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Product In-Depth Introduction
Integrating vibration monitoring into a standard DCS or PLC system can be a wiring nightmare if you don’t use the right hardware. The Metrix 5533-104 solves this by acting as a bridge between your proximity probes and the control room. Instead of running expensive coaxial cables all the way to the rack, this transmitter sits right at the machine, converting the raw eddy current signal into a standard 4-20mA loop. It is a compact, robust solution that simplifies the architecture significantly.The beauty of the 5533-104 lies in its simplicity and reliability. It is loop-powered, meaning it draws energy directly from the monitoring card—no separate power supply cabinets are needed. This reduces panel space and wiring costs. From a maintenance perspective, it is a “set and forget” device. Once calibrated to the correct vibration range (e.g., 0-500 µm peak-to-peak), it provides a stable, linear output that helps operators catch bearing faults or unbalance before they cause a catastrophic shutdown.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | 5533-104 |
| Input Signal | Proximity Probe (Eddy Current) |
| Output Signal | 4-20mA proportional to vibration amplitude |
| Power Supply | 2-Wire Loop Powered (17.5 to 30 VDC) |
| Frequency Response | 2 Hz to 10,000 Hz (Standard) |
| Hazardous Location | Class I, Division 2, Groups A, B, C, D |
| Temperature Range | -40°C to +85°C (Operating) |
| Load Impedance | 0 to 550 Ohms (at 24VDC) |
| Mounting | DIN Rail or Panel Mount |
| Certification | CSA, UL, ATEX (verify specific suffix) |
Installation & Wiring Guide
🛠️ Phase 1: Preparation (Est. Time: 20 mins)
- Safety First: Lock out/Tag out the equipment. Ensure the area is safe, especially if working in a hazardous zone.
- Tools: Precision screwdriver, Fluke multimeter, and a signal generator (optional for testing).
- Verify Range: Check the datasheet. You need to know the exact vibration range (e.g., 0-500 µm) that corresponds to the 4-20mA scaling.
🔧 Phase 2: Removing Old Unit (Est. Time: 15 mins)
- Label Wires: Do not skip this. Label the “Probe In,” “Loop +,” and “Loop -” wires clearly.
- Disconnect: Remove the loop wires first. Then disconnect the coaxial cable from the proximity probe.
- Inspect Cables: Check the coax cable shield. If it is frayed or corroded, repair it now—a bad shield causes noise that mimics vibration.
⚡ Phase 3: Installing Metrix 5533-104 (Est. Time: 20 mins)
- Mounting: Snap the new 5533-104 onto the DIN rail securely.
- Connect Probe: Attach the coaxial cable. Tighten the connector firmly but do not crush the dielectric.
- Loop Wiring: Connect the 4-20mA loop wires. Note: Polarity matters here. Reverse polarity results in 0mA output.
- Grounding: Ensure the transmitter ground is solid. This is critical for rejecting electrical noise.
✅ Phase 4: Commissioning (Est. Time: 30 mins)
- Power Up: Restore power to the loop.
- Check Current: With the machine stopped, the current should be at the “zero” value (usually 4mA).
- Simulate/Test: If possible, inject a known vibration value using a calibrator. Verify the DCS reads the correct engineering units.
- Final Check: Listen for buzzing (ground loops) and verify the “OK” LED status on the front panel.
