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ACO acceleration sensor – TYPE 7302, 7303, 7304, 7344A, 7351A, 7350A, 7323A, 7323B

Producer:

Categories: Vibration sensor, Vibration analysis system, Vibration meter, Engine vibration meter Tags: acceleration sensor, Vibration measuring device

An accelerometer is a device for detecting acceleration or vibration by attachment or contact to the vibrating body of machinery or equipment.

ACO Co., Ltd. offers a variety of accelerometers, including the TYPE 7302 that weighs only 1/5 of a 1 Yen coin (0.2g), and others with a temperature range from -50℃ to +160℃, meet different customer needs. With this type of accelerometer with built-in preamplifier, there is no need for expensive charge amplifiers and long low-noise cables can be extended, thus reducing measurement costs.

Piezoeletric Type Acceleration Pickup Built-in Preamplifier Type Acceleration Pickup

CASE STUDY

In general, acceleration pickup has a main axis with which the acceleration sensitivity becomes its maximum. It is called “Sensing Axis” and align this axis with the desired measurement direction. Normally the sensing axis is close to perpendicular to the mounting base surface of the pickup.
With the pickup fixed to the vibration table and if it is vibrated in the direction of sensing axis, the pickup will provide output rating. Next, if the pickup is mounted on the vibration table with inclination angle θ for the sensing axis and vibrated, the output (SVθ) will be rated output multiplied by cosθ, Output sensing for the axis will be SVθ*cosθ. If the θ is brought to 90 degrees, the output is supposed to become zero however, because of the existence of the Transverse Sensitivity (ie Sensitivity in any given direction perpendicular to the sensing axis), there will be some output. In the case of pickups offered by ACO, the lateral axis sensitivity is less than 5%.

Triple axis pickup is very useful since it can measure the vibration in 3 axis simultaneously. It is a convenient sensor to obtain composition of acceleration in 3 axes, or to measure and evaluate human body exposure to the vibration of machinery.
New product, 3 axis 10 mm X 10 mm, was developed in response to the need to use the pickup at measurement site where only small mounting space is available. It contains preamplifier yet it

Charge Output Acceleration Pickup_1

Type	TYPE 7302	TYPE 7303	TYPE 7304		TYPE 7344A
Appearance * Click the figure to see enlarged drawing.
Features	Extremely small size	Small size, waterproof	Small ring		Small size, light weight
Configuration	Shear type	Bending type	Shear type
Sensitivity pC/m/s²	0.035	1.84	0.2		0.3
Frequency Range Hz(±5%)	fc ～ 6,000	fc ～ 1,300	fc ～ 10,000		fc ～ 15,000
Frequency Range Hz(±3dB)	fc ～ 20,000	fc ～ 2,000	fc ～ 20,000
Resonant Frequency kHz	60	5	60
Maximum Usable Acceleration m/s²	100,000	5,000			50,000
Maximum Transverse Sensitivity %	－	5
Impact Resistance m/s²	100,000	10,000			100,000
Operating Temperature ℃	-50 ～ +160	-20 ～ +120	-50 ～ +160		-20 ～ +150
Connector	N/A(cable)			Micro connector on the side surface(M3)
Cable	－			BC-0065
Case Material	Titanium	Stainless steel			Titanium
Outline size (excluding connector) mm	Φ3.5×2.5(H)	4(W)×13(D)×4(H)	Φ8×5.4(H)		7(Hex)×10.5(H)
Weight g	0.2	1.3	1.9		2
Spanner Screw	Bonding			Screw (M2) or Bonding		M3 Female screw
Appearance diagram mm * Click the figure to see enlarged drawing.

Charge Output Acceleration Pickup_2

Type	TYPE 7351A	TYPE 7350A	TYPE 7323A	TYPE 7323B
Appearance * Click the figure to see enlarged drawing.
Features	For general applications		Extremely small size, 3 axis	Small size, 3 axis
Configuration	Compression type		Shear type
Sensitivity pC/m/s²	5.0		0.04	0.16
Frequency Range Hz(±5%)	fc ～ 8,000	fc ～ 7,000	fc ～ 5,000	fc ～ 10,000
Frequency Range Hz(±3dB)	fc ～ 12,000	fc ～ 10,000	fc ～ 20,000	fc ～ 15,000
Resonant Frequency kHz	40	30	60	40
Maximum Usable Acceleration m/s²	16,000		25,000	10,000
Maximum Transverse Sensitivity %	5
Impact Resistance m/s²	20,000		50,000	100,000
Operating Temperature ℃	-40 ～ +150		-50 ～ +160	-20 ～ +160
Connector	Miniature connector on the upper surface	Miniature connector on the side surface	N/A(cable)	Micro connector on the side surface(M3)
Cable	BC-0062		－	BC-0065
Case Material	Stainless steel		Titanium
Outline size (excluding connector) mm	14(Hex)×25(H)	14(Hex)×30(H)	8(W)×7(D)×5.5(H)	17(W)×9(D)×7(H)
Weight g	25	29	1.2	5.2
Spanner Screw	M6 Female screw		Bonding
Appearance diagram mm * Click the figure to see enlarged drawing.