DH Instruments E-DWT-H, Руководство по эксплуатации и обслуживанию

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E-DWT-H OPERATION AND MAINTENANCE MANUAL
© 2009 DH Instruments, a Fluke Company Page 34
Table 5. Settings made by AutoRange
SETTING/SELECTION PURPOSE SET TO SECTION
Unit Set pressure unit of measure Operator specified during
AutoRange 3.7.3
Full scale Establish span maximum Operator specified during
AutoRange None
AutoRange span Basis of span based setting
calculations Zero gauge to AutoRange full
scale None
Q-RPT Select most appropriate Q-RPT
to cover range and mode. Q-RPT with lowest span whose
full scale is greater than
AutoRange full scale 1.2.3.1
Upper limit Set maximum pressure alarm
limit. 105 % of operator entered full
scale pressure 3.8.4
Resolution Set display resolution 0.01% of AutoRange span or
1 ppm of default Q-RPT span,
whichever is larger 3.8.2
Stability Limit Set Ready/Not Ready stability
criterion. 0.01% AutoRange span or 5
ppm of default Q-RPT span,
whichever is larger 3.8.3
 OPERATION
To use the AutoRange function, press [AutoRange] and respond to the RPM4-E-DWT’s
prompts.
Select pressure unit of measure: The screen is identical in appearance and function
to the [UNIT] screen (see Section 3.7.3).
Enter the AutoRange full scale pressure: Enter the full scale pressure value in the
<------> entry field and press [ENT] . If the full scale value entered exceeds the maximum
of RPM4-E-DWT, an error message appears.
View proposed AutoRange range: The proposed AutoRange range screen is:
1. Indication that this is a screen of the proposed AutoRange
range.
2. Designator and position of the Q-RPT that AutoRange has
selected to cover the AutoRange full scale and measurement
mode.
3. Pressure unit of measure specified in AutoRange.
4. AutoRange full scale pressure.
AutoRange A70M Hi
psi 5000g
Note
IN a dual Q-RPT model, if AutoRange selects a Q-RPT but you would like
to use the other one, the cursor control keys may be used to toggle
between Q-RPTs so that the other can be selected.
Accept proposed AutoRange: To accept the proposed AutoRange and go to the MAIN
RUN screen with the new AutoRange range active, press [ENT] or [AutoRange] . To
modify the AutoRange full scale or pressure unit of measure, use [ESC] to back through
the AutoRange screens and make changes.
Note
•
In a dual Q-RPT model, the E-DWT-H Lo Q-RPT Shut off valve protects
the Lo Q-RPT (1 000 psi max) from overpressure when the Hi Q-RPT is
in use. Familiarize yourself with E-DWT-H operation (see Section 3.4)
before changing ranges and applying pressures. Always turn the Lo
Q-RPT Shut off valve fully in the direction of the lighted green LED
before applying pressure.