Title:
PNEUMATIC TUBE TYPE HEAT SENSOR
Document Type and Number:
Japanese Patent JP3284287
Kind Code:
B2
Abstract:
PURPOSE: To easily perform a fire operation test by providing a fire signal self holding means, and a fire signal self holding function releasing means which releases the self holding function of the fire signal self holding means.
CONSTITUTION: A movable cover is set in a closed state in an warning state, and a fire signal self holding function release switch TS is turned off. When a test is performed, air is injected through test hole 19 by opening the movable cover and switching over the switch TS to a test side by operating a switch lever 18, and a time from the start of injection to the start of operation is measured. Confirmation for operation is performed by putting on an operation confirmation lamp 20. Thence, a time from the start of operation to restoration is measured. The movable cover is set in an open state, and the fire signal self holding function release switch TS is turned on, therefore, no self holding function is executed, and when the contact of a diaphragm 3 is opened, the operation confirmation lamp 20 puts off. Therefore, the time from the start of operation to the restoration can be obtained by measuring a time from putting-on to putting-off of the operation confirmation lamp 20.
Inventors:
Toshitaka Okada
Yoshio Hashimoto
Yoshio Hashimoto
Application Number:
JP33852193A
Publication Date:
May 20, 2002
Filing Date:
December 28, 1993
Export Citation:
Assignee:
Nomi Disaster Prevention Co., Ltd.
International Classes:
G08B17/04; G08B17/00; (IPC1-7): G08B17/04
Domestic Patent References:
| JP524196A | ||||
| JP55141891U | ||||
| JP56132686U | ||||
| JP4426132B1 |
Attorney, Agent or Firm:
Yu Saito (2 outside)
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