Need assistance? Call us: 1-800-663-4209
AS-667-Series
B&K Vibro Low Frequency Accelerometer
- Hermetically sealed
- Rugged (IP66/ IP67) and corrosion resistant design
- Measures very low frequencies down to 0.5 Hz
- Industry proven M12 connector
AS-667-Series
From
$
393.51
Product Overview
- Additional Features 1 Piezoelectric Principle, Compression type
- Applications Assembly Line, Casing Vibration, Compressor Control, Power Generation, Power Plants & Boilers, Pump Control, Shaft Vibrations
- Connector Style Top
- Electrical Output 27 V
- Enclosure Material Stainless Steel
- Enclosure Ratings IP66, IP67
- Ground Isolated Case
- Linearity Error < 1 %
- Measuring Range ±60 g
- Mounting M8 Tapped Hole
- Mounting Note 3,5 Nm, width across flats: 22 mm
- Mounting Torque 3.5 Nm
- Natural frequency 30 kHz
- Operating Temperature, Max 125 °C
- Operating Temperature, Min -55 °C
- Output Detail Voltage across entire temperature range: 12.4 Vdc to 13.4 Vdc
- Output Resistance 100 Ω
- Overload Capacity 5000 g peak
- Sensitivity Note Cross Sensitivity: 5%
- Sensor Type Compression Type
- Series ID AS-667-Series
- Storage Temperature, Max 70 °C
- Storage Temperature, Min -20 °C
- Supply Current 2 mA to 10 mA
- Weight 120 g
Supported Applications
The AS-667 Series is a low-frequency accelerometer by Brüel & Kjær Vibro, designed for monitoring vibrations on rotating machinery. Documented applications include turbines, fans, pumps, and generators.
Operating Conditions & Performance
This sensor operates on the piezoelectric principle (compression type) with a nominal sensitivity of 100 mV/g ±10 % at 80 Hz. The measurement range is specified as 60 g Peak, with an amplitude linearity of less than 1 %. Frequency response covers 0.5 Hz to 13 kHz within ±3 dB and extends from 1.5 Hz to 10 kHz within ±10 %. Cross sensitivity is typically 5 %, and the resonance frequency is typically 30 kHz.
The device features a hermetically sealed stainless steel housing (material 1.4404) with an enclosure rating of IP66 / IP67 per EN 60529. It operates across a temperature range of -55 °C to +125 °C and can be stored in original packaging from -20 °C to +70 °C. Overload capacity is rated at 500 g for constant sinusoidal vibration and up to 5,000 g for shock events.
Electrical Specifications
- Power Supply: Constant current supply (2 mA .. 10 mA), secure against reverse polarity.
- Bias Voltage: Typically 12.9 VDC; across the entire temperature range, it is specified as 12.4 VDC to 13.4 VDC.
- Output Resistance (Load): 100 Ω.
- Maximum Output Voltage: 27 V.
- Housing Grounding: Housing isolated against sensor electronics.
Mechanical & Physical Specifications
- Dimensions: Diameter ø 24.8 mm; Overall length 57.5 mm.
- Weight: 120 g.
- Mounting Thread: M8 tapped hole with a mounting torque of 3.5 Nm (width across flats: 22 mm).
Configuration Options
The AS-667 is supplied as a single model configuration featuring an integrated amplifier that converts the charge signal into a voltage output via an M12 plug, male, 4-pole connector. The electrical connection pinout for the M12 male plug is defined as follows:
- Pin 1: SIG
- Pin 2: 0V / GND
- Pins 3 and 4: Not connected
The series supports several accessories for installation and cabling, including double-wired connection cables with straight or angled M12 plugs (AC-1403, AC-1404) and threaded bolts to adapt the mounting interface (AC-3360: 1/4" - 28 UNF to M8; AC-3362: M8 to M8).
Key Product Differences
The AS-667 Series is represented by a single model number, AS-667. The product overview describes it as a robust, general-purpose accelerometer with an integrated amplifier and hermetically sealed housing. No alternative sensor elements, output types, or housing materials are documented for this specific series code.
PDFs & Manuals
