Specifications

molbox™ RFM™ OPERATION AND MAINTENANCE MANUAL
© 1998-2007 DH Instruments, a Fluke Company Page 140
5.2.4.2 VIEWING AND EDITING RPT PA, PM AND
CALIBRATION DATE
 PURPOSE
To view or edit PA and PM calibration coefficients (see Section
5.2.1.1) and the
calibration date
for each Reference Pressure Transducer (RPT). Capability to
view and edit the values of the reference resistors used by molbox RFM’s ohmic
measurement system (see Section
5.3) is also provided here. This capability is
normally used only by a DHI Authorized Service Provider.
Editing RPT and/or reference resistor calibration information will affect
molbox RFM pressure and/or temperature measurements and can cause
out-of-tolerance flow measurements. RPT calibration information should
only be edited by qualified personnel as part of the calibration process.
Caution should be taken to avoid accidental editing. For information on
preventing access to calibration information see Section 3.6.2).
 OPERATION
Press [SPECIAL] and select <4cal>, <1pressure>. Select the desired RPT:
<1upstrm> or <2dnstrm or <3micro>. Then select <2view> to view information
only or <3edit> to make changes to calibration information.
The display is:
1. Current adder (always in Pascal [Pa]. This is
an edit field if <3edit> was selected.
2. Indication of which RPT calibration information
is being viewed/edited.
3. Current multiplier (dimensionless). This is an
edit field if <3edit> was selected.
PA: 0.0 dwnstrm RPT
PM: 1.00000
If <3edit> was selected, edit the values of PA and PM as desired.
Pressing [ESCAPE] returns to the <1run 2view 3edit> screen without
making changes. Press [ENTER] to continue.
The display is:
1. Current calibration date in YYYYMMDD format
for the selected RPT. This is an edit field if
<3edit> was selected. The default date is
19980101.
Dnstrm RPT cal date:
20030214
If <3edit> was selected, edit the calibration date as desired using a
YYYYMMDD format. Pressing [ESCAPE] returns to the <1run 2view 3edit>
screen without making changes. Press [ENTER] to continue. If <3edit> was
selected and changes have been made to PA, PM or the calibration date, a
confirmation screen is presented to <Activate changes>. Pressing [ESCAPE]
or selecting <1no> returns to the <1run 2view 3edit> screen without
making changes. Selecting <2yes> activates changes and returns to the
<1run 2view 3edit> screen.
There is a specific calibration date for each RPT. Changing the calibration
date of one RPT does not change the others.