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Bently Nevada 3500/50 133388-02+133442-01 Tachometer Module
Manufacturer: Bently Nevada
Product Number: 3500/50 (133388-02, 133442-01)
Category: Dual-Channel Tachometer Module
Number of Channels: 2
Series: 3500 Machinery Protection System
Application: Accurate real-time monitoring of speed and phase for critical rotating machinery
Product Description
The Bently Nevada 3500/50 Tachometer Module (133388-02 + 133442-01) is a dual-channel speed and phase measurement module designed for use within the Bently Nevada 3500 Machinery Protection System.
This module provides accurate real-time monitoring of rotational speed, phase reference, and acceleration for a wide range of rotating equipment, including turbines, compressors, pumps, and motors.
The front module (3500/50) and rear I/O module (133442-01) work together as a complete unit, delivering precise measurements and protection functions for critical machinery.
It accepts input from magnetic pickups, proximity probes, or TTL-type sensors, processes these signals, and outputs data to the 3500 rack for machine protection and control functions.
Key Features
-
Two independent, fully configurable tachometer channels.
-
Measures rotational speed (RPM), phase angle, and acceleration.
-
Compatible with Bently Nevada Keyphasor® and standard magnetic or proximity sensors.
-
Programmable Alert and Danger alarm thresholds.
-
Wide speed measurement range suitable for slow and high-speed machinery.
-
Modular front and rear design for quick maintenance and replacement.
-
High noise immunity and signal conditioning for harsh environments.
-
Continuous online monitoring with system integration through the 3500 rack.
Technical Specifications
| Parameter | Specification | Description |
|---|---|---|
| Model Number | 3500/50 (133388-02 + 133442-01) | Dual-channel Tachometer Module with rear I/O |
| Function | Measures rotational speed, phase, and acceleration | Provides protection and control data |
| Number of Channels | 2 channels | Configurable individually as speed or phase monitors |
| Input Type | Magnetic pickup, proximity probe, or TTL signal | Compatible with Keyphasor® sensors |
| Input Signal Range | −24 V to +24 V peak | AC or DC coupled |
| Input Frequency Range | 0.016 Hz to 20 kHz | Supports very low and high-speed machinery |
| Input Impedance | 10 kΩ nominal | Optimized for sensor signal integrity |
| Speed Measurement Range | 1 to 20,000 RPM typical | Configurable for machine application |
| Measurement Accuracy | ±0.01 % of measured speed | High precision for protective systems |
| Phase Measurement Range | 0° to 359.9° | Used for phase and order analysis |
| Alert / Danger Setpoints | Programmable per channel | Provides speed and phase protection thresholds |
| Outputs | 4–20 mA, relay trip, and digital communication | Interfaces with 3500 rack and control systems |
| Power Consumption | Approx. 6.5 W | Typical per module |
| Operating Temperature | −30 °C to +65 °C | Rated for industrial operating conditions |
| Storage Temperature | −40 °C to +85 °C | Non-operating environmental range |
| Rack Requirement | One front slot + one rear I/O slot | Standard 3500 rack configuration |
| Dimensions (H × W × D) | 241.3 mm × 24.4 mm × 163.1 mm (9.50 in × 0.96 in × 6.42 in) | Standard Bently Nevada module size |
| Weight | Approx. 0.46 kg (1.01 lb) | Lightweight aluminum construction |
| Housing Material | Anodized aluminum alloy | Provides EMI/RFI protection and mechanical strength |
| Compliance | CE, CSA, ATEX | Meets international standards for industrial applications |
| Country of Origin | United States–Minden, Nevada (USA) | Manufactured by Bently Nevada, Baker Hughes |
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Bently Nevada 3500/50 133388-02+133442-01 Tachometer Module
Manufacturer: Bently Nevada
Product Number: 3500/50 (133388-02, 133442-01)
Category: Dual-Channel Tachometer Module
Number of Channels: 2
Series: 3500 Machinery Protection System
Application: Accurate real-time monitoring of speed and phase for critical rotating machinery
Product Description
The Bently Nevada 3500/50 Tachometer Module (133388-02 + 133442-01) is a dual-channel speed and phase measurement module designed for use within the Bently Nevada 3500 Machinery Protection System.
This module provides accurate real-time monitoring of rotational speed, phase reference, and acceleration for a wide range of rotating equipment, including turbines, compressors, pumps, and motors.
The front module (3500/50) and rear I/O module (133442-01) work together as a complete unit, delivering precise measurements and protection functions for critical machinery.
It accepts input from magnetic pickups, proximity probes, or TTL-type sensors, processes these signals, and outputs data to the 3500 rack for machine protection and control functions.
Key Features
-
Two independent, fully configurable tachometer channels.
-
Measures rotational speed (RPM), phase angle, and acceleration.
-
Compatible with Bently Nevada Keyphasor® and standard magnetic or proximity sensors.
-
Programmable Alert and Danger alarm thresholds.
-
Wide speed measurement range suitable for slow and high-speed machinery.
-
Modular front and rear design for quick maintenance and replacement.
-
High noise immunity and signal conditioning for harsh environments.
-
Continuous online monitoring with system integration through the 3500 rack.
Technical Specifications
| Parameter | Specification | Description |
|---|---|---|
| Model Number | 3500/50 (133388-02 + 133442-01) | Dual-channel Tachometer Module with rear I/O |
| Function | Measures rotational speed, phase, and acceleration | Provides protection and control data |
| Number of Channels | 2 channels | Configurable individually as speed or phase monitors |
| Input Type | Magnetic pickup, proximity probe, or TTL signal | Compatible with Keyphasor® sensors |
| Input Signal Range | −24 V to +24 V peak | AC or DC coupled |
| Input Frequency Range | 0.016 Hz to 20 kHz | Supports very low and high-speed machinery |
| Input Impedance | 10 kΩ nominal | Optimized for sensor signal integrity |
| Speed Measurement Range | 1 to 20,000 RPM typical | Configurable for machine application |
| Measurement Accuracy | ±0.01 % of measured speed | High precision for protective systems |
| Phase Measurement Range | 0° to 359.9° | Used for phase and order analysis |
| Alert / Danger Setpoints | Programmable per channel | Provides speed and phase protection thresholds |
| Outputs | 4–20 mA, relay trip, and digital communication | Interfaces with 3500 rack and control systems |
| Power Consumption | Approx. 6.5 W | Typical per module |
| Operating Temperature | −30 °C to +65 °C | Rated for industrial operating conditions |
| Storage Temperature | −40 °C to +85 °C | Non-operating environmental range |
| Rack Requirement | One front slot + one rear I/O slot | Standard 3500 rack configuration |
| Dimensions (H × W × D) | 241.3 mm × 24.4 mm × 163.1 mm (9.50 in × 0.96 in × 6.42 in) | Standard Bently Nevada module size |
| Weight | Approx. 0.46 kg (1.01 lb) | Lightweight aluminum construction |
| Housing Material | Anodized aluminum alloy | Provides EMI/RFI protection and mechanical strength |
| Compliance | CE, CSA, ATEX | Meets international standards for industrial applications |
| Country of Origin | United States–Minden, Nevada (USA) | Manufactured by Bently Nevada, Baker Hughes |
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