JP2008076307A - Apparatus and method for viscosity measurement - Google Patents

Apparatus and method for viscosity measurement Download PDF

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JP2008076307A
JP2008076307A JP2006257872A JP2006257872A JP2008076307A JP 2008076307 A JP2008076307 A JP 2008076307A JP 2006257872 A JP2006257872 A JP 2006257872A JP 2006257872 A JP2006257872 A JP 2006257872A JP 2008076307 A JP2008076307 A JP 2008076307A
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pressure
coating liquid
viscosity
time
value
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Nobuyuki Hayashi
信之 林
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Asahi Sunac Corp
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Asahi Sunac Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To continuously measure changes in viscosity. <P>SOLUTION: A viscosity measuring apparatus A computes the viscosity μ of a solution (a) for coatings by substituting a pressure loss ΔP of the solution (a) for coatings between the upstream end and the downstream end of a conduit 16 and the time T required for a prescribed number of pulse signals, which are outputted every time the quantity of flow of the solution (a) for coatings flowing through the conduit 16 reaches a prescribed quantity, to be outputted into the expression μ=k×ΔP×T (wherein, k is a coefficient based on the quantity of flow corresponding to the output interval of the pulse signals). Since the viscosity is measured on the basis of the pressure and the quantity of flow of the solution (a) for coatings actually flowing through the conduit 16, it is possible to continuously measure changes in viscosity in real time. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、粘度測定装置及び方法に関するものである。   The present invention relates to a viscosity measuring apparatus and method.

特許文献１には、塗料の粘度をブルックフィールド型粘度計で測定する技術が記載されている。ブルックフィールド型粘度計を用いて塗料の粘度を測定する手段としては、塗料を測定用のカップに貯留し、そのカップ内にブルックフィールド型粘度計のローターを浸漬させて、ローターに作用する回転抵抗に基づいて粘度を測定する方法が考えられる。
特開２００１−１２９４５４公報 Patent Document 1 describes a technique for measuring the viscosity of a paint with a Brookfield viscometer. As a means of measuring the viscosity of a paint using a Brookfield type viscometer, the paint is stored in a measuring cup, and the rotor of the Brookfield type viscometer is immersed in the cup, and the rotational resistance acting on the rotor A method for measuring the viscosity based on the above can be considered.
JP 2001-129454 A

上記の測定方法では、測定対象となるカップ内の塗料が、実際に塗料供給源から塗装ガンに供給されて塗装に供される塗料ではないため、塗装に供される粘度の変化をリアルタイムで連続的に測定することができない。
本発明は上記のような事情に基づいて完成されたものであって、粘度の変化を連続的に測定できるようにすることを目的とする。 In the measurement method above, the paint in the cup to be measured is not actually supplied from the paint supply source to the paint gun and used for painting. Cannot be measured automatically.
The present invention has been completed based on the above circumstances, and an object thereof is to enable continuous measurement of changes in viscosity.

上記の目的を達成するための手段として、請求項１の発明は、塗装用液剤が流動する管路と、前記管路の上流端における前記塗装用液剤の圧力と前記管路の下流端における前記塗装用液剤の圧力との差である圧力損失を検出する差圧検出手段と、前記管路を流れる前記塗装用液剤の流量が所定量に達する毎にパルス信号を出力する流量計と、前記差圧検出手段によって検出された圧力損失ΔＰの値と、前記流量計から所定数のパルス信号が出力されるのに要する時間Ｔの値を、μ＝ｋ・ΔＰ・Ｔ（ｋは、パルス信号の出力間隔と対応する流量に基づく係数）の式に代入することで、前記塗装用液剤の粘度μを演算する演算手段とを備えているところに特徴を有する。
請求項２の発明は、請求項１に記載のものにおいて、前記管路の下流端が大気中に開放されているところに特徴を有する。 As means for achieving the above-mentioned object, the invention of claim 1 is characterized in that the pipe line through which the coating liquid flows, the pressure of the coating liquid at the upstream end of the pipe line, and the pressure at the downstream end of the pipe line are as follows. A differential pressure detecting means for detecting a pressure loss that is a difference from the pressure of the coating liquid, a flowmeter that outputs a pulse signal each time the flow rate of the coating liquid flowing through the pipe reaches a predetermined amount, and the difference The value of the pressure loss ΔP detected by the pressure detecting means and the value of the time T required to output a predetermined number of pulse signals from the flow meter are expressed as μ = k · ΔP · T (k is the pulse signal It is characterized in that it is provided with a calculation means for calculating the viscosity μ of the coating liquid by substituting it into the equation of the coefficient based on the flow rate corresponding to the output interval.
The invention of claim 2 is characterized in that, in the invention of claim 1, the downstream end of the conduit is open to the atmosphere.

