EPRO CON021/916-160 Eddy Current Signal Converter for Critical Machinery Monitoring
This little workhorse converts raw eddy current probe signals into stable 4-20mA outputs for vibration monitoring systems. You’ll find it handling shaft position and vibration measurements on turbines, compressors, and pumps where millisecond-level accuracy matters. Honestly? It’s the kind of component you forget about until you realize it’s been running flawlessly for 8 years straight in that dusty corner of your plant.
| Brand | Bently Nevada (EPRO) |
| Supply Voltage | -23V to -32V DC (negative rail – watch your wiring!) |
| Linearity | ≤ ±1.5% full scale (holds up even at 70°C ambient) |
| Air Gap | 2.7 mm center point (±0.8mm adjustment range) |
| Measurement Range | Static: ±2.0 mm | Dynamic: 0-1000μm peak-to-peak |
| Weight/Size | 160g | 85 x 45 x 22 mm (DIN-rail mount) |
Where You’ll Actually Use This Thing
We’ve got these humming inside Bently Nevada 3300 and 3500 systems across refineries and power plants. Last month a client in Houston called saying it replaced a failing converter on their critical compressor skid – saved them a $200k unplanned shutdown. Pairs perfectly with 330100 series probes and 3500/42M rack modules. If you’re running legacy systems like 1769 or even older 1900 frames, this converter slips right in without rewiring headaches. Personally, I’ve seen it bolted onto everything from GE Frame 6 gas turbines to paper mill calenders where vibration monitoring is non-negotiable.
Why It Outlasts the Competition
That negative voltage supply? It’s not a typo – Bently Nevada systems run inverted rails to reduce noise interference in high-EMF environments. The converter’s analog circuitry stays dead-nuts accurate even when your plant’s summer temps hit 55°C (tried-and-tested in Gulf Coast facilities). What really sets it apart is how it handles probe drift – instead of throwing false alarms during thermal expansion cycles, it auto-compensates within its 2.7mm air gap window. One refinery maintenance guy told me: “Saved us constant recalibration on our sour gas compressors.” Not bad for a 160g module. Oh, and it plays nice with GE Bently Nevada 3500/44M racks and integrates cleanly into legacy 3300 frames without proprietary gateways.
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