How should SiC heating element resistance be measured?

Room-temperature resistance cannot represent high-temperature resistance for SiC elements. Below 600℃, small impurities may cause large resistance changes.

For replacement review, use available voltage and current records at a stated steady temperature of 1000℃ or above to calculate operating resistance. Collect records only under the furnace site's approved maintenance and electrical procedure; this answer is a procurement checklist.

Label each record with the furnace zone, element position or circuit group, date, temperature and connection arrangement. Voltage and current must describe the same element or verified circuit scope at the same operating condition. A whole-group value must not be labelled as the resistance of one rod. Keep supplier test values, room-temperature readings and installed operating records separate; mark unavailable values as unknown.

Use the SiC resistance measurement worksheet for the full evidence checklist and series and parallel resistance matching FAQ for connection-specific guidance.

Related Products

• SiC heating element types — identify the installed shape before comparing electrical records.
• ED type equal-diameter SiC rods — review straight-rod dimensions together with resistance and furnace conditions.

Send the records, dimensioned drawing, furnace atmosphere, replacement quantity and known measurement conditions through the SiC replacement RFQ, or contact Henan Lasting to clarify missing evidence.