請求項３の発明は、塗装用液剤が流動する管路の上流端における前記塗装用液剤の圧力と前記管路の下流端における前記塗装用液剤の圧力との差である圧力損失ΔＰを検出し、前記管路を流れる前記塗装用液剤の流量が所定量に達する毎に流量計から出力されるパルス信号の出力数が、所定数に達するのに要する時間Ｔを測定し、前記圧力損失ΔＰの値と、前記時間Ｔの値を、μ＝ｋ・ΔＰ・Ｔ（ｋは、パルス信号の出力間隔と対応する流量に基づく係数）の式に代入することで、前記塗装用液剤の粘度μを演算するところに特徴を有する。   The invention of claim 3 detects a pressure loss ΔP, which is a difference between the pressure of the coating liquid at the upstream end of the pipeline through which the coating liquid flows and the pressure of the coating liquid at the downstream end of the pipeline. When the flow rate of the coating liquid flowing through the pipe line reaches a predetermined amount, the time T required for the number of pulse signals output from the flow meter to reach the predetermined number is measured, and the pressure loss ΔP By substituting the value and the value of time T into the equation of μ = k · ΔP · T (k is a coefficient based on the flow rate corresponding to the output interval of the pulse signal), the viscosity μ of the coating liquid is obtained. It has a characteristic in the place to calculate.

＜請求項１及び請求項３の発明＞
本発明では、実際に管路を流れている塗装用液剤の圧力と流量とに基づいて粘度を測定しているので、粘度の変化をリアルタイムで連続的に測定することができる。 <Invention of Claims 1 and 3>
In the present invention, since the viscosity is measured based on the pressure and flow rate of the coating liquid actually flowing through the pipeline, the change in viscosity can be continuously measured in real time.

＜請求項２の発明＞
管路の下流端を大気中に開放したので、圧力計は管路の上流端のみに設ければよく、管路の上流端と下流端の両方に圧力計を設ける形態に比べて、圧力計の数が少なくて済む。 <Invention of Claim 2>
Since the downstream end of the pipe line is open to the atmosphere, the pressure gauge only needs to be provided at the upstream end of the pipe line. Compared with the configuration in which pressure gauges are provided at both the upstream end and the downstream end of the pipe line, the pressure gauge The number of is small.

＜実施形態１＞
以下、本発明を具体化した実施形態１を図１及び図２を参照して説明する。本実施形態の粘度測定装置Ａは、塗装用液剤ａ（例えば、塗料、主剤、硬化剤など）の圧送源１０と、液剤流路１４と、ドレンタンク１８とを備えている。圧送源１０は、エア供給源１１からレギュレータ１２を介して圧送した作動エアを、気密状に密閉されている貯留タンク１３内に送り込み、その作動エアの圧力により、貯留タンク１３内に貯留されている塗装用液剤ａを液剤流路１４へ押し出すようになっている。 <Embodiment 1>
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. The viscosity measuring apparatus A according to the present embodiment includes a pumping source 10 for a coating liquid a (for example, a paint, a main agent, a curing agent, etc.), a liquid flow path 14, and a drain tank 18. The pressure supply source 10 sends the working air pressure-fed from the air supply source 11 through the regulator 12 into a storage tank 13 that is hermetically sealed, and is stored in the storage tank 13 by the pressure of the working air. The coating liquid “a” is pushed out to the liquid flow path 14.

