• GENERAL CHARACTERISTICS

• Versions:
• AC-7x: analog 
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• AC-7xD: digital
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  Configurations***:	Triaxial	Biaxial	Uniaxial	Axes	Alignment**
  AC-73 or AC-73i*	X			X – Y – Z	H – H – V
  AC-72-H or AC-72i-H*		X		X – Y	H – H
  AC-72-HV or AC-72i-HV*		X		X – Z	H – V
  AC-71-H or AC-71i-H*			X	X	H
  AC-71-V or AC-71i-V*			X	Z	V

• * i : Internal sensor   ** H: Horizontal, V: Vertical ***: add “D” after number of channels for digital version 
• Full Scale Range:
• ±2 std., ± 0.5, 1, 3 or 4 g user selectable at field

• SENSOR ELEMENT

• Type:
• True Electro-mechanical Force Balance Accelerometer
• Dynamic Range:
• 165 dB (per bin rel. full range)
  156 dB (per bin rel. full scale rms)
  134 dB (0.02 – 50 Hz, integrated PSD
• nonlinearity:
• < 0.1 %
• Accuracy:
• ± 0.4 dB max over the bandwidth
• Cross Axis Sensitivity:
• < 0.5 %
• Bandwidth:
• DC to 200 Hz
• Damping
• 0.7 ±0.1 critical
• Offset Drift
• 0.0005 g / °C
• Span drift:
• 200 ppm / °C
• Full Scale output:
• 0 ±10 V differential (20 Vpp)
• Hysteresis:
• < 0.001 % of full scale
• Sensitivity:
• 2.5 to 20 V/g
• Output impedance:
• 100 ohms
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• POWER

• Supply voltage:
• AC-7x: 9.5 to 18 VDC, single supply
  AC-7xD: 48 VDC
• Consumption:
• AC-73: 41mA typical, 260 mA max. @15 VDC
  AC-73D: 200 mA typical
• Overvoltage Protection:
• All external interfaces are protected

• CONNECTOR PIN CONFIGURATION

• AC-73:
• Pin 1-2, 3-4, 5-6:
• Signal output for axis X, Y, Z
• Pin 7-8:
• Test input, Digital 0/12 V / GND
• Pin 9-10:
• 12 VDC insulated power supply input
• Pin 11-12:
• Reserved
• Case:
• Shield connection
• AC-73:
• see user manual

• ENVIRONMENT/HOUSING

• Housing Type:
• Cast aluminium
  Sealed access cover
• Housing Size:
• 195 x 112 x 96 mm
• Weight:
• 3.0 kg
• Index of Protection:
• IP 65 optional IP 68*
• Temperature Range:
• -20 to 70 °C (operating)
  -40 to 75 °C (non-operating)
• Humidity:
• 0 to 100 % (non-condensing))
• Orientation:
• Can be configured for mounting in any position (please specify at order).
• Mounting
• Single bolt, surface mount, adjustable within ±10°
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STANDARD SENSOR

• Floor mounted, Full scale ± 2 g, for external sensors: concrete anchor, GeoSIG recorder mating connector and
  AC-7x: 2 m cable with cable inlet
  AC-7xD: cable inlet
• OPTIONS
• Full Scale Output*:
• 4 to 20 mA current loop*
• Cable & connector*:
• -Frame connector (no cable inlet)
  -Mating connector (for frame connector)
  -Cable with shielded twisted pairs for any with open end
  -Connector on user specification mounted at cable end
  -See separate cable & connector options sheet
• Housing:
• -Watertight IP68 housing*
  -Stainless steel protective housing
• Mounting:
• See separate sensor orientation options sheet

• ORDERING INFORMATION

• Specify
• Version and configuration of AC-7x, full scale range, and other applicable options

• *NAD: Not applicable for AC-7xD digital version
  
  **Specifications subject to change without notice