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Appendix B Components B-23
B.15 Sensor Unit
The sensor unit (SNSU) monitors the intake-air temperature and humidity. In the
M9000, this unit is mounted only on a base cabinet. When the output value of the
sensor exceeds the reference value, XSCF issues an alarm to the system.
FIGURE B-17 shows the SNSU.
FIGURE B-17 Sensor Unit (SNSU)
SNSU has the following characteristics.
■ Only cold replacement is available for the SNSU.
■ Only the temperature sensor and the humidity sensor are mounted.
■ Data processing such as A/D conversion is performed with the operator panel
(OPNL).
■ The SNSU has a label bearing the printed component number and manufacture's
serial number.