液剤流路１４は、上流端が圧送源１０に接続された第１供給路１５と、第１供給路１５の下流端に接続された管路１６と、管路１６の下流端に接続された第２供給路１７とから構成され、第２供給路１７の下流端に上記ドレンタンク１８が設けられている。また、管路１６の断面積は全長に亘って一定である。   The liquid agent flow path 14 is connected to the first supply path 15 whose upstream end is connected to the pressure source 10, the pipe line 16 connected to the downstream end of the first supply path 15, and the downstream end of the pipe line 16. The drain tank 18 is provided at the downstream end of the second supply path 17. Moreover, the cross-sectional area of the pipe line 16 is constant over the entire length.

第１供給路１５の途中には容積式の流量計１９が設けられている。流量計１９は、圧送源１０からドレンタンク１８に至る液剤流路１４（流量計１９よりも下流側の管路１６を含む流路）を流れる塗装用液剤ａの流量を計測するものであり、流量計１９を通過する（即ち、管路１６を流れる）塗装用液剤ａの体積が所定量Ｖｏに達する毎に、パルス信号を制御部２０へ出力するようになっている。   A positive displacement meter 19 is provided in the middle of the first supply path 15. The flow meter 19 measures the flow rate of the coating liquid a flowing in the liquid agent flow path 14 (flow path including the pipe line 16 on the downstream side of the flow meter 19) from the pressure supply source 10 to the drain tank 18. Each time the volume of the coating liquid a passing through the flow meter 19 (that is, flowing through the conduit 16) reaches a predetermined amount Vo, a pulse signal is output to the control unit 20.

また、管路１６の上流端には第１圧力計２１が設けられ、この第１圧力計２１は管路１６の上流端における塗装用液剤ａの圧力を測定し、その測定値を差圧検出部２３（本発明の構成要件である差圧検出手段）へ出力するようになっている。管路１６の下流端には第２圧力計２２が設けられ、この第２圧力計２２は管路１６の下流端における塗装用液剤ａの圧力を測定し、その測定値を差圧検出部２３へ出力するようになっている。差圧検出部２３においては、第１圧力計２１から入力される測定値と第２圧力計２２から入力される測定値との差が算出され、その算出された差圧の値、即ち圧力損失ΔＰが制御部２０に入力されるようになっている。   A first pressure gauge 21 is provided at the upstream end of the pipe line 16, and the first pressure gauge 21 measures the pressure of the coating liquid a at the upstream end of the pipe line 16 and detects the measured value as a differential pressure. It outputs to the part 23 (differential pressure detection means which is a component of the present invention). A second pressure gauge 22 is provided at the downstream end of the pipe line 16. The second pressure gauge 22 measures the pressure of the coating liquid a at the downstream end of the pipe line 16, and uses the measured value as a differential pressure detection unit 23. Output. In the differential pressure detection unit 23, the difference between the measurement value input from the first pressure gauge 21 and the measurement value input from the second pressure gauge 22 is calculated, and the calculated differential pressure value, that is, pressure loss. ΔP is input to the control unit 20.

