FCC ID: 2A85PA85X1N Wireless Vibration Sensor

WIRELESS VIBRATION SENSOR 85X1N SERIES USER MANUAL Doc# 20023687-27 Revision 0.1 85X1N WIRELESS ACCELEROMETER USER MANUAL REVISIONS DATE 11/02/2022 Revision Change Description Prepared by Rev 0.1 Initial draft NEW Version Approver PRS 20023687-27 Rev. 0.1, 2022-11-02 2 85X1N WIRELESS ACCELEROMETER USER MANUAL Contents 1. Introduction .......................................................................................................................................... 3 2. General Description .............................................................................................................................. 4 3.1 Advertisement Mode .................................................................................................................... 4 3.1.1 3.1.2 3.1.3 At power on .......................................................................................................................... 4 1 hours after power on ......................................................................................................... 4 Special event ......................................................................................................................... 5 3.2 Connected Mode .......................................................................................................................... 5 3.3 MODES OF OPERATION ................................................................................................................. 6 3.4 3.5 3.6 DATA COLLECTION ........................................................................................................................ 6 DATA PROCESSING ........................................................................................................................ 7 BLUETOOTH LOW ENERGY ............................................................................................................ 9 4 DFU Mode ........................................................................................................................................... 10 5 Magnetic Switch .................................................................................................................................. 11 6 7 LED Indicator ....................................................................................................................................... 13 Battery ................................................................................................................................................. 13 7.1 7.2 7.3 7.4 7.5 BATTERY TYPE ............................................................................................................................. 13 BATTERY LIFE ............................................................................................................................... 13 BATTERY REPLACEMENT ............................................................................................................. 13 BATTERY ESTIMATION ALGORITHM............................................................................................ 14 CURRENT CONSUMPTION PROFILES ........................................................................................... 15 8 Dimensions .......................................................................................................................................... 16 9 Mounting Considerations & Accessories ............................................................................................ 16 10 11 Intrinsic Safety................................................................................................................................. 18 REGLUATORY STATEMENTS ............................................................................................................ 18 FCC and IC ............................................................................................................................................... 18 12 Ordering Information ...................................................................................................................... 21 1. Introduction 20023687-27 Rev. 0.1, 2022-11-02 3 85X1N WIRELESS ACCELEROMETER USER MANUAL TE Connectivitys 85X1N Series Wireless Vibration Sensors encompass model families 8511N and 8531N. These sensors combine a 1-axis (8511N) or 3-axis (8531N) accelerometer respectively, a data collector, and a radio into one compact unit. The sensors are battery-operated device that measures both vibration and temperature data. The models were designed for hash environment and use BLE communication protocols as the main mean of communication. 85X1N Series incorporate a piezo-electric accelerometer which offers a wide bandwidth to

>15kHz, outstanding measurement resolution and superior long-term stability compared to design using MEMS solutions. All models contains digital signal processing capability that provides an FFT analysis of the sensed vibration. The output data describes signal power and peak to peak information. Because of this feature, 8511N and 8531N models directly provide data most needed to plot trends and monitor changes in the performance and condition of factory machinery. 2. General Description The 85X1N Series Wireless Vibration sensors have two BLE modes:

Advertisement Mode: provides data continuously Connected Mode: advanced mode for configuration and special mode. Each advertisement allows the opportunity to user to switch to Connected mode. Its the only way to go into connected mode. 3.1 Advertisement Mode The products have several advertisement frequencies varying upon time, configuration and hardware event:

3.1.1 At power on When the device is powered on, a yellow LED blinks to confirm the proper battery insertion. From the sensor startup and for 1 hours, the device advertise every 1 sec. This allows user to configure the product by switching to connected mode. A measurement is performed at measurement interval. 3.1.2 1 hours after power on After every measurement, the device will advertise at 1s interval for 15 seconds. This will give 20023687-27 Rev. 0.1, 2022-11-02 4 85X1N WIRELESS ACCELEROMETER USER MANUAL multiple chances to the gateway to connect to the device. After 15 seconds, the device will advertise at 10s interval till the next measurement. During, this phase, the connection could be more difficult. This 10 seconds advertisement can be deactivated by user (see Advertising configuration: Measure Trig) Between two measurements, the data into the advertisement frames is the same. The payload is only updated after every measurement interval. After a measurement, if a threshold is reached, the system will advertise every 10s after the 15s period. Advertisement will stop when user clear the event. 3.1.3 Special event If the advertisement interval is too long, it could be very difficult to switch to connected mode. So we offer the opportunity to advertise more often when the magnet is used. The magnet event will trig a measurement and the device will advertise every second during 1hour. 3.2 Connected Mode User can connect to the product. It all to configure, get access to special function and update firmware Product comes with 3 different BLE connected modes which are listed below:

