5
ROUTINE MAINTENANCE
DUT Verification Introduction
5-12 TP04300 Series Interface & Applications Manual
DUT Verification Introduction
Verification determines whether or not the TP04300A System is currently calibrated to
standard or if the System needs to be recalibrated.
Before the TP04300A System is calibrated, or at any time the system calibration is questioned,
perform the verification procedure as outlined below.
If periodic verifications show that the calibration performance has stabilized and is well within
specifications, then the follow-up calibration procedure is not required.
To ensure an accurate System sensor verification, follow the proper temperature sensing
techniques. Contact the Temptronic Service department if you have any questions.
The verification procedure must be performed by a qualified technician. Verify that the
instrumentation (external precision temperature Monitor and thermocouple sensor) used to
sense the working surface temperature is in calibration. This instrumentation must be
calibrated against a primary or transfer standard.
Verification is performed at a high temperature and a low temperature. Verification can also be
done at other temperatures (offsets) if desired.
It is not recommended to use verification techniques which require inserting the Monitor
thermocouple sensor into the main Air “close to, but not touching” the System’s factory
installed main Air thermocouple: precisely positioning the Monitor thermocouple is uncertain,
and even small variants in Monitor thermocouple siting can skew (cause inaccurate)
measurement results and prevent repeatable measurements during current and future
verification sessions.
The following Approved Verification procedures use the Monitor or RTD Simulator output,
connected in series, as a precise, repeatable, input to the System, and applies to verifying
sensor accuracy in main Air, and DUT: T, K, RTD, Diode modes.
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