制御部２０では、流量計１９から入力されるパルス信号の数がカウントされ、入力されたパルス信号の数が所定の数ｎに達するまでに要する時間Ｔを得る。また、制御部２０には、演算部２４（本発明の構成要件である演算手段）が接続されている。演算部２４では、差圧検出部２３で検出された圧力損失ΔＰの値と、流量計１９から所定数ｎのパルス信号が出力されるのに要する時間Ｔの値を、μ＝ｋ・ΔＰ・Ｔの演算式に代入することにより、塗装用液剤ａの粘度μを演算する。尚、ｋは、パルス信号の出力間隔Ｔｏ（＝Ｔ／ｎ）の間に流量計１９を通過する塗装用液剤ａの体積Ｖｏに基づく係数である。   In the control unit 20, the number of pulse signals input from the flow meter 19 is counted, and a time T required for the number of input pulse signals to reach a predetermined number n is obtained. The control unit 20 is connected to a calculation unit 24 (calculation means that is a constituent of the present invention). In the calculation unit 24, the value of the pressure loss ΔP detected by the differential pressure detection unit 23 and the value of the time T required for outputting a predetermined number n of pulse signals from the flow meter 19 are expressed as μ = k · ΔP · By substituting into the T expression, the viscosity μ of the coating liquid a is calculated. Note that k is a coefficient based on the volume Vo of the coating liquid a passing through the flow meter 19 during the output interval To (= T / n) of the pulse signal.

ここで、上記式の意義について説明する。
管路１６の断面積が全長に亘って一定である場合、管路１６の上流端と下流端との間の圧力損失（圧力差）ΔＰが、粘度μと塗装用液剤ａの単位時間当たりの流量Ｑとの積の値μ・Ｑに概ね比例することは周知である。また、単位時間当たりの流量Ｑは、上記の時間Ｔが経過する間に流量計１９を通過する塗装用液剤ａの総体積ｎ×Ｖｏを、時間Ｔで除した値であり、Ｑ＝ｎ・Ｖｏ／Ｔであらわされる。制御部２０でカウントされるパルス信号の数ｎと、パルス信号の出力間隔Ｔｏの間に流量計１９を通過する塗装用液剤ａの体積Ｖｏは、いずれも定数であるから、流量Ｑは時間Ｔに反比例することになる。したがって、粘度μは、ΔＰ／Ｑの値に比例し、換言すると圧力損失ΔＰと時間Ｔの積の値に比例することになり、以上により、上記演算式が得られる。 Here, the significance of the above formula will be described.
When the cross-sectional area of the pipe line 16 is constant over the entire length, the pressure loss (pressure difference) ΔP between the upstream end and the downstream end of the pipe line 16 is equal to the viscosity μ and the coating liquid a per unit time. It is well known that it is generally proportional to the product value μ · Q with the flow rate Q. Further, the flow rate Q per unit time is a value obtained by dividing the total volume n × Vo of the coating liquid a passing through the flow meter 19 while the time T is elapsed by the time T, and Q = n · Expressed as Vo / T. Since the number n of pulse signals counted by the control unit 20 and the volume Vo of the coating liquid a passing through the flow meter 19 during the pulse signal output interval To are both constants, the flow rate Q is equal to the time T. Is inversely proportional to. Accordingly, the viscosity μ is proportional to the value of ΔP / Q, in other words, proportional to the value of the product of the pressure loss ΔP and the time T, and the above calculation formula is obtained.

本実施形態では、実際に管路１６を流れている塗装用液剤ａの圧力と流量とに基づいて粘度を測定しているので、粘度の変化をリアルタイムで連続的に測定することができる。   In the present embodiment, since the viscosity is measured based on the pressure and flow rate of the coating liquid a actually flowing through the pipe line 16, the change in viscosity can be continuously measured in real time.

＜実施形態２＞
以下、本発明を具体化した実施形態２を図３を参照して説明する。本実施形態２の粘度測定装置Ｂは、塗装装置に適用したものであって、塗料ｂ（本発明の構成要件である塗装用液剤）の圧送源３０と、塗料流路３１とを備えており、塗料流路３１は、上流端が圧送源３０に接続された供給路３２と、供給路３２の下流端に接続された管路３３とからなり、管路３３の下流端には、塗料ｂを噴出するためのノズル３４が設けられている。 <Embodiment 2>
Hereinafter, a second embodiment of the present invention will be described with reference to FIG. The viscosity measuring apparatus B according to the second embodiment is applied to a coating apparatus, and includes a pumping source 30 for a paint b (a coating liquid that is a constituent of the present invention) and a paint flow path 31. The paint flow path 31 is composed of a supply path 32 whose upstream end is connected to the pressure feed source 30 and a pipe line 33 connected to the downstream end of the supply path 32. Nozzle 34 is provided for ejecting the gas.

