1. Overview

AN3580 series dual vibration monitoring receives signals from two magnet-electrical vibration velocity Sensors(Bearing vibration) or Proximity sensors(shaft vibration); the original signals from the sensor are converted into digital signals by a signal interface unit; the digital signals are transmitted to an embedded microcontroller unit (MCU), and are then identified, judged, processed and compared by software and output by output units, thus implementing online monitoring and protection of device Vibration.

2. Purpose

l Online monitoring and protection of rotary machine bearing vibration;

Online monitoring and protection of rotary machine shaft vibration;

Online monitoring and protection of rotary machine Throw.

3. Functions

Highlight digital display unit: To display real-time vibration value;

Plate-type touch keyboard: Field programming parameter setting;

Standard signal output: 4-20mA;

On-off output: two-stage alert normally open/closed contact output;

LED indicator: To display various statuses;

Buffer interface: Sensor original signal buffer output.

4. Features

Perfect self-inspection and diagnosis function; when a failure occurs, current output is 0mA, and "Not Ok" LED on the panel is on;

Embedded microcontroller unit (MCU); an E2PROM data storage unit (for important parameters) and a FLASH process program storage unit are integrated in the chip;

Power unit: a DC-DC/AC-DC module power supply realizes ultra-width power input and isolated output;

5. Application

Application Fields:

Power plants (thermal, hydro, nuclear and wind)

Metallurgy (steel mills and aluminium manufacturers, etc.)

Petrochemical engineering (refining and chemical, coal chemical industry and chemical fertilizers, etc.)



Mine (coal and iron mines)

Hydraulic engineering (reservoirs and pump stations), etc.

Monitored equipment:

Steam turbines;



Water pumps;


Water turbines;

Air blowers;



Rotary machines like fans.

6. Technical Specifications


Magneto-electric Velocity sensor: 

Inertial sensor, no power supply, Sensitivity: 20mV/mm/S (500mV/in/s).

Piezoelectric acceleration sensor: 

ICP type, 24V / 4mA constant current source power supply Sensitivity: 100mV/g

Piezoelectric velocity sensor: 

ICP type, 24V / 4mA constant current source power supply Sensitivity: 4mV/g

Proximity sensor: Φ8 probe

Sensitivity: 7.87mV/μm (200mV/mil)

Output voltage: -2 ~ -18VDC;

GAP voltage: -10VDC.

Range of measurement:

Displacement: 0~999μm(Pk-Pk); Resolution: 1μm; Precision: 0.5%±1μm.

Velocity: 0~99.9mm/S(rms); Resolution: 0.01mm/S; Precision: 0.5%±0.01mm/S.

Acceleration: 0~9.99g(Pk); Resolution: 0.01g; Precision: 0.5%±0.01g.

The frequency range

 Piezoelectric Sensor: 0.5~15KHz;

Magneto-electric Sensor:

Standard: 10~1000Hz

Low frequency: 5~1000Hz  

Ultra-low frequency: 0.5~100Hz;

Proximity Sensor:0~10 KHz;

Power supply:

DC supply: 24VDC (18-36V);

AC supply: 220VAC(185-260V)/47-63Hz;

AC supply: 110VAC/47-63Hz;

Overall power consumption: ≤5W.

Standard signal output: Standard current

Active 4-20mA (corresponding to upper range)

Drive load: ≤750Ω

Effective transmission distance: ≤ 300m (1,000 feet).

Relay output:

Two-stage threshold (Alert, Danger) programmable setting, normally open/closed dry contact output, configurable whole range, with an error ≤0.1%;

Insulation resistance: ≥1000MΩ;

Contact capacity: 2A/30VDC, double-pole double-throw (DPDT);

Alarm-delay: 0.1-60S, default: 0.5S;

Alert lock: Defaulting to non-locking.

Physical property:

Boundary dimension: 160(W)×80(H)×120(D)mm  6.3(W)×3.15(H)×4.7(D)in

Weight: 1.2kg.

Way of installation:

Open hole installation:

Hole size: 152 (W) × 76 (H) mm, 6.0(W) ×3.0(H)in

Environmental restrictions:

Operating temperature: -30℃ ~ +65℃ (-22oF ~ +150 oF);

Storage temperature: -40℃ ~ +85℃ (-40oF ~ +180 oF);

Relative humidity: 0 ~ 95% (non-condensing).

Executive standards

The United States Petroleum Association Standard: API 670;

Safety certificate: C E;

Protection level: IP56;

Anti-electromagnetic interference: EMC\ LVD;

Refer to EN55011\ EN 61010\EN50081\EN50082

7. Ordering information

AN3581/82/83—Bearing vibration / shaft vibration / Turbine throw




Standard Configuration Model:

Bearing vibration: AN3581-00-00-00-00-00

Shaft vibration: AN3582-00-01-00-00-00

Turbine throw: AN3583-00-01-00-00-00

A: The monitor range:

00—Displacement: 0~999μm(Pk-Pk)

01—Velocity: 0~99.9mm/s(rms)

02—Acceleration: 0~9.99g (Pk)

B: External sensor type:

00—Magneto-electric Velocity sensor

01—Proximity Probe sensor( probe with φ8 or φ5 diameter)

02—Ultra-low frequency magneto-electric speed sensor

03—Piezoelectric acceleration sensor


C: Relay output( DPDT):

00— 2 relay output(Alert, Danger)

01— 1 relay output(Alert)

02— No relay output

D: Standard signal output:

00— 4~20mA standard current output

01— 1~5V standard voltage output

02— RS 485 communicate interface output

E: Power supplier:





Note: Please note if you select other options, If you have any questions, please consult the technical department.

Copyright ©2005 - 2022  American ANRY Electron Corp.