830M1-0025-TRAY-PACKAGED

te.com 830M1 TRIAXIAL CONDITION MONITORING ACCELEROMETER • • • • • • Triaxial Piezoelectric Accelerometer ±25g to ±2000g Dynamic Ranges Wide Bandwidth to 15,000Hz Superior Resolution to MEMS Devices Circuit Board Mountable, Reflow Solderable Low Cost, Superior Value The Model 830M1 is a low cost, triaxial board mountable accelerometer designed for embedded condition monitoring and preventive maintenance applications. The piezoelectric (PE) accelerometer is available in ranges from ±25g to ±2000g and features a flat frequency response up to >15kHz in all three axes. The model 830M1 accelerometer three independent stable piezoceramic crystals in shear mode with low power electronics, sealed in a fully hermetic LCC package. FEATURES • • • • • • • Temperature Sensor Included Amplified ±1.25V Signal Output 3.3 to 5.5Vdc Excitation Voltage Hermetically Sealed LCC Package Piezo-Ceramic Crystals, Shear Mode -40° to +125°C Operating Range Small PCB Footprint APPLICATIONS • • • • • • • Machine Health Monitoring Predictive Maintenance Installations Embedded Vibration Monitoring Impact & Shock Monitoring Data Loggers Bearing Installations Security Monitoring The PE technology incorporated in the 830M1 accelerometer has a proven track record for offering the reliable and long-term stable output required for condition monitoring applications. The accelerometer is designed and qualified for machine health monitoring and has superior resolution, dynamic range and bandwidth compared to MEMS devices. An RTD temperature sensor is included inside the LCC package should the intended application require both a vibration and temperature sensor signal. For single axis measurements, TE Connectivity also offers other accelerometer models with the same outstanding performance specifications. CLICK HERE › CONNECT WITH A SPECIALIST TE CONNECTIVITY SENSORS /// MODEL 830M1 10/2022 Page 1 830M1 TRIAXIAL ACCELEROMETER ABSOLUTE MAXIMUM RATINGS (1) Parameter Supply voltage(2) Storage temperature Shock limit (any axis) ESD Symbol Vdd TS gmax Min 1.5 -40 Typ 3.3 Max 5.5 125 5,000 +2 -2 Unit V °C g kV Notes/Conditions Human body model (1) Maximum limits the device will withstand without damage (2) With 1.5V-2.5V excitation, full-scale range will be limited. So 3.3V min recommended. OPERATING RANGES & NOISE - ACCELEROMETER (Unless otherwise specified, all parameters are measured at 24°C @ 3.3V applied) Measurem ent Range (g) ±25 ±50 ±100 ±200 ±500 ±1000 ±2000 (1) 2Hz Sensitivity mV/g 50.0 25.0 12.5 6.3 2.50 1.25 0.63 NonLinearity (%FSO) ±2 ±2 ±2 ±2 ±2 ±2 ±2 Residual Noise(1) (mg RMS) 2.9 5.9 11.7 23.2 58.5 117 234 Spectral Noise (mg/√Hz) 10Hz 100Hz 1kz 10kHz 0.15 0.29 0.58 1.16 2.92 5.84 11.7 0.07 0.13 0.27 0.53 1.34 2.68 5.36 0.03 0.05 0.09 0.18 0.52 1.04 2.08 0.02 0.05 0.09 0.18 0.45 0.90 1.80 to 10 kHz ELECTRICAL SPECIFICATIONS (Unless otherwise specified, all parameters are measured at 24°C @ 3.3V applied) Parameters Excitation voltage Zero g output voltage Average supply current Output impedance Warm-up time Symbol Vdd Min 3.3 Typ Max 5.5 Unit Vdc 100 1 µA Ω Sec Vdd/2 200 Iavg Rout Notes/Conditions 50% of applied voltage OPERATING SPECIFICATIONS - ACCELEROMETER (Unless otherwise specified, all parameters are measured at 24°C @ 3.3V applied) Parameter Full scale output 0.0g output voltage (bias V) Frequency response Frequency response Resonant frequency Transverse sensitivity Calibration Symbol TE CONNECTIVITY SENSORS /// MODEL 830M1 Min 6 2 30k Typ ±1.25 Vdd/2 Max Unit V Notes/Conditions 10k 15k Hz ±1db Hz ±3db Hz 8 % All Axes CS-SENS-0100 NIST Traceable Amplitude Calibration at 80Hz All parts are shipped with calibration data 10/2022 Page 2 830M1 TRIAXIAL ACCELEROMETER OPERATING SPECIFICATIONS – RTD TEMPERATURE SENSOR (1) (Unless otherwise specified, all parameters are measured at 0°C) Parameter RTD resistance Tolerance Symbol R0 Calculated tolerance Temperature coefficient Temperature range Self-Heating coefficient(2) Long term stability