After system has stabilized, record the gauge reading and the weight. Spin the vertical piston and ensure that it is floating freely.Īllow a few moments for the system to stabilize before taking any readings. Turn the handle of the adjusting piston or screw pump to ensure that the weight and piston are supported freely by oil. Select a weight and place it on the vertical piston Ensure that the test gauge is reading zero, if not correct the zero error and ensure that the gauge is reading zero before proceeding with the calibration exercise. Proceed with the calibration according to the following steps:Ĭonnect the pressure gauge to the test port on the dead weight tester as shown in the diagram above. To calibrate a pressure gauge with a dead weight tester, set up the device on a level, stable workbench or similar surface as shown in the diagram below: As liquids are considered incompressible, the displaced liquid causes the piston to rise within the cylinder to balance the downward force of the weights.Ĭalibrating a Pressure Gauge with the Dead Weight Tester: If the weights are in kilogram (kg) units and the area of piston in meters square, then the calculated pressure unit is in N/m2 or pascal.ĭuring calibration, the system is primed with liquid from the reservoir, and the system pressure is increased by means of the adjusting piston. If weights are in pounds (lbs) units and the area in inch square, then the calculated pressure unit is in Pounds per square inch(PSI). So for each weight added, the pressure transmitted within the oil in the dead weight tester is calculated with the above formula because the area of the piston of the tester is accurately known. These weights balance the upward force created by the pressure within the system: To carry out tests or calibrate a pressure gauge with the dead weigh tester(DWT), accurately calibrated weight masses (Force) are loaded on the piston (Area), which rises freely within its cylinder. Please see How a Dead Weight Tester Works for a detailed description of the working principle of the device. The adjusting piston is used to make sure that the vertical piston is freely floating on the oil. The reservoir accumulates oil displaced by the vertical piston during calibration tests when a large range of accurately calibrated weights are used for a given gauge.
If you selected the Line spacing options button, then you should see the window below where you can make additional adjustments to the settings concerning the line spacing for this text box.ĭo you need to position your text box differently because it doesn’t look correct on your slide? Find out how to center a text box in Powerpoint 2013 and use the application to center it on the slide automatically.The dead weight tester also contains an oil reservoir and an adjusting piston or screw pump.
If you don’t want to use one of the options listed, or if you want to change other settings concerning the line spacing, then click the Line spacing options button instead of one of the default option. Step 3: Click the Home tab at the top of the window, then click the Line Spacing button in the Paragraph section of the ribbon and choose the desired spacing. Step 2: Choose the slide at the left side of the window, that contains the text box, then click inside that text box to make it active. Step 1: Open your presentation in Powerpoint 2013. You will be able to select from several different line spacing options to meet your needs. The steps in this article assume that you currently have a text box in Powerpoint 2013 for which you would like to change the line spacing. How to Switch to Double Spacing in a Text Box in Powerpoint 2013 Our tutorial below will show you how to change the line spacing for a text box in Powerpoint 2013 if you need to increase or decrease the amount that is currently being used. You may not be able to increase the size of the text, but you can make it easier to read by adjusting the line spacing. While an ideal scenario will make the presentation easy to view for your audience, you might find that the display is smaller than you would like, making smaller text difficult to read. When designing your slides in Powerpoint, you often need to consider where those slides are being presented.