Title:
SIGNAL TRANSMITTER IN HANDLING EQUIPMENT SUCH AS GAS METER IN EXPLOSIVE ATMOSPHERE
Document Type and Number:
Japanese Patent JP2878182
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To perform the data communication between various kinds of handling equipments such as plural gas meters, etc., and a fixed equipment by giving safety as a security by performing a signal transmission by the signal transmission means arranged in an explosion-proof box.
SOLUTION: A remote control part 3 is composed of a signal transmission part 19 for performing the signal transmission with the signal transmission part 7 of a gas packing device 2 and an operation part 20. This signal transmission part 19 is arranged at the upper portion of the rotary center of a rotary base 1 and is composed of an explosion-proof box (including an explosion-proof case and bag, etc.,) 21 and a light projecting/receiving device 22 in the same way as the signal transmission part 7 and the light projecting/receiving device 22 is stored within the explosion-proof box 21. Further, the operation part 20 is made to perform the signal transmission by a wire or radio communication system with the signal transmission part and is composed of a tare-weight input means 24, a code state detection part 25 and a data display/storage part 26. Thus, because the light projecting/receiving device 22 composing the signal transmission part 7 is arranged within the explosion-proof box 21, data communication can be safely performed even under explosive atmosphere.
Inventors:
MASADA HIROSHI
Application Number:
JP11017696A
Publication Date:
April 05, 1999
Filing Date:
April 04, 1996
Export Citation:
Assignee:
TAKARA KEIKI SEISAKUSHO KK
International Classes:
G08C19/00; G08C23/04; (IPC1-7): G08C19/00; G08C23/04
Domestic Patent References:
| JP61118900A |
Attorney, Agent or Firm:
Yu Oyama (2 outside)