| 摘要 |
<p>A transmitter (8) with a flame arresting header (16) senses a pressure of a process fluid with a diaphragm (44) which is sealed to the header. The diaphragm (44) transfers the pressure of the process fluid acting on an outer surface of the diaphragm (44) to a fill fluid (50). A pressure sensor (18) enclosed in the transmitter (8) senses the pressure of the fill fluid (50) providing an output representative of the pressure of the process fluid. The header (16) includes a chamber (48) on an outer face of the header (16) and a passageway (54) extending from the chamber (48) to a tapered opening (56) inside the transmitter (18) with a first portion (58) adjacent to the tapered opening (56) shaped to receive an inlet tube (52) sealed with a tapered seal and leading to the sensor (18) and a second flame isolating portion (70) open to the chamber (48). The second passageway portion (70) is shaped for flame isolating the tapered seal (60) from the process fluid.</p> |
