Delta OHM HD2305, User Manual

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2. DESCRIPTION OF THE FUNCTIONS
The keyboard of the pH meter Model HD2305.0 is composed of double-function keys. The function
on the key is the "main function", while the one above the key is the "secondary function".
When the instrument is in standard measurement mode, the main function is active.
Once the Settings Menu has been opened, by pressing simultaneously the
DATA+°C/°F keys, the
secondary function is enabled.
The pressing of a key is accompanied by a short confirmation "beep": a longer "beep" sounds if the
wrong key is pressed. Each key specific function is described in detail below.
This key has two functions:
•
ON/OFF: to turn the instrument on press ON , to turn it off press OFF .
The turning on enables all display segments for a few seconds, starts an Auto-test including the
detection of the probe connected to the input, and sets the instrument ready for normal
measurement. The following is displayed:
MIN
cm
min
s
2
3
m
µ
m
k
>>>
•
AUTO/OFF: the AutoPowerOff function can be disabled by simultaneously pressing this key
and the "°C/°F-MENU" key when turning the instrument on.
During turning on, should no probes be connected, the "NO_PRBE_SER_NUM" message is
displayed in the line for symbols for a few seconds, while the "ERR" message is shown in the
central part of the display, and the last manually-set temperature appears in the secondary line.
The unit of measurement symbol (°C or °F) starts blinking, and a letter "m" meaning "manual"
appears next to the battery symbol.
When the probe fitted with SICRAM module is inserted into a functioning instrument, the
"NEW_PROB_DET" (New probe detected) message appears, while the "ERR" message is
shown in the central part of the display, and a sequence of "beeps" is simultaneously issued. As the
data are captured upon turning the instrument on, it is necessary to turn it off and on again.
Caution! Replace the probes when the instrument is off.
ON-OFF and AUTO-OFF key