Description

Bently Nevada Seismoprobe Velocity Transducer Systems are designed for measuring absolute (relative to free space) bearing housing, casing, or structural vibration. These two-wire systems consist of a transducer, suitable cable, and an optional velocity-to-displacement converter.

The Seismoprobe velocity transducers in the family use moving-coil technology and provide a voltage output that’s directly proportional to the transducer’s vibration velocity. Unlike solid-state velocity transducers, which are essentially accelerometers with built-in integration electronics, moving-coil transducers are less sensitive to impact or impulsive excitation, making them suitable for specific applications. Additionally, they require no external power, making them convenient for portable measurements.

Note: For most installations, Bently Nevada’s Velomitor family of velocity transducers, which incorporate solid-state technology, offer superior performance and robustness for casing velocity measurement applications.

Two types of Seismoprobe Velocity Transducers are available:

9200: A two-wire transducer suitable for continuous monitoring or periodic measurements with test or diagnostic instruments. When ordered with the integral cable option, the 9200 offers excellent resistance to corrosive environments without needing additional protection.
74712: A high-temperature version of the 9200.

Various interconnect cables are available to connect the 9200 and 74712 transducers to other instruments or a velocity-to-displacement converter. These cables are available in one-foot (300 mm) increments, with or without stainless steel armor.

One type of velocity-to-displacement converter (VDC) is available: 9513, to be used with 9200 and 74712 transducers.

Specifications

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.

Electrical

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.

Please contact BENTLY NEVADA, INC. for detailed calibration data.

Dynamic Operating Range: 2.54 mm (0.100 in) peak to peak maximum displacement.

Shock Resistance: Withstands 50 g peak maximum acceleration along the 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 meters (1,000 feet) maximum between Seismoprobe Velocity Transducer and 3300 or 3500 Monitor. Consult the manual for frequency roll-off at longer lengths.

Two-wire Transducer

The 9200 Two-wire Velocity Seismoprobe Transducer can be used with the 9513 VDC, which is ordered separately (see Velocity-to-Displacement Converter).

Ordering information

9200-AXX-BXX-CXX-DXX

A: Transducer Mounting Angle/Minimum Operating Frequency Option

0 1: 0 ±2.5, 4.5 Hz (270 cpm)
0 2: 45 ±2.5, 4.5 Hz (270 cpm)
0 3: 90 ±2.5, 4.5 Hz (270 cpm)
0 6: 0 ±100, 10 Hz (600 cpm)
0 9: 0 ±180, 15 Hz (900 cpm)
1 1: 90 ±10, 10 Hz (600 cpm)

B: Connector Option

0 1: Top Mount
0 2: Side Mount
0 5: Terminal block top mount
0 6: Coaxial connector (for test equipment only)
0 7 thru 5 0: Environmentally resistant with integral cable. Option number corresponds to cable length 7.0 feet (2.1 meters) min., 50.0 feet (15 meters) max. When ordering with approvals, the max length available is 32 feet (9.75 meters) max. Ordered in increments of 1.0 ft.

C: Mounting Base Option

0 1: Circular; 1/4-in 20 UNC stud
0 2: Circular; 1/4-in 28 UNF stud
0 3: Rectangular flange
0 4: Circular; with three 8-32 threaded studs on a 44 mm (1.75 in) diameter bolt circle
0 5: No base; 1/2-in 20 UNF-3A stud
0 6: Isolated circular 1/4-in 20 UNC stud
0 7: Isolated circular 1/4-in 28 UNF stud
0 8: Isolated rectangular flange
0 9: Isolated circular 5/8-in 18 UNF stud
1 0: Circular; M10X1 stud
1 1: Isolated circular M10X1
1 2: Isolated circular ½-in 20 UNF-2A