Operating mode Description Standard User mode to configure the sensor and activate some specific function only available when connected Condition None 20023687-27 Rev. 0.1, 2022-11-02 5 85X1N WIRELESS ACCELEROMETER USER MANUAL DFU Factory Mode used during FW update. Mode used by manufacturing. It allows sensor calibration and offer dedicated test-mode functionalities for RF testing, calibration, and current consumption measurements. OTA update Factory entry 3.3 MODES OF OPERATION The device operation can be summarized by the following state machine diagram. 3.4 DATA COLLECTION 20023687-27 Rev. 0.1, 2022-11-02 6 85X1N WIRELESS ACCELEROMETER USER MANUAL Sensor measurements are performed and transmitted at a configurable interval from 1 min up to 24 hours. This is driven by the Measurement interval parameter. Upon wake-up, the device powers the sensing element and waits for about 3 seconds to let the accelerometer boot and stabilize its output. A measurement consists of reading the battery level, temperature, and a set of 4096 acceleration values at a configurable rate. Data Battery level Temperature Acceleration Unit

C mg Accessibility BLE BLE BLE 3.5 DATA PROCESSING The data processing signal chain transforms the acceleration raw data into frequency peaks. 20023687-27 Rev. 0.1, 2022-11-02 7 85X1N WIRELESS ACCELEROMETER USER MANUAL Acceleration data is collected at a chosen sampling frequency. Raw data passes through an anti-aliasing filter. Once a set of acceleration readings is measured (4096 points), the embedded algorithm removes the DC signal (to remove the bias voltage of the sensing element) and multiplies the results by the sensor element calibration sensitivity (mV/g). The algorithm then applies a Hann window to the signal and converts it into a normalized FFT spectrum. Finally, a peak search algorithm extracts the most significant peaks from the spectrum. Certain data is saved for each of the peaks:

Parameter Peak Frequency Peak RMS magnitude Ratio Description Frequency of the peak (Hz) Single frequency peak PMS magnitude (g) Ratio of energy. Maximum peak magnitude plus associated bins divided by total spectrum energy. Note that only Peak values are accessible by the user. Raw data and raw FFT spectrum are stored for internal computation and are not available outside the sensor. From this point, several customer defined options are available to further process the data into useful output information. The customer can establish and configure up to eight windows across the FFT spectrum. For each window, the user can configure the following parameters:

Parameter Peak number Number of bins Description Number of peaks to be found (0 to 24) Number of bins around the main beam to be integrated into the ratio output. This parameter can be used to filter side lobes and avoid multiple peaks found around the same frequency Minimum frequency Maximum frequency Minimum frequency of the search window Maximum frequency of the search window These define the bandwidth of each window 20023687-27 Rev. 0.1, 2022-11-02 8 85X1N WIRELESS ACCELEROMETER USER MANUAL By default, no windows have been established or configured. The peak search covers the full spectrum. Typical FFT spectrum showing the highest eight peaks. It is possible to program up to 8 custom windows to define several regions of interest. Any peak ouside the windows will be ignored. Typical FFT spectrum showing eight peaks and 3 windows 3.6 BLUETOOTH LOW ENERGY 20023687-27 Rev. 0.1, 2022-11-02 9 85X1N WIRELESS ACCELEROMETER USER MANUAL The device includes a Bluetooth 5.0 Low Energy compliant interface. This is a low power communication technology which should be used at short distances. It makes the 85X1N a connectable beacon which acts as a peripheral by default and switches to a server role (pairing mode) once a remote device (central) is connected. The upload interval can be configured by the customer for any time between one minute and 24 hours (in one-minute steps). Data upload consists of this information:

Battery status Sensor internal temperature All FFT data as configured by the user Raw sensor data (time domain accelerometer signal) is not available for upload All customer configurable parameters can be adjusted via LoRaWAN using a data download:

Reading/upload interval Number of peaks Number of bins around the peaks Number of windows Window minimum frequency Window maximum frequency 4 DFU Mode DFU mode should be used to upgrade the sensor firmware. It is accessible from the standard mode. The new firmware to be loaded must be signed by TE. 20023687-27 Rev. 0.1, 2022-11-02 10 85X1N WIRELESS ACCELEROMETER USER MANUAL The DFU works with a single bank only. This means that if the firmware update is interrupted

(power cut off or BLE disconnection), the application firmware will be corrupted, and the sensor will stay in DFU mode. The user will have to re-try the upgrading process. Note that the DFU MAC address is the sensor MAC address +1. 5 Magnetic Switch The 85X1N has an internal reed switch. This switch is activated when a strong magnet is close to the magnetic sensor location. The magnetic switch location is indicated by the magnet icon on the plastic housing. The magnet must be of sufficient strength and proximity to create a magnetic field of 25 mT at the switch location. Two different functions are available depending on the user action:

