Fluke RPM4 manual RPT Calibration Using Caltool for Rpts Software, Allow abs Neg g mode? 1yes 2no

RPM4™ OPERATION AND MAINTENANCE MANUAL

5.2.5 TURNING OFF ABSOLUTE AND NEGATIVE GAUGE MEASUREMENT MODES FOR AXXX (ABSOLUTE) Q-RPTS

PURPOSE

To prevent operation in absolute and negative gauge measurement modes on an Axxx (absolute) Q-RPT that has been calibrated for gauge mode only.

PRINCIPLE

Axxx (absolute) Q-RPTs are frequently used in gauge measurement mode only (see Section 3.3.3,  PRINCIPLE). Axxx Q-RPTs that are used in gauge mode only, may be calibrated in gauge mode with a reference that applies gauge pressures. Calibration with an absolute reference is not necessary. However, if an Axxx Q-RPT is calibrated in gauge mode, it is not possible to know if it is in or out of tolerance in absolute and negative gauge modes. To avoid using absolute and negative gauge measurement modes with an Axxx Q-RPT that is calibrated for gauge mode only, access to absolute and negative gauge modes can be turned OFF. This is accomplished in the [SPECIAL], <8cal> menu.

OPERATION

See Section 5.2.7 for more detailed information on editing and viewing Q-RPT calibration information.

Turning absolute and negative gauge mode operation ON and OFF for a Q-RPT occurs in the same area in which calibration coefficients are edited. To access the Q-RPT calibration editing area press [SPECIAL], <8cal> and select the desired Q-RPT. Then select <1edit> to make changes.

[ENT] through the calibration information screens. After viewing the values of PA and PM the display is:.

Allow abs and HI

neg g mode? 1yes 2no

The cursor is on the number corresponding to the current selection. Make the desired selection. <1no> causes absolute and negative gauge modes to be unavailable for the Q-RPT.

5.2.6 Q-RPT CALIBRATION USING CALTOOL FOR RPTS SOFTWARE

To calibrate RPM4 Q-RPTs using CalTool software, refer to Sections 5.2.1,

PRINCIPLE, 5.2.2, and 5.2.3 in this manual and then refer to the CalTool for RPTs Software Manual.

CalTool for RPTs software and manual are supplied on the RPM4 General Accessories Disk and can be downloaded from www.dhinstruments.com.

5.2.7 EDITING AND VIEWING Q-RPT CALIBRATION INFORMATION

PURPOSE

View and/or edit Q-RPT calibration information fields including:

•The calibration date – This field is normally used to record the date on which the Q-RPT is calibrated.

•The value of absolute mode AutoZero Poffset (Axxx Q-RPTs only) – See Section 3.5.1 for complete AutoZero information. This value is normally set to zero following absolute measurement mode calibration of an Axxx Q-RPT.

•The value of PA – The pressure adder for the selected Q-RPT (see Sections 5.2.1.1).

•The value of PM – The pressure multiplier for the selected Q-RPT (see Sections 5.2.1.1).

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