供給路３２の途中には、容積式の流量計３５が設けられている。流量計３５は、圧送源３０からノズル３４に至る塗料流路３１を流れる塗料ｂの流量を計測するものであり、流量計３５を通過する（即ち、管路３３を流れる）塗料ｂの体積が所定量Ｖｏに達する毎に、パルス信号を制御部３６へ出力するようになっている。   In the middle of the supply path 32, a positive displacement flow meter 35 is provided. The flow meter 35 measures the flow rate of the paint b flowing through the paint flow path 31 from the pressure source 30 to the nozzle 34, and the volume of the paint b passing through the flow meter 35 (that is, flowing through the pipe line 33) is the volume. Each time the predetermined amount Vo is reached, a pulse signal is output to the control unit 36.

また、管路３３の上流端には圧力計３７が設けられ、この圧力計３７は管路３３の上流端における塗料ｂの圧力を測定する。一方、ノズル３４から塗料ｂが噴出する状態では、管路３３の下流端のノズル３４が大気に開放されているため、この圧力計３７の測定値が、管路３３の上流端における塗料ｂの圧力と管路３３の下流端（ノズル３４）における塗料ｂの圧力（大気圧）との差である圧力損失となる。つまり、圧力計３７は、本発明の構成要件である差圧検出手段となっている。そして、この圧力計３７で測定された値、即ち圧力損失ΔＰの値が制御部３６に入力されるようになっている。   A pressure gauge 37 is provided at the upstream end of the pipe line 33, and the pressure gauge 37 measures the pressure of the paint b at the upstream end of the pipe line 33. On the other hand, in the state in which the paint b is ejected from the nozzle 34, the nozzle 34 at the downstream end of the pipe line 33 is open to the atmosphere, so that the measured value of the pressure gauge 37 is the value of the paint b at the upstream end of the pipe line 33. The pressure loss is a difference between the pressure and the pressure (atmospheric pressure) of the paint b at the downstream end (nozzle 34) of the pipe 33. That is, the pressure gauge 37 is a differential pressure detecting means that is a constituent of the present invention. The value measured by the pressure gauge 37, that is, the value of the pressure loss ΔP is input to the control unit 36.

制御部３６では、流量計３５から入力されるパルス信号の数がカウントされ、入力されたパルス信号の数が所定の数ｎに達するまでに要する時間Ｔを得る。また、制御部３６には、演算部３８（本発明の構成要件である演算手段）が接続されている。演算部３８では、圧力損失ΔＰの値と、流量計３５から所定数ｎのパルス信号が出力されるのに要する時間Ｔの値を、μ＝ｋ・ΔＰ・Ｔの演算式に代入することにより、塗料ｂの粘度μを演算する。尚、ｋは、パルス信号の出力間隔Ｔｏ（＝Ｔ／ｎ）の間に流量計３５を通過する塗料ｂの体積Ｖｏに基づく係数である。上記式の意義については、実施形態１で説明したとおりである。   In the control unit 36, the number of pulse signals input from the flow meter 35 is counted, and a time T required for the number of input pulse signals to reach a predetermined number n is obtained. The control unit 36 is connected to a calculation unit 38 (calculation means that is a constituent of the present invention). The calculation unit 38 substitutes the value of the pressure loss ΔP and the value of the time T required for outputting a predetermined number n of pulse signals from the flow meter 35 into the calculation formula of μ = k · ΔP · T. The viscosity μ of the paint b is calculated. Note that k is a coefficient based on the volume Vo of the paint b passing through the flow meter 35 during the output interval To (= T / n) of the pulse signal. The significance of the above formula is as described in the first embodiment.

