177230-02-01-05 | Bently Nevada Seismic Transmitter

Introduction to the Bently Nevada 177230-02-01-05

When your rotating machinery depends on accurate vibration data, the 177230-02-01-05 from Bently Nevada provides a robust solution. This seismic transmitter converts vibration into a standard 4-20 mA signal, making it straightforward to integrate with existing control systems. Designed for continuous operation, it helps you monitor machine health without guesswork.

As an industrial automation professional, you need components that perform consistently. The 177230-02-01-05 is built to meet that need, offering a measurement range of 0 to 50.8 mm/s (0 to 2.0 in/s) and a frequency response from 10 Hz to 1 kHz. Whether you are upgrading an existing system or specifying new equipment, this transmitter delivers dependable performance.

Key Features and Technical Specifications

The Bently Nevada 177230-02-01-05 is engineered for precision and durability. Here are the core specifications you can rely on:

• Output Signal: 4-20 mA current loop from Pin A to Pin B, proportional to peak vibration levels.
• Excitation Voltage: 12 to 30 Vdc, current limited to 40 mA, compatible with typical PLC, DCS, and SCADA power supplies.
• Measurement Range: 0 to 50.8 mm/s (0 to 2.0 in/s) RMS.
• Frequency Response: 10 Hz to 1 kHz (600 to 60 kcpm) RMS.
• Full Scale Range: 25.4 mm/s (1.0 in/s) ±10%.
• Sensitivity: 4 ±0.3 mA equals 0.0 mm/s; 20 ±2 mA equals full scale.
• Case Material: 316L stainless steel, hermetically sealed.
• Connector: 3-pin MIL-C-5015, 316L stainless steel.
• Mounting: 1/4-28 UNF hole in body; M6 x 1 SI, M8 x 1.25 SI, and 1/4-28 UNF threads available.
• Operating Temperature: -40°C to +85°C (-40°F to +185°F).
• Relative Humidity: Up to 100% non-submerged.
• Weight: 0.131 kg (4.62 oz).

One standout feature is the mounted resonant frequency, which exceeds 12 kHz. This ensures that the transmitter does not interfere with the vibration signal in most industrial applications, giving you accurate readings even at higher frequencies.

Applications and Use Cases

The 177230-02-01-05 is ideal for monitoring vibration on pumps, fans, motors, and other rotating equipment. Because it outputs a standard 4-20 mA signal, it connects directly to PLCs, DCS, and SCADA systems without additional signal conditioning. This simplifies installation and reduces overall system cost.

For example, in a continuous process plant, you can use this transmitter to track bearing wear or imbalance. The 4-20 mA loop allows you to set alarms and trend data over time, helping you schedule maintenance before failures occur. Its robust stainless steel construction and hermetic seal make it suitable for harsh environments, including those with high humidity or washdown requirements.

Installation and Setup

Mounting the 177230-02-01-05 is straightforward. Use the 1/4-28 UNF mounting hole or the optional M6 or M8 threads. Apply a mounting torque of 4 to 7 N-m (35.4 to 62.0 in-lbf) to ensure a secure and accurate measurement. The connector wiring convention is clearly defined: Pin A is the 4-20 mA positive loop, Pin B is the loop return, and Pin C provides a dynamic acceleration signal (unbuffered, referenced to Pin B).

When wiring, ensure the power supply is current-limited to 40 mA or less, as the transmitter is designed for supplies typically limited to 30-35 mA. This prevents damage and ensures proper operation. After installation, allow up to 15 seconds for the settling time before relying on the output.

Maintenance and Reliability

Because the 177230-02-01-05 is hermetically sealed and made of 316L stainless steel, it requires minimal maintenance. However, periodic inspection is recommended to verify that the mounting remains secure and the connector is clean and free from corrosion. Check the output signal periodically to ensure it remains within the expected 4-20 mA range.

The transmitter is built to withstand shock and vibration, with a shock survivability of 9.810 m/s² (1.000 g peak) in a drop test. Its transverse sensitivity is less than 5%, and magnetic field sensitivity is less than 20 μm/s/gauss, ensuring reliable readings even in electrically noisy environments.

Compatibility and Integration

The 4-20 mA output makes the 177230-02-01-05 compatible with virtually any PLC, DCS, or SCADA system that accepts analog current inputs. This universal interface simplifies integration, whether you are retrofitting an older machine or designing a new monitoring system. The dynamic acceleration signal on Pin C can be used for additional diagnostics if your system supports it.

Frequently Asked Questions

Q: What is the output signal of the 177230-02-01-05?

A: The transmitter provides a 4-20 mA current loop output, proportional to peak vibration levels.

Q: What is the operating temperature range?

A: The 177230-02-01-05 operates from -40°C to +85°C (-40°F to +185°F).

Q: How do I mount the transmitter?

A: Use the 1/4-28 UNF mounting hole or optional M6 or M8 threads. Apply 4 to 7 N-m (35.4 to 62.0 in-lbf) torque.

Q: Can it be used in high humidity environments?

A: Yes, it is rated for relative humidity up to 100% non-submerged.

Product Support and Availability

The Bently Nevada 177230-02-01-05 is available through Petro Auto Tech, your trusted source for industrial automation parts. We ensure genuine products and reliable delivery. Contact us for current lifecycle status and availability before placing an order.