The Bently Nevada 288062-02 is a 2-channel Tachometer Module from the 3500 Machinery Protection System, designed to measure shaft rotational speed, rotor acceleration, and rotor direction. The module also supplies conditioned Keyphasor® signals to the 3500 rack backplane, eliminating the need for a separate Keyphasor module in many configurations.
Item No :
288062-02Order(MOQ) :
1 PiecePayment :
EXWProduct Origin :
USAShipping Port :
WuhanLead Time :
3~5 daysWeight :
3kg| Specification | Description |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model | 3500/50M-01-00 |
| Main Board Part Number | 288062-02 |
| I/O Module Part Number | 133442-01 (Internal Terminations) |
| Product Family | 3500 Machinery Protection System |
| Product Type | Tachometer Module (2-Channel) |
| Input Channels | 2 independent channels |
| Input Signal Range | +10.0 V to -24.0 V |
| Input Impedance | 20 kΩ (Standard); 40 kΩ (TMR); 7.15 kΩ (Internal Barrier) |
| Input Sources | Proximity probes or magnetic pickups |
| Maximum Full Scale Range | 99,999 rpm |
| Maximum Input Frequency | 20 kHz |
| RPM Accuracy | <100 rpm: ±0.1 rpm; 100–10,000 rpm: ±1 rpm; 10,000–99,999 rpm: ±0.01% of true speed |
| Recorder Output | +4 to +20 mA per channel, proportional to full scale |
| Recorder Load | 0 to 600 Ω |
| Recorder Update Rate | 100 ms |
| Transducer Power Supply | 24 Vdc, 40 mA max per channel |
| Power Consumption | 5.8 W typical |
| Configuration Options | Speed monitoring, setpoint alarms, speed band alarms, zero speed notification, rotor acceleration alarms, reverse rotation notification |
| Peak Hold Feature | Stores highest speed, highest reverse speed, or reverse rotation count |
| Rack Position | 1 full-height front slot + 1 full-height rear I/O slot |
| Operating Temperature | -30°C to +65°C |
| Storage Temperature | -40°C to +85°C |
| Weight (Total Assembly) | Approx. 1.02 kg |
| Country of Origin | USA |
Part Number Breakdown (3500/50M-01-00):
| Segment | Value | Meaning |
|---|---|---|
| 3500/50M | Base model | Tachometer Module (M-series, enhanced) |
| -01 | I/O Module Type | I/O Module with Internal Terminations |
| -00 | Agency Approval | No hazardous area approvals required |
Kit Contents: Main board (288062-02) + Internal Termination I/O Module (133442-01)
| Model | Description | Typical Application |
|---|---|---|
| 3500/50M-01-00 (this model) | 2-channel Tachometer Module, internal terminations, no approvals | Standard speed monitoring with internal wiring |
| 3500/50M-01-01 | Same with cNRTLus approval (Class 1, Div 2) | North American hazardous area installations |
| 3500/50M-02-00 | External terminations version | Applications requiring remote termination |
| 3500/53 | Overspeed Protection Module | Dedicated overspeed trip – required for ETS applications |
| 133442-01 | I/O Module with Internal Terminations (spare) | Replacement I/O module |
| 288062-02 | Tachometer Module Main Board (spare) | Replacement main board |
| 3500/25 | Enhanced Keyphasor Module | Dedicated Keyphasor signal processing (when not using 50M Keyphasor output) |
| 3500/40M | Proximitor/Seismic Monitor | Vibration monitoring companion in 3500 rack |
Q1: What is the primary function of the 3500/50M-01-00?
It is a 2-channel Tachometer Module that measures shaft rotational speed, rotor acceleration, and rotor direction from proximity probes or magnetic pickups. It compares measurements against user-programmable alarm setpoints and can supply conditioned Keyphasor signals to the 3500 rack backplane .
Q2: Can the 3500/50M be used for overspeed protection?
No. Bently Nevada explicitly warns that the 3500/50M must not be used as a component of a speed control or overspeed protection system. It lacks the redundancy and response speed required for safety-critical overspeed trips. For overspeed protection, the 3500/53 module or 141539-01 Overspeed Protection System is required .
Q3: What does the "-01" and "-00" suffix mean?
The -01 indicates I/O Module with Internal Terminations (field wiring connects inside the rack via the 133442-01 I/O module) . The -00 indicates no hazardous area agency approvals are included . For hazardous area installations, use -01 or -02 approval suffix .
Q4: What configuration options are available?
The module supports: Speed Monitoring with Setpoint Alarming, Speed Band Alarming, Zero Speed Notification, Rotor Acceleration Alarming, and Reverse Rotation Notification . Configuration is performed using the 3500 Rack Configuration software.
Q5: What is the difference between the 3500/50 and 3500/50M?
The "M" designation indicates M-series (enhanced) capabilities, including better integration with Bently Nevada's System 1 diagnostic platform and improved internal processing for higher frequency inputs . The standard 3500/50 lacks these enhanced features.
The Bently Nevada 330105-02-12-05-02-00 is an 8 mm reverse-mount proximity probe from the 3300 XL series, engineered for non-contact vibration and position monitoring in space-constrained machinery.
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The Bently Nevada 21000-00-00-15-030-04-00 is a Proximity Probe Housing Assembly from the 21000 series, designed to provide a secure, environmentally sealed mounting interface for reverse-mount proximity probes on critical rotating machinery.
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The Bently Nevada 21747-040-00 is a 4-meter Proximitor probe extension cable designed for the 3300 and 7200 Series Proximity Transducer Systems. It connects a proximity probe to its Proximitor sensor, transmitting high-frequency eddy-current displacement signals for vibration and shaft position monitoring on critical rotating machinery.
The Bently Nevada 330710-00-060-10-02-00 is a 3300 XL 11 mm Proximity Probe designed for non-contact vibration and position measurement on large, fluid-film bearing machinery. Its 11 mm tip provides a longer linear range compared to the standard 8 mm system, making it ideal for applications requiring greater measurement span, such as axial thrust position, differential expansion, and radial vibration on steam turbines, centrifugal compressors, and large pumps.
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The Bently Nevada 990-10-XX-01-00 (MOD 165353-01) is a two-wire, loop-powered Vibration Transmitter designed for OEMs of centrifugal air compressors, small pumps, motors, and fans. It accepts input from a 3300 NSv proximity probe and its matching extension cable, conditioning the signal into a 4–20 mA output proportional to peak-to-peak vibration amplitude.
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