Delta OHM HD2109.1, Руководство по эксплуатации

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HD2109
- 10 -
V2.4
The instrument has an Auto-Hold function, which can be set in the MENU, that "freezes" the meas-
urement automatically when it has been stable (
within 1 digit ) for over 10 seconds: the message
HOLD is displayed.
To perform a new measurement, it is necessary to press the FUNC/ENTER key.
The HOLD message starts blinking, while the display follows the actual measurement trend, until it
stabilizes again and the HOLD message remains still.
In the menu, the key clears or cancels the active function (ESC).
REL/ key
In measurement mode, it displays the difference between the current value and that measured on
pressing the key. The
REL message appears on the display; press the key again to return to the
current measurement.
When used in the menu, it decreases the current variable value.
MENU Key
The first menu item is accessed by initially pressing on the MENU key; press ENTER to go to the
following items. To modify the item displayed, use the arrow keys (
and ). The current value is
confirmed by pressing the ENTER key and the display moves on to the next parameter. If pressing
ESC the setting is cancelled.
To exit the menu, press the MENU key at any time.
The menu items are listed in this order:
1) Sample ID (Identifier of the sample being measured) : it is an automatically increased
progressive number associated with the single PRINT function ( print interval set to 0 ) for
the printing of labels. The index appears in the single sample printing together with date,
time, dissolved oxygen and temperature measured values. This menu item allows the value
of the first sample to be set: each time the PRINT key is pressed, the identification ID in the
printing is increased by 1 allowing progressive measurement of all measured samples. If the
Auto-Hold function, described below in this chapter, is enabled, the print time interval is
forced to zero. Pressing SERIAL only causes the print to occur when the measurement has
stabilized (HOLD symbol still). Later, it 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 UNT=RSET SER=PRNT" is scrolled in the comment line: using
the arrows (
and ) the currently measured sample identifier value can be changed.
By holding the °C/°F key down the proposed number is set to zero.
The instrument's heading information will be printed using the SERIAL key.
2) AUTO-HOLD function : the instrument normally operates in continuous view mode (de-
fault setting). In this mode the displayed measurement is updated every second. If the Auto-