The reasons for temperature deviation in oven temperature tester measurements
Equipment-related issues
- Sensor aging or damage: Core components like thermocouples and thermal resistors experience performance degradation over time.
- Internal circuit faults: Malfunctions in amplification circuits or AD conversion modules affect signal processing accuracy.
- Insufficient device precision: The instrument’s accuracy grade fails to meet high-demand temperature testing scenarios.
Improper testing operations
Poor sensor contact with the measured object: Air gaps reduce heat transfer efficiency.
- Damaged or poorly shielded test cables: External interference distorts measurement signals.
Environmental and operational influences
- Excessive ambient temperature fluctuations: Operating conditions exceed the instrument’s specified range.
- Uneven airflow or radiation in the furnace: Causes local temperature variations.
- Unstable power supply: Affects the performance of internal electronic components.
Lack of calibration and maintenance
- Infrequent calibration: Measurement benchmarks drift over time without periodic adjustments.
- Contamination on sensors or enclosures: Oil, dust, or debris impairs heat conduction and signal transmission.
Neglect of regular maintenance: Internal component dust accumulation or moisture leads to performance degradation.
