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

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3. OPERATION
Page 17 © 2009 DH Instruments, a Fluke Company
3. Operation
3.1 General Operating Principles
3.1.1 Multiple Ranges (HI and LO Q-RPT, AutoRange)
The E-DWT-H’s Reference Pressure Monitor (RPM4-E-DWT) may have one or two Quartz
Reference Pressure Transducers (Q-RPTs). The higher range Q-RPT is designated the
Hi Q-
RPT. The lower range Q-RPT is designated the Lo Q-RPT. Which Q-RPT is active is
indicated continuously by characters in the upper right hand corner of the MAIN RUN screen
and most other screens (<Hi> for Hi Q-RPT, <Lo> for Lo Q-RPT).
Each RPM4-E-DWT Q-RPT has a default range which is its maximum range. Additional
ranges, lower than the Q-RPT’s maximum, may also be created using AutoRange and
AutoTest (see Sections 3.7.5, 3.1.3). Ranges created using AutoRange are temporary but
may be saved with all their settings for reactivation (see Section 3.8.1).
The ranges available on the RPM4-E-DWT are accessed using [RANGE] (see Section 3.7.2)
and/or created using [AutoRange] (see Section 3.7.5).
An RPM4-E-DWT range is identified by a range screen showing the Q-RPT used by the
range, its current unit of measure and its full scale pressure. The range screen is:
1. Q-RPT designator.
2. Type of range. DF for the Q-RPT’s default (maximum) range; AR for
a range created by AutoRange.
3. Q-RPT position designator.
4. Current pressure unit of measure.
5. Full scale pressure, with <g> for gauge mode.
Active A70M DF Hi
psi 10000g
Most settings made in an RPM4-E-DWT, such as unit of measure, display resolution and stability
setting are specific to the range. Settings selected while one range is active apply to that range
and not to other ranges. The range specific settings are stored with the range and recalled
whenever the range is made active. This makes setting up ranges a convenient way to store and
recall frequently used operating configurations. See Table 3 for a listing of RPM4-E-DWT
adjustments and settings and whether they are range, Q-RPT or system specific.