Piezoelectric

8084 - Miniature Integrated Accelerometers

Vibration & Shock
Low Impedance Output
Sensitivity 5, 10 or 20 mV/g
360 Deg Orientation
Detachable Micro-Cable Assy.
Electrical Isolation
Noise Monitor Version
Two Mounting Stud Versions

8 New Models

Models: 8084-1, 8084-2, 8084-3 & 8084-4
8084A-1, 8084A-2, 8084A-3 & 8084A-4

The Series 8084-1, -2 -3 or -4 Piezoelectric Accelerometers are small, completely self-contained vibration measuring systems having a built-in amplifier within the housing. These units are offered with sensitivities of 5, 10 or 20mV/g for the measurement of low to medium level broadband frequency vibrations. The Model 8084-4 utilizes a crystal that is insensitive to vibration connected to the standard integrated electronics rendering a Noise Monitor Sensor to evaluate downstream instrumentation noise and data connections.

All units incorporate a ring-shear crystal mass assembly within a rugged, stainless steel body to provide an extremely reliable sensor that is virtually insensitive to environmental inputs such as base bending and thermal transients. The isolated case construction provides exceptional electrical isolation. The units are supplied with Columbia's exclusive micro-miniature detachable cable, 6" std or customer specified length. Consult the factory for customized versions of these sensors.

Consult the factory for customized versions of these sensors.

Specifications

Transfer / Electrical	8084-1 8084A-1	8084-2 8084A-2	8084-3 8084A-3	8084-4 8084A-4
Voltage Sensitivity¹	5.0mV/g +/-5%	10mV/g +/-5%	20mV/g +/-5%	N/A
Range	+/- 1000g Peak	+/- 500g Peak	+/- 250g Peak	+/- 1000g Peak
Frequency Linearity²	+/-5% Max, 2 Hz To 5,000 Hz +/-8% @ 10,000 Hz			N/A
Mounted Resonant Frequency	40KHz, Nom.			N/A
Transverse Sensitivity	5% Max, Typical			N/A
Amplitude Linearity	+/-1.0% (BFSL) / 100 g			N/A
Avg Temp Coeff of Sensitivity	+/-5% max	+/-10% max	+/-10% max	N/A
Output Bias Voltage	8.0 VDC +/-1.5VDC
Output Impedance	100 Ohms Max.
Isolation Resistance	100M Ohm Min.
Power Requirements	3 To 10 mA DC Constant Current with 12 To 30 VDC Compliance

Environmental

	8084-1 8084A-1	8084-2 8084A-2	8084-3 8084A-3	8084-4 8084A-4
Vibration Limit	1000 g Max. (Sine)
Shock Limit	1,000 g Max.
Temperature Range	0 To +165 Deg F
Humidity³	0 To 98% R.H. (Non-Condensing)
Strain Sensitivity	≤13 Equiv g @ 250 micro In. Strain			N/A

Physical

	8084-1 8084A-1	8084-2 8084A-2	8084-3 8084A-3	8084-4 8084A-4
Configuration	Ring Shear
Size	0.400 In. Dia.. x 0.325 In. H (10.2 mm Dia. x 8.26 mm H)
Weight	0.21 Oz (6 Gm)
Case Material	18-8 Stainless Steel
Electrical Interface	Miniature 2-56 Connector
Mounting	4-40 Screw @ 3.0 in -lbs Typical

Notes:
1 At +75 Deg F, 10g Peak, 100Hz; Power Supply 3 To 10 mA DC Constant Current with 12 To 30 VDC Compliance
2 Referenced to Sensitivity @ 100 Hz.
3 With Connector Protected or Sealed, Unit is Epoxy Sealed.