Company Information
E-mail		[email protected]
Mobile		+8613666084105
Whatsapp		+8613666084105
WeChat		13666084105
Add		Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China

Product Introduction

The Bently Nevada 3500/25-01-01-00 Enhanced Keyphasor Module is a half-height, two-channel module designed to provide Keyphasor signals to the monitor modules in a 3500 rack. It receives input signals from proximity probes or magnetic pickups and converts them into digital Keyphasor signals. These signals indicate when the Keyphasor mark on the shaft coincides with the Keyphasor transducer, allowing for precise timing measurements essential for monitoring shaft rotative speed and vector parameters such as 1X vibration amplitude and phase.

---

Product Specifications

Parameter	Specification
Model Number	3500/25-01-01-00
Part Number	125800-01
Function	Enhanced Keyphasor Module
System Compatibility	Bently Nevada 3500 Series Rack
Number of Channels	Two-channel module
Input Signal Range	+0.8V to -21.0V (Non-isolated I/O modules); +5V to -11V (Isolated I/O modules)
Buffered Output Impedance	504Ω maximum
Power Consumption	3.2 Watts typical
Operating Temperature	–20°C to +65°C
Storage Temperature	–40°C to +85°C
Humidity Range	0% to 95% non-condensing
Dimensions (D x W x H)	241.3 x 24.4 x 103.1 mm
Weight	0.46 kg
Mounting	Plugs directly into the 3500 rack
Agency Approvals	CSA/NRTL/C (Class 1, Div 2)

 

---

Applications

• Machinery Condition Monitoring: Suitable for gas turbines, steam turbines, compressors, pumps, fans, and motors.

• Transient Data Acquisition: Captures and stores transient vibration events such as startups, shutdowns, trips, and other anomalies.

• Integration with System 1®: Seamless data streaming into Bently Nevada’s predictive analytics platform.

• Plantwide Monitoring Infrastructure: Acts as a centralized data gateway across multiple machinery systems.

• Diagnostics & Root Cause Analysis: Ideal for engineers seeking detailed, timestamped event data.

• Critical Asset Protection: Used across oil & gas, petrochemical, power generation, marine, and mining industries.​

---

Advantages

• Enhanced Signal Processing: Employs advanced signal processing algorithms for improved noise immunity and accuracy.

• Dual-Channel Capability: Processes signals from two proximity probes or magnetic pickups simultaneously.

• Compact Design: Fits into a standard 19-inch rack, optimizing space utilization.

• High-Precision Keyphasing: Accurately determines the rotational position of a shaft relative to a fixed reference point.

• Broad Compatibility: Supports a range of Proximitors and advanced monitoring systems, ideal for diverse industrial applications.​

---

Latest News Headlines

1. “Bently Nevada Introduces Enhanced Keyphasor Module for Improved Machinery Monitoring”

2. “New Developments in Keyphasor Technology Boost Rotating Equipment Analysis”

3. “Enhanced Keyphasor Module Receives CSA/NRTL/C Certification for Hazardous Locations”

4. “Bently Nevada’s 3500 Series Modules Gain Popularity in Power Generation Sector”

5. “Advancements in Keyphasor Signal Processing Enhance Predictive Maintenance Strategies”

---

Frequently Asked Questions (FAQ)

1. What exactly does the Enhanced Keyphasor Module do in the 3500 system?
The 3500/25 Enhanced Keyphasor Module serves a critical role by generating digital Keyphasor signals used to establish timing references for other modules within the Bently Nevada 3500 Series system. These signals are essential for performing speed measurements, phase tracking, and vector vibration analysis. It essentially converts analog pulses from proximity probes or magnetic pickups into a digital signal that pinpoints shaft rotational position, making it a fundamental part of any rotating equipment condition monitoring setup.

2. Can I install the 3500/25 module in any slot in the 3500 rack?
No, the module must be installed in designated slots according to Bently Nevada’s configuration rules. Typically, Keyphasor modules are installed in slot positions specifically intended for timing input, which are usually to the left of the first monitor module. Additionally, configuration in the 3500 software is mandatory to assign the Keyphasor logic properly, ensuring that the timing signals are routed to the correct modules.

3. What’s the advantage of using the Enhanced Keyphasor module over the standard version?
The “Enhanced” version of the Keyphasor module offers improved noise immunity, extended input signal ranges, and greater compatibility with various transducers. It also supports dual redundant outputs and faster signal response time, which enhances performance in high-speed rotating equipment where precision timing is vital. These enhancements make it especially suitable for critical applications like gas turbines or high-speed compressors.

