Product Overview
The Bently Nevada 177230-01-01-CN is a precision Seismic Transmitter designed for continuous vibration monitoring in industrial rotating machinery. This Industrial Automation Module converts dynamic acceleration into a standard 4 to 20 mA current loop signal, making it directly compatible with PLC, DCS, and SCADA systems. Manufactured in the U.S.A., the 177230-01-01-CN delivers reliable, real-time vibration data to help you detect machine faults early and prevent unplanned downtime.
With a rugged 316L stainless steel case and hermetic sealing, this transmitter withstands harsh environments, including 100% non-submerged humidity. Its compact footprint—25.4 mm diameter and 66.0 mm height—allows easy installation in tight spaces on bearing housings or machine casings.
Technical Specifications
The 177230-01-01-CN provides a full-scale measurement range of 0 to 25.4 mm/s (0 to 1.0 in/s) RMS, with a frequency response of 10 Hz to 1 kHz (600 to 60 kcpm) ±10%. The output signal is proportional to RMS vibration levels, giving you a stable and accurate representation of machine condition.
| Parameter |
Value |
| Measurement Range |
0 – 25.4 mm/s (0 – 1.0 in/s) RMS |
| Frequency Response |
10 Hz to 1 kHz (600 to 60 kcpm) ±10% |
| Output Signal |
4 to 20 mA current loop |
| Excitation Voltage |
12 to 30 Vdc (current limited to 40 mA) |
| Settling Time |
Less than 15 seconds within 2% of final value |
| Mounted Resonant Frequency |
Greater than 12 kHz |
| Transverse Sensitivity |
Less than 5% of sensitivity |
| Sensing Element |
Ceramic / Shear |
| Operating Temperature |
-40°C to +85°C (-40°F to +185°F) |
| Electrical Isolation |
Greater than 10^8 ohms |
| Isolation Breakdown Voltage |
600 Vrms with less than 1 mA leakage current |
| Shock Survivability |
9.810 m/s² (1.000 g peak), maximum drop test |
| Magnetic Field Sensitivity |
Less than 20 μm/s/gauss (790 μin/s/gauss) peak; less than 14.7 mm/s²/gauss (150 μg/gauss) peak [based on 50 gauss, 50-60 Hz] |
| Case Material |
316L stainless steel |
| Connector |
3-pin MIL-C-5015, 316L stainless steel |
| Mounting Hole |
1/4-28 UNF |
| Mounting Threads |
M6 x 1 SI, M8 x 1.25 SI, ¼-28 UNF |
| Mounting Torque |
4 to 7 N-m (35.4 to 62.0 in-lbf) |
| Weight |
131 g (4.62 oz) typical |
| Relative Humidity |
To 100% non-submerged |
Key Features & Benefits
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Direct 4-20 mA output simplifies integration with existing control systems—no external signal conditioning required.
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Hermetically sealed sensor ensures long-term reliability in humid or dusty environments.
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316L stainless steel construction resists corrosion, ideal for chemical and marine applications.
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Wide operating temperature range from -40°C to +85°C suits extreme industrial conditions.
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Compact and lightweight design minimizes installation impact on machinery.
Industry Applications
The 177230-01-01-CN excels in predictive maintenance programs across many sectors. In pulp and paper mills, it monitors dryer rolls and refiner motors, helping you schedule maintenance before bearing failures cause costly shutdowns. In water treatment plants, it tracks pump vibration levels, ensuring continuous operation of critical process pumps. For petrochemical facilities, the transmitter’s stainless steel case withstands corrosive atmospheres while providing early warning of compressor or fan imbalance.
By converting vibration data into a standard analog signal, the 177230-01-01-CN feeds directly into your PLC or DCS, enabling automated alarms and trend analysis. This proactive approach reduces unplanned downtime and extends equipment life—delivering measurable ROI through lower maintenance costs.
Installation & Setup
Mount the 177230-01-01-CN using a 1/4-28 UNF threaded hole (or optional M6/M8 threads) on a flat, machined surface of the machine casing. Apply a mounting torque of 4 to 7 N-m (35.4 to 62.0 in-lbf) to ensure a secure and accurate reading. For optimal frequency response, avoid over-tightening or using excessive thread-locking compound.
Wire the 3-pin MIL-C-5015 connector as follows: Pin A connects to the 4-20 mA positive loop, Pin B is the loop return (negative), and Pin C provides an unbuffered dynamic acceleration signal referenced to Pin B. Keep the cable away from high-voltage lines and ensure the power supply is current-limited to 40 mA to protect the transmitter.
Maintenance & Reliability
This transmitter requires minimal maintenance due to its sealed design. Periodically inspect the connector for moisture or corrosion, and verify the mounting integrity—loose mounts can affect vibration readings. The hermetic seal protects internal components, so no regular calibration is needed under normal operating conditions. With a settling time under 15 seconds, the 177230-01-01-CN quickly stabilizes after power-up, minimizing startup delays.
Buying Guide
When ordering the 177230-01-01-CN, confirm the mounting thread option (1/4-28 UNF is standard) and the connector type. This model includes country-specific approvals (CN option), so verify that it meets your local regulatory requirements. For assistance with compatibility or to place an order, PLC Source PRO offers genuine Bently Nevada parts with reliable worldwide shipping.