RPM4-AD™ OPERATION AND MAINTENANCE MANUAL
© 2005-2007 DH Instruments, a Fluke Company
Page 46
The display is :
1. Maximum acceptable pressure of the
Lo
Q-RPT (always absolute).
2. Position designator of active Q-RPT (
<Hd>
for
differential mode).
3.
Indication that opening SDS will open both the
Pt
and
Ps
TEST
ports.
Pmax! 160 kPa a Hd
Open Pt&Ps? 1no 2yes
Check that the pressure applied to BOTH the
TEST
ports does NOT exceed the
maximum acceptable value. Select
<1no>
to return to the MAIN RUN screen
without OPENING SDS, select
<2yes>
to OPEN SDS for both Q-RPTs and
return to the MAIN RUN screen with SDS OPEN (both Q-RPTs open to their
TEST
ports).
3.3.8.2
SDS IN PARALLEL MEASUREMENT MODE, RPM4-AD
A160K/A160K ONLY
In parallel mode both Q-RPTs are connected together internally by the
RPM4-AD’s internal bypass valve (see Section 3.2.5). For gauge
measurement mode, the active TEST port is the TEST(Pt) port. For absolute
measurement mode, the active TEST port is the TEST(Ps) port. Opening SDS
opens SDS for the TEST port that is used for the active measurement mode.
In parallel measurement mode (see Section 3.2.5), the RPM4-AD’s two RPTs are
connected to one
TEST
port by the internal bypass valve. Only one
TEST
port is
used depending on the measurement mode. The
(Ps) TEST
port is used for
absolute mode, the
(Pt) TEST
port is used for gauge mode.
[SDS]
OPENS and
CLOSES SDS on the test port that is used, the other port is always kept CLOSED.
Pressing
[SDS]
always CLOSES any ON and OPEN SDS, as it does in single
Q-RPT mode operation. However, if SDS for the active
TEST
port is CLOSED,
pressing SDS goes to the usual OPEN SDS routine which will OPEN SDS for active
TEST
port.
The display is :
1. Maximum acceptable pressure of the
HL
Q-RPT (always absolute).
2. Position designator of active Q-RPT (
<HL>
in
parallel mode.
3. Active
TEST
port on which SDS will be
opened (
Pt
in gauge measurement mode,
Ps
in absolute measurement mode).
Pmax! 160 kPa a HL
Open Pt? 1no 2yes
Check that the pressure applied to the active
TEST
port does NOT exceed the
maximum acceptable value. Select
<1no>
to return to the MAIN RUN screen
without OPENING SDS, select
<2yes>
to OPEN SDS and return to the MAIN
RUN screen with SDS OPEN (both Q-RPTs open to the active
TEST
port).
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