If you are undercharged, we will absorb the cost. The entire risk as to the quality and performance of the equipment is with the Buyer. Should the equipment prove defective following its purchase the Buyer and not the Seller, manufacturer, distributor, or retailer assumes the entire cost of all necessary servicing or repair.
Buyer may inspect the equipment prior to purchase and placement of the order. Failure to inspect prior to placement of an order is deemed a waiver of Buyers right to inspect. Buyer is responsible for determining the suitability of the equipment for its application.
Seller assumes no liability for the use or misuse of any equipment purchased by Buyer. It is assumed that the equipment will be installed and operated by qualified personnel.
The Buyer agrees that the Seller shall not be held responsible or liable for any injuries or damages, whether incidental or consequential, associated in any way with the equipment purchased. The Buyer, by purchasing this equipment, indicates its acknowledgment of, and agreement, to the terms of this limited warranty. INDEMNITY Buyer shall be solely liable for, and shall defend, indemnify, and hold Seller, its Affiliates, and all of their respective directors, officers, employees, agents, and independent contractors Indemnitees harmless from and against any and all damages, liabilities, injuries, losses, costs including reasonable attorneys and experts fees at trial and on appeal , and expenses which may be incurred by, asserted against, or recoverable from any Indemnitee as a result of any actual or threatened action, suit or proceeding arising out of or relating in any way to the purchase of equipment from Seller.
The validity and interpretation of this Agreement and the enforcement thereof shall be governed by the laws of the State of California without regard to any principles governing conflicts of laws. Any dispute arising from the purchase of equipment from Seller must be resolved in the State Courts of California. Delivery: Device as shown, no further accessories, manual available as pdf Conservation: used, optically and technically good, I exclude the ribbon from the warranty, it is subject to aging.
The scale is overhauled by the manufacturer before delivery. Top condition. Refurbished by the manufacturer, 6 months warranty. The instrument was maintained in our laboratory and connected to the used HB moisture analyzer to test its performance.
It is working properly Java Balance test option screen. It is not recommended to use Standard Deviation mode. Before the balance can be used, it is necessary to tare the balance via the software, not by the tare buttons on the balances themselves. The software tare measures the difference between the averaged tare value of the reference and unknown balance pans. These buttons are circled in Figure 14, below.
Taring the balance. This will save the tare value to the Tare field. See the notes in Counterweighting the Cahn, below. Before taring the Cahn electrobalance, determine whether to tare with weighing paper or crucible:. For example, if a folded piece of weighing paper is being used to collect the sample powder, place folding paper of the same size on the reference pan.
When weighing ICP samples, it is often the practice of the technicians to tare the Cahn with weighing paper, then add a reference mass equal to the sample being weighed mg to the tare pan.
Once the mass has been obtained, use the controls on the lower left corner of the software to select an analysis as shown in Figure 16, below. If you are measuring CHNS samples, you must select away from this analysis, then back to it, in order to proceed. If you are measuring any other type of sample, simply select that analysis. This will return to the main screen and should show the Label ID of the selected sample. That field was for Moisture and Density MAD analysis, for which the containers are pre-weighed, and is no longer applicable in Java Balance.
Calibration verification of the balance systems are carried out daily by the laboratory technical staff. Known masses should be measured at least daily to ensure that the balances are properly measuring mass; it is not possible to see this from the values on the balance LED or LCD screens; measurements must be performed using the balance software and the time-averaged, reference-normalized methodology.
Be sure to weigh several weights to ensure that the balance performance is both accurate and linear across the desired mass range. The Mettler-Toledo XS balances should be able to obtain a value within 10 milligrams of the true mass under fairly calm sea conditions and if the measured mass and reference mass are close to one another. For both balances, when sea state is high, this level of performance will degrade. The user should measure reference masses to get an estimate of the uncertainty under high sea state conditions.
Accuracy - the agreement of a balance reading with the value as set by a reference standard. If load is increased beyond the rated capacity of the balance, the balance may become damaged, reducing accuracy and repeatability.
For balance user purposes these are not changeable. Calibration - standardization of measuring instrument: the checking of a measuring instrument against an accurate standard to determine any deviation and correct for error or determination whether or not characteristic of the instrument are within specifications.
For Mettler-Toledo and Cahn electrobalance calibration is completed onshore with manufacturer. History - shows a list of tare value or list of final weight mass number since last log-in.
Measurement — number of measurements the software uses to determine final mass. Parameter set in Test Options.
Readability - the least significant digit that can be resolved from the readout under normal conditions. Reference Mass — a known mass that is used to accurately determine unknown mass. Tare — tells the program to ignore any weight currently on balance and measure new from that weight. Test Option — sets parameters for current test.
Includes number of counts required for measurement. This is how the balance knows when to stop taking measurements. Standard deviation limit and confidence limits are also shown here but are not changeable by the user. The original document was written by Heather Barnes on and was subsequently revised a couple times by David Houpt, most recently on Subsequent changes to this wiki page are documented in the Confluence page history.
Balances User Guide v Laboratory Manuals, Guides, and Resources. Pages Blog. Page tree. Browse pages. A t tachments 28 Page History. Jira links. Created by Unknown User 25dbb4eebceb0de , last modified by Unknown User avila on Feb 23, Table of Contents. Cahn C31 Electrobalance. Figure 1. Figure 2. Calibration Verification The user can verify calibration at any time by weighing a mass standard. Make sure both balance trays are clear and the doors are closed. To power down the MT balances, the software control program must be turned off.
Cahn Electrobalance To power up the Cahn electrobalance, press the power switch on the rear panel. Press the power switch on the rear panel to turn the Cahn electrobalance off. Balance Software The balances aboard the ship are used in a variety of ways, giving rise to separate software for each application. NET Balance Master software to make the mass determination. The Cahn electrobalance in the Microbiology Radiation Van Rad Van is used to weigh small masses of isotopes and samples; operation of that balance is not covered in this guide.
Balance Master The Balance Master program was created for the convenience of the chemistry technicians, who needed to be able to weigh out reagents without needing to upload those weights into the database, and was later adopted for the X-ray technician for LOI measurements as well. Upon opening Balance Master, the initial screen Figure 3 will be seen: Figure 3. Balance Master initial screen. Balance Master Configuration The technician should ensure that Balance Master is configured properly.
Figure 4. Balance Master configuration screen. Measurement Options The user has the option of selecting either a set number of counts or a limit of precision for the balance measurement as shown in Figure 5, below. Figure 5. Measurement option window Figure 6. Taring the Balance All of the paired balance systems on the ship must be tared via their control software, not by the tare buttons on the balances themselves.
Figure 7. Completed tare step. Making a Measurement Once the tare is completed, the user can place the material to be weighed on the unknown right-hand balance, and a mass of standard reference masses approximately equal to the unknown to be weighed refer to Precision Weighing at Sea for an explanation of this requirement. Helpful Hint It is not necessary to wait for the measurement to complete if it is obvious that the reagent being weighed out is too much or too little.
History and Export Features The History window will show the last few measurements made by the balance, and the user can scroll through all of the masses measured since the software was started. Calibration Feature When the balance project began, the JRSO did not know if it would be necessary to calibrate the Mettler-Toledo XS balances on top of the factory calibration, as they were being used in a manner different from the usual laboratory scenario.
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