PCB Piezotronics EX611A20 Installation And Operating Manual page 19

Charge output accelerometer

Table of Contents

Figure 5. Stud Mounting

Understand Back-to-Back Calibration limitations.

Do not expect the uncertainty of calibration to be

any better than 2%. (In fact, the uncertainty may

3425 Walden Avenue,

Toll Free: 888-684-0013  24-hour SensorLine

MANUAL: 55308

REV: A

ECO: 49582

E-mail: vibration@pcb.com  Website: www.pcb.com

be as high as 3% or 4% for frequencies <10 Hz

or >2 kHz.) Since large sensors may affect high-

frequency accuracy, verify that the test sensor does

not mass load the reference standard. Validate

your calibration system with another accelerometer

prior to each calibration session. Check with the

manufacturer for exact system specifications.

7.5 CONCLUSIONS

Without an adequate understanding of dynamics,

determining what, when, and how to test a sensor is

a difficult task. Therefore, each user must weigh the

cost, time, and risk associated with self-calibration

versus the services of an accredited laboratory.

: 716-684-0001  FAX: 716-685-3886

Depew, NY 14043

Table of Contents

Need help?

Do you have a question about the EX611A20 and is the answer not in the manual?