| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit internal pressure sensor unit connectable independent of the type of the console.SOLUTION: A circuit internal pressure sensor unit 100 which measures the internal pressure of a liquid circuit 200 and which is connected to one selected from among three or more types of consoles 300 with a different supply voltage V1 and transmits the measurement result, the circuit internal pressure sensor unit 100 comprising: a sensor 111 for converting the internal pressure of the liquid circuit 200 into a measurement signal S1; a reference voltage generation circuit 121 for generating a reference voltage V2 on the basis of the supply voltage V1 supplied from the console 300; a determination circuit 122 which compares the reference voltage V2 with the supply voltage V1 supplied from the console 300 to determine that the supply voltage V1 is any of the voltages; and an amplifier circuit 123 which has three or more amplification modes selectable according to the determination result and amplifies the measurement signal S1 to an output signal S2. |
