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Model Number

625B21

PRECISION INDUSTRIAL ICP® ACCELEROMETER

Revision: F

ECN #: 46537

Performance

ENGLISH

SI

Sensitivity(± 5 %)

100 mV/g

10.2 mV/(m/s²)

[2]

Measurement Range

± 50 g

± 490 m/s²

Frequency Range(± 5 %)

30 to 390,000 cpm

0.5 to 6500 Hz

[3]

Frequency Range

(± 10 %)

22 to 450,000 cpm

0.37 to 7500 Hz

Frequency Range

(± 3 dB)

12 to 630,000 cpm

0.2 to 10,500 Hz

Resonant Frequency

1500 kcpm

25 kHz

[1]

Broadband Resolution(1 to 10,000 Hz)

50 µg

491 µm/sec

2

[1]

Non-Linearity

± 1 %

± 1 %

[4]

Transverse Sensitivity

 5 %

 5 %

Environmental

Overload Limit(Shock)

5000 g pk

49,050 m/s² pk

Temperature Range

-65 to +250 °F

-54 to +121 °C

Temperature Response

See Graph

See Graph

[1]

Enclosure Rating

IP66

IP66

Electrical

Settling Time(within 1% of bias)

 8.0 sec

 8.0 sec

Discharge Time Constant

 1.0 sec

 1.0 sec

Excitation Voltage

18 to 28 VDC

18 to 28 VDC

Constant Current Excitation

2 to 20 mA

2 to 20 mA

Output Impedance

<100 Ohm

<100 Ohm

Output Bias Voltage

8 to 12 VDC

8 to 12 VDC

Spectral Noise(10 Hz)

2.5 µg/

Hz

24.5 (µm/sec

2

)/

Hz

[1]

Spectral Noise

(100 Hz)

0.8 µg/

Hz

7.8 (µm/sec

2

)/

Hz

[1]

Spectral Noise

(1 kHz)

0.5 µg/

Hz

4.9 (µm/sec

2

)/

Hz

[1]

Electrical Protection

RFI/ESD

RFI/ESD

Electrical Isolation(Case)

>10

8

 Ohm

>10

8

 Ohm

Physical

Size (Diameter x Height)

1.38 in x 1.13 in

35.1 mm x 28.7 mm

Weight(without cable)

4.7 oz

133 gm

Mounting

Through Hole

Through Hole

Mounting Thread

1/4-28 Male

Not Applicable

[5]

Mounting Torque

2 to 5 ft-lb

2.7 to 6.8 Nm

Sensing Element

Ceramic

Ceramic

Sensing Geometry

Shear

Shear

Housing Material

Stainless Steel

Stainless Steel

Sealing

Welded Hermetic

Welded Hermetic

Cable Length

10 ft

3.0 m

Cable Type

FEP

FEP

[6]

[7]

All specifications are at room temperature unless otherwise specified.
In the interest of constant product improvement, we reserve the right to change specifications without notice.

ICP

®

is a registered trademark of PCB Group, Inc. 

OPTIONAL VERSIONS

Optional versions have identical specifications and accessories as listed for the standard model 

except where noted below. More than one option may be used.

EX

- Hazardous Area Approval- contact factory for specific approvals

LB

- Low Bias Voltage

Output Bias Voltage

6 to 8 VDC

6 to 8 VDC

Excitation Voltage

12 to 28 VDC

12 to 28 VDC

Measurement Range

± 35 g

± 343 m/s²

M

- Metric Mount

Supplied Accessory : Model M081A73 Mounting Bolt M6 x 1.00 replaces Model 081A73

NOTES:

[1] Typical.
[2] Conversion Factor 1g = 9.81 m/s².
[3] The high frequency tolerance is accurate within ±10% of the specified frequency.
[4] Zero-based, least-squares, straight line method.
[5] 1/4-28 has no equivalent in S.I. units.
[6] Twisted shielded pair.
[7] See PCB Declaration of Conformance PS023 or PS061 for details.

SUPPLIED ACCESSORIES: 

Model 080B45 Thermal Boot (1)
Model 081A73 Captive mounting bolt 1/4-28 x 1.34" (1)
Model ICS-1 NIST-traceable single-axis amplitude response calibration from 600 cpm (10 Hz) to 
upper 5% frequency

Entered: LK

Engineer: gs

Sales: MC

Approved: BAM

Spec Number:

Date: 3/3/2017

Date: 3/3/2017

Date: 3/3/2017

Date: 3/3/2017

9910 

3425 Walden Avenue, Depew, NY 14043

Phone: 800-959-4464
Fax: 716-684-3823
E-Mail: [email protected]

Summary of Contents for 625B21

Page 1: ...celerometer Installation and Operating Manual For assistance with the operation of this product contact PCB Piezotronics Inc Toll free 800 959 4464 24 hour SensorLine 716 684 0001 Fax 716 684 3823 E m...

Page 2: ...ty regimen When in doubt about a calibration cycle a good rule of thumb is to recalibrate on an annual basis It is also good practice to recalibrate after exposure to any severe temperature extreme sh...

Page 3: ...rchase Order should include authorization to proceed and return at current pricing which can be obtained from a factory customer service representative Contact Information International customers shou...

Page 4: ...isclosure Table Pb Hg Cd Cr VI PBB PBDE O O O O O O PCB X O O O O O O O O O O O X O O O O O O O O O O O O O O O O O O O O O O O O O X O O O O O O O O O X O O O O O O O O O O O X O O O O O X O O O O O...

Page 5: ...e O O X O O O Wires O O O O O O Cables X O O O O O Plastic O O O O O O Solder X O O O O O Copper Alloy Brass X O O O O O This table is prepared in accordance with the provisions of SJ T 11364 O Indica...

Page 6: ...MACHINE CONDITION MONITORING Piezoelectric ICP Accelerometers Operating Guide Operating Guide with Enclosed Warranty Information 3425 Walden Avenue Depew New York 14043 2495 Phone 716 684 0003 Fax 716...

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Page 18: ...mic Sensing Geometry Shear Shear Housing Material Stainless Steel Stainless Steel Sealing Welded Hermetic Welded Hermetic Cable Length 10 ft 3 0 m Cable Type FEP FEP 6 7 All specifications are at room...

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