Product Introduction
When machinery vibration threatens uptime, the Bently Nevada 177230-00-01-CN Seismic Transmitter delivers precise, real-time data. This compact device converts vibration into a 4-20 mA current loop signal, ideal for integration with PLCs, DCS, and SCADA systems. Built with a hermetically sealed 316L stainless steel case, it withstands harsh industrial environments.
Technical Specifications Breakdown
The 177230-00-01-CN measures vibration velocity from 0 to 12.7 mm/s (0 to 0.5 in/s) full scale. Its frequency response spans 10 Hz to 1 kHz (600 to 60 kcpm) with ±10% accuracy. The output signal is proportional to RMS vibration levels, providing a linear 4-20 mA representation. Excitation voltage ranges from 12 to 30 Vdc, current-limited to 40 mA. The transmitter settles within 15 seconds to within 2% of final value, ensuring rapid response to changing conditions.
Industry Applications
From a maintenance engineer's perspective, this transmitter excels in rotating machinery monitoring—pumps, fans, compressors, and turbines. Its transverse sensitivity of less than 5% of sensitivity minimizes cross-axis errors, delivering reliable readings even in complex vibration fields. The 100% non-submerged relative humidity tolerance makes it suitable for damp environments like paper mills or offshore platforms.
Installation & Setup Guidance
Mount the 177230-00-01-CN using the 1/4-28 UNF hole or M6 x 1 / M8 x 1.25 SI threads. Apply a mounting torque of 4 to 7 N-m (35.4 to 62.0 in-lbf). Wire Pin A to the 4-20 mA positive loop, Pin B to the loop return, and Pin C for dynamic acceleration signal (unbuffered). Ensure the power supply is current-limited between 30 mA and 35 mA, typical for PLC/DCS systems.
Maintenance & Reliability
This transmitter requires minimal maintenance due to its hermetically sealed sensor and 316L stainless steel construction. The ceramic/shear sensing element offers long-term stability. Operating temperature range from -40°C to +85°C (-40°F to +185°F) ensures performance in extreme conditions. Electrical isolation exceeds 108 ohms, with a breakdown voltage of 600 Vrms. Periodic inspection of the connector and mounting integrity is recommended to maintain reliability.
Compatibility & Integration
The 4-20 mA output integrates directly with any analog input module on PLCs, DCS, and SCADA systems. The dynamic acceleration signal on Pin C provides additional diagnostic capability for advanced analysis. No special communication protocols are required—just a standard current loop.
Frequently Asked Questions
What is the full-scale range of the 177230-00-01-CN?
The full-scale range is 0 to 12.7 mm/s (0 to 0.5 in/s) RMS, with a 4-20 mA output representing 0 to full scale.
Can this transmitter be used in hazardous areas?
The provided data does not include hazardous area certifications. Verify with SpareTechPLC for specific approval requirements.
What is the mounting torque specification?
Apply 4 to 7 N-m (35.4 to 62.0 in-lbf) when mounting using the 1/4-28 UNF hole or M6/M8 threads.
How do I wire the 177230-00-01-CN?
Connect Pin A to the 4-20 mA positive loop, Pin B to the loop return, and Pin C for the dynamic acceleration signal. Pin B serves as common for the dynamic signal.
What is the weight of this transmitter?
The weight is 0.131 kg (4.62 oz), typical.
