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To perform the test: • Dry-wells have inserts
that are interchangeable
Isolate the sensor from the process. and have a variety of hole
patterns to accommodate
Fully immerse the sensor into a precision temperature source, such as a various probe sizes.
dry-well or bath capable of covering the required temperature range.
• To achieve published
For best accuracy, also fully immerse a temperature standard into the dry- performance levels, the
well or bath for comparison (the process version of Field Metrology Wells insert's hole size should
have a built-in precision readout for the temperature standard). be no more than a few
hundredths of an inch
To check the calibration of the RTD separately from the control system larger than the probe being
temperature indicator, disconnect the RTD from the electronics. calibrated.
Connect the RTD to a precision instrument capable of measuring resis- • Avoid placing fluids in
tance. (The process version of Field Metrology Wells have the required a dry-well. If fluids are
electronics built in.) required, use a Micro-Bath
instead.
Adjust the temperature of the bath or dry-well to each of the test points
(With Field MetrologyWells these test points can be preprogrammed and • If climbing a ladder is
automated. ) required, dry-wells are
safer than baths, and
At each test point record the readings of the temperature standard and handheld dry-wells may be
RTD . the most convenient.
If measuring the RTD separate from its measurement electronics, compare Additional resources
8 the measured resistances to the expected resistance from the applicable For more in depth information
about this application check out
temperature table. Otherwise, compare the reading on the instrument display these videos and application notes
to the reading of the temperature standard (which may be the dry-well). from Fluke.
How to Calibrate an RTD
Using a Dryblock Calibrator
webinar
914X Field Metrology Wells
Video Series
~ Industrial Temperature
~ Calibrators Workload Matrix
968 www.tech-equipments.comlsales@tech-equipments.com
To perform the test: • Dry-wells have inserts
that are interchangeable
Isolate the sensor from the process. and have a variety of hole
patterns to accommodate
Fully immerse the sensor into a precision temperature source, such as a various probe sizes.
dry-well or bath capable of covering the required temperature range.
• To achieve published
For best accuracy, also fully immerse a temperature standard into the dry- performance levels, the
well or bath for comparison (the process version of Field Metrology Wells insert's hole size should
have a built-in precision readout for the temperature standard). be no more than a few
hundredths of an inch
To check the calibration of the RTD separately from the control system larger than the probe being
temperature indicator, disconnect the RTD from the electronics. calibrated.
Connect the RTD to a precision instrument capable of measuring resis- • Avoid placing fluids in
tance. (The process version of Field Metrology Wells have the required a dry-well. If fluids are
electronics built in.) required, use a Micro-Bath
instead.
Adjust the temperature of the bath or dry-well to each of the test points
(With Field MetrologyWells these test points can be preprogrammed and • If climbing a ladder is
automated. ) required, dry-wells are
safer than baths, and
At each test point record the readings of the temperature standard and handheld dry-wells may be
RTD . the most convenient.
If measuring the RTD separate from its measurement electronics, compare Additional resources
8 the measured resistances to the expected resistance from the applicable For more in depth information
about this application check out
temperature table. Otherwise, compare the reading on the instrument display these videos and application notes
to the reading of the temperature standard (which may be the dry-well). from Fluke.
How to Calibrate an RTD
Using a Dryblock Calibrator
webinar
914X Field Metrology Wells
Video Series
~ Industrial Temperature
~ Calibrators Workload Matrix
968 www.tech-equipments.comlsales@tech-equipments.com
