Brand: Bently Nevada Description: I/O Module Signal and Record Terminal Condition: Brand New Certificate: COO TEST REPORT WARRANTY LETTER Warranty: 1 year Inventory Qty: 4 Payment Term: T/T Shipping Port: Shenzhen Bently Nevada 81544-01 is used to connect the proximity probe with the monitor to realize the real-time measurement of the axial thermal expansion difference between the rotor and casing of rotating machinery. The dual-channel design allows simultaneous monitoring of the magnitude and direction of the differential expansion and provides multi-level alarm outputs.
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Manufacture |
Bently Nevada |
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Model Number |
81544-01 |
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Ordering Number |
81544-01 |
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Catalog |
- |
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Country Of Origin |
United States (US) |
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HS CODE |
8538900000 |
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Dimension |
28*14*8cm |
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Weight |
2kg |
Product Features
Bently Nevada 81544-01 supports 2 proximity probe signal inputs to independently monitor the magnitude and direction of differential expansion.
Bently Nevada 81544-01 provides 4 configurable alarm setpoints per channel (2 high alarms and 2 low alarms), and supports relay outputs when thresholds are exceeded.
Bently Nevada 81544-01 has an input impedance of 10kΩ, compatible with Bently Nevada standard proximity probes, and the signal is output to the monitor after filtering and linearization.
Bently Nevada 81544-01 has a built-in self-diagnostic circuit that detects faults such as broken wires and short circuits, and provides feedback through status indicators.
Product Parameter
The proximity probe generates eddy currents on the metal surface of the rotor by means of a high-frequency electromagnetic field. Changes in the distance between the probe and the rotor surface result in changes in the coil impedance, which is converted into a voltage signal. Bently Nevada 81544-01 differential processing of the two probe signals calculates the relative expansion of the rotor and the casing, and thus determines the state of mechanical thermal deformation.
Input Signal: Compatible with 8mm or 5mm eddy current proximity probes, with a signal range of -20V to 0V (DC voltage).
Output Signal: 4-20mA analog signal (optional), relay contact output (alarm status).
Power Supply Requirements: Typically powered by a 3300 frame or an external 24V DC power supply (specific parameters refer to the official manual).
Accuracy: Linearity error ≤ ±1% of full scale, resolution 0.01mm.
Environmental Parameters: Operating temperature -40°C to +85°C, protection class IP65 (dustproof and waterproof).
Product Application
Bently Nevada 81544-01 monitors the thermal expansion difference between the rotor and cylinder during startup/stoppage to prevent friction between moving and static parts.
Bently Nevada 81544-01 can track the expansion difference between the impeller and the casing in real time under high-temperature working conditions to ensure axial clearance safety.
Bently Nevada 81544-01 can be used to monitor the expansion of rotor and stator of large generators to avoid winding insulation damage.
