AP3500T2-Z1 Bently Nevada Accelerometer | Case Mounted Vibration Sensor

Bently Nevada AP3500T2-Z1 Technical Introduction

The Bently Nevada AP3500T2-Z1 is a high-sensitivity, case-mounted accelerometer designed for low-frequency industrial vibration applications. It provides detailed structural monitoring for heavy rotating machinery.

Featuring a premium Lead Zirconate Titanate (PZT) ceramic shear sensing element, the Bently Nevada AP3500T2-Z1 delivers an exceptional dynamic sensitivity of 500 mV/g. This high-output scale factor allows for precise measurement of low-amplitude, low-frequency machinery defects.

The internal electronics are isolated from the 316L stainless steel case and fully shielded against electromagnetic interference. A top-exit, 2-pin MIL-C-5015 connector provides a secure connection point, while the hermetically sealed enclosure ensures reliable operation in demanding environments.

Global PLC Spare HUB's Insight

The Bently Nevada AP3500T2 series serves as a critical diagnostic tool for slow-speed industrial assets. Its 500 mV/g sensitivity captures subtle signal changes that low-sensitivity sensors miss.

The shear-mode ceramic design significantly reduces base strain sensitivity and thermal transient errors. This design choice helps prevent thermal drift from generating false alarms on hot machine casings.

Reliable operation down to 0.2 Hz makes this sensor well-suited for low-speed machinery protection loops. Plant maintenance teams count on this robust sensor to monitor low-frequency balance and structural structural health across critical infrastructure projects.

Configuration Breakdown (Part Number Structural Tree)

The ordering code configuration for the Bently Nevada AP3500T2-Z1 industrial sensor series is structured below:

• AP3500 — Case Mounted Industrial Accelerometer Base Series
  • T2 [This Model] — Top-exit configuration utilizing a standard 2-pin MIL-C-5015 style connector interface
  • -Z1 [This Model] — High-sensitivity performance tier optimized for low-frequency monitoring (500 mV/g output rating)
• Physical Enclosure & Mounting Features:
  • Housing Construction: Hermetically sealed 316L structural stainless steel case
  • Mechanical Interface: Base layout featuring a standard 1/4-28 UNF tapped mounting hole
  • Internal Architecture: Case-isolated electrical grounding scheme paired with built-in Faraday shielding

Target Equipment & Plant Applications

• Low-Speed Cooling Tower Fans: Detecting blade imbalance and gear mesh faults at speeds below 300 RPM.
• Hydroelectric Water Turbines: Monitoring low-frequency runner vibrations and structural structural resonance.
• Paper Machine Dryer Sections: Tracking bearing health under high temperatures and slow rotational speeds.
• Wind Turbine Main Bearings: Capturing slow structural oscillations and early rolling-element breakdown signals.

Diagnostic Capabilities & Structural Integration

• Low-Frequency Fault Detection: Captures structural anomalies from 0.2 Hz up to 2,300 Hz with minimal signal roll-off.
• High-Shock Resilience: Withstands transient physical impacts up to 5,000 g peak without damage to the crystal array.
• Low-Noise Performance: Spectral noise of 0.2 μg/√Hz at 1 kHz allows for clear trending of tiny sub-harmonic signals.

Technical Specifications Table

Global Logistics, Delivery & Warranty Terms

• Courier Networks: Priority dispatch globally via trusted carriers DHL, FedEx, and UPS.
• Shipment Handling: Orders are processed and dispatched within 24 to 48 hours of confirmation.
• Warranty Terms: Provided with a comprehensive 12-month replacement warranty covering component failure.

Strategic Procurement & Selection Guide

• Cable Length Planning: Bently Nevada specifies using a twisted, shielded pair cable under 100 feet to limit high-frequency roll-off.
• Dynamic Range Verification: The 10 g peak limit means high-frequency machinery can saturate the amplifier. Keep this sensor dedicated to low-speed assets.
• Mounting Surface Quality: Use a flat, milled surface tapped for 1/4-28 UNF studs. Poor mounting alignment will degrade high-frequency accuracy.

Industrial Frequently Asked Questions (FAQ)

Q: Why is the bias output voltage of the AP3500T2-Z1 set to 10 Vdc?

A: The 10 Vdc bias centers the output signal within the 18-30 Vdc supply window. This center point allows the sensor to swing symmetrically up to its 10 g peak limit without clipping.

Q: Can I mount this accelerometer directly to a curved motor casing using an epoxy base?

A: Curved surfaces degrade signal transmission. For accurate data down to 0.2 Hz, mill a flat mounting pad and thread a 1/4-28 UNF stud directly into the machine casing.

Q: What are the electrical wiring assignments for the MIL-C-5015 connector pins?

A: Connect Pin A to the positive power/signal line and Pin B to the system common return. The outer shell ground connects to the inner shield drain wire.

Q: What causes sensor saturation in the Bently Nevada AP3500T2-Z1, and how do I notice it?

A: High-frequency mechanical shock outside the measurement range can overload the sensor. This shows up as a sudden shift or drift in the DC bias voltage output.

Q: Does this accelerometer require external charge amplifiers to transmit data over 50 feet?

A: No. The internal electronics convert the high-impedance charge signal to a low-impedance voltage output. This internal conversion allows for clean signal transmission over standard twisted-pair runs up to 100 feet.

Tags