BENTLY 125720-01 Keyphasor I/O Module
The
BENTLY 125720-01 is a dual-channel Keyphasor I/O module designed for BENTLY Nevada’s
3500 Machinery Protection System, delivering precise phase reference signals for rotating machinery. As part of the
3500/25 Enhanced Keyphasor Module series, it converts analog signals from proximity probes or magnetic pickups into digital outputs, enabling accurate shaft speed measurement, vibration phase analysis (e.g., 1x amplitude and phase), and system synchronization. With modular scalability and redundant capabilities, the
BENTLY 125720-01 ensures reliable operation in critical applications such as turbines, compressors, and generators across energy, petrochemical, and manufacturing industries.
Parameter |
Specification |
Model |
125720-01 |
Series |
3500/25 Enhanced Keyphasor Module |
Input Signal Types |
Proximity probe or magnetic pickup signals |
Channels |
2 channels (expandable to 8 channels via paired configuration) |
Voltage Range |
18–36 V DC (module power) |
Operating Temperature |
0°C to +65°C |
Storage Temperature |
-40°C to +85°C |
Dimensions |
24.2 cm × 11.2 cm × 2.5 cm |
Weight |
0.38 kg |
Compatibility |
BENTLY 3500 racks (requires 3500/15 power module) |

- Dual-Channel Redundancy: Ensures continuous operation in safety-critical systems.
- Scalability: Supports up to 8 channels when paired with additional modules, reducing rack space.
- Compact Design: Half-height modular form factor saves 30% more space than legacy models.
- Real-Time Phase Analysis: Enables early detection of misalignment or bearing wear.
- Backward Compatibility: Interchangeable with earlier Keyphasor modules (e.g., 125792-01).
Case Study: A Middle Eastern power plant reduced turbine downtime by 15% using the BENTLY 125720-01 to synchronize phase measurements during startup.
Industries:
- Energy: Gas turbines, steam turbines, and generators.
- Petrochemicals: Centrifugal compressors and pumps.
- Manufacturing: High-speed spindles and conveyor systems.
Case Study: A German automotive plant deployed the BENTLY 125720-01 to monitor engine test stands. By analyzing phase data, it identified rotational imbalances, improving product quality by 25%.
The BENTLY 125720-01 outperforms standard Keyphasor modules with:
- Higher Channel Density: Supports 8 channels in a single rack slot.
- Enhanced Signal Conditioning: Reduces noise interference by 40% compared to generic solutions.
- Proprietary Integration: Optimized for BENTLY’s 3500 system, ensuring seamless compatibility.

- System Compatibility: Confirm rack type (3500 series) and power supply requirements.
- Redundancy Needs: Pair modules for 2-out-of-2 configurations in safety-critical applications.
- Future Expansion: Consider scalability for multi-unit installations.
- Installation: Install paired modules in consecutive rack slots to ensure signal synchronization.
- Environmental Conditions: Avoid exposure to dust, moisture, or extreme temperatures.
- Firmware Updates: Regularly update firmware using BENTLY’s configuration software for optimal performance.
山西鑫业达国际贸易有限公司 is your trusted partner for
BENTLY 125720-01 and other automation spare parts. Visit
www.xydcontrol.com or contact us for sales and technical support.