Bently Nevada 177230-00-01-05 Seismic Transmitter The Bently Nevada 177230-00-01-05 serves as the primary 177230 Seismic Transmitter utilized to execute absolute...
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Description
Bently Nevada 177230-00-01-05 Seismic Transmitter
The Bently Nevada 177230-00-01-05 serves as the primary 177230 Seismic Transmitter utilized to execute absolute casing vibration velocity measurements across machinery protection and monitoring platforms.
Hardware Specifications
Parameter
Specification
Model
177230-00-01-05
Brand
Bently Nevada
Origin
USA
Weight
0.1 kg
Dimensions
7.4 x 3 x 2.5 cm
Operating Temperature
-40 degC to +85 degC
Power Consumption
Loop-powered (4-20 mA)
Measurement Range
0 - 12.7 mm/s (0 - 0.5 in/s)
Frequency Response
10 Hz to 1 kHz (600 to 60 kcps)
Sensitivity
10.2 mV/m/s2 (100 mV/g) +- 20%
Full Scale Range
147 m/s2 (15 g) peak
Tariff Code
8537101190
Approvals
Multiple Approvals
Machinery Monitoring and TSI Characteristics
The 177230 series integrates an internal piezoelectric accelerometer and electronic signal processing circuits to output a 4-20 mA current loop signal proportional to velocity. To prevent signal distortion during multi-sensor installations on a single machine train, the internal processing engine leverages advanced cross-talk suppression. This mitigates electromagnetic interference and localized structural cross-talk from adjacent rotating elements, preserving exact frequency data required for structural resonance and rotor dynamics evaluation.
Frequently Asked Questions
Q: Does this device support hot-swapping under live loop power?
A: Yes, the hardware can be disconnected and reconnected under loop power without causing damage to the internal electronics, provided the external instrumentation system is current-limited.
Q: How is the 4-20 mA loop verified during field commissioning?
A: Loop integrity and baseline operational status are validated by monitoring the quiescent current loop output, which balances at 4 mA under zero-vibration conditions. Deviations below 3.6 mA indicate loop degradation or hardware failure.
Field Installation Guidelines
Mounting Torque and Surface: The mounting surface must be machined flat and perpendicular to the axis of measurement. Torque the sensor to standard specification to prevent high-frequency signal attenuation across the mechanical interface.
Shielding and Grounding: Connect the cable shield exclusively to the instrumentation system common ground at the receiver side. Keep the shield isolated and floating at the transmitter housing to prevent ground loop currents.
Cable Routing: Maintain physical separation between the transmitter signal cabling and high-voltage AC distribution lines or variable frequency drive output cables to minimize electromagnetic coupling.
