METRIX TXA-33500 – Probe Trend Amplifier Module | Vibration Monitoring Platform
Engineering Background: The METRIX TXA-33500 is a precision probe trend amplifier module engineered for continuous machinery health monitoring in rotating equipment applications. Designed to interface directly with eddy-current proximity probes, it conditions raw probe signals into industry-standard 4–20 mA or voltage outputs suitable for DCS, PLC, and condition monitoring systems. METRIX (a brand under Bently Nevada / Baker Hughes ecosystem) has long been the benchmark for turbomachinery protection instrumentation.
Product Positioning: The TXA-33500 occupies the critical signal-conditioning layer between proximity probes and plant-level monitoring infrastructure. It is the preferred choice for procurement engineers specifying vibration trend channels on compressors, steam turbines, pumps, and gearboxes where continuous, drift-free analog output is mandatory for predictive maintenance programs.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Model | TXA-33500 |
| Manufacturer | METRIX Instrument Co. |
| Function | Probe Trend Amplifier / Signal Conditioner |
| Input Signal | Eddy-current proximity probe (compatible with 5 V / 24 V probe systems) |
| Output Signal | 4–20 mA (2-wire) / 0–10 V DC analog trend output |
| Measurement Range | Vibration displacement (configurable per probe gap range) |
| Power Supply | 18–30 V DC (loop-powered or external) |
| Operating Temperature | –40 °C to +85 °C |
| Enclosure / Housing | DIN-rail mountable module |
| Weight | 1,740 g (packaged) |
| Approvals | CE; consult datasheet for ATEX/IECEx options |
| Communication | Analog (4–20 mA / voltage); no fieldbus |
| Typical Probe Compatibility | METRIX 5000 / 7000 series proximity probes |
Note: Confirm exact electrical parameters against the official METRIX TXA-33500 datasheet before installation. Konmask.com supplies genuine and verified-equivalent units.
Proven Application Environments
- Steam & Gas Turbines – Continuous shaft vibration trending for API 670-compliant protection systems
- Centrifugal Compressors – Radial vibration monitoring on high-speed rotating shafts
- Pumps & Fans – Bearing housing vibration trend channels feeding SCADA/DCS historians
- Gearboxes – Gear mesh frequency trending via proximity probe arrays
- Petrochemical & Refinery Plants – Continuous process machinery health monitoring
- Power Generation – Generator rotor eccentricity and vibration trend acquisition
Engineering Advantages
- Direct Probe Interface – No intermediate oscillator/demodulator required; simplifies wiring architecture
- Stable 4–20 mA Output – Long-distance signal transmission to DCS/PLC without signal degradation
- Wide Supply Voltage Range – Tolerates plant power fluctuations (18–30 V DC)
- DIN-Rail Form Factor – Easy integration into existing marshalling cabinets
- Low Drift Design – Maintains calibration accuracy over extended operating cycles
- METRIX Ecosystem Compatibility – Plug-compatible with METRIX 5000/7000 probe series and ST5484E transmitter family
System Architecture & Signal Flow
The TXA-33500 sits at the signal-conditioning layer of a typical machinery protection architecture:
- Proximity Probe (METRIX 5000/7000 series) → senses shaft displacement
- TXA-33500 Amplifier Module → conditions probe output → 4–20 mA / 0–10 V trend signal
- DCS / PLC Analog Input Card → receives trend signal for historian logging
- Condition Monitoring Software (e.g., OSIsoft PI, AspenTech) → trend analysis & alarm management
This architecture ensures API 670 / ISO 13373 compliance for continuous vibration trend monitoring without requiring a dedicated vibration protection rack.
Sourcing & Quality Verification
- ✅ Genuine METRIX units sourced from authorized distribution channels
- ✅ Functional verification performed prior to shipment (output signal, power consumption)
- ✅ Original packaging with manufacturer labels and serial numbers preserved
- ✅ Traceability documentation available upon request (COC, test records)
- ✅ Export compliance – HS Code 9031.80 (precision measurement instruments); proper customs documentation provided
Procurement Process
- Confirm Model – Verify TXA-33500 against your existing probe system (gap voltage, output type)
- Request Quote – Contact support@konmask.com with quantity and delivery requirements
- Lead Time – Ex-stock or 2–4 weeks depending on quantity; expedite options available
- Payment & Shipping – T/T, L/C accepted; DHL / FedEx / sea freight per project requirement
- After-Sales – Technical support and warranty documentation provided with every shipment
Technical FAQ
Q: Is the TXA-33500 compatible with non-METRIX proximity probes?
A: The TXA-33500 is optimized for METRIX 5000/7000 series probes. Compatibility with third-party probes depends on output voltage range and sensitivity (mV/mil). Contact our engineers for cross-compatibility assessment.
Q: Can the TXA-33500 replace a Bently Nevada 3300 XL series module?
A: Functionally similar in signal conditioning role, but connector pinout and calibration differ. A direct drop-in replacement requires wiring adaptation. Konmask engineers can advise on the retrofit procedure.
Q: What is the output accuracy of the TXA-33500?
A: Typically ±1% full scale over the operating temperature range. Refer to the official METRIX datasheet for guaranteed accuracy specifications.
Q: Is ATEX certification available?
A: Consult the METRIX product family documentation. Konmask can source ATEX-rated variants if required for Zone 1/2 hazardous area installations.
Q: What is the minimum order quantity?
A: No minimum order quantity. Single units and bulk orders are both accommodated.
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