te.com 8911 WIRELESS ACCELEROMETER FOR PROOF OF CONCEPT LoRaWAN 868/915MHz SPECIFICATIONS Wireless Piezoelectric Proof of Concept (POC) Accelerometer for Condition Monitoring Programmable, Customer Configurable Corrosion Resistant Stainless-Steel & Polymer Housing Wide Bandwdith to >10kHz Exceptional Long Term Stability Superior Measurement Resolution INTRODUCTION The TE model 8911 wireless accelerometer for POC combines a sensor, data collector, digital signal processor, and radio into one compact, battery-operated device that measures both vibration FEATURES and temperature data. Acceleration and temperature output The model 8911 wireless accelerometer uses the LoRaWAN Compact design, stud mount communication protocol, offering a simple, reliable and secure Up to 5-year battery life means of expanding condition-based maintenance into plant Low power consumption areas where the cost to install wired systems is prohibitive, -20C to +60C making data available to existing process control and information operating temperature systems. 30kHz resonant frequency The model 8911 incorporates a piezo-electric accelerometer which offers a wide bandwidth to >10kHz, outstanding APPLICATIONS measurement resolution and superior long-term stability Remote condition monitoring compared to design using MEMS solutions. Reduced installation The 8911 contains digital signal processing that provides an FFT costs no cables analysis of the vibration being sensed. The output data describes Designed for harsh environments the center frequency, peak value, bandwidth, and percent of the Quick and scalable deployment total spectral content for the eight most significant acceleration Cost effective monitoring peaks in the vibration signal. for large plants Secure and interference Because of this feature, the 8911 directly provides the data most free transmission needed to plot trends and monitor changes in the performance and condition of factory machinery. *This device has not been authorized as required by the rules of the CLICK HERE Federal Communications Commission. CONNECT WITH A SPECIALIST TE CONNECTIVITY SENSORS /// MODEL 8911 03/2021 Page 1 8911 WIRELESS ACCELEROMETER FOR PROOF OF CONCEPT LoRaWAN 868/915MHz (1) ABSOLUTE MAXIMUM RATINGS Parameter Symbol Min Typ Max Unit Notes/Conditions Supply voltage V 3.5 V Replaceable battery dd Storage temperature TS -40 120 C Without battery Shock limit gmax 2000 g ESD -2 +2 kV Human body model (1) Maximum limits the device will withstand without damage ELECTRICAL SPECIFICATIONS (Unless otherwise specified, all parameters are measured at 24C 3.0V applied) Parameters Symbol Min Typ Max Unit Notes/Conditions Replaceable CR123 Power Supply V 3 Vdc dd Battery Average supply current Iavg 35 A Peak supply current Ipk 50 mA During Xmit Resolution 12 bits Sampling Time 5 Sec Battery Life 5 Years One sample/hr (SF7) OPERATING SPECIFICATIONS (ACCELEROMETER) (Unless otherwise specified, all parameters are measured at 24C 3.0V applied) Parameter Symbol Min Typ Max Unit Notes/Conditions Dynamic range 50 g Frequency response 1 10k Hz 1db Frequency response 1 15k Hz 3db Resonant frequency f 30 kHz o Transverse sensitivity 5 % Temperature sensitivity Tc -10 5 % From -20 to 60C Non-linearity 1 % FSO Resolution 12 bits Residual noise 0.06 g RMS (1) OPERATING SPECIFICATIONS (TEMPERATURE SENSOR) (Unless otherwise specified, all parameters are measured at 24C 3.0V applied) Parameter Symbol Min Typ Max Unit Notes/Conditions Temp measurement range T -20 60 C r Accuracy 1.5 C Resolution 12 bits (1) The temperature sensor is located inside the sensor enclosure. As such, it provides the temperature of the sensor interior, not the ambient temperature around the sensor, nor the temperature of surface to which the sensor is mounted. TE CONNECTIVITY SENSORS /// MODEL 8911 03/2021 Page 2