| 摘要 |
PROBLEM TO BE SOLVED: To provide a differential pressure transmitter capable of preventing coagulation of a fluid which is to be measured by estimating heat retention condition of a pressure guiding piping or a flange which guide in the fluid to be measured, using the signal of a temperature sensor built in a case. SOLUTION: A differential pressure/pressure transmitter detects the pressure of a fluid which is to be measured from a process. The differential pressure transmitter comprises a single or a plurality of temperature sensors, a calculation circuit, and a storage circuit, and has such function as estimates the temperature of the transmitter flange or the transmitter external pressure guiding piping from the signal of the temperature sensor, and outputs a report signal if the estimated temperature approaches a preset temperature. COPYRIGHT: (C)2003,JPO
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