Measurement current(2) TCR EK ΔR I Min Typ Max 997.81 1000 1002.20 -0.12 +0.12 ±(0.4+0.007 x |T|) ±(0.4+0.028 x |T|) 6100 6178 6240 -40 125 1.4 1.7 2.0 ±0.1 0.2 5 Unit Ω % °C °C ppm/K °C mW/K % mA Notes/Conditions @ 0°C Class B 0 to +125°C -40 to 0°C @ 0°C 1k hrs @ 150°C (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. (2) Self heating effects must be taken into account. See additional information in this data sheet. ENVIRONMENTAL SPECIFICATIONS Parameter Operating temperature Storage temperature Ambient humidity Ingress protection Symbol IP Media compatibility Weight TE CONNECTIVITY SENSORS /// MODEL 830M1 Min -40 -40 0 68 Typ Max 125 125 100 Unit °C °C % Notes/Conditions Hermetic Package External exposed surfaces: Alumina Gold Au/Sn Solder 3.3 grams 10/2022 Page 3 830M1 TRIAXIAL ACCELEROMETER BLOCK DIAGRAM IR REFLOW TEMPERATURE PROFILE TE CONNECTIVITY SENSORS /// MODEL 830M1 10/2022 Page 4 830M1 TRIAXIAL ACCELEROMETER DIMENSIONS BOTTOM VIEW CONNECTION TABLE Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 Definition X axis output Y axis output Z axis output N/C N/C N/C GND RTD temp out Vdd N/C N/C N/C N/C connections – do not connect to the circuit TE CONNECTIVITY SENSORS /// MODEL 830M1 PC board solder pad layout and dimensions 10/2022 Page 5 830M1 TRIAXIAL ACCELEROMETER TYPICAL ACCELEROMETER FREQUENCY RESPONSE CURVE Graph 1 TYPICAL ACCELEROMETER THERMAL SHIFT OF SENSITIVITY Graph 2 TE CONNECTIVITY SENSORS /// MODEL 830M1 10/2022 Page 6 830M1 TRIAXIAL ACCELEROMETER MOUNTING CONSIDERATIONS Accelerometers are used to measure vibration and motion of various pieces of equipment and their components. To obtain the most faithful reproduction of the movements, a solid mounting method is required. The model 830M1 is designed to surface mount on a PC board with the primary attachment being the connection solder pads. Although it is recommended that several of the contacts (pins 4-6 & 10-12) not be connected to any part of the electrical circuit, mating solder pads can be added to the PC board but then left unconnected. Soldering all contacts of the accelerometer will provide the most solid mounting and best measurement results. Rigid support for the accelerometer PC board will also help to improve the quality of measurement signals. Ultimately, the accelerometer must move at the same frequencies and displacements as the object of interest. PC board mounting that’s not rigid enough will introduce unwanted noise and resonant frequencies into the measurement signal. Figure 1 shows an example of a poorly mounted accelerometer. With no support close to the sensor, the PC board will flex and vibrate at its own resonant frequency much like a trampoline. This will introduce unwanted resonant peaks into the frequency range of interest making accurate data collection difficult. Figure 2 shows a better mounting design that provides support very close to the sensor and helps to eliminate unwanted vibrations and noise. If the PC board is mounted on standoffs, locate at least two standoffs as close to the accelerometer as possible. This will help stabilize the accelerometer mounting surface and help to ensure that faithful vibration and motion get transferred to the sensor. Figure 3 shows the addition of a rigid mounting block directly between the accelerometer PC board and the vibrating object. This design provides good coupling. Use a rigid adhesive on both mating surfaces of the block for good mechanical coupling. Figure 4 shows the PC board attached directly to the vibration source. Use a rigid adhesive to improve the transmission of high frequency vibrations and acoustic energy. Soft or elastic adhesives (pressure sensitive tapes, RTVs, pliable glues, etc.) tend to dampen and absorb higher frequency excitations. Don’t use them. Figure 4 Figure 4 Figure 4 Figure 4 TE CONNECTIVITY SENSORS /// MODEL 830M1 10/2022 Page 7 830M1 TRIAXIAL ACCELEROMETER ORIENTATION CONSIDERATIONS Accelerometers are designed to do unidirectional motion sensing. A single