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Section I - Vibration Sensors
Page 97
Intrinsically Safe Accelerometers
VIBRATION ANALYSIS HARDWARE
AC979 Series
Intrinsically Safe Accelerometer,
Biaxial Accelerometer,
Connector/Cable, 100 mV/g
Actual
Product
Size Shown
Specications Standard Metric
Environmental
Temperature Range -58 to 250°F -50 to 121°C
Electromagnetic Sensitivity CE
Sealing Welded, Hermetic
Physical
Sensing Element PZT Ceramic
Sensing Structure Shear Mode
Weight 6.9 oz 195 grams
Case Material 316L Stainless Steel
Mounting 1/4-28
Connector (AC979-1D)
Armored Cable (AC979-3D)
Integral Cable (AC979-9D)
3 Pin MIL-C-5015
Armor Jacketed Cable
Blue TPE Cable
Mounting Torque 1 to 2 ft. lbs. 1,4 to 2,7 Nm
Mounting Hardware 1/4-28 Captive Bolt M6x1 Captive Bolt
Indexing Screw
Provided for consistent axis orientation,
may be removed in permanent installations
Calibration Certicate CA10
Specications Standard Metric
Part Number AC979 M/AC979
Vibration
Sensitivity (±10%) 100 mV/g
Frequency Response (±3dB) 60-390,000 CPM 1,0-6500 Hz
Dynamic Range ± 50 g, peak
Electrical
Settling Time <2.5 seconds
Voltage Source (IEPE) 18-28 VDC
Constant Current Excitation 2-10 mA
Spectral Noise @ 10 Hz 27 µg/√Hz
Spectral Noise @ 100 Hz 6.5 µg/√Hz
Spectral Noise @ 1000 Hz 2.5 µg/√Hz
Output Impedance <100 ohm
Bias Output Voltage 10-14 VDC
Case Isolation >10
8
ohm
CTC multi-conductor cable
Green = X axis
White = Z axis
Black = Common
Ordering Information
Standard AC979-1D
M/AC979-1DMetric
(M6x1
Captive Bolt)
(1/4-28
Captive
Bolt)
AC979-9D /
(1/4-28
Captive
Bolt)
(length in feet) (termination)
-
Build
To
Order
(M6x1
Captive Bolt)
M/AC979-9D /
(length in meters)
(termination)
(termination)
(length in feet)
M
-
-
Build
To
Order
(1/4-28
Captive
Bolt)
AC979-3D /
-
(maximum armor length 100 ft.) (cable length in feet)
/
(termination)
Build
To
Order
(M6x1
Captive Bolt)
M/AC979-3D /
(cable length in meters)
-
(maximum armor length 100 ft.)
(maximum armor length 30 m)
/
/ -
(termination)
(termination)
(cable length in feet)
M M
Build
To
Order
Stock
Product
Stock
Product
Cable Terminations: L Z
Read Before Purchasing
Important information on
Regulatory Approvals and
Requirements
on Page 87
AC979-3D
Integral Cable
Conductor Polarity
Green Axis X (+) Signal / Power
White Axis Z (+) Signal / Power
Black (-) Common
Conductor Polarity
Green Axis X (+) Signal / Power
White Axis Z (+) Signal / Power
Black (-) Common
AC979-9D
Armored Integral Cable
ø0.27 in
[7 mm]
AC979-1D
3 Pin Connector
Connector Pin Polarity
A Axis X (+) Signal / Power
B Axis Z (+) Signal / Power
C (-) Common
Index Screw Orientation Diagram
(Remove Index Screw for Permanent Mounting)
II 1 G
0344
USC
®
221421
IECEx
IECEx SIR 15.0060X
CSA/ATEX/IECEx
Approved
Requires Intrinsically Safe Barrier
IS111
REGULATORY INFORMATION
Ex ia IIC T3/T4 Ga
AEx ia IIC T3/T4 Ga
CLI Groups A, B, C, D
CLII Groups E, F, G; CLIII
CLI, Zone 0
Operating Temperature Code: T4
Ambient Temperature Range = -40°C to +80°C
Operating Temperature Code: T3
Ambient Temperature Range = -40°C to +121°C
Control Drawing INS10012
Ui = 28 Vdc Ii = 112 mA
Pi = 1W, Ci = 63.036nF, Li = 0μH
CSA 221421
Sira 15ATEX2152X
Ex ia IIC T3 Ga
IECEx SIR 15.0060X
Ex ia IIC T3 Ga
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