User action Function Short tap Activates BLE for another one hour plus trigs a new measurement. Hold magnet for 10+

seconds Resets the sensor. LED One short blink. If user holds the magnet close to the switch for a longer duration, the LED will blink faster. Remove the magnet to only initiate a transmission. Else it going to initiate a sensor reset. Wait for at least 10 seconds, to see the very fast blink. Release the magnet once a very long orange led appears 20023687-27 Rev. 0.1, 2022-11-02 11 85X1N WIRELESS ACCELEROMETER USER MANUAL LED indicator 20023687-27 Rev. 0.1, 2022-11-02 12 85X1N WIRELESS ACCELEROMETER USER MANUAL 6 LED Indicator The orange LED indicates the state of the 85X1N. Battery insertion Magnet event Maintaining Magnet

<3s

[3s-10s]

>10s 7 Battery 7.1 BATTERY TYPE Led Behavior ON during 2s ON during 200ms Slow blinking Fast blinking OFF -> reboot To meet various certification requirements, the following battery must be used:

Parameters Manufacturer Reference Technology Nominal voltage Capacity at 20C Operating temperature range Typical value SAFT LS 17330 Primary lithium-thionyl chloride (Li-SOCl2) 3.6 V 2100 mA

- 60C/+ 85C 7.2 BATTERY LIFE Depending on customer settings (measurement interval) battery life could go up to 10 years. Lower will be the number of measurements per day, higher will be the battery life. 7.3 BATTERY REPLACEMENT The 85X1Ns battery must be replaced if depleted. Unscrew the plastic housing and remove it from the base. Carefully use a small tool (such as a flat screwdriver) to remove the battery. Note that it MUST be replaced by the same battery type as shown above. Substitute batteries may damage and/or bring uncontrolled behavior to the sensor. Double check the polarity and then insert the new battery inside the holder. Re-attach the plastic cover on the sensor. Refer to the Installation Manual (Doc# 20023687-24} for specific details regarding battery installation and replacement. When complete, the battery life estimator in the firmware must be reset to a full battery status. 20023687-27 Rev. 0.1, 2022-11-02 13 85X1N WIRELESS ACCELEROMETER USER MANUAL 7.4 BATTERY ESTIMATION ALGORITHM 20023687-27 Rev. 0.1, 2022-11-02 14 85X1N WIRELESS ACCELEROMETER USER MANUAL 7.5 CURRENT CONSUMPTION PROFILES 20023687-27 Rev. 0.1, 2022-11-02 15 85X1N WIRELESS ACCELEROMETER USER MANUAL 8 Dimensions 9 Mounting Considerations & Accessories A solid mounting method is required to get optimum performance from the accelerometer. Any loose parts or unsecured mounting features will introduce noise and corrupt the signals of interest. Shown below are six different mounting options available for the 85X1N accelerometer. 20023687-27 Rev. 0.1, 2022-11-02 16 85X1N WIRELESS ACCELEROMETER USER MANUAL For the adhesive mounting stud, secure with a rigid adhesive such as epoxy or cyanoacrylate. Do not use pressure sensitive adhesives or foam tapes. For the magnetic mounting stud, remove the keeper prior to attachment. The magnetic mounting will have a 30 lb pull strength when attached to a ferrous surface. Note Some mounting accessories may be supplied with sample orders. For production deliveries, desired mounting accessories must be ordered as a separate item. 20023687-27 Rev. 0.1, 2022-11-02 17 85X1N WIRELESS ACCELEROMETER USER MANUAL 10 Intrinsic Safety 8511N and 8531N Wireless Sensors with characteristic (EX) in model name are certified for Intrinsic Safety to the following classification:

IS Class I, Div1, Groups A, B, C, and D;

Class I Zone 0, AEx ia IIC T4 Ga;

Ex ia IIC T4 Ga;

ll 1 G Ex ia IIC T4 Ga Please see section 12 for details on how to order. 11 REGLUATORY STATEMENTS FCC and IC This Radio Equipment is Certified for FCC (US) and ISED (Canada). This equipment does not support simultaneous transmissions. Changes or modifications not expressly approved or authorized by TE Connectivity for compliance could void the user's authority to operate the equipment. FCC Warning:

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does not cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to correct the interference by one or more of the following measures:

Re-orient or relocate the receiving antenna 20023687-27 Rev. 0.1, 2022-11-02 18 85X1N WIRELESS ACCELEROMETER USER MANUAL Increase the separation between the equipment and the receiver Connect the equipment to an outlet on a circuit that is different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Industry Canada (IC) Warning:

This device complies with ISED Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Le prsent appareil est conforme aux CNR dISED Canada applicables aux appareils radio exempts de licence. Lexploitation est autorise aux deux conditions suivantes : (1) lappareil ne doit pas produire de brouillage, et (2) lappareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible den compromettre le fonctionnement. IMPORTANT NOTE:

