JPS6488250A - Particle analyzer - Google Patents

Particle analyzer

Info

Publication number
JPS6488250A
JPS6488250A JP62246292A JP24629287A JPS6488250A JP S6488250 A JPS6488250 A JP S6488250A JP 62246292 A JP62246292 A JP 62246292A JP 24629287 A JP24629287 A JP 24629287A JP S6488250 A JPS6488250 A JP S6488250A
Authority
JP
Japan
Prior art keywords
pressure
value
sheath liquid
sensor
pressure value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62246292A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Azumaya
Naoki Yuguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP62246292A priority Critical patent/JPS6488250A/en
Publication of JPS6488250A publication Critical patent/JPS6488250A/en
Priority to US07/990,922 priority patent/US5245318A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To properly perform maintenance and control by storing the pressure value given by a pressure control system and comparing the same with the pressure value applied during measurement by the pressure control system to detect the reduction of a sheath liquid and detecting the clogging of a filter from the pressure value of the pressure control system. CONSTITUTION:The sheath tube in a sheath liquid container 5 is guided to a nozzle 11 through an impurity removing filter 8 and a pressure sensor 9. The set pressure from the outside and the output of the sensor 9 are inputted to a control circuit 17 for controlling the output of the sensor 9 to a set value and the circuit 17 controls the pressure of the sensor 9 to constant value through an electric regulator 3 for a sheath liquid. The initial pressure value when the container 5 is filled with the sheath liquid is stored and, from the difference between said value and the pressure value during measurement, the reduction of the sheath liquid is discriminated and, when the pressure value exceeds an alarm value by the advance of the clogging of the filter 8, clogging is judged. Therefore, maintenance and control can be easily performed.
JP62246292A 1987-07-24 1987-09-30 Particle analyzer Pending JPS6488250A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62246292A JPS6488250A (en) 1987-09-30 1987-09-30 Particle analyzer
US07/990,922 US5245318A (en) 1987-07-24 1992-12-15 Particle analyzing apparatus having pressure control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62246292A JPS6488250A (en) 1987-09-30 1987-09-30 Particle analyzer

Publications (1)

Publication Number Publication Date
JPS6488250A true JPS6488250A (en) 1989-04-03

Family

ID=17146379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62246292A Pending JPS6488250A (en) 1987-07-24 1987-09-30 Particle analyzer

Country Status (1)

Country Link
JP (1) JPS6488250A (en)

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