Delta HD2105.1, Руководство по эксплуатации

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HD2105
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V2.3
is possible to repeat the print at will, but while the HOLD mode is on, the sample identifier
number is not increased. This is useful when more labels must be printed with the same
identification code without increasing the code each time.
The message "SMPL ID REL=RSET SER=PRINT" is scrolled in the comment line: using
the arrows (
and ) the currently measured sample identifier value can be changed.
By holding the REL/ key down the proposed number is rapidly set to zero.
The instrument's heading information will be printed using the SERIAL key.
3) AUTO-HOLD function : the instrument normally operates in continuous view mode,
which is set by default. In this mode the displayed measurement is updated every second. If
the Auto-Hold function is enabled, the instrument performs the measurement and when it
stabilizes it goes in HOLD mode. To update the display indication, press pH/mV (please see
the description of the pH/mV key for further explanation).
In the following figure you can see an example of the measurement process with the Auto-
Hold function enabled. An electrode is immersed into a liquid and, to perform the measure-
ment, the pH/mV key is pressed: The pH measurement raises progressively reaching the fi-
nal value. The HOLD symbol blinks. In the stretch indicated by 1, the measurement remains
stable for 10 seconds, within two digits: at the end of this interval (point 2), the instrument
goes into HOLD mode, presenting the final stable value.
2 digit
10s
t
pH
pH
1
To perform a new measurement, it is necessary to press again the pH/mV key.
4) Print and log interval : sets the interval in seconds between two loggings or data transfers
to the serial port. The interval can be set at 0, 1s, 5s, 10s, 15s, 30s, 60s (1min), 120s (2min),
300s (5min), 600s (10min), 900s (15min), 1200s (20min), 1800s (30min) and 3600s (1hour).
If the value 0 is set, SERIAL works on command: the sending of data to the serial port
is performed each time the key is pressed
. Recording (LOG) is performed with one sec-
ond intervals even if the interval is set to 0. With an interval from 1 to 3600s, continuous
data transfer is started when the SERIAL key is pressed. To end the recording (LOG) and
continuous data transfer operations (SERIAL with an interval greater than 0), press the
same key again.
5) Sleep_Mode_LOG (Automatic turning off during recording) (only HD2105.2): this
function controls the instrument's automatic turning off during logging, occurring between
the capture of a sample and the next one. When the interval is lower than 60 seconds, the in-
strument will always remain on. With intervals greater than or equal to 60 seconds, it is pos-
sible to turn off the instrument between loggings: it will turn on at the moment of sampling
and will turn off immediately afterwards, thus increasing the battery life. Using the arrows
select
YES and confirm using ENTER in order to enable the automatic turning off, select
NO and confirm to disable it and keep the instrument on continuously.