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PERFORMING A TEST
This test only functions if the
to system until
stress) pressure has been entered the system must be pressurised
to this level. Bleed system. The display will then clear until test time
has elapsed.
automatically logged with test conditions. This logged reading can
be replayed on screen by pressing
Epson compatible printer by pressing
output to a PC other than via Hyper Terminal. Consecutive records
will overwrite each other so must be output to printer before
performing another test. After showing the
will immediately revert to current pressure. The instrument must be
reset manually for each new test.
PRESSURE TRANSDUCER SELECTION
Models HHP-2024, 2084
At switch-on press and hold the
and the display will scroll through the available transducer range
option, 10.0 to 50.0 Bar (in 5 Bar steps) or 55.0 to 500.0 Bar (in 5
Bar steps) (release to select) --- appears on the display. To
customise press and hold the
again to select the required input voltage range, 10.0 to 50.0 Bar
with 1 to 50mV (in 1mV steps) or 55.0 to 500.0 Bar with 10 to 50mV
(in 1mV steps) (release to select). These are now the default
settings.
EXTERNAL PRESSURE TRANSDUCER CONNECTION
Pressure range selectable (in Bar) with Sensitivity range
selectable (in mV).
Power supplied
+5 Volts (± 0.25 Volts equivalent to 5%)
Wiring instructions
Red Wire = + supply, Blue Wire = - supply,
Green Wire = + signal, Yellow Wire = - signal
WARNING: Care should be taken to ensure the wiring
instructions are followed as incorrect wiring of the cable to the
transducer may damage the instrument.
USER DEFINED SCALE
Press
key and
Enter scale percentage. Only the first two digits entered are valid -
this gives a scaling from 1 - 99%. This value will be multiplied into
current display to give user defined scale. Press
will stay displayed and current reading will appear. A downward
arrow will indicate that this feature is active.
WARNING - whilst in this mode over range indication (out) is
disabled. Do not over pressure the instrument.
INSTRUMENT ACCURACIES
From +20°C to +30°C/+68°F to +86°F
From -10°C to +50°C/+14°F to +122°F 0.15%rdg +0.15%fs +1 digit
The overall performance of the instrument is obtained by combining the stated accuracy
and any uncertainty due to the measurement process.
P1
changes to
PASS
or
FAIL
NE
will appear before the display clears.
P1
symbol is displayed. Apply pressure
P2
(Test Pressure). If a
will appear on the display and be
and keys or output to an
and keys. It cannot be
key (HHP-2024 - "
key (HHP-2024 - "
0.1%rdg +0.1%fs +1 digit
P1
1
4
PASS/FAIL
the display
0.0
to accept.
(pre-
0.0
" key)
" key)
NE
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