本実施形態２では、実際に管路３３を流れている塗料ｂの圧力と流量とに基づいて粘度を測定しているので、粘度の変化をリアルタイムで連続的に測定することができる。
また、管路３３の下流端（ノズル３４）を大気中に開放したので、圧力計３７は管路３３の上流端だけに設ければよくなっている。したがって、管路３３の上流端と下流端の両方に圧力計を設ける形態に比べて、圧力計３７の数が１つだけで済んでいる。 In the second embodiment, since the viscosity is measured based on the pressure and flow rate of the paint b actually flowing through the conduit 33, the change in viscosity can be continuously measured in real time.
Further, since the downstream end (nozzle 34) of the pipe line 33 is opened to the atmosphere, the pressure gauge 37 may be provided only at the upstream end of the pipe line 33. Therefore, the number of pressure gauges 37 is only one as compared with a configuration in which pressure gauges are provided at both the upstream end and the downstream end of the conduit 33.

＜他の実施形態＞
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施態様も本発明の技術的範囲に含まれる。
（１）上記実施形態１では管路の上下両端間の圧力差を検出する手段として、管路の上流端と下流端の両方に圧力計を設けたが、本発明によれば、管路の下流端を大気圧に開放するとともに、圧力計を管路の上流端のみに設ける構成としてもよい。
（２）上記実施形態２では管路の下流端（塗装ガンのノズル）を大気圧に開放することで、必要な圧力計の数を１つとしたが、本発明によれば、管路の下流端をノズルよりも上流側に設定して、管路の上流端と下流端の双方に圧力計を設け、この２つの圧力計の計測値に基づいて圧力損失を検出してもよい。
（３）上記実施形態１，２では流量計を管路よりも上流側に配置したが、本発明によれば、流量計は、管路の途中に設けてもよく、管路よりも下流側に配置してもよい。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the first embodiment, as a means for detecting the pressure difference between the upper and lower ends of the pipe, pressure gauges are provided at both the upstream end and the downstream end of the pipe. The downstream end may be opened to atmospheric pressure, and the pressure gauge may be provided only at the upstream end of the pipeline.
(2) In Embodiment 2 described above, the number of necessary pressure gauges is reduced to one by opening the downstream end of the pipeline (the nozzle of the coating gun) to atmospheric pressure, but according to the present invention, the downstream of the pipeline The end may be set upstream of the nozzle, pressure gauges may be provided at both the upstream end and the downstream end of the pipe, and the pressure loss may be detected based on the measured values of the two pressure gauges.
(3) In the first and second embodiments, the flowmeter is arranged upstream of the pipe. However, according to the present invention, the flowmeter may be provided in the middle of the pipe and downstream of the pipe. You may arrange in.

実施形態１の構成図Configuration diagram of Embodiment 1 流量計から出力されるパルス信号の波形をあらわすグラフGraph showing the waveform of the pulse signal output from the flow meter 実施形態２の構成図Configuration diagram of Embodiment 2

符号の説明Explanation of symbols

Ａ…粘度測定装置
ａ…塗装用液剤
１６…管路
１９…流量計
２３…差圧検出部（差圧検出手段）
２４…演算部（演算手段）
Ｂ…粘度測定装置
ｂ…塗料（塗装用液剤）
３３…管路
３５…流量計
３７…圧力計（差圧検出手段）
３８…演算部（演算手段） A ... Viscosity measuring device a ... Coating liquid 16 ... Pipe line 19 ... Flow meter 23 ... Differential pressure detection part (Differential pressure detection means)
24 ... Calculation unit (calculation means)
B ... Viscosity measuring device b ... Paint (Liquid for coating)
33 ... Pipe line 35 ... Flow meter 37 ... Pressure gauge (Differential pressure detection means)
38 ... Calculation unit (calculation means)

