990-05-XX-03-CN | Bently Nevada | 990 Vibration Transmitter (2024)

FAQs

How do you test a vibration transmitter? ›

Use a vibration shaker or exciter to generate controlled vibrations. Apply different frequencies and amplitudes to the sensor and measure the corresponding output signals. This test helps determine the sensor's frequency response and linearity.

How do Vibration Sensors Work? The vibration sensor consists of a piezoelectric crystal that has a seismic mass attached to it. When the equipment/machine under study experiences vibrations, the crystal is subjected to stress, and an electric signal is generated, which is then converted to valuable data.

They work on the eddy current principle, where the sensor coil impedance changes as the gap between the probe and the rotating equipment changes due to vibration.

Bently Nevada offers machine condition monitoring and protection hardware and software, backed by industry-leading expertise and truly global support.

Vibration sensors are used for monitoring systems, whereas vibration transmitters are used for control system inputs.

The vibration transmitter's 4-20 mA output is proportional to overall acceleration vibration. The sensor also outputs the dynamic acceleration signal.

Vibration sensors are piezoelectric accelerometers that sense vibration. They are used for measuring fluctuating accelerations or speeds or for normal vibration measurement.

Placing a vibration sensor as close to the bearing as possible is the ideal scenario, but anywhere on the solid chassis that houses the bearing is normally sufficient.

Bently Nevada was privately held until 2002 when it was acquired by General Electric and became part of GE Oil and Gas.

What is the voltage of a vibration sensor? ›

Most internally amplified vibration sensors require a constant current DC power source. Generally, the power supply contains an 18 to 30 volt source with a 2 to 10 mA constant current diode (CCD) (see Figure 1).

Bently Nevada's competitors

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Baker Hughes – Bently Nevada 3500 System TDI Firmware version 5.05 has a vulnerability in their password retrieval functionality which could be used by an attacker to access passwords stored on the device.

The Bently Nevada (BN) 3500 Vibration Monitoring System, the latest vibration system from Bently Nevada, provides continuous, online vibration monitoring suitable for machinery protection applications.

Disconnect one end of the measuring signal leads, and connect a multimeter or a loop calibrator in series with the transmitter circuit. Note the mA reading, which is expected to be between 4mA and 20mA. If the reading is not between the expected ranges then calibration is required.

An accelerometer or ceramic piezoelectric sensor is commonly used to measure vibration. Most accelerometers rely on the use of the piezoelectric effect, which occurs when a voltage is generated across certain types of crystals as they are stressed.