Description
Product Introduction
⚙️ Product: 3500/25
🏷️ Part Number: 149369-01
🔧 Brand: BENTLY NEVADA
🛡️ Product Type: Enhanced Keyphasor Module
The BENTLY NEVADA 3500/25 149369-01 is a half-height, two-channel Enhanced Keyphasor Module for the 3500 Machinery Protection System. It receives signals from proximity probes or magnetic pickups and converts them into digital Keyphasor signals for the 3500 monitor modules.
🔄 Keyphasor signals provide precise shaft rotational timing. The 3500 system uses these signals for shaft speed, phase, tracking filter, 1X vibration amplitude, and other machinery monitoring measurements. A standard 3500 rack can support up to four Keyphasor transducers using two 3500/25 modules.
🛠️ The 149369-01 is the updated Enhanced Keyphasor design and is specified as a direct plug-in replacement for the earlier 125792-01 Keyphasor Module, providing backward compatibility in form, fit, and function for legacy applications.
Product Datasheet
🔹 Model: 3500/25
🔹 Part Number: 149369-01
🔹 Brand: BENTLY NEVADA
🔹 Product Type: Enhanced Keyphasor Module
🔹 Number of Channels: 2
🔹 Input Signal: Proximity Probe or Magnetic Pickup
🔹 Input Frequency Range: 0.017 Hz to 20 kHz, configuration dependent
🔹 Keyphasor Output: Digital Keyphasor Signal
🔹 Buffered Outputs: Front and rear rack outputs
🔹 Operating Temperature: -30°C to +65°C, configuration dependent
🔹 Storage Temperature: -40°C to +85°C
🔹 Module Dimensions: Approx. 119.9 × 24.4 × 256.5 mm
🔹 Module Weight: Approx. 0.34 kg
🔹 Mounting: 3500 Rack, Half-Height Slot
🔹 Country of Origin: USA
The physical dimensions and 0.34 kg module weight are specified in the 3500/25 documentation. Environmental limits depend on the selected Keyphasor I/O module configuration.
Typical Applications
⚡ Steam and gas turbine monitoring
🏭 Industrial rotating machinery
🛢️ Oil and gas compressors
⚙️ Pumps, motors, and generators
📊 Shaft speed and phase measurement
🛡️ Machinery protection systems
🔄 BENTLY NEVADA 3500 system replacement and expansion
Installation & Use
🛠️ Before installation, verify the 149369-01 module, Keyphasor I/O module type, probe or magnetic pickup type, rack slot position, and existing 3500 configuration.
🔌 Power down the rack before installing or removing the module. Check the transducer wiring and connector condition, then install the half-height module in the designated 3500 rack position.
📊 After startup, verify the module status, Keyphasor input signal, shaft speed, phase reference, and communication with the 3500 monitor modules.
⚠️ For machinery protection applications, perform a complete Keyphasor signal and protection-system functional test before returning the equipment to service.
