Abstract: For easy centralized management of measurement data and installation environmental data and user's real-time recognition through a certain type of peripheral equipment of how the installation environment affects the measured values at the site of measurement, a data logger for a measurement device includes in its structure any of the sensors for temperature, humidity, air pressure, and acceleration as an environmental sensor that detects a physical quality of an environment where the measurement device is installed, a data recording unit that records installation environmental data detected by the environmental sensor and measurement data detected by the measurement device on the basis of time, and a data processing unit that displays the installation environmental data and measurement data in whole or selectively, as numerical values or graphs of changes over time, with the time axes aligned, and includes one or more external equipment terminal connectors that exchange signals with external equipment.

Abstract: Provided is a measuring system capable of stably, safely, and easily measuring hazardous fine particles. A measuring system 10 includes a work space 3 in which measuring equipment 5 can be installed, a containment device 13 that defines the work space 3 by closing portions other than an open section 134 and an air inlet 132 and an air outlet 133, a temperature and humidity control device 11, a filter unit 12, and a first connection means 14, a second connection means 15, and a third connection means 16 that connect the above-described components. Accordingly, in the measuring system 10, air whose temperature and humidity are controlled circulates, and a laminar flow flows in the work space 3, and particles floating in the work space 3 are reliably contained inside the measuring system 10.

Abstract: Provided is a pipette tip having a visual indicator capable of confirming depth of liquid in contact with the pipette tip during a suction work. In the pipette tip, a marker-is formed on an outer surface of the pipette tip in a circumference direction in a tip end area in a tip end side for confirming the depth of liquid in contact with the pipette tip. Thereby, the depth of liquid in contact with the pipette tip is confirmed based on the marker directly or relatively.

Abstract: Provided is a mass sensor including a four-corner-adjusting-mechanism capable of reducing the sensitivity of four-corner adjustment without reducing the rigidity of a Roberval mechanism. A mass sensor (1) includes a Roberval mechanism (2) in which a floating frame (21) and a fixing frame (22) are connected by upper and lower sub-frames (23, 24) having thin portions (23b) formed thereon, and a four-corner-adjusting-mechanism (4) to perform parallelism adjustment. The four-corner-adjusting-mechanism (4) includes an adjusting screw (41), and an upper elastic member (42u) and a lower elastic member (42d) disposed in series in the vertical direction so as to sandwich the sub-frame (23) to be subjected to parallelism adjustment.

Abstract: To provide an electric pipette in which the impact resistance against the dropping of the electric pipette is elevated, the external breakage of the device and the damage of operation performances are reduced, and the discharging performance of the device is maintained and ensured. An electric pipette 100 including a main casing 1, an operation switch 14, a hand grip 15, a display-operation section 9, a release switch 12 and a finger rest 16, in which at least one shock absorber 201 to 206 disposed on at least one apex of at least one line among a line LF, a line LB, a line LL, a line LR and a line LU, which are prepared by drawing lines between two or more projecting sites in each of a front surface 100F, a back surface 100B, a left side surface 100L, a right side surface 100R and an upper surface 100U.

Abstract: Provided is a leveling mechanism for a weighing device that facilitates horizontal leveling of the weighing device. The leveling mechanism (2) includes a foot piece (10) having a foot portion (11) that in contact with an installation surface and a foot piece shaft (12) that extends upward from the foot portion and has a male screw (14) on its outer periphery, a rotatable body (20) having on its inner periphery a female screw, a housing (30) for accommodating the rotatable body engaged with the foot piece, a fixing portion (S2, 36) for fixing the housing to a device case (3), and a housing space (6) covering the housing, provided in the device case. The leveling mechanism converts a rotational motion of the rotatable body to a vertical motion of the foot piece.

Abstract: To provide a method for calibrating a discharge volume of the pipette that enables accurate measurement of the discharge volume under arbitrary conditions, and to provide an apparatus therefor. The method including the steps of, setting a preset volume by the pipette that is actually used in a measurement (S1), sucking liquid that is actually used in the measurement into the pipette chip that is actually used in the measurement while aiming to be sucked the preset volume (S2), discharging the liquid sucked in the pipette chip onto a measuring apparatus (S3), determining an actual discharge volume of the pipette based on the weight measured (S4 to S6) and calculating a ratio between the preset volume and the actual discharge volume and correcting a sucking amount so as to bring the sucking amount to match an amount obtained by multiplying the preset volume by the ratio (S7 to S9).

