3500/42M Channel monitor

Description

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:

3500/42M