User manual FLUKE FPG8601

[. . . ] FPG8601TM/VLPCTM Operation and Maintenance Manual © 2007 DH Instruments, a Fluke Company FPG8601TM/VLPCTM OPERATION AND MAINTENANCE MANUAL High pressure liquids and gases are potentially hazardous. Energy stored in these liquids and gases can be released unexpectedly and with extreme force. High pressure systems should be assembled and operated only by personnel who have been instructed in proper safety practices. © 2007 DH Instruments, a Fluke Company All rights reserved. Information in this document is subject to change without notice. [. . . ] The following sections detail each configuration option. 6. 6. 1 [SETTINGS] The [Settings] options are always enabled for use regardless of the current run mode or user level. When any run mode with data acquisition is enabled, it is recommended that these settings not be changed to avoid inconsistent results. The state of each parameter is logged in the data file at the beginning of the run mode. Changes in the parameters may have an impact on the data but will not be directly reflected in the data file. Figure 28. System Settings LABEL Pressure Head (cm) (entry field) DESCRIPTION The height difference in cm from the DUT to the reference level of the FPG. The FPG reference level is slightly above the center of the mounting post (see Section 2. 6. 1). The convention is to use a negative height value when the DUT is below the reference level and a positive height when the DUT is above the reference level. The calculated head correction is logged for each point when a data acquisition run mode is active. A rate of change of pressure per second limit used to determine a ready condition when automatic VLPC pressure control is not active. If the rate of change of FPG pressure exceeds this limit, the <Ready Indicator> on the <Run Display> is set to red for "Not Ready". The value must be entered as a percentage of the current system range. The range is typically the range of the VLPC when it is active. A symmetrical positive and negative limit around the target pressure within which the controlled pressure is to be maintained. If the controlled pressure deviates from this limit the <Ready Indicator> is set to red for "Not Ready" (see Section 3. 6). The value must be entered as a percentage of the current system range. The range is typically the range of the VLPC when it is active. When the <Use default pressure resolution> option is not checked, this field determines the number of digits to display in the FPG (and DUT) pressures. The formatting is applied to the pressure in the currently selected pressure unit. New pressure unit selections will have no bearing on the resolution displayed. When this option is checked, FPG Tools uses default display resolution based on the pressure unit selected. User defined units may not display an appropriate amount of pressure resolution (see Section 6. 9. 1). In this case, uncheck the option and make and appropriate resolution selection. Stability Setting (%current range) (entry field) Hold Setting (%current range) (entry field) FPG Pressure display resolution (drop down list) Use default pressure resolution (check box) © 2007 DH Instruments, a Fluke Company Page 68 6. [. . . ] The full scale value is the maximum value or the span of a measurement range. Limits and specifications are often expressed as % FS. Acceleration due to gravity at location of use (gl). Pressure expressed relative to atmospheric pressure. [. . . ]