Radiation Exposure Statement:

This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. Dclarationd'exposition aux radiations:

Cetquipementestconforme Canada limitesd'exposition aux radiations dans un environnement non contrl. Cetquipementdoittreinstall et utilis distance minimum de 20cm entre le radiateur et votre corps. 20023687-27 Rev. 0.1, 2022-11-02 19 85X1N WIRELESS ACCELEROMETER USER MANUAL EU Conformity The products below were tested by approved agencies and found compliant with EU regulatory standards. Model Families: 8511N & 8531N Product Description: Wireless Vibration Sensor Manufacture/Brand: TE Connectivity Ltd Manufacturer:

Measurement Specialties (China) LTD No 26 LangShan Road 518057 Shenzhen-Nanshan District, China European Contact:

TE Connectivity Sensors France 4 Rue Gaye Marie 31027 Toulouse France 20023687-27 Rev. 0.1, 2022-11-02 20 85X1N WIRELESS ACCELEROMETER USER MANUAL 12 Ordering Information Model Number:

8 5 1 N -

Sensor Axis 1 Uniaxial 3 Triaxial Certification NX None EX Explosive Atmospheres:

ATEX/IECEx/US/CANADA IS CL I, DIV 1, GRP A, B, C, D, T4;

CL 1. ZN 0, AEx ia IICT4 Ga;

II 1 G, Exia IIC T4 Ga;

Part Number AC-D04210 AC-A04209 AC-D03636 AC-D03665 AD-D03664 Mounting Accessories Description Adhesive Mounting Stud Magnetic Mounting Stud x 28 by x 28 Double-ended Male Stud x 28 by M6 Double-ended Male Stud x 28 by M5 Double-ended Male Stud 20023687-27 Rev. 0.1, 2022-11-02 21 85X1N WIRELESS ACCELEROMETER USER MANUAL 20023687-27 Rev. 0.1, 2022-11-02 22

For all Models containing 8911N and 8511N in their name convention Trademark Label Product Label EX Label NX Label 2022 TE Connectivity. Confidential & Proprietary. Do not reproduce or distribute externally including non-authorized representatives and distributors. Create a sustainable future by limiting print copies, and recycling paper. For all Models containing 8931N and 8531N in their name convention Trademark Label Product Label EX Label NX Label 2022 TE Connectivity. Confidential & Proprietary. Do not reproduce or distribute externally including non-authorized representatives and distributors. Create a sustainable future by limiting print copies, and recycling paper.

District Shenzhen 518057 No. 26 Langshan Road Shenzhen High-Tech Park (North) Nanshan i Tel (+1) 234 567 8901 connectivity Measurement Specialties (China), Ltd. A TE Connectivity Company Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: Dec. 09, 2022 Subject: Request for Confidentiality FCC ID: 2AS5PA85X1N To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFRO.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Short-Term Confidentiality | Confidentiality D Label/Location No No Attestation Statement No No External Photos No px Block Diagram x Schematics x Test Report No No Test Setup Photos No Xd Users Manual kl nternal Photos Xx Parts List / Tune Up x RE Exposure Info Operational Description kX Cover Letter(s) No No SDR Software / Security Info No Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents will be harmful to our company and would give competitors an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, fou Vi. Paul Li Staff R&D Product Development Engineering

Declaration for model numbers Hereby, We Name:

Address: No. 26 Langshan Road Shenzhen High-Tech Park (North) Nanshan District Shenzhen Measurement Specialties (China), Ltd. 518057 China City:

Country: China Shenzhen declares that this equipment:

Product description: Wireless Vibration Sensor Type designation(s): 8511N-EX,8511N-NX ,8531N-EX, 8531N-NX Trademark:

TE Connectivity The differences between all model numbers are in the following table:

Product Description or Discrepancy ATEX product: 8511N-EX is uniaxial accelerometer. 8531N-EX is triaxial accelerometer. Non-ATEX product: 8511N-NX is uniaxial accelerometer. 8531N-NX is triaxial accelerometer Model 8511N-EX and 8531N-EX were chosen for final test The circuit design and layout between of all model numbers are the same. Name: Paul Li Title: Staff R&D/Product DVL Engineer Date: Dec.09.2022 Signature of applicant:

C5266091_X8_Ed.1 Letter of Authorization Measurement Specialties (China), Ltd. Company: Measurement Specialties (China), Ltd. Address: No. 26 Langshan Road, Shenzhen High-Tech Park (North) Nanshan District, Shenzhen 518057, China Product Name: Wireless Vibration Sensor Model Number: 8511N-EX, 8511N-NX, 8531N-EX, 8531N-NX FCC Identifier: 2A85PA85X1N We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Paul Li Date: Dec.09.2022 Title: Staff R&D/Product DVL Engineer Signature of applicant:

1/1