EP 1217359 A9 20020904 - Method for determining the fouling tendency of a liquid and quartz microbalance for using the method
Title (en)
Method for determining the fouling tendency of a liquid and quartz microbalance for using the method
Title (de)
Verfahren zur Feststellung der Verschmutzungsanfälligkeit von Flüssigkeiten und Quarzmikrowaage zu deren Durchführung
Title (fr)
Procédé de mesure du pouvoir entartrant d'un liquide et microbalance à quartz pour la mise en oeuvre de ce procédé
Publication
Application
Priority
FR 0016696 A 20001220
Abstract (en)
[origin: EP1217359A1] Measuring the furring capacity of a liquid in contact with a substantially hotter wall, e.g. of a heat exchanger pipe, uses a micro-balance (10) with a quartz vane (11) and two electrodes - an upper excitation electrode (12) or working electrode, and a lower excitation electrode (14). The two electrodes are connected to an oscillator (55) which vibrates the quartz vane at one of its resonance frequencies. The micro-balance, located in a cell through which the furring liquid is continuously circulated, also has a heating system (20, 22, 56) for the lower electrode, a system (12, 24, 58) for continuously measuring the temperature of the working electrode, a heat regulator (61) to maintain its temperature at the actual temperature of the liquid employed, and a continuous vibration frequency meter for the quartz vane. The temperature measuring system comprises a thermocouple with two electrodes, one being the working electrode (12) and the other of a different metal forming a junction with it.
IPC 1-7
IPC 8 full level
G01N 17/00 (2006.01); G01N 27/00 (2006.01)
CPC (source: EP)
G01N 17/008 (2013.01); G01N 29/036 (2013.01); G01N 2291/0256 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1217359 A1 20020626; EP 1217359 A9 20020904; FR 2818380 A1 20020621; FR 2818380 B1 20030404
DOCDB simple family (application)
EP 01403308 A 20011220; FR 0016696 A 20001220