Wireless Temperature Vibration Sensor LZDW261 (Bluetooth)

1 Overview
1.1 Introduction
The LZDW261 wireless vibration sensor (hereinafter referred to as the sensor) adopts Bluetooth wireless communication method, which can directly communicate with Apple, Android series mobile phones and tablets. It is simple and convenient to use, greatly saving manpower and material resources consumed in testing due to repeated deployment of wired data acquisition equipment. It is widely used in vibration data acquisition and industrial equipment point inspection.
The sensor is equipped with a piezoelectric accelerometer, which has a compact structure and small size. It consists of a power module, a data acquisition and processing module, and a wireless transceiver module, and is packaged in a dust-proof and waterproof shell. The sampling rate acceleration of the sensor is 12.8KHz, and the analysis bandwidth can reach 5KHz. It can perform envelope analysis and effectively determine bearing faults.
The data collected by sensors can be wirelessly transmitted in real-time to mobile phones and PADs, ensuring the timeliness and accuracy of data collection. The air transmission rate of the sensor can reach 250Kbps, and the effective outdoor communication distance can reach 10 meters. The sensor is equipped with a rechargeable lithium battery and designed with specialized power management software and hardware. It has a standby power consumption of 50uA and a working power consumption of 25mA, and can be used continuously for more than 24 hours.
1.2 Functions and Features
The sensor is equipped with a built-in uniaxial piezoelectric accelerometer, which uses a hardware integration circuit to measure the total value and waveform of acceleration, velocity, and displacement. The bottom is also integrated with an infrared temperature sensor, which can measure the surface temperature of the device.
Main Features
Ø Bluetooth 4.0 Ble transmission, can directly connect to Apple and Android series phones and tablets for inspection work
Wireless data collection to avoid wiring construction
Ø Total value and waveform of measurable acceleration, velocity, displacement, and temperature signals
Ø Sampling frequency up to 12.8KHz, capable of analyzing bearing faults
Ø Built in rechargeable lithium battery, capable of continuous use for 30 hours
Non contact infrared temperature measurement
Ø H-shaped magnetic suction seat, reliable suction of flat and curved surfaces
Operating temperature: -20 ℃ to 70 ℃
Ø Humidity:<90% RH
Ø Protection level: IP67
Optional explosion-proof type, explosion-proof grade Ex ib IIC T4 Gb


Sensor (Figure 1)
2 Technical Specifications
2.1 Basic Usage
The sensor defaults to standby mode, and the running status indicator light flashes every 12 seconds. When measuring, first connect to the corresponding MAC address of the sensor using your phone or tablet. After successful connection, the running status indicator light remains on (blue). After disconnecting, the indicator light returns to standby mode.
After the sensor connection is completed, use the magnetic suction seat shown in Figure (1) to attach it to the surface of the device, and perform operations such as reading acceleration, velocity, displacement, temperature, etc. through a mobile phone.
If the Bluetooth module fails to search or there are abnormalities during the connection process, the hidden reset button in the figure can be used to reset it. Simply press the reset button once.
2.2 technical indicators

Vibration measurement:	acceleration	0.1～200.0m/s2Peak value, frequency range 10-5kHz
	speed	0.1-200.0mm/s effective value, frequency range 10-11kHz
	displacement	Peak to peak value of 1-2000um, frequency range of 10-11kHz
Vibration accuracy:	±5%
Infrared temperature measurement:	Temperature measurement range: -20~250 ℃
	Temperature accuracy: ± 2 ℃ or 2 ℃, whichever is higher
	Resolution 0.1 ℃
	Distance measurement coefficient 8:1
battery	Rechargeable lithium battery, fully charged, can be used continuously for more than 24 hours
charge:	Micor USB charging, charging time is about 3-5 hours
Explosion proof grade:	Ex ib IIC T4 Gb (explosion-proof type only)
Protection level	IP67
Ambient temperature	-20～70℃
Size:	37mm x 47mm x 60mm (elliptical short side x long side x height)
Weight:	85 grams, excluding charger and magnetic blocking plate

3 Usage environment
Environmental temperature: -20 ℃ to 75 ℃
Relative humidity:<85%
Ø Non corrosive gas
Ø No strong electromagnetic field interference, strong vibration, or shock source
Ø Sensors can operate on industrial equipment sites
4 safety
On site personnel are required to comply with the on-site (workshop) regulations.
5 Fault analysis and troubleshooting

Fault phenomenon	troubleshooting
The sensor magnetic seat has no suction force	Please remove the protective iron sheet on the bottom of the magnetic seat
The status light is not flashing	Low battery voltage should be charged promptly and tried again
Unstable measurement values	Check if the connection between the device and the sensor is secure
Bluetooth cannot connect	Reset button for resetting sensor

If any other faults occur, please record the fault symptoms in detail and contact our company.
6 Maintenance and repair
The warranty period for sensors is three years. Non professionals of our company are not allowed to disassemble the instrument without authorization. Otherwise, internal component damage caused by this is not covered by the warranty.
7 calibration
Sensors involve precision measurement. If frequently used, it is recommended to send the product back to our unit for product calibration every year to ensure the accuracy of instrument measurement values.
8 Transportation and storage
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8.1 transportation
Avoid severe vibration during transportation. If the instrument needs to be returned to the factory for repair, please make sure to send it back together with the instrument box. Otherwise, if the instrument is damaged during transportation, our company cannot be held responsible.
8.2 storage
Sensors should be placed in a clean and dry place.
Attention: The system software of this product can be upgraded. Users may find that the instruments used are slightly different from those explained in this manual, which is a normal phenomenon. If there are any errors, users are welcome to call or write to correct them.