1-3
Chapter 1 Functionality, Configuration, and Structure of this Device and CommStaff
• Main unit: Composed of a compound semiconductor sensor, an A/D
circuit, a pressure-receiving diaphragm, an excess pressure
protection mechanism, etc.
• Cover flanges: Parts which sandwich the sides of the main unit to maintain
pressure.
• Adapter flanges: Used attached to the cover flanges. Connected to connecting
pipes.
• Bolts and nuts: Used in interposing the main unit between the cover flanges.
• Vent/drain plug: Used when clearing the vents and drains.
• Flange: In the JTC, JTE, and JTH models, used along with the opposing
process flange to sandwich the diaphragm base.
• Diaphragm base: In the JTC, JTE, and JTH models, receives the measured
pressure.
• Capillary tube: In the JTE and JTH models, connects the main unit and the
diaphragm base.
• Electronics module: Electronic circuit which processes and transmits differential
pressure signals etc.
• Flexible cable: Part which electrically connects the main unit and the
electronics module.
• Transmission unit case: Houses the electronics module, terminal block, etc.
• Case cover: Cover for sealing the transmission unit case.
• Terminal block
with integrated indicators:
Terminals to which to connect electrical signals.
CommStaff can also be connected here. The indicators are
optional.