Bently Nevada 177230-01-01-05 Seismic Transmitter

177230-01-01-05 Bently Nevada Seismic Transmitter

Product Introduction

The Bently Nevada 177230-01-01-05 delivers high-range vibration monitoring for rotating machinery in hazardous areas. This seismic transmitter measures absolute casing vibration. It outputs a 4-20 mA current loop signal proportional to RMS velocity. You can connect it directly to PLCs, DCS, or SCADA systems. Additionally, it provides a dynamic acceleration signal on a separate pin. Furthermore, this version carries multiple global approvals for safe use in explosive environments. The wider measurement range suits machinery with higher vibration levels.

Key Specifications

Measurement Range: 0 to 25.4 mm/s (0 to 1.0 in/s) RMS, ±10% accuracy
Frequency Response: 10 Hz to 1 kHz (600 to 60,000 cpm) , ±10%
Output Signal Main Loop: 4 ± 0.3 mA = 0.0 mm/s, 20 ± 2 mA = full scale
Output Type: Proportional to RMS vibration levels
Sensitivity Dynamic Pin C: Unbuffered acceleration signal referenced to Pin B

The 177230-01-01-05 uses a ceramic shear sensing element. Its mounted resonant frequency exceeds 12 kHz. Moreover, transverse sensitivity stays below 5% of the main sensitivity. This model offers double the measurement range compared to standard 12.7 mm/s versions.

Electrical Parameters

Excitation Voltage: 12 to 30 Vdc , current limited to 40 mA
Settling Time: Less than 15 seconds within 2% of final value
Electrical Isolation: Greater than 10⁸ ohms
Isolation Breakdown Voltage: 600 Vrms with less than 1 mA leakage

This transmitter works with typical PLC and DCS internal power supplies. These supplies usually limit current between 30 mA and 35 mA. Consequently, the 177230-01-01-05 draws power safely without overloading your system.

Connector Wiring Convention (3-pin MIL-C-5015, 316L SS)

Pin A: 4-20 mA positive loop (positive with reference to Pin B)
Pin B: 4-20 mA loop return (negative loop return for Pin A and common for dynamic signal)
Pin C: Dynamic acceleration signal (unbuffered, referenced to Pin B)

Physical Dimensions & Materials

Diameter: 25.4 mm (1.00 in)
Height: 66.0 mm (2.60 in)
Weight: 0.131 kg (4.62 oz) typical
Case Material: 316L stainless steel
Connector: 3-pin MIL-C-5015, also 316L stainless steel
Mounting Hole in Body: 1/4-28 UNF
Mounting Thread Options: M6 x 1 SI, M8 x 1.25 SI, or 1/4-28 UNF
Mounting Torque: 4 to 7 N-m (35.4 to 62.0 in-lbf)

Environmental Limits

Operating Temperature: -40°C to +85°C (-40°F to +185°F)
Relative Humidity: To 100% non-submerged
Sensor Seal: Hermetically sealed
Shock Survivability: 9.810 m/s² (1.000 g peak) , maximum drop test
Magnetic Field Sensitivity: Less than 20 μm/s/gauss peak (based on 50 gauss, 50-60 Hz)

The Bently Nevada 177230-01-01-05 withstands extreme conditions. Its 316L stainless steel construction resists corrosion. Moreover, the hermetically sealed sensor prevents moisture ingress.

Agency Approvals (Option 05)

Approvals: Multiple Approvals - CSA/NRTL/C, ATEX/IECEx

This certification package allows global installation. You can use the 177230-01-01-05 in North American and European hazardous locations. Always check local regulations before installation. The multiple approval option saves you from buying different transmitters for different regions.

Key Differences from Other 177230 Models

Compare this model with other Bently Nevada seismic transmitters:

Therefore, choose the 177230-01-01-05 when you need a wider 25.4 mm/s measurement range with RMS output and hazardous area approvals.

Installation Guidelines

First, verify your mounting thread matches one of the three options. Next, apply 4 to 7 N-m of torque during installation. Do not exceed this value. Then, connect the 3-pin MIL connector securely. Ensure Pin A goes to positive loop, Pin B to loop return, and Pin C to your dynamic signal input. Finally, apply 12-30 Vdc excitation. Wait at least 15 seconds for the output to settle within 2% of the final value.

Typical Applications

You can install the 177230-01-01-05 on machinery with higher vibration levels. For instance, large compressors, heavy-duty fans, and high-speed turbines benefit from the 25.4 mm/s range. The RMS output suits applications where average vibration energy matters most. The multiple approvals allow installation in refineries, chemical plants, and offshore platforms. This model works especially well when your vibration limits exceed the standard 12.7 mm/s threshold.

Packaging List

• 177230-01-01-05 seismic transmitter (one unit)

• Factory packing with anti-static protection

• Quick reference guide (printed)

Note: Warranty and certificates are not included in the package.

Shipping Information

We ship all orders via FedEx, UPS, or DHL. The 177230-01-01-05 leaves our warehouse within 24 hours after payment confirmation. Tracking number provided immediately.

Frequently Asked Questions (FAQ)

1. What machinery is best suited for the 177230-01-01-05?
Use this model on equipment with expected vibration levels between 12.7 mm/s and 25.4 mm/s. Examples include large compressors, high-speed turbines, and heavy industrial fans.

2. Can I use this transmitter with my existing 3300 XL monitoring system?
Yes, the 177230-01-01-05 is fully compatible with Bently Nevada 3300 XL and other standard monitoring systems that accept 4-20 mA inputs.

3. Why choose RMS output over peak output?
RMS output better represents the overall vibration energy. It is the industry standard for steady-state machinery monitoring. Peak output responds faster to impact events.

4. What happens if the vibration exceeds 25.4 mm/s full scale?
The output will saturate near 20 mA. The sensor will not suffer damage. However, you will lose measurement accuracy above the full scale range. Consider a different model if your machine regularly exceeds this level.

5. Is the 12-month factory warranty valid for hazardous area installations?
Yes, the warranty remains valid regardless of installation environment. However, we do not include warranty documents in the package. Contact us with your proof of purchase to claim warranty service.