User's Manual Part 3
ECD, Inc.
4287-B S.E. International Way
Milwaukie, Oregon 97222-8825
Telephone: (800) 323-4548
FAX: (503) 659-4422
Technical Support: (800) 323-4548
Email: ecd@ecd.com
Internet: http://www.ecd.com
7.3.3. Calibration Information
Because the M.O.L.E.® Thermal Profiler is made with precision components with high
temperature stability and tight tolerances, the analog-to-digital converter remains stable
for years. High quality components together with software algorithms based on the
IPTS-90* standard for Type K thermocouples have been provided to yield the specified
accuracy and long-term stability. Each unit has been tested at the factory before it is
shipped.
ECD recommends the M.O.L.E.® Thermal Profiler is factory re-calibrated
every 6 months when it is being used constantly. If the use is occasional, a
period of no greater than 12 months between calibrations is recommended.
Good thermal quality programs require periodic calibration to show the Thermal Profiler
continues to remain in calibration using a temperature standard. Any observed
inaccuracies are probably not caused by calibration error but by any one of a number of
other sources, primarily the following:
1. Poor thermocouple connections or open thermocouples.
2. Using a standard that is inaccurate or one not traceable to the National Institute of
Standards and Technology.
• Check the accuracy of your standard and that it is traceable to NIST. Be sure
that you're using Type K special limits of error wire connected to the standard.
Be sure that your standard is cold-junction compensated, or use an ice-point
reference.
• Make sure that IPTS-90 tables are being used.
3. Extremely low Power Pack charge.
• Recharge the Power Pack. Refer to M.O.L.E.® MAP User Help System for
details.
4. Sudden changes in ambient temperature.