Product Overview
When monitoring slow-rotating shafts in fin-fan applications, the Bently Nevada 200155-23-05 Low Frequency Trendmaster Pro accelerometer delivers precise vibration data. This sensor, part of the Trendmaster Pro family, excels in low-frequency environments where standard accelerometers struggle. With a sensitivity of 10.2 mV/(m/s²) at 80 Hz, it captures subtle vibrations critical for predictive maintenance.
Technical Specifications
The 200155-23-05 offers a measurement range of ±196 m/s² (±20 g) and a frequency range of 1.5 to 10,000 Hz (90 to 600,000 cpm). Its mounted resonant frequency exceeds 20 kHz, ensuring reliable performance across its operating band. Amplitude linearity stays within ±2% for 1 to 10 g peak, while transverse sensitivity is ≤7%. The accelerometer settles within 5% of bias in ≤2000 ms, powered by an excitation voltage of 4.7 to 5.5 Vdc. Quiescent current is <800 µA, and output bias voltage is +2.5 ± 0.23 Vdc. For low-frequency velocity measurements, it supports a measurement range of 24.5 mm/s² (2.5 mg).
Industry Applications
This accelerometer is ideal for fin-fan cooling towers and other slow-rotating machinery. In fin-fan applications, blade pass frequencies fall below 10 Hz, where the 200155-23-05’s low-frequency response ensures accurate trend data. Use it with the ProTIM option for low-frequency acceleration-to-velocity conversion. The sensor’s hermetic sealing (5x10⁻⁸ atm•cc/s max) and 100% relative humidity tolerance suit outdoor installations.
Installation & Setup Guidance
Mount the 200155-23-05 using its 3/8-24 female thread. The stud option 23 provides a 3/8-24 to M16x2.0 adapter with a 1-3/8 inch hex plate. Apply mounting torque between 2.7 to 6.8 N•m (2 to 5 ft•lbf). Ensure the base-to-connector polarity is correct: SIG+ positive with respect to SIG-. Allow 24 hours cure time for adhesive mounting, if applicable.
Maintenance & Reliability
Routine inspection of the accelerometer’s sealing integrity and cable connections extends service life. The 316L stainless steel housing resists corrosion in harsh environments. Operating temperature range is -40 ºC to +105 ºC (-40 ºF to +221 ºF), with storage capability from -55 ºC to +121 ºC (-67 ºF to +250 ºF). Axial shock limit is 49,050 m/s² pk (5,000 g pk). Regular calibration checks ensure measurement accuracy.
Compatibility & Integration
The 200155-23-05 works with Bently Nevada monitoring systems that accept Trendmaster Pro inputs. Use it with the ProTIM option for low-frequency acceleration-to-velocity channel type (-05). Multiple approvals (CSA, ATEX, and IECEx) simplify integration into certified safety systems.
Buying Guide
Before purchasing, verify your system’s compatibility with the 200155-23-05’s excitation voltage and output bias. Confirm the mounting thread (3/8-24 female) matches your installation. SpareTechPLC offers this accelerometer with fast shipping and expert support for your industrial automation needs.
