177230-02-02-05 | Bently Nevada 0-50.8 mm/s Seismic Transmitter

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

When rotating machinery health is critical, the 177230-02-02-05 from Bently Nevada provides a reliable solution. This seismic transmitter converts vibration into a standard 4-20 mA signal, enabling seamless integration with PLCs, DCS, and SCADA systems. Built for continuous operation, it helps you monitor asset condition without guesswork.

Key Features and Technical Specifications

The 177230-02-02-05 is engineered for accuracy and durability. Below are its core specifications:

• Measurement Range: 0 – 50.8 mm/s (0 – 2.0 in/s) peak
• Frequency Response: 3 Hz to 1 kHz (180 to 60 kcpm) ±10%
• Output Signal: 4-20 mA current loop (Pin A to Pin B)
• Sensitivity: 4 ± 0.3 mA equals 0.0 mm/s; 20 ± 2 mA equals full scale
• Excitation Voltage: 12 to 30 Vdc (current limited to 40 mA)
• Settling Time: Less than 15 seconds within 2% of final value
• Operating Temperature: -40°C to +85°C (-40°F to +185°F)
• Case Material: 316L stainless steel
• Connector: 3-pin MIL-C-5015, 316L stainless steel
• Weight: 131 g (4.62 oz) typical

One distinctive feature is the hermetically sealed sensor, which protects against moisture and harsh conditions. This ensures long-term stability and reduces maintenance needs.

Real-World Applications

This transmitter is ideal for monitoring vibration on pumps, fans, compressors, and other rotating equipment. Its 4-20 mA output simplifies wiring to existing control systems, making retrofits straightforward. For example, in a petrochemical plant, you can connect the 177230-02-02-05 directly to a DCS analog input module, enabling continuous vibration trending and alarm management. This proactive approach helps avoid unplanned downtime and extends machinery life.

Installation and Mounting

Proper installation is key to accurate readings. The transmitter features a 1/4-28 UNF mounting hole and also supports M6 x 1 SI and M8 x 1.25 SI threads. Recommended mounting torque is 4 to 7 N-m (35.4 to 62.0 in-lbf). Ensure the mounting surface is clean and flat to achieve optimal frequency response. The 3-pin MIL-C-5015 connector simplifies wiring: Pin A is the 4-20 mA positive loop, Pin B is the loop return, and Pin C provides an unbuffered dynamic acceleration signal.

Maintenance and Reliability

With a rugged 316L stainless steel case and hermetically sealed sensor, the 177230-02-02-05 is built for low-maintenance operation. It can withstand 100% relative humidity (non-submerged) and has a shock survivability of 9,810 m/s² (1,000 g peak) drop test. Periodic inspection of the connector and cable is recommended to ensure signal integrity. Because the transmitter has no moving parts, it offers excellent long-term reliability, reducing total cost of ownership.

Integration with Control Systems

This transmitter is specifically designed for use with PLCs, DCS, and SCADA systems that have internal power supplies typically current-limited in the range of 30 mA to 35 mA. The 4-20 mA loop output is universally accepted, so you can connect it to standard analog input cards without special adapters. This compatibility simplifies integration and reduces engineering effort.

Frequently Asked Questions

What is the measurement range of the 177230-02-02-05?

The measurement range is 0 – 50.8 mm/s (0 – 2.0 in/s) peak.

What output signal does the transmitter provide?

It provides a 4-20 mA current loop output proportional to peak vibration levels.

What is the operating temperature range?

The operating temperature range is -40°C to +85°C (-40°F to +185°F).

Can the transmitter be used in humid environments?

Yes, it can operate in up to 100% relative humidity (non-submerged).

What mounting options are available?

It has a 1/4-28 UNF mounting hole and also supports M6 x 1 SI and M8 x 1.25 SI threads.

Support and Availability

Petro Auto Tech offers the 177230-02-02-05 as a genuine Bently Nevada product. For current availability and lifecycle status, please contact Petro Auto Tech before ordering. Our team can assist with technical questions and ensure you receive the right solution for your application.