Title:
ELECTROPNEUMATIC POSITIONER
Document Type and Number:
Japanese Patent JP3447481
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce the number of workers and transceivers in the case of performing a loop check.
SOLUTION: A liquid crystal display part 7G is provided in an electropneumatic positioner 7. A flow value Qpv from a flow meter 4 is fed to the electropneumatic positioner 7. The liquid crystal display part 7G is formed so that it can selectively display the flow value Qpv from the flow meter 4, an actual opening 0pv from a regulating valve 3 and an internal temperature tpv. By this way, in the case of performing a loop check, it is only required that workers A, B are respectively arranged in a side of a host supervisory system 1 and the regulating valve 3 to make the worker A carry a transceiver 5-1 and the worker B carry a transceiver 5-2. That is, by eliminating necessity for stationing a worker in a side of the flow meter 4, even necessity for using two sets of the transceivers is eliminated.
Inventors:
Minoru Fukuda
Application Number:
JP20453396A
Publication Date:
September 16, 2003
Filing Date:
August 02, 1996
Export Citation:
Assignee:
YAMATAKE CORPORATION
International Classes:
F15B9/09; (IPC1-7): F15B9/09
Domestic Patent References:
| JP7180701A | ||||
| JP528391A | ||||
| JP473477A | ||||
| JP684004U |
Attorney, Agent or Firm:
Masaki Yamakawa