Application Scenarios
In a power generation plant, critical turbine generator sets and boiler feed pumps operate continuously under high load. A single bearing failure can trigger cascading damage and force an unplanned outage costing hundreds of thousands of dollars per day. Maintenance teams need early warning of bearing degradation, misalignment, or rotor imbalance before vibration levels escalate to destructive thresholds.
The ENTEK 6622LS addresses this by monitoring two independent measurement points simultaneously—such as drive-end and non-drive-end bearings on the same machine. When vibration amplitude shifts beyond configured alert levels, the module signals the control system, allowing operators to schedule inspection during the next planned maintenance window rather than reacting to a catastrophic failure. Its wide frequency response captures both low-frequency shaft issues and high-frequency bearing defect signatures.
Parameter
| Main Parameters | Value / Description |
|---|---|
| Product Model | 6622LS |
| Manufacturer | ENTEK |
| Product Category | Dual Channel Vibration Monitor |
| Channel Capacity | 2 independent channels |
| Sensor Compatibility | Accelerometer, Velocity, Proximity |
| Frequency Range | 1 Hz to 2 kHz (typical) |
| Accuracy | ±1% to ±2% Full Scale |
| Output Signal | 4-20 mA / RS485 Modbus RTU |
| Power Supply | 12-24 VDC (9-36 VDC range) |
| Operating Temperature | -40°C to +85°C |
| Protection Rating | IP65 / IP67 (varies by configuration) |
| Mounting | Panel or DIN rail |
| Alarm Levels | 3 programmable thresholds |
Parameter notes
- Dual channel independence: Each channel can be configured with different sensor types and alarm setpoints, allowing one module to monitor two dissimilar machine components.
- RS485 Modbus RTU: Enables direct integration into PLC, DCS, or SCADA networks without external signal conditioning.
- Wide temperature range: -40°C to +85°C supports installation in outdoor pump houses, compressor shelters, and unheated equipment enclosures.
Technical Principles and Innovative Values
- Innovation Point 1: Dual-channel density in a single module. The 6622LS consolidates two complete vibration monitoring channels into one compact unit. For plants with dozens of monitored machines, this halves the rack space, wiring, and power distribution required compared to single-channel alternatives.
- Innovation Point 2: Multi-sensor compatibility with intelligent signal processing. The module accepts accelerometer, velocity, and proximity probe inputs without hardware modification. Internal signal processing adapts to the connected sensor type, automatically applying appropriate filtering and integration to deliver meaningful vibration parameters in acceleration, velocity, or displacement units.
- Innovation Point 3: FFT spectral analysis capability. Advanced versions of the 6622LS incorporate Fast Fourier Transform analysis, converting raw time-domain vibration data into frequency spectra. This allows maintenance engineers to distinguish between imbalance (1× running speed), misalignment (2×), and bearing defects (high-frequency envelope), guiding precise corrective action rather than trial-and-error repairs.
