3500/42M - Proximitor Seismic Monitor

SPECIFICATIONS

Part No.: 3500/42M
Manufacturer: Bently Nevada
Country of Manufacture: United States(USA)
Product Type: Proximitor Seismic Monitor
Series: Bently Nevada 3500

3500/42M is a Proximitor Seismic Monitor component developed by Bently Nevada. It's a four-channel monitor with proximity and seismic transducer input. It compares the conditioned signals to user-programmable alarms and conditions the signal to produce vibration and location readings. The 3500 Rack Configuration Software can be used to program each channel to monitor and report radial vibration, thrust position, REBAM, acceleration, differential expansion, eccentricity, velocity, and other parameters.

3500/42M Features

• The monitor channels are set up in pairs and can execute up to two of the functions specified at the same time. Channels 1 and 2 can, for example, perform one function while Channels 3 and 4 perform another or the same.
• The Proximitor Seismic Monitor protects machinery by comparing monitored parameters to selected alarm setpoints in real-time, triggering alarms. It informs both operations and maintenance employees about critical machine information.
• Depending on the arrangement, each channel typically conditions its input signal to yield a set of static values. It is possible to establish alert setpoints for any current static value, as well as danger setpoints for any two of them.
• Set alarm levels for any value measured by the monitor and danger setpoints for any two of the values measured by the Monitor using Rack Configuration Software. For each measured value, alarms can be set from 0 to 100% of full scale. When the full-scale range exceeds the transducer's range, the setpoint is limited by the transducer's range.

3500/42M Technical Characteristics

Inputs

• Accepts signals from one to four proximity, acceleration, or velocity transducers.
• Power Consumption of 7.7 watts.

Outputs

• When the Monitor module is working properly, the OK LED lights on.
• When the Seismic Monitor module is connecting with other modules in the 3500 rack, the TX/RX LED lights.
• If the Seismic Monitor is in Bypass Mode, the Bypass LED lights.
• Buffered Transducers: Each channel has its own coaxial connector on the front of the display. Short-circuit protection is built into each connector.
• 550 ohms output impedance
• Shaft Power Supply -24 Vdc
• Resolution 0.3662A per bit
• Transducer Power Supply -24 Vdc
• The impedance of Absolute Output 300 ohms

Signal Processing

Temperature: 25 degrees celsius

Radial Vibration

• User-programmable direct filter
• Single-pole, -3db at 4 Hz to 4000 Hz or 1 Hz to 600 Hz, 1% precision
• Gap Filter: at 0.09 Hz, -3 dB
• Not 1X filter: Constant Q notch filter, minimum rejection in stopband of -34.9 dB, 60 cpm to 15.8 times running speed
• Smax varies between 0.125 and 15.8 times running speed.
• 1X and 2X vector filters: Constant Q Filter with a minimum rejection of -57.7 dB in the stopband

Accuracy

• Gap and Direct: Filtering not included within 0.33% of the full-scale
• 1X and 2X: Within 0.33 percent of the full-scale normal maximum of 1%

Differential Expansion and Thrust

• Within 0.33 percent of full-scale accuracy

3500/42M Alarms

Set alarm thresholds for any value measured by the monitor as well as danger setpoints for any two of those values using the rack configuration software.

Alarm Setpoints

For each measured value, alarms can be set from 0% to 100% of full-scale. The setpoint will be constrained by the transducer's range when the full-scale range is greater than it.

Accuracy of alarm setpoints

0.13 percent of the desired value is present.

3500/42M Static Values

Measurements used to check on the machine are called static values. The following static values are returned by the 3500/42M Proximitor Seismic Monitor:

Radial Vibration

• Direct, Gap, 1X Amplitude, 1X
• Phase Lag, 2X Amplitude, 2X
• Phase Lag, Not 1X Amplitude and Smax Amplitude

Thrust Position

Direct, Gap

Differential Expansion

Direct, Gap

Eccentricity

Peak-to-peak, Gap, Direct Minimum, Direct Maximum

REBAM

Spike, Element, Rotor, Direct, Gap, 1X Amplitude, 1X Phase Lag

Acceleration

Direct - Defined as one of the following: RMS Acceleration, Peak Acceleration, RMS Velocity, Peak Velocity, Band-pass peak Acceleration, or Band-pass peak velocity

Acceleration II

Direct, 1X Amplitude and 2X

Amplitude

Defined as one of the following: Band-pass peak Acceleration, Band-pass peak Velocity, RMS Acceleration, Peak Acceleration, RMS Velocity, Peak Velocity, and Band-pass peak Velocity. 1X Phase, 2X Phase, and Bias Voltage are also included.

Velocity

RMS Velocity, Peak Velocity, Peak-to-Peak Displacement, Band-pass Peak Velocity, Bandpass, or Peak-to-Peak Displacement are the definitions of direct.

Velocity II

Direct, 1X Amplitud and 2X Amplitude. Defined as one of the following: RMS Velocity, Peak Velocity, peak-to-peak Displacement, Band-pass peak Velocity, Bandpass, or Peak-to-peak

Displacement

Additionally, 1X Phase, 2X Phase and Bias Voltage, Shaft Absolute, Radial Vibration and Shaft Absolute, Velocity Direct, Gap, 1X Amplitude, 1X Phase Lag

Circular Acceptance Region

Direct, Gap, 1X Amplitude, 1X Phase Lag, 1X Circular, Acceptance Radius, 2X Amplitude, 2X Phase Lag, 2X Circular Acceptance Radius

The most extensive range of GE and Bently Nevada components may be found at World of Controls. At any time, our pros are here to assist you with your Bently Nevada needs. Please contact WOC right away if you require any additional information.

 

Frequently Asked Questions

 

What is 3500/42M?
3500/42M is a Proximitor Seismic Monitor component developed by Bently Nevada.

What is the output impedance of 3500/42M?
The output impedance of the module is 550 ohms.

What does the TX/RX LED on 3500/42M indicate?
It indicates whether or not the component is connecting with other 3500 rack modules.

How much is the operating temperature range of 3500/42M?
-30 degrees celsius to +65 degrees celsius is the operating temperature range.

What are the dimensions of 3500/42M monitor module?
241.3 mm x 24.4 mm x 241.8 mm are the main board dimensions.