Product Core Brief
- Model: 177230-01-02-05
- Brand: Bently Nevada
- Series: 177230 Integrated Transmitter
- Core Function: Measures bearing housing vibration and outputs a standard analog signal.
- Product Type: Seismic Vibration Transmitter
- Key Specs: 4-20mA Output | Loop Powered | IP65/NEMA 4X
- Condition: New Original / New Surplus
Product Introduction
The Bently 177230-01-02-05 serves as an integrated seismic vibration transmitter. This industrial automation unit directly measures casing vibration on rotating machinery.
This replacement module features a simple loop-powered design for easy installation. It outputs a continuous 4-20mA signal for direct DCS integration.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Module Type | Integrated Seismic Transmitter |
| Output Signal | 4-20 mA (Loop Powered) |
| Measurement Type | Casing Vibration (Velocity/Displacement) |
| Operating Temp | -40°C to +85°C |
| Mounting Style | Threaded / Flange |
| Protection Rating | IP65 / NEMA 4X |
| Primary Application | Balance of Plant Machinery |
| Dimensions | Compact 45mm Profile |
| Compliance | Industrial Standard Transmitter |
| Power Supply | 10-30 VDC (Loop Powered) |
BENTLY 177230-01-01-05
Quality Control Process
Every replacement module undergoes strict electrical validation. We first verify the 4-20mA output using a precision Fluke multimeter. Signal linearity must remain within ±1% tolerance. Next, we perform a dynamic shaker test to confirm sensor accuracy. Deviations in frequency response trigger immediate rejection. We then inspect the threaded housing for corrosion. Finally, we verify the IP65 sealing gasket integrity. All units ship in anti-static shielding.
Replacement Pitfall Guide
❗ Verify Mounting Surface. This seismic transmitter must be mounted on a clean, flat, and rigid bearing housing surface. Mounting on painted, corroded, or flexible surfaces will severely attenuate the vibration signal.
❗ Check Loop Power Supply. This unit is strictly loop-powered. Ensure your DCS or PLC input card provides adequate voltage (typically 10-30 VDC). Insufficient loop voltage will cause the 4-20mA signal to drop out.
❗ Confirm Measurement Scale. The 177230 series can be configured for different vibration scales (e.g., mm/s RMS or mils peak-to-peak). Verify the scaling matches your control system configuration before installation.
❗ Mind the Grounding Loop. Since this is a grounded metal housing, ensure the mounting stud is properly isolated or grounded according to site standards. Ground loops can inject 60Hz hum into your 4-20mA signal.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| 177230-01-02-05 | 177230-01-02-05 | Direct | Identical electrical specs |
| 177230-01-02-05 | 177230-01-01-05 | Direct | Minor mechanical variant, verify threads |
| 177230-01-02-05 | 177230-01-02-CN | Direct | CN suffix, identical core specs |
- Signal Accuracy: 4-20mA output linear to within ±1% of span.
- Frequency Response: Optimized for 10 Hz to 1,000 Hz casing vibration.
