UNI EN ISO 17657-4 : 2008
Current
The latest, up-to-date edition.
RESISTANCE WELDING - WELDING CURRENT MEASUREMENT FOR RESISTANCE WELDING - PART 4: CALIBRATION SYSTEM
14-02-2008
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Construction of calibration system
4.1 Reference welding current measuring system
4.2 Test set-up
4.3 Basic feature for calibration of welding current
measuring system
4.4 Basic feature for calibration of current sensor
4.5 Basic feature for calibration of welding current
meter without sensor
5 Physical environment and operating conditions
6 Calibration requirements
6.1 Reference welding current measuring system
6.2 Reference current sensor
6.3 Data acquisition device
6.4 Test stage and power sources
7 Test report
7.1 Test report for calibration of welding current
measuring systems
7.2 Test report for calibration of current sensors
7.3 Test report for calibration of welding current
meters without sensors
8 Test procedure
8.1 General
8.2 Calibration of welding current measuring system
8.3 Calibration of current sensor
8.4 Calibration of welding current meter without sensor
8.5 Special calibration cases
Annex A (informative) Measuring set-up
Annex B (informative) Items to be recorded or filed as
reference documentation for calibration
Annex C (informative) Examples of the test report in
accordance with this part of ISO 17657
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