Abstract: To provide a weighing apparatus by which it is possible for a user himself/herself to determine poor performance of the apparatus is a factor attributable to an installation environment, and the weighing accuracy is improved. Respective temporal fluctuations in weighed data detected from a load measuring mechanism 2 and environmental measurement data detected in an environmental measurement means 10 are recorded in a correlative manner in an arithmetic processing unit 32, and the temporal fluctuations are visually recognizable via a display unit 31. Thereby, the correlation between the environmental variations and the weighed data is visually disclosed, which makes it possible for a user to easily recognize that poor performance of the apparatus is attributable to the environmental variations, that increases the reliability of the weighing apparatus.

Abstract: A weighing apparatus is provided that quantifies an impact load based on an electrical output from a mass sensor to prevent damage to the mass sensor by disclosing the degree of impact to a user. The weighing apparatus includes a weighing unit on which an object is placed and a mass sensor that receives the mass×acceleration of gravity of the object as a load and measures mass from an electrical signal corresponding to displacement of an internal structure of the apparatus. The apparatus quantifies and records the amount of the displacement, and determines acceleration by a numerical calculation from the displacement data. The obtained acceleration quantifies the amount of impact applied on the weighing apparatus by the object, and may be used to warn the user when the weighing apparatus is in danger of damage.

Abstract: To provide a method and an apparatus for evaluating a reachable range of a shear rate of a fluid by using a concept of a shear rate propagation constant in evaluating the properties of the fluid. The apparatus for measuring a viscosity in which a vibrator (1) dunked in the fluid and to be measured is vibrated for measuring the viscosity by means of an amplitude change which is influenced by a viscosity resistance of the fluid includes a step (S1) of measuring a fluid density, a step (S2) of measuring the fluid viscosity, a step (S3) of calculating an angular frequency of the vibrator, and a step (S4) of calculating a shear rate propagation constant “Z” from Equation (1), wherein increase of the shear rate propagation constant “Z” is evaluated as increase of a reachable range of the shear rate applied to the fluid from the vibrator (1).

Abstract: To provide an electric pipette in which the impact resistance against the dropping of the electric pipette is elevated, the external breakage of the device and the damage of operation performances are reduced, and the discharging performance of the device is maintained and ensured. An electric pipette 100 including a main casing 1, an operation switch 14, a hand grip 15, a display-operation section 9, a release switch 12 and a finger rest 16, in which at least one shock absorber 201 to 206 disposed on at least one apex of at least one line among a line LF, a line LB, a line LL, a line LR and a line LU, which are prepared by drawing lines between two or more projecting sites in each of a front surface 100F, a back surface 100B, a left side surface 100L, a right side surface 100R and an upper surface 100U.

Abstract: To prevent measurement errors caused by impact including an impact load transmitted at high speed or static electricity and prevent destruction of a sensor unit due to the above-mentioned impact load. Through-holes (12f) are formed in four corners of a pan receiver, upwardly protruding pieces (14a) of a plate spring fixed to a bottom surface of the pan receiver are inserted into the through-holes (12f), and pan receiver legs are attached to the upwardly protruding pieces (14a).

Abstract: Provided is a new method to obtain a shear rate of a fluid and Provided are a program and a device for the method. In the method, a pair of vibrators (1,1) are vibrated by an electromagnetic drive (2) and a viscosity of the sample liquid (9) is calculated by measuring a driving current of a coil (2b), which has a step (S1) of calculating the viscosity (?) of the sample liquid (9), a step (S2) of calculating a driving force (F) on a center of a wet part of the vibrator from the driving current (I), and a step (S3) of calculating a shear stress (S) exerted on the sample liquid from the driving force (F) and a liquid contact area of the vibrator (A), wherein the shear rate (D) is calculated from a ratio between the shear stress (S) and the viscosity (S4).

