IEPE accelerometer

Sensor response

IVIB251120-IEPE-T1AX is a single-axis annular-shear piezoelectric accelerometer. These ratings describe the sensor; the acquisition system sets the recorded frequency band.

Sensitivity

100 mV/g ±10%

Dynamic range

80 g peak

Frequency response

1–9,000 Hz (±10%); 0.5–14,000 Hz (±3 dB)

Mounted resonance

25 kHz nominal

Linearity

±1% maximum

Measurement

One vibration axis

For an existing IEPE acquisition system, select 100 mV/g sensitivity and a suitable recording bandwidth. The sensor uses constant-current excitation over the same two wires as its voltage signal.

Recording with the IEPE AD module

Each BRID211010-ADMOD-IEPE module excites and digitises one accelerometer. Configure the recording from the dashboard and analyse the transferred samples on the M4.

Exported sampling rate

Nominal 4–4,000 samples/s, selectable

Recording length

32–8,192 samples per channel

Sensor sensitivity

Selectable 10, 100, 500 or 1,000 mV/g; use 100 mV/g for this sensor

Capture

Programmable recording interval or manual request

Analysis

Time waveform, FFT spectrum, waterfall, RMS and kurtosis; sample export

Units

Acceleration in g or calculated velocity in mm/s

Recording rate and filter bandwidth

The highest nominal rate exports approximately 3,906 samples/s. The ADC digital filter has a −3 dB corner of about 480 Hz at that setting. Its filter response, the sensor and mounting all affect the recorded signal. The sensor’s 9 kHz response rating is separate from this acquisition path.

Mounting & cable

Stud-mount the sensor on a prepared, rigid measurement surface. Use a shielded two-pin MIL cable to connect the sensor to the IEPE input, and secure the cable near the measurement point.

Sensor connector

Two-pin MIL glass-seal hermetic connector

Cable lengths

5 m, 10 m and 15 m options; blunt-cut bridge end

Sensor temperature

−55 to +120 °C

Standard cable temperature

−30 to +90 °C

Module and bridge temperature

−10 to +50 °C

Ground isolation

Dual-case isolation with an internal Faraday shield; 100 MΩ minimum case-to-shield isolation

Keep the bridge and cable within their own temperature ratings when the sensor is mounted on a hot or cold machine surface.

Wireless Sensor Bridge connection

The accelerometer connects by cable to an IEPE AD module inside the bridge. The bridge sends measurements over the iQunet radio network to an M4 with a compatible radio interface.

Capacity

Up to three AD modules, one sensor channel per module

Power

24 V DC; the 5.1 V / 15 W micro-USB alternative is limited to IEPE and compatible current-clamp configurations

Enclosure

IP66/67 bridge enclosure; the plug-in AD module has no standalone ingress protection

Module temperature

−10 to +50 °C

Channel timing

Each AD module uses its own acquisition clock; separate channels are not phase-synchronised

Data access on the M4

Browser analysis, sample export, OPC UA, MQTT, GraphQL and OpenAI MCP

Select matching radio hardware for the installation. Sensors, cables and AD modules are separate components.

Sensor specifications

IVIB251120-IEPE-T1AX · Datasheet D1369

Construction

AISI 316L stainless steel, hermetically sealed

Weight

85 g

Dimensions

50.8 mm high; 22 mm hex body; see drawing for connector dimensions

Excitation

4 mA nominal constant current; 2–10 mA DC permitted

Supply compliance

22–28 V DC, through an IEPE constant-current source

Output bias

12 V DC nominal at 4 mA

Output impedance

50 Ω nominal

Warm-up time

Less than 1 second

Shock limit

5,000 g peak

Continuous vibration limit

500 g peak

The shock and continuous-vibration limits describe mechanical survival. The measurement range is 80 g peak.

Datasheets