Arc Services, LLC Arc Automation

Welding, Plasma and Positioning Equipment Specialists, specializing in Welding and Cutting Automation and Contour Shape Cutting Machines

Servicing the Intermountain area since 1998 with over 20,000 completed repairs and satisfied customers from homeowners to multi-national corporations.

Welding Machine Calibration and Certification


  • Calibration of Amp Meters, Volt Meters and Wirefeed Meters as well as Panel Indicators
  • Includes Certificate of Calibration
  • Includes Data Sheet Showing Calibration Results 
  • Written Calibration Procedure Provided
  • Machine Labeled and Tamper Indication Labels Applied to Meters
  • Automatic Reminder Prior to Calibration Expiration
  • Testing and Visual Inspection of Machine during calibration. 
  • Documentation Provided on Calibration Equipment--All Standards Traceable to N.I.S.T. 

Calibrations preformed by most other companies utilize a hand held clamp-on amp meter and standard volt meter. The readings are taken while the operator is welding at one output setting.  We utilize a resistance load bank specifically designed to test and calibrate the output from welding machines.  Using this, we can vary the load applied to access readings and output levels that cannot be attained while welding, allowing us to verify readings from minimum to maximum instead of just at the welding parameter. The machine is currently set up for wire size, stick electrode size etc. ensuring accuracy throughout the entire output range of the machine.  The output of the machine and the readings are unstable while welding and vary with changes in the arc length and other factors as well. When a resistance load is applied, this is overcome and the readings are extremely stable and machine outputs can be verified within 1 amp and 1/10 of 1 volt.


Welding Equipment Meter and Indicator Certification Procedure

ARCSER001 Rev 2.1  5/20/2010

                                            

Volt Meter Certification

 

  1. Voltage readings shall be taken with the calibrated standard at the output studs of the unit under test.  Voltage measurements shall be taken at open circuit voltage as well as a minimum of 2 measurements with the unit under load which will be recorded.
  2. Verify that welding machine voltmeter/indicator reading is within + or – 10% of calibrated standard measurement.
  3. Verify that the welding machine output volt meter/indicator is as close as possible to the actual output of the machine.
  4. If adjustment is required, it will be made per the technical manual for each machine. (If the technical manual is not available the factory will be consulted or standard meter calibration practices will be used.)

 

Ammeter Certification

 

1.     Put certified Miller Load Bank P/N 902804 on the output studs of the machine under test.

  1. Take amperage readings at 100 amp intervals from minimum to maximum of the unit under test.
  2. Verify that the machine ammeter/indicator is within + or – 10% of the certified Load Bank measurement.
  3. Verify that the welding machine ammeter/indicator is as close as possible to the actual output of the machine.
  4. If adjustment is required, it will be made per the technical manual for each machine. (If the technical manual is not available the factory will be consulted or standard meter calibration practices will be used.)

 

Wire Feed Speed (IPM) Meter Certification (If required, extra charges apply)

 

  1. Take actual IPM readings at 200 IPM intervals from min to max of wire feed range with certified Tachometer at drive rolls of wire feed unit.
  2. Verify that the wirefeed speed meter/indicator under test is within + or – 10% of the measurement indicated by the calibrated Tachometer.
  3. If adjustment is required, it will be made per the technical manual for each machine. (If the technical manual is not available the factory will be consulted or standard meter calibration practices will be used.)

 

Documentation

 

  1. Fill out calibration data sheet for each unit calibrated and certified.
  2. Fill out and apply calibration sticker on front panel of unit under test.
  3. File a copy of all calibration data sheets, work orders, billing information and Certificate of Calibration.
  4. Customer receives original Certificate of Calibration
  5. Customer will be notified prior to calibration expiring so recalibration can be scheduled and preformed if desired.

 

*If meters cannot be brought into tolerance with standard adjustment procedures, customer will be informed and an estimate will be given for repairs to bring the meters into tolerance. If estimate is accepted the machine will be certified at no additional cost after repairs are made. If customer opts not to repair the machine a data sheet showing the test results will be furnished but a certificate will not be.