| 摘要 |
PROBLEM TO BE SOLVED: To automatically perform zero-resetting with temperature changes in the operating environment of a HT check sensor. SOLUTION: Environment temperature at a location in the vicinity of a sensor head 6 is measured by a temperature controller 9. In the case that the environment temperature changes relative to a set temperature, zero-resetting is automatically performed on a sensor amplifier 7 and a display 8 by an external microcomputer 10.
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