Abstract: A weighing device is provided that suppresses air convection currents generated in a weighing chamber in the opening/closing of a door of the chamber with a relatively simple configuration. A weighing space is partitioned into two spaces with a partition plate to form a lower small-capacity weighing chamber, which enables to settle down the convection in a short time if convection is generated in the chamber. Suspended walls adjacent to the doors are attached to the partition plate edge sides along the door opening/closing directions. Even when a door is opened, warm air stagnant in the upper space in the chamber is restricted or blocked to flow out to the outside by the suspended walls, which generates no convection or slight convection, which settles down in a short time, without adverse effect on a weighing operation. The upper space may be utilized for another purpose such as a neutralization chamber.

Abstract: A portable, small-sized device is provided to accurately conduct a leakage test for a liquid volume meter such as a pipette. In operation, pipette P is connected to the device main body side via a tube. A command from a central processing unit causes a pump to perform a suctioning operation to depressurize the pipette P side to a predetermined pressure. Any pressure changes over a predetermined period of time are monitored by a pressure sensor. The central processing unit determines whether there is leakage from the pipette P, and displays a judgment result on a display unit. In particular, when a diaphragm pump is used as the pump, the pulsation of an air flow occurring in a suction operation is attenuated in a pressure vessel so as not to have harmful effects on either the inspection results or the pipette P side.

Abstract: The effect of air flow on a weighing dish is minimized by the following relatively simple arrangement. A mounting member (1) having a protection dike (1D), an engaging ridge (1B), and a outermost peripheral engaging wall (1A) formed in a concentric manner about an opening (1C) to insert therethrough a connecting portion (2A) is disposed on an upper casing (3) of a weighing device located on a lower surface of a weighing dish (2). First and second windproof walls (4, 5) are positioned by fitting to an inner peripheral wall of the engaging ridge 1B and the engaging wall (1A), respectively, and can be easily removed when necessary, such as for cleaning. For example, the second windproof wall (5) is formed higher than the first windproof wall (4), thereby enabling effective obstruction of air flow from the outside.

Abstract: A weighing apparatus is provided that quantifies an impact load based on an electrical output from a mass sensor to prevent damage to the mass sensor by disclosing the degree of impact to a user. The weighing apparatus includes a weighing unit on which an object is placed and a mass sensor that receives the mass×acceleration of gravity of the object as a load and measures mass from an electrical signal corresponding to displacement of an internal structure of the apparatus. The apparatus quantifies and records the amount of the displacement, and determines acceleration by a numerical calculation from the displacement data. The obtained acceleration quantifies the amount of impact applied on the weighing apparatus by the object, and may be used to warn the user when the weighing apparatus is in danger of damage.

Abstract: For easy centralized management of measurement data and installation environmental data and user's real-time recognition through a certain type of peripheral equipment of how the installation environment affects the measured values at the site of measurement, a data logger for a measurement device includes in its structure any of the sensors for temperature, humidity, air pressure, and acceleration as an environmental sensor that detects a physical quality of an environment where the measurement device is installed, a data recording unit that records installation environmental data detected by the environmental sensor and measurement data detected by the measurement device on the basis of time, and a data processing unit that displays the installation environmental data and measurement data in whole or selectively, as numerical values or graphs of changes over time, with the time axes aligned, and includes one or more external equipment terminal connectors that exchange signals with external equipment.

Abstract: To prevent measurement errors caused by impact including an impact load transmitted at high speed or static electricity and prevent destruction of a sensor unit due to the above-mentioned impact load. Through-holes (12f) are formed in four corners of a pan receiver, upwardly protruding pieces (14a) of a plate spring fixed to a bottom surface of the pan receiver are inserted into the through-holes (12f), and pan receiver legs are attached to the upwardly protruding pieces (14a).

Abstract: To provide a weighing apparatus by which it is possible for a user himself/herself to determine poor performance of the apparatus is a factor attributable to an installation environment, and the weighing accuracy is improved. Respective temporal fluctuations in weighed data detected from a load measuring mechanism 2 and environmental measurement data detected in an environmental measurement means 10 are recorded in a correlative manner in an arithmetic processing unit 32, and the temporal fluctuations are visually recognizable via a display unit 31. Thereby, the correlation between the environmental variations and the weighed data is visually disclosed, which makes it possible for a user to easily recognize that poor performance of the apparatus is attributable to the environmental variations, that increases the reliability of the weighing apparatus.