Operation
K240 Issue No. 2
TIME OUT
If a key is not pressed within 10 minutes then the instrument times out and switches off.
To disable this automatic time out, hold the LEAK key when switching on the pressure indicator.
LEAK TEST
To perform a leak test, press the LEAK key 3 times. The symbol flashes on the display
with the number 60. To start the leak test press the LEAK key again. The instrument
counts down 60 seconds displaying the leakage at the end of the 60 second period. Press
the LEAK key at any time during the leak test to quit and return to normal measurement.
ZERO
A zero should be performed on gauge and differential instruments before measuring
pressure. To perform a zero: Open all pressure ports to atmospheric pressure. Press
the and TARE keys together, the display briefly shows
ZErO
and the instrument
calculates a new zero.
Note: A zero can only be performed on absolute pressure indicators if a vacuum is
first applied to the pressure port.
Alarm
A single alarm can be set to operate when the displayed pressure value rises above the
alarm setting. The alarm causes the display to flash and a beeper to sound for one minute.
Pressing TARE and UNITS keys together displays the alarm value, pressing the FILTER
key increases the alarm value, pressing the UNITS key decreases the alarm value. When
the display shows the required alarm value, press the TARE key to set the alarm.
Druck DPI 705 IS User Guide
Display Symbols
Switch Tare on or off (changes the
display reading to zero)
Switch filter on or off
Change units
(1 of 16
pressure units,
°C or °F)
Switch on or off
View maximum,
minimum or perform leak
test (max/min is reset at
switch on)
Batteries are low, replace, in a safe
area, observing polarity shown on case
Displayed reading - maximum value
Displayed reading - minimum value
TARE
Filter applied
(10 reading rolling average)
Tare applied
Displayed reading - leakage (per minute)
Leak test in progress
(count down)
A
(flashing)
Alarm - pressure value
more than alarm setting
s
t
Software Version
This guide contains operating instructions for pressure indicators
with software version 1.XX. Further changes to the pressure indicator's software may require a change to the
operating instructions and an issue number change of the guide.
