Title:
METHOD FOR DETECTING LEAKAGE IN AUTOMATIC DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2578296
Kind Code:
B2
Abstract:
PURPOSE: To provide a method for detecting leakage in an automatic dispensing device, whereby leakage is objectively judged by measuring of the internal pressure of a pump connected to a nozzle chip.
CONSTITUTION: In step 202, a pump sucks distilled water 90 and if the internal pressure P1 of the pump after suction approximates atmospheric pressure, leakage is recognized as taking place. In step 203, after the internal pressure P1 of the pump after suction is measured in step 202, a chip 36 is not raised but stopped for e.g. thirty minutes and the internal pressure P2 of the pump is measured again using a pressure sensor. When the internal pressure P2 differs from the previously measured internal pressure P1, leakage is recognized as taking place. In step 204, the distilled water 90 sucked is discharged into identical test tubes 62, and while the internal pressure of the pump is monitored by the pressure sensor, leakage is recognized as taking place if there is an abrupt fluctuation in the internal pressure. Therefore, measurement for detection of leakage is completed when the leakage is detected.
Inventors:
TAKEDA MASAAKI
KATO JUKO
KATAKI HITOMI
KATO JUKO
KATAKI HITOMI
Application Number:
JP23460392A
Publication Date:
February 05, 1997
Filing Date:
September 02, 1992
Export Citation:
Assignee:
AROKA KK
ABOTSUTO LAB
ABOTSUTO LAB
International Classes:
G01M3/26; G01N35/10; (IPC1-7): G01N35/10
Domestic Patent References:
| JP2243962A | ||||
| JP217448A | ||||
| JP60207062A | ||||
| JP6264912A |
Attorney, Agent or Firm:
Kenji Yoshida (2 outside)