4. Is the module compatible with all types of proximity probes?
The 3500/25 module is designed to be compatible with most Bently Nevada proximity probes (e.g., 3300 XL series). However, it is important to ensure that the probe and driver configuration is properly matched and calibrated. Certain custom or third-party sensors may not be fully compatible without signal conditioning or hardware modification, so always verify probe specifications against the module’s electrical input requirements.

5. What kind of input signals does this module accept?
The module can accept signals from both proximity probe systems and magnetic pickups. For proximity probes, it can handle signals in the range of approximately +0.8V to -21V for non-isolated configurations. For isolated input modules, it supports a narrower range (approximately +5V to -11V). This allows flexibility in the types of rotating assets being monitored.

6. How do I configure the Keyphasor module after installation?
Configuration is done via the Bently Nevada 3500 Rack Configuration Software. Users must define the number of channels, input source (proximity or magnetic), and the logic for zero crossing or pulse detection. Signal thresholds and channel assignments to monitors like 3500/42M or 3500/50 are also handled within the software. It’s important that the configuration be verified during commissioning to ensure all parameters are correctly assigned.

7. Does this module support redundant Keyphasor signals?
Yes. The module is equipped to support two independent channels, which can be used for redundancy or dual-signal tracking. This is particularly useful in applications where safety, high-speed rotation, or backup measurements are critical. When configured in redundant mode, it ensures continuous operation even if one input fails.

8. What is the recommended maintenance or calibration cycle for this module?
The module itself requires very little maintenance. However, calibration of the connected proximity probes should be performed periodically—typically every 1 to 2 years, depending on site environmental conditions and asset criticality. It’s also good practice to check signal integrity and system diagnostics through the 3500 System 1® software or via manual verification with an oscilloscope.

9. What is the environmental tolerance of the module? Can it handle extreme conditions?
The 3500/25 is designed for industrial environments. It operates in temperatures ranging from -20°C to +65°C and has a storage range from -40°C to +85°C. It can tolerate humidity levels up to 95% non-condensing. For hazardous environments, the module is certified Class 1, Division 2 (CSA/NRTL/C), making it suitable for most petrochemical or offshore applications.

10. How do I know if the module is functioning properly once installed?
The module features onboard LED indicators that show OK, TX/RX, and Channel status. Additionally, system diagnostics within the 3500 Monitoring Software or System 1® will display live status, errors, or configuration mismatches. These tools should always be used during system startup or periodic inspections to ensure the module is functioning as expected.

---

Related Models from the 3500 Series

Model Number	Description	Channels	Compatibility
3500/22M-01-01-01	Transient Data Interface Module	2	Works with 3500 System
3500/42M	Proximitor Seismic Monitor	4	Compatible with 3300 XL
3500/40M	Proximitor Monitor	4	For proximity transducers
3500/50	Tachometer Module	2	Requires Keyphasor input
3500/15	Power Supply Module	2	Supports full rack power
3500/60 & 3500/61	Temperature Monitors	6	RTD and Thermocouple input

Popular Bently Nevada Models

Model Number	Function	Highlights
3300 XL Proximitor®	Vibration & Displacement Monitoring	Industry-standard proximity system
3500/22M	Data Interface Module (TDI)	Enables communications & System 1 access
3500/94	Display Interface Module	Rack-mounted display for live data
330130-040-00	Proximity Probe	For shaft vibration monitoring
3500/05	System Rack	Holds all Bently Nevada modules
3500/93	LCD Display	Rack-level HMI for monitoring and config

 

Frequently Asked Questions (FAQ)

1. What exactly does the Enhanced Keyphasor Module do in the 3500 system?
The 3500/25 Enhanced Keyphasor Module serves a critical role by generating digital Keyphasor signals used to establish timing references for other modules within the Bently Nevada 3500 Series system. These signals are essential for performing speed measurements, phase tracking, and vector vibration analysis. It essentially converts analog pulses from proximity probes or magnetic pickups into a digital signal that pinpoints shaft rotational position, making it a fundamental part of any rotating equipment condition monitoring setup.

2. Can I install the 3500/25 module in any slot in the 3500 rack?
No, the module must be installed in designated slots according to Bently Nevada’s configuration rules. Typically, Keyphasor modules are installed in slot positions specifically intended for timing input, which are usually to the left of the first monitor module. Additionally, configuration in the 3500 software is mandatory to assign the Keyphasor logic properly, ensuring that the timing signals are routed to the correct modules.

