GHM Delta OHM HD3405.2, Руководство пользователя

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NOTE : when the Auto-Hold function is enabled, the pH/mV key allows the pH measurement to be
relaunched, and the measurement in mV is disabled. To restore the display in mV, disable the
Auto-Hold function in the menu.
SERIAL/EraseLOG key
In measurement mode, this function starts and stops the data transfer to the RS232C serial output.
According to the settings entered in the
Print and log interval menu item, a single sample can be
printed if Print and log interval =0 or a continuous indefinite printing of the measured data can be
set up if Print and log interval =1…3600.
The printing operation is accompanied by the display of the RS232 symbol and the blinking of the
battery symbol;
when using an external power supply the battery symbol does not appear .
Press SERIAL to end the continuous printing.
Before starting the printing with SERIAL, set the baud rate. To do so, select the
Baud Rate menu
item and select the maximum value equal to 38400 baud by using the arrows. Confirm by pressing
ENTER.
The DeltaLog9 software for PC will automatically set the baud rate value during connection.
If you
are using a different program than DeltaLog9, be sure the baud rate is the same for both the
instrument and the PC: the communication will only work in this way.
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Erase memory
When pressed after the MENU key, the SERIAL key permanently erases all the data contained in
the instrument's memory.
°C/°F Key
When the temperature probe is connected, the measured value is used to compensate the pH meas-
urement; the key changes the unit of measurement for the temperature from degrees Celsius to
Fahrenheit.
If the probe is not present, the compensation temperature must be entered manually: to manually
change the value shown in the display lower line, press °C/°F once. The temperature indicated
starts blinking. While the display is blinking, it is possible to change the compensation temperature
using the arrows (
and ). Confirm using ENTER. The display stops blinking, and that tempera-
ture is used for compensation.
If the temperature probe is not present, to change the unit of measurement between °C and °F, it is
necessary to press
twice the °C/°F key.