Bently Nevada AM3100T2-Z2 IEPE Accelerometer

AM3100T2-Z2 Description

The AM3100T2-Z2 is an Integrated Electronics Piezo-Electric (IEPE) accelerometer optimized for obtaining high quality vibration signals in harsh industrial environments. Its piezo sensing element provides exceptional dynamic range, frequency range, and linearity, while the integrated amplifier boosts the signal and improves immunity to electrical noise.

The sensor requires an industry standard constant-current power supply and provides an output voltage proportional to the acceleration signal, allowing interface with a wide variety of condition monitoring systems.

The AM3100T2-Z2 features a top-exit connector configuration, 100 mV/g sensitivity, and Zone 2 hazardous-area certification.

Features

• Rugged stainless design, corrosion resistant
• Hermetic seal, case isolated
• ESD protection
• Reverse wiring protection
• EMI / RFI shielded
• Hazardous area certifications

Benefits

• Able to fit in small spaces
• Light weight for walk around programs
• Cross wiring does not harm sensor
• Prevents ground loops in permanent mount applications
• Can be hosed down or submersed with proper connector
• Can be used in applicable certified hazardous areas

Technical Specifications

Dynamic

Electrical

Environmental

Physical

Connections

Frequency response and spectral noise values are typical.

Installation Guidelines

Mounting Surface Preparation

Install the sensor on a clean, flat, and rigid mounting surface. Remove paint, rust, grease, and debris before installation to ensure proper mechanical coupling and accurate vibration transmission.

Poor mounting surfaces may reduce high-frequency response and introduce measurement errors.

Mounting Procedure

Use the supplied ¼-28 mounting stud for installation.

Installation recommendations:

• Ensure proper thread engagement
• Tighten the sensor securely
• Avoid excessive mounting torque
• Prevent sensor base distortion during installation

Cable Routing

Use shielded twisted-pair cable as recommended by the manufacturer.

For best signal quality:

• Keep cables away from high-voltage wiring
• Avoid routing near VFD output cables and large motors
• Prevent sharp cable bends
• Secure the cable to reduce movement-induced noise

Recommended cable length should not exceed 100 feet.

Connector Protection

The sensor uses a top-exit 2-pin MIL-C-5015 style connector.

In wet or outdoor environments:

• Fully tighten the connector
• Use moisture-resistant cables and connectors
• Regularly inspect sealing integrity

The hermetic sensor body helps protect against moisture ingress when properly installed.

Power Supply Requirements

The AM3100T2-Z2 requires an IEPE constant-current power source.

Required electrical supply:

• Voltage source: 18–30 Vdc
• Current regulating diode: 2–10 mA

Verify compatibility with the monitoring system before commissioning.

Grounding Practices

The sensor is case isolated and internally shielded to help reduce ground loop problems.

Recommended practices:

• Use single-point grounding
• Avoid multiple shield grounding locations
• Inspect grounding continuity during installation

Hazardous Area Installation

The AM3100T2-Z2 is approved for Zone 2 hazardous locations.

Installation must comply with:

• Install per drawing 117M2767

Ensure all associated wiring, barriers, and cable glands meet hazardous-area installation requirements.

Compliance and Certifications

European Community Directives

• ATEX Directive 2014/34/EU
• EMC Directive 2014/30/EU
• LV Directive 2014/35/EU
• Reach Directive 1907/2006/EC
• ROHS Directive 2011/65/EU

Standards

• EN 61326-1
• EN 60079-0
• EN 60079-15

Hazardous Area Approvals

CSA/NRTL/C

• Class I, Div 2, Groups A, B, C, D
• Class I, Zone 2, AEx/Ex nA IIC T4
• Install per drawing 117M2767

ATEX / IECEx

• II 3G Ex nA nC IIC T4 Gc

FAQ

What type of sensor is the AM3100T2-Z2?

The AM3100T2-Z2 is an IEPE accelerometer designed for industrial vibration monitoring applications.

What is the sensor sensitivity?

The sensor sensitivity is 100 mV/g (±5% at 25°C).

What is the acceleration measurement range?

The sensor supports an acceleration range of 80 g peak.

What frequency range does the sensor support?

Frequency response specifications are:

• ±10%: 0.7–9,000 Hz
• ±3 dB: 0.4–14,000 Hz

What power supply is required?

The sensor requires:

• 18–30 Vdc supply voltage
• 2–10 mA constant current excitation

Is the sensor suitable for hazardous areas?

Yes. The AM3100T2-Z2 is certified for Zone 2 hazardous-area applications.

What connector type does the sensor use?

The device uses a top-exit 2-pin MIL-C-5015 style connector.

Is the sensor case grounded?

No. The sensor is case isolated and internally shielded.

What is the operating temperature range?

The operating temperature range is -55°C to 120°C.

Can the sensor be used in wet environments?

Yes. The sensor has a hermetic seal and can operate in wet environments when proper sealed connectors and cables are used.

What mounting thread does the sensor use?

The mounting interface is a ¼-28 UNF tapped hole.

What cable type is recommended?

Shielded twisted-pair cable is recommended, with a maximum length of 100 feet.

Does the sensor include reverse wiring protection?

Yes. The device includes reverse wiring protection to help prevent damage caused by incorrect wiring.

Is the sensor resistant to EMI and RFI?

Yes. The sensor includes EMI/RFI shielding to improve electrical noise immunity.