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- Overview
- Specifications
- Description
- Applications
- Maintenance and Troubleshooting
- FAQ
- Recommended Products
Overview
Place of Origin: |
USA |
Brand Name: |
Bently Nevada |
Model Number: |
3500/25 149369-01+125800-01 |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
5-7 days |
Payment Terms: |
T/T |
Supply Ability: |
In stock |
Specifications
|
Product Name |
3500/25 149369-01 + 125800-01 |
|
Type |
Enhanced Keyphasor Module |
|
Dimensions |
2.5x25.5x12 cm |
|
Weight |
0.32 kg |
|
Power Consumption |
3.2 W (typical) |
|
Input Signal |
Up to two transducer signals (proximity probes or magnetic pickups); +0.8 V to -21.0 V (non-isolated) or +5 V to -11 V (isolated) |
|
Input Impedance |
21.8 kΩ minimum |
|
Buffered Outputs |
Two buffered Keyphasor outputs (front coaxial); two buffered outputs (rear Euro-style connectors) |
|
Output Impedance |
504 Ω maximum (buffered) |
|
Transducer Power Supply |
-24 V DC, 40 mA maximum per channel |
|
Operating Temperature |
-30°C to +65°C (standard); 0°C to +65°C (Internal Barrier I/O) |
|
Storage Temperature |
-40°C to +85°C |
|
Humidity |
95% non-condensing |
|
Front Panel LEDs |
OK LED (fault indication); TX/RX LED (communication with RIM) |
|
Rack Space Requirement |
Main module: 1 half-height front slot; I/O modules: 1 full-height rear slot |
|
Speed/Frequency Input Range |
1 to 1,200,000 cpm (0.017 to 20 kHz) |
|
Speed/Frequency Output Range |
1 to 99,999 cpm (0.017 to 1667 Hz) |
|
Speed Accuracy (Nonprocessed) |
0.017–100 Hz ±1 cpm; 101–500 Hz ±8 cpm; 501–20 kHz ±1% |
|
Speed Accuracy (Processed) |
0.017–60 Hz ±1 cpm; 61–150 Hz ±8 cpm; 151–20 kHz ±1% |
Description
The Bently Nevada 3500/25 149369-01+125800-01 is a high-performance, enhanced keyphase module designed to provide accurate speed and phase references for the 3500 monitoring system. This module receives sensor signals and converts them into critical phase reference data to support mechanical vibration analysis, order tracking, dynamic balancing, and automated protection interlocks.
Applications
Steel rolling mills: Monitor the precise speed and phase of large main drive shafts, providing core benchmark data for vibration characteristic analysis and dynamic balance correction of the rolling mill.
Coal power plants: Integrated into the turbine generator unit monitoring system, capturing key phase signals during unit start-up and shutdown (transient) phases to ensure the accuracy of order analysis.
Oil and gas refineries: Applied to high-speed centrifugal compressor units, utilizing their 20 kHz high-frequency processing capability to monitor the phase integrity of mechanical motion in real time.
Large fertilizer plants: Deployed in the ammonia synthesis compressor room, connecting key phase signals to on-site diagnostic instruments via the front panel buffer interface for troubleshooting without shutting down the machine.
Mining machinery plants: Operate within the monitoring framework of large crushers or hoists, utilizing their wide-temperature operating characteristics to ensure the reliability of speed monitoring in variable environments.
Maintenance and Troubleshooting
FAQ
Q: Why does the 3500/25 149369-01+125800-01 main module use a half-height design?
A: It optimizes rack space, enabling redundant installation of power supplies or modules within a single slot.
Q: What is the voltage input range of the 3500/25 149369-01+125800-01 non-isolated I/O module?
A: It accepts +0.8 V to -21.0 V, matching standard eddy current sensor outputs.
Q: What is the function of the Buffered Signals interface on the 3500/25 149369-01+125800-01?
A: It outputs an isolated copy of the signal for external diagnostics without affecting system operation.
Q: What is the maximum supported speed frequency of the 3500/25 149369-01+125800-01?
A: Up to 1,200,000 cpm (~20 kHz), suitable for ultra-high-speed machinery.
Q: Does the 3500/25 149369-01+125800-01 require preheating in -30°C environments?
A: No. It supports direct startup and maintains accuracy from -30°C to +65°C.
