820M1 CONDITION MONITORINGACCELEROMETERSPECIFICATIONS
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FEATURES

Amplified ±1.25V Signal Output
3.0 to 5.5Vdc Excitation Voltage
Hermetically Sealed
Piezo-Ceramic Crystal, Shear Mode
-40° to +125°C Operating Range

APPLICATIONS
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Machine Health Monitoring
Predictive Maintenance Installations
Embedded Vibration Monitoring
Impact & Shock Monitoring
Data Loggers
Bearing Installations

Piezoelectric Accelerometer±25g to ±500g Dynamic Ranges
Wide Bandwidth to 10,000Hz
Superior Resolution to MEMS Devices
Circuit Board Mountable, Reflow Solderable
Low Cost, Superior Value

The Model 820M1 is a low cost, board mountable accelerometer
designed for embedded condition monitoring and preventive
maintenance applications. The piezo-electric accelerometer isavailable in ranges from ±25g to ±500g and features a flat
frequency response up to >10kHz. The model 820M1
accelerometer feature a stable piezo-ceramic crystal in shear
mode with low power electronics, sealed in a fully hermetic LCC
package.
The PE technology incorporated in the 820M1 accelerometer hasa proven track record for offering the reliable and long-term stableoutput required for condition monitoring applications. Theaccelerometer is designed and qualified for machine healthmonitoring and has superior Resolution, Dynamic Range andBandwidth to MEMS devices.

TE CONNECTIVITY SENSORS /// Model 820M1 Rev B

04/2019

MODEL 820M1 ACCELEROMETERPERFORMANCE SPECIFICATIONS
All values are typical at +24°C, 80Hz and 3.3Vdc excitation unless otherwise stated. TE Connectivity reserves the right to update and changethese specifications without notice.

Parameters
DYNAMIC
Range (g)Sensitivity (mV/g)
Frequency Response (Hz)Frequency Response (Hz)Resonant Frequency (Hz)Non-Linearity (%FSO)
Transverse Sensitivity (%)
Shock Limit (g)Residual Noise (mg RMS)
Spectral Noise, 10Hz (µg√Hz)
Spectral Noise, 100Hz (µg√Hz)
Spectral Noise, 1kHz (µg√Hz)±2550.06-60002-10000>30000±2<510,000
6.3
985145

ELECTRICAL
Excitation Voltage (Vdc)
Bias Voltage (Vdc)
Full Scale Output Voltage (V)Total Supply Current (µA)
Output Impedance (Ω)
Warm-up Time (sec)

3.0 to 5.5 (see note 2 below)
Excitation Voltage / 2±1.2562<100<1ENVIRONMENTALTemperature Response (%)
Operating Temperature (°C)
Storage Temperature (°C)
Humidity

See Typical Temperature Response Curves on Page 3-40 to +125
-40 to +125
Hermetically Sealed

PHYSICAL
Sensing Element
Case Material
Weight (grams)
Mounting

PZT (Lead Zirconate Titanate), Shear Mode
Ceramic Base and Kovar Cover
1.2
Solder Reflow

Calibration supplied:
12Notes

CS-SENS-0100

±50
25.0
6-60002-10000>30000±2<510,000
12.4
193
101
89±10012.5
6-60002-10000>30000±2<510,000
15.9248130
114±200
6.3
6-60002-10000>30000±2<510,000
24.7384201
176±500
2.56-6000
2-10000>30000±2<510,000
39.9620324
285

±30%
±1dB
±3dB (see note 1 below)
Typical2Hz to 10kHzNIST Traceable Amplitude Calibration at 80Hz

Proper mounting is critical for good performance to 10kHz. See operating manual for recommended installation instructions.
The model 820M1 can be operated with 2.8V excitation but the full-scale range will be limited. See operating manual for details.

The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for inaccuracies. Furthermore, thisinformation does not convey to the purchaser of such devices any license under the patent rights to the manufacturer. TE Connectivity reserves the right to makechanges without further notice to any product herein. TE Connectivity makes no warranty, representation or guarantee regarding the suitability of its product for any
particular purpose, nor does TE Connectivity assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and allliability, including without limitation consequential or incidental damages. Typical parameters can and do vary in different applications. All operating parametersmust be validated for each customer application by customer’s technical experts. TE Connectivity does not convey any license under its patent rights nor the rightsof others.

TE CONNECTIVITY SENSORS /// Model 820M1 Rev B

04/2019

MODEL 820M1 ACCELEROMETER

BIAS TEMPERATURE SHIFT

Thermal Bias Shift (typical)
2.50
2.48
2.46

Bias (V)

2.44
2.42
2.40
2.38
2.36
2.34
2.32
2.30
-60

-40-200204060

8010012014080100120140Temp (°C)
SENSITIVITY TEMPERATURE SHIFT

Thermal Sensitivity Shift (typical)
10.00
8.00
6.00
4.00

TSS (%)

2.00
0.00
-2.00
-4.00
-6.00
-8.00
-10.00-60-40-200204060

Temp (°C)

TE CONNECTIVITY SENSORS /// Model 820M1 Rev B

04/2019

MODEL 820M1 ACCELEROMETERDIMENSIONSSCHEMATICTE CONNECTIVITY SENSORS /// Model 820M1 Rev B

04/2019

MODEL 820M1 ACCELEROMETER

ORDERING INFORMATION
820M1-GGGG
l_______ Range (0100 is 100g)

Part NumberRange

820M1-002525g

820M1-0050

50g

820M1-0100

100g

820M1-0200

200g

820M1-0500

500g

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TE Connectivity, TE Connectivity (logo) and EVERY CONNECTION COUNTS are trademarks. All other logos, products and/or company names referred to herein might be trademarks of theirrespective 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 nowarranties 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 theproduct. Users of TE Connectivity products should make their own evaluation to determine the suitability of each such product for the specific application.
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All Rights Reserved.

TE CONNECTIVITY SENSORS /// Model 820M1 Rev B

04/2019