Piezoelectric Accelerometer

Part Number:	SAPE-HLS
Product Type:	SoMat Sensors
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Overview
Product Specifications
Product Options
Cables/Accessories

Overview

SoMat Sensors Series IEPE (Integrated Electronics Piezoelectric) Accelerometers (SAPE-HLS) are low-cost, lightweight, ceramic shear accelerometers for modal and general vibration measurements. Welded and hermetically sealed, they are designed for long term reliability in the harshest of environments. SAPE-HLS Accelerometers are available in both single and tri-axes models; single axis models have an option on the sensitivity.

IEPE transducers are piezoelectric sensors with built-in microelectronic signal conditioning circuitry. This circuitry requires a constant current excitation source that serves to convert the high-impedance charge signal into a low-impedance voltage signal. Signal conditioning for these type transducers is provided in SoMat eDAQ Systems through the High Level Layers (HLS) with the ICP-Type Signal Conditioning Module (EICP).

Each SAPE-HLS Accelerometer comes with everything needed to set it up with SoMat eDAQ systems; including all cabling and instructions. Additionally, the accelerometers also come with a case, mounting stud, adhesive mounting base, petro wax and NIST traceable calibrations certificates.

Product Specifications

	SAPE-HLS-1010	SAPE-HLS-1100	SAPE-HLS-3010
Performance
Sensitivity (+/- 10%)	10 mV/g	100 mV/g	10 mV/g
Measurement Range	+/-500 g pk	+/-50 g pk	+/-500 g pk
Frequency Range (+/-5%)	0.5 to 10,000 Hz	0.5 to 10,000 Hz	-
Frequency Range (+/-10%)	0.3 to 15,000 Hz	0.3 to 15,000 Hz	-
Frequency Range (+/-5%) (Y & Z-axis)	-	-	2 to 10,000 Hz
Frequency Range (+/-5%) (X-axis)	-	-	2 to 7,000 Hz
Resonant Frequency	≥50 k Hz %	≥50 k Hz %	≥55 k Hz %
Broadband Resolution (1 to 10000 Hz)	0.0005 g rms	0.00015 g rms	0.003 g rms
Non-Linearity	≤1 %	≤1 %	≤1 %
Transverse Sensitivity	≤5 %	≤5 %	≤5 %
Environmental
Overload Limit (Shock)	+/-5000 g pk	+/-5000 g pk	+/-10000 g pk
Temperature Range (Operating)	-65 to +250 ˚F	-65 to +250 ˚F	-65 to +250 ˚F
Temperature Response	See Graph	See Graph	See Graph
Base Strain Sensitivity	0.003 g/µε	0.003 g/µε	-
Electrical
Excitation Voltage	*18 to 30 VDC	*18 to 30 VDC	*18 to 30 VDC
Constant Current Excitation	*2 to 20 mA	*2 to 20 mA	*2 to 20 mA
Output Impedance	≤100 ohm	≤200 ohm	≤200 ohm
Output Bias Voltage	7 to 12 VDC	7 to 12 VDC	7 to 11 VDC
Discharge Time Constant	1.0 to 2.5 sec	1.0 to 2.5 sec	0.3 to 1.0 sec
Settling Time (within 10% of bias)	<10 sec	<10 sec	<3 sec
Spectral Noise (1Hz)	110 µg/√Hz	39 µg/√Hz	1000 µg/√Hz
Spectral Noise (10 Hz)	25 µg/√Hz	11 µg/√Hz	300 µg/√Hz
Spectral Noise (100 Hz)	8 µg/√Hz	3.4 µg/√Hz	80 µg/√Hz
Spectral Noise (1 kHz)	4 µg/√Hz	1.4 µg/√Hz	25 µg/√Hz
Physical
Sensing Element	Ceramic	Ceramic	Ceramic
Sensing Geometry	Shear	Shear	Shear
Housing Material	Titanium	Titanium	Titanium
Sealing	Hermetic	Hermetic	Hermetic
Size (Hex x Height)	0.44”x0.62”	0.44”x0.62”	-
Size (Height x Length x Width)	-	-	0.4”x 0.77”x 0.4”
Weight	0.20 oz	0.20 oz	0.19 oz
Electrical Connector	10-32 Coaxial	10-32 Coaxial	1/4-28 4-Pin
Electrical Connector Position	Side	Side	Side
Mounting Thread	10-32 Female	10-32 Female	5-40 Female
Mounting Torque	10 to 20 in-lb	10 to 20 in-lb	4 to 5 in-lb

Temperature Response Graphs

SAPE-HLS-1010

SAPE-HLS-1100

SAPE-HLS-3010

* Provided by SoMat ICP Conditioning Module

Product Options

SAPE-HLS accelerometers are available in both single and tri-axes models. Single axis models are additionally available in two sensitivity ranges; 10 mV/g and 100 mV/g.

Part Number Code
The following number scheme is used to identify the layer configuration.

SAPE - HLS – X XXX
Identifier SAPE= SoMat Accelerometer Piezoelectric
Series HLS= Compatible with SoMat HLS Layers and ICP-Type Signal Conditioners
Axis= 1= Single Axis, 3= Tri Axis
Mv/G Output= 100, 010