Claims (3)

塗装用液剤が流動する管路と、
前記管路の上流端における前記塗装用液剤の圧力と前記管路の下流端における前記塗装用液剤の圧力との差である圧力損失を検出する差圧検出手段と、
前記管路を流れる前記塗装用液剤の流量が所定量に達する毎にパルス信号を出力する流量計と、
前記差圧検出手段によって検出された圧力損失ΔＰの値と、前記流量計から所定数のパルス信号が出力されるのに要する時間Ｔの値を、μ＝ｋ・ΔＰ・Ｔ（ｋは、パルス信号の出力間隔と対応する流量に基づく係数）の式に代入することで、前記塗装用液剤の粘度μを演算する演算手段とを備えていることを特徴とする粘度測定装置。 A pipeline through which the coating liquid flows;
Differential pressure detecting means for detecting a pressure loss which is a difference between the pressure of the coating liquid at the upstream end of the pipe and the pressure of the coating liquid at the downstream end of the pipe;
A flowmeter that outputs a pulse signal each time the flow rate of the coating liquid flowing through the pipeline reaches a predetermined amount;
The value of the pressure loss ΔP detected by the differential pressure detecting means and the value of the time T required to output a predetermined number of pulse signals from the flow meter are expressed as μ = k · ΔP · T (k is a pulse A viscosity measuring apparatus comprising: a calculating means for calculating the viscosity μ of the coating liquid by substituting it into an equation of a coefficient based on a flow rate corresponding to a signal output interval. 前記管路の下流端が大気中に開放されていることを特徴とする請求項１記載の粘度測定装置。 The viscosity measuring apparatus according to claim 1, wherein the downstream end of the pipe is open to the atmosphere. 塗装用液剤が流動する管路の上流端における前記塗装用液剤の圧力と前記管路の下流端における前記塗装用液剤の圧力との差である圧力損失ΔＰを検出し、
前記管路を流れる前記塗装用液剤の流量が所定量に達する毎に流量計から出力されるパルス信号の出力数が、所定数に達するのに要する時間Ｔを測定し、
前記圧力損失ΔＰの値と、前記時間Ｔの値を、μ＝ｋ・ΔＰ・Ｔ（ｋは、パルス信号の出力間隔と対応する流量に基づく係数）の式に代入することで、前記塗装用液剤の粘度μを演算することを特徴とする粘度測定方法。 Detecting a pressure loss ΔP which is a difference between the pressure of the coating liquid at the upstream end of the pipeline through which the coating liquid flows and the pressure of the coating liquid at the downstream end of the pipeline;
Measuring the time T required for the number of pulse signals output from the flow meter to reach a predetermined number each time the flow rate of the coating liquid flowing through the pipe line reaches a predetermined amount;
By substituting the value of the pressure loss ΔP and the value of the time T into the formula of μ = k · ΔP · T (k is a coefficient based on the flow rate corresponding to the output interval of the pulse signal), A viscosity measuring method characterized by calculating a viscosity μ of a liquid agent.
JP2006257872A 2006-09-22 2006-09-22 Apparatus and method for viscosity measurement Pending JP2008076307A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102374961A (en) * 2010-08-06 2012-03-14 克朗斯股份公司 Method and device for determining viscosity

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58195136A (en) * 1982-05-08 1983-11-14 Oval Eng Co Ltd Measuring device of fluidity
JPH0378245U (en) * 1989-11-30 1991-08-07

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58195136A (en) * 1982-05-08 1983-11-14 Oval Eng Co Ltd Measuring device of fluidity
JPH0378245U (en) * 1989-11-30 1991-08-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102374961A (en) * 2010-08-06 2012-03-14 克朗斯股份公司 Method and device for determining viscosity

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