The Models 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.
|Transfer / Electrical|
|Voltage Sensitivity1||20mV/g +/-5%|
|Range||+/- 250g Peak|
|Frequency Linearity2||+/-5% Max, 2 Hz To 5,000 Hz
+/-8% @ 10,000 Hz
|Mounted Resonant Frequency||40KHz, Nom.|
|Transverse Sensitivity||5% Max, Typical|
|Amplitude Linearity||+/-1.0% (BFSL) / 100 g|
|Avg Temp Coeff of Sensitivity||+/-10% max|
|Output Bias Voltage||8.0 VDC Â±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|
|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|
|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 @ 4.5 in -lbs Typical|
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.