Monitor system

1. Module Overview

AN5800/20 series Shaft Position monitoring module receives signals from two Proximity sensor; 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 Shaft Position or differential expansion.

2. Purpose

Online monitoring and protection of rotary machine shaft position;

Online monitoring and protection of rotary machine expansion difference.

3. Functions

Digital display unit: To display real-time value;

Serial communication interface: Parameter configuration and digital signal bus communication through AN5800 / CFG configuration software ;

Standard signal output: 4-20mA;

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

LED indicator: To display various statuses;

Buffer interface: The front panel BNC connector and rear terminal buffer output (Sensor original signal) are convenient to connect the data acquisition system to collect dynamic signals.

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;

Use forward board and back board plug-in module type structure design, after the board (power supply and relay output) and the former board (signal processing, the host) physical isolation, through case motherboard more redundant connectors (needle) in parallel connection, stable and reliable.

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;

Air blowers;

Rotary machines like Water turbines.

6. Technical Specifications


Proximity sensor: Proximity probe: Φ8 /Φ11 /Φ25 /Φ50 probe

Shaft position Sensitivity:

2mm: 7.87mV/μm (200mV/mil)

4mm: 3.94 mV/μm (100mV/mil)

25mm: 0.394 mV/μm (10mV/mil)

Expansion difference Sensitivity:

12mm: 0.787mV/μm (20mV/mil)

25mm: 0.394 mV/μm (10mV/mil)

Output voltage: -2 ~ -18VDC;

GAP voltage: -10VDC.

Range of measurement:

Shaft position: 2.00/4.00mm; Resolution: 0.01mm; Precision: 0.5%±0.01mm.

Expansion difference: 12.00/25.00mm; Resolution: 0.01mm;

Precision: 0.5%±0.01mm.

Power supply:

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

Overall power consumption: Less than 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, 1A/220VAC, double-pole double-throw (DPDT);

Alarm-delay: 0.1-60S, default: 0.5S;

Alert lock: Defaulting to non-locking.

Physical property:

Before the board: 

Size: 248(L) ×40(W)×262(H)mm;9.8(L)×1.5(W)×10.3(H)in;

Weight: 0.6kg.

After the board: 

Size: 128(L)×40(W)×262(H)mm;9.8(L)×1.5(W)×10.3(H)in;

Weight: 0.3kg.

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: CE;

Protection level: IP56;

Anti-electromagnetic interference: EMC/LVD

Refer to EN55011\ EN 61010\ EN50081\EN50082.

7. Ordering information

AN5800/21/22- Shaft position/ Expansion difference



Standard Configuration Model:

Shaft position:

AN5800/21-00-00-00 (assorted with AN1808 sensor)

AN5800/21-01-00-00 (assorted with AN1811 sensor)

AN5800/21-03-03-00 (assorted with AN1850 sensor)

Expansion difference:

AN5800/22-00-02-00 (assorted with AN1825 Proximity Sensor)

AN5800/22-00-03-00 (assorted with AN1825 Proximity Sensor)

A: The channel number

00—2 channe

01-- 1 channel (channel A on top of module by default)

B: Sensor type:

00-- AN1808 Proximity sensor(φ8 probe)

01--AN1811 Proximity sensor(φ11 probe)

02-- AN1825 Proximity sensor(φ25 probe)

03-- AN1850 Proximity sensor(φ50 probe)


C: Relay output (DPDT):

00—Three relay dry contact output (high - low - Alert, high high - low low- Danger, Not-ok)

01--Double relay dry contact output (high - low - Alert and high high - low low- Danger)

02--Single relay dry contact output (high - low - Alert or high high - low low- Danger)

03-- Double relay dry contact output (high - Alert and high high - Danger)

04--No relay output


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