axis accelerometer will be sensitive to motion and acceleration in a single direction only. The 830M1 is able to sense and measure motion and acceleration in all three orthogonal axes (X, Y, Z) and provides analog voltage outputs that represent the signal magnitude in each axis. The accelerometer must be properly oriented during assembly into the application to ensure that it will accurately sense the magnitude of vibration and motion in the proper axes. As shown in the detailed dimension drawing, each sensing axis is aligned to be parallel with the external surfaces of the accelerometer package. When the sensor is designed into an application, it’s position must be oriented to align with the desired measurement directions of the customer product. There are many places in an application where alignment errors can appear. The 830M1 is mounted on a PC board and must be carefully aligned to it. The PC board is part of a subsystem and must be carefully aligned there also. And finally, the subsystem is part of the overall product and must be aligned to that. Each of these mounting interfaces can be a source of mis-alignment errors and when summed can become significant. For the 830M1 accelerometer, there are two types of alignment errors – rotational and tilt. Figures 5 & 6 show how these occur. Figure 5 Figure 6 Both types of misalignment errors result in incorrect output voltages for vibration amplitude. The output error will be proportional to the cosine or 1-cosine of the error angle θ. In figure 5, if the acceleration or vibration is along the X axis, a rotational misalignment error will decrease the X axis signal by the cosine of the error angle and increase the Y axis signal by 1-cosine of the error angle. The Z axis signal will not change. In figure 6, if acceleration is again along the X axis, and the X axis is tilted, then the error will again decrease the X axis signal by the cosine of the error angle and increase the Z axis signal by 1-cosine of the error angle. The Y axis signal will not change. TE CONNECTIVITY SENSORS /// MODEL 830M1 10/2022 Page 8 830M1 TRIAXIAL ACCELEROMETER ACCELEROMETER OPERATION AT REDUCED VOLTAGES The 830M1 accelerometer is designed to provide the specified operation with the applied power voltage in the range of 3.3 to 5.5 VDC. The sensor can also provide limited operation with applied voltages down to 1.5V. The only parameter affected by a reduced input voltage is the maximum output amplitude for each g range. The internal amplifier is designed to have a constant gain for each g range and will produce a maximum output signal of ±1.25 V for that range. At input voltages less than 2.8 V, the output voltage span will be the same as the power voltage. The sensor will retain the stated sensitivity level, but the output will be clipped at the power supply voltages shown by this formula: gmax = Measurement g range with applied voltage between 1.5 – 2.5V gspec = specified g range when applied voltage >2.5V Vapp = applied power voltage (1.5 – 2.5V) Output Span as % of Specified Span 120 100 80 60 40 20 0 0 1 2 3 4 5 6 Applied Voltage Figure 5 g range (Vdd >2.8V) ±25 ±50 ±100 ±200 ±500 ±1000 ±2000 TE CONNECTIVITY SENSORS /// MODEL 830M1 Effective g range (Vdd =1.5V) ±15 ±30 ±60 ±120 ±300 ±600 ±1200 10/2022 Page 9 830M1 TRIAXIAL ACCELEROMETER BUILT-IN RTD TEMPERATURE SENSOR TRANSFER FUNCTION RTD Temp Sensor TEMPERATURE SENSOR TOLERANCE GRAPH Graph 3 Graph 4 TE CONNECTIVITY SENSORS /// MODEL 830M1 10/2022 Page 10 830M1 TRIAXIAL ACCELEROMETER TEMPERATURE SENSOR SELF HEATING EFFECT For accurate temperature measurement it is recommended to use a small current to avoid self-heating of the temperature sensing element. The temperature error caused by excessive measurement current can be calculated using: ΔT = Sensor output deviation from true temperature I = Resistor current R = RTD resistance EK = Self-heating coefficient TEMPERATURE SENSOR ELECTRICAL CHARACTERISTICS The characteristics of the nickel RTD temperature sensor