3. What’s the advantage of using the Enhanced Keyphasor module over the standard version?
The “Enhanced” version of the Keyphasor module offers improved noise immunity, extended input signal ranges, and greater compatibility with various transducers. It also supports dual redundant outputs and faster signal response time, which enhances performance in high-speed rotating equipment where precision timing is vital. These enhancements make it especially suitable for critical applications like gas turbines or high-speed compressors.

4. Is the module compatible with all types of proximity probes?
The 3500/25 module is designed to be compatible with most Bently Nevada proximity probes (e.g., 3300 XL series). However, it is important to ensure that the probe and driver configuration is properly matched and calibrated. Certain custom or third-party sensors may not be fully compatible without signal conditioning or hardware modification, so always verify probe specifications against the module’s electrical input requirements.

5. What kind of input signals does this module accept?
The module can accept signals from both proximity probe systems and magnetic pickups. For proximity probes, it can handle signals in the range of approximately +0.8V to -21V for non-isolated configurations. For isolated input modules, it supports a narrower range (approximately +5V to -11V). This allows flexibility in the types of rotating assets being monitored.

6. How do I configure the Keyphasor module after installation?
Configuration is done via the Bently Nevada 3500 Rack Configuration Software. Users must define the number of channels, input source (proximity or magnetic), and the logic for zero crossing or pulse detection. Signal thresholds and channel assignments to monitors like 3500/42M or 3500/50 are also handled within the software. It’s important that the configuration be verified during commissioning to ensure all parameters are correctly assigned.

7. Does this module support redundant Keyphasor signals?
Yes. The module is equipped to support two independent channels, which can be used for redundancy or dual-signal tracking. This is particularly useful in applications where safety, high-speed rotation, or backup measurements are critical. When configured in redundant mode, it ensures continuous operation even if one input fails.

8. What is the recommended maintenance or calibration cycle for this module?
The module itself requires very little maintenance. However, calibration of the connected proximity probes should be performed periodically—typically every 1 to 2 years, depending on site environmental conditions and asset criticality. It’s also good practice to check signal integrity and system diagnostics through the 3500 System 1® software or via manual verification with an oscilloscope.

9. What is the environmental tolerance of the module? Can it handle extreme conditions?
The 3500/25 is designed for industrial environments. It operates in temperatures ranging from -20°C to +65°C and has a storage range from -40°C to +85°C. It can tolerate humidity levels up to 95% non-condensing. For hazardous environments, the module is certified Class 1, Division 2 (CSA/NRTL/C), making it suitable for most petrochemical or offshore applications.

10. How do I know if the module is functioning properly once installed?
The module features onboard LED indicators that show OK, TX/RX, and Channel status. Additionally, system diagnostics within the 3500 Monitoring Software or System 1® will display live status, errors, or configuration mismatches. These tools should always be used during system startup or periodic inspections to ensure the module is functioning as expected.

Related Models from the 3500 Series

Model Number	Description	Channels	Compatibility
3500/22M-01-01-01	Transient Data Interface Module	2	Works with 3500 System
3500/42M	Proximitor Seismic Monitor	4	Compatible with 3300 XL
3500/40M	Proximitor Monitor	4	For proximity transducers
3500/50	Tachometer Module	2	Requires Keyphasor input
3500/15	Power Supply Module	2	Supports full rack power
3500/60 & 3500/61	Temperature Monitors	6	RTD and Thermocouple input

Popular Bently Nevada Models

Model Number	Function	Highlights
3300 XL Proximitor®	Vibration & Displacement Monitoring	Industry-standard proximity system
3500/22M	Data Interface Module (TDI)	Enables communications & System 1 access
3500/94	Display Interface Module	Rack-mounted display for live data
330130-040-00	Proximity Probe	For shaft vibration monitoring
3500/05	System Rack	Holds all Bently Nevada modules
3500/93	LCD Display	Rack-level HMI for monitoring and config

 

Excellent PLC Co., Ltd. has a large number of brand new and original PLC and DCS spare parts, with more than 60 cooperative countries. All products are guaranteed for 1 year and delivered to you by high-quality express. We are committed to using the best products and the most favorable prices to meet the needs and friendship of our customers. We have won the trust of thousands of customers, including these excellent customers.

As for the delivery time, when we receive your order requirements, we will arrange for warehouse personnel to test and verify the products. After you place the order, we will send it to you within 24 hours.