Fluke A20M-AF, A70M, HPMS 5.3.6 Q-RPT CALIBRATION USING CALTOOL FOR Q-RPTS SOFTWARE , 5.3.7 EDITING AND VIEWING Q-RPT CALIBRATION INFORMATION

5. MAINTENANCE, ADJUSTMENTS AND CALIBRATIONS

 OPERATION

See Section 5.3.7 for more detailed information on editing and viewing Q-RPT calibration

information.

Turning absolute 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 absolute Hi

meas mode: 1off 2on

The cursor is on the number corresponding to the current selection. Make the desired selection.

<1no> causes absolute mode to be unavailable for the Q-RPT.

5.3.6 Q-RPT CALIBRATION USING CALTOOL FOR Q-RPTS SOFTWARE

To calibrate RPM4 Q-RPTs using CalTool software, refer to Sections 5.3.1, 5.3.2, 5.3.3

and 5.3.4 in this manual and then refer to the CalTool for Q-RPTs Software Manual.

CalTool for Q-RPTs software and manual are supplied on the RPM4 A70M/A20M

Support Disk and can be downloaded from www.dhinstruments.com.

5.3.7 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 – See Section 3.5.1 for complete AutoZero

information. This value is must be set to zero for a Q-RPT that just been calibrated. It

should be set to zero before making adjustments.

• The value of PA – The pressure adder for the selected Q-RPT (see Section 5.3.1.1).

• The value of PM – The pressure multiplier for the selected Q-RPT (see Section 5.3.1.1).

• Absolute measurement mode ON or OFF – See Section 3.3.3,  PRINCIPLE for

complete information on measurement modes. This is set to OFF if a Q-RPT was

calibrated in gauge mode with a gauge pressure standard.

 OPERATION

As editing PA and PM values will change the calibration of the Q-RPTs, the edit function

should only be used by qualified personnel as part of the calibration process. Caution should be

taken to avoid accidental editing. A user level security system is available to control access (see

Section 3.5.5.5).

A new RPM4 is delivered with PA and PM values set to zero and 1 for all ranges. This does not

mean that the RPM4 has not been calibrated. In the original factory calibration, privileged f actory

coefficients are used for calibration with the user PA and PM set to zero and 1.