Instruction manual for bearing vibration probe

SDJ-SG-2 magneto electric vibration velocity sensor vibration probe

working principle

Vibration velocity sensors are mainly installed on the bearing covers of various rotating mechanical devices, such as turbines, compressors, fans, and pumps. It is an electromagnetic sensor that outputs voltage by cutting magnetic field lines with a moving coil. The output voltage is proportional to the vibration velocity, hence it is called a vibration velocity sensor. Therefore, it has the characteristics of not requiring power supply during operation and easy installation. Installation position: Installed vertically or horizontally on the tested vibration point.

Connect the vibration monitoring device to output a 4-20mA current signal

The vibration speed sensor is equipped with LH6012 vibration monitoring and protection device, HZD-B-9F vibration transmitter, which can measure the bearing vibration of various rotating machinery, detect various faults of rotating machinery early, output standard 4-20mA current signal, and send it to PLC, DCS, DEH system, etc. It can achieve continuous and long-term vibration monitoring and protection of rotating machinery, suitable for vibration measurement and protection of large mechanical equipment such as steam turbines, fans, water pumps, and coal mills.

Performance advantages

Good stability and reliability, good sealing, easy installation, and long service life.

Technical Specifications

Electrical indicators:

Sensitivity: 30mv/mm/s ± 5%

Frequency response: 10 to 1000 Hz

Natural frequency: 10Hz

Measurable amplitude: ≤ 2000 μ m (P-P)

High acceleration: 10g

Physical indicators:

Dimensions: φ 35 × 80mm

Weight: Approximately 350g

Measurement direction: vertical or horizontal

Environmental indicators:

Temperature: -30℃To+100℃Relative humidity ≤ 90%

SDJ-SG-2 magneto electric vibration velocity sensor vibration probe

Function Description:

The measured value and alarm set value can be displayed separately on the LED digital tube.

When the alarm setting value is exceeded, the alarm indicator light will turn on, and at the same time, a switch signal will be output on the rear panel to protect the monitored equipment.

Alarm setting delay adjustment, ranging from 1-60 seconds, to prevent false alarms caused by on-site interference.

Equipped with a current output interface, it can be connected to devices such as computers, DCS, PLC systems, and paperless recorders.

It has power up and power down detection functions, sensor disconnection detection functions, and cuts off alarm and shutdown output circuits, effectively suppressing instrument false alarms.

The vibration intensity (vibration intensity) and vibration amplitude (vibration displacement) can be freely switched.

Electrical indicators:

Sensor input: magneto electric speed sensor

Measurement range: 0-500 μ m pk pk

0～50.0mm/s rms

Measurement accuracy: Linear error ≤± 1% (full-scale value)

Display mode: digital tube display

Frequency response: 1.0-300Hz

Current output: 4-20mA; drives a load of 500 Ω

Alarm contact capacity:AC220V/3A，DC28V/3A

Working power supply: 220VAC ± 10% 50Hz power consumption ≤ 10W

Physical indicators:

Overall dimensions:

Disk mounted table: 160 (width) x 80 (height) x 160 (depth) mm

Hole size: 152 (width) x 76 (height) mm

Wall mounted surface: width 190 x height 290 x thickness 92 (mm);

Installation size: Bottom 170 x Height 272 (mm)

Environmental indicators:

Temperature: -20℃To+60℃Relative humidity ≤ 90%

HZD-B-9F vibration transmitter

Introduction:

With the development of control technology, DCS and PLC systems have been widely applied in automation control. Previously, the functions of digital display instruments could be implemented by integrated systems, and in many cases, only standard 4-20mA current signals were required to be sent to PLC or DCS systems. Our company has developed a series of transmitters with stable performance that meet the system requirements of PLC or DCS, greatly simplifying the online status monitoring system and reducing its cost.

HZD-B-9FVibration transmitter is used in conjunction with vibration velocity sensor, mainly for detecting the vibration of rotating machinery, such as casing vibration, bearing vibration, mechanical vibration, etc; Monitor vibration changes caused by rotor imbalance, misalignment, loose components, damaged rolling bearings, gearbox damage, etc. Suitable for large rotating mechanical equipment such as steam turbines, water turbines, fans, compressors, oxygen concentrators, motors, pumps, gearboxes, etc., especially suitable for retrofitting old units.

Main functions:

Vibration monitoring and protection of large rotating machinery such as steam turbines, water turbines, fans, compressors, oxygen concentrators, motors, pumps, gearboxes, etc.

Electrical indicators:

Power supply: 24VDC,Not exceeding 36V (220VAC or other specifications can be customized according to demand).

Input signal: LH100 series vibration speed sensor signal.

Sensitivity: 20mv/mm/s

Frequency response: 10-1000Hz

Transmission output: 4-20mA (or 1-5V) active

Output load: ≤ 500 Ω

Accuracy: ± 1% (full scale)

Physical indicators:

Overall dimensions:

Dimensions: 70W × 120L × 75Hmm

Installation method: 35mm rail installation

Weight: Approximately 650g

Environmental indicators:

Temperature: Operating temperature -25 degrees Celsius℃To+65℃Storage temperature -40℃Up to+70℃。

Relative humidity ≤ 90%There are no corrosive or strong magnetic fields around.