are specified as per DIN 43760. The large Temperature Coefficient of Resistance (TCR) of the RTD (6178 ppm/K) offers greater sensitivity than other types of RTDs. The electrical characteristics can be described by these equations: R = RTD resistance value T = Applied temperature Coefficients: a = 5.485 x 10-3 b = 6.650 x 10-6 c = 2.805 x 10 -11 d = -2.000 x 10-17 T = True temperature R = Measured resistance Coefficients: a’ = 412.6 b’ = 140.41 c’ = 0.00764 d’ = 6.25 x 10-17 e’ = -1.25 x 10-24 TEMPERATURE SENSOR TOLERANCES Tolerances for the nickel RTD are industry standard class B which is ±0.12% for resistance at 0°C. This is equivalent to a temperature accuracy of ±0.3°C. To calculate tolerance at other temperatures, use these formulae: From -40°C to 0°C – From 0°C to 125°C – TE CONNECTIVITY SENSORS /// MODEL 830M1 10/2022 Page 11 830M1 TRIAXIAL ACCELEROMETER SIMPLE INTERFACE CIRCUITS CONVERT TEMPERATURE TO LINEAR VOLTAGE The resistive divider or constant current circuits will provide a low accuracy linear voltage output representing temperature. RTD Analog Voltage Out Output Voltage (3.3V applied) 0.600 0.500 0.400 0.300 Voltage Divider Constant Current 0.200 0.100 0.000 -50 -30 -10 10 30 50 70 90 110 130 150 Temperature / °C Graph 5 TE CONNECTIVITY SENSORS /// MODEL 830M1 10/2022 Page 12 830M1 TRIAXIAL ACCELEROMETER INTERFACE CIRCUIT WITH A HIGH ACCURACY OUTPUT The operational amplifier circuit uses a Wheatstone bridge front end to improve measurement resolution. The addition of R5 improves the circuit linearity. Output Voltage (3.3V applied) High Accuracy Out 3.000 2.500 2.000 1.500 1.000 0.500 0.000 -50 -30 -10 10 30 50 70 90 110 130 150 Temperature / °C Graph 6 TE CONNECTIVITY SENSORS /// MODEL 830M1 10/2022 Page 13 830M1 TRIAXIAL ACCELEROMETER PACKAGING OPTIONS The 830M1 comes in two packaging options, Tray and Tape & Reel. The Tray option contains 50 pieces. Only whole trays are shipped, so orders must be placed for integer multiples of 50. The Tape & Reel option contains 150 pieces. Only whole reels are shipped, so orders must be placed for integer multiples of 150. For smaller or uneven orders, please contact one of our Distribution partners as listed on our website. Stackable Trays – 50 pieces per tray Tape & Reel – 150 pieces per reel TE CONNECTIVITY SENSORS /// MODEL 830M1 10/2022 Page 14 830M1 TRIAXIAL ACCELEROMETER ORDERING INFORMATION 830M1-xxxx Suffix G Range 0025 0050 0100 0200 0500 1000 2000 25g 50g 100g 200g 500g 1000g 2000g Packaging Part Number Tape & Reel (150 pcs) Tray (50 pcs) 20011422-00 20011422-01 20011423-00 20011423-01 20011424-00 20011424-01 20011425-00 20011425-01 20011426-00 20011426-01 20018122-00 20018122-01 20019427-00 20019427-01 TE CONNECTIVITY SENSORS CUSTOMER CARE BY REGION AMERICAS EUROPE, MIDDLE EAST, AFRICA ASIA & PACIFIC tesensors-ccmeas@te.com sensor-customercare.apac@te.com sensor-customercare.emea@te.com CLICK HERE › CONNECT WITH A SPECIALIST te.com/sensors TE Connectivity, TE, TE Connectivity (logo) and Every Connection Counts are trademarks. All other logos, products and/or company names referred to herein might be trademarks of their respective owners The information given herein, including drawings, illustrations and schematics which are intended for illustration purposes only, is believed to be reliable. However, TE Connectivity makes no warranties as to its accuracy or completeness and disclaims any liability in connection with its use. TE Connectivity‘s obligations shall only be as set forth in TE Connectivity‘s Standard Terms and Conditions of Sale for this product and in no case will TE Connectivity be liable for any incidental, indirect or consequential damages arising out of the sale, resale, use or misuse of the product. Users of TE Connectivity products should make their own evaluation to determine the suitability of each such product for the specific application. © 2022 TE Connectivity Corporation. All Rights Reserved. TE CONNECTIVITY SENSORS /// MODEL 830M1 10/2022 Page 15