Automatic Buffer Recognition; Sample Measurements; Data Transfer - Mettler Toledo SevenGo Duo pro pH/ORP/Ion/Conductivity meter SG78 Mode D'emploi

Operating the pH/ORP/Ion/Conductivity meter SG78
g) Press Save to keep the calibration.
h) Press EXIT to reject the calibration.
Note
Up to 5 calibrations can be saved for a dedicated sensor ID. The oldest calibration data is automatically
over writ ten with the current calibration data.

4.9 Automatic buffer recognition

The meter features automatic pH buffer recognition for the predefined buffer groups (see "Appendix"). The
buffers within a buffer group are automatically recognized by the meter and displayed during calibration.
This feature allows the calibration in any order within a predefined pH buffer group.
There is no automatic pH buffer recognition for customized buffer groups; in this case, the defined order
of the buffers needs to be followed.

4.10 Sample measurements

Place the sensor in the sample and press READ to start a measurement.
Note
●
If the "automatic endpoint" format is selected, the measurement stops automatically as soon as the
Sta bil i ty icon appears.
●
If the "manual endpoint" format is selected, press READ to manually stop the measurement.
●
If the "timed endpoint" format is selected, the measurement stops after the preset time.

4.11 Data transfer

It is possible to transfer either all data or a user-defined set of data from the memory to a METTLER TOLE-
DO printer (for example, RS-P26) or to a PC using this meter. The data is transferred with the IR interface
on the left side of the meter.
Install the driver software (the latest drivers can be downloaded from www.mt.com/pHLab).
The following section describes how to proceed with the different configurations.
Data transfer from SevenGo Duo pro™ to an RS-P26 printer is done using an IR-RS232 adapter.
a) Connect the RS232 plug to the corresponding interface on the backside of the printer.
b) Point the instrument's IR window toward the IR receiver on the other end of the adapter cable.
c) Start transfer in the data menu.
Adjust the settings for data transfer as follows:
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Baud rate: 1200
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Data bits: 8
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Parity: none
●
Stop bits: 1
Data transfer from SevenGo Duo pro™ to a PC can be accomplished three different ways:
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Directly with an IrDA interface on the PC
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Alternatively, the meter ends the calibration automatically when 5 calibrations are performed. The
offset value and slope are shown on the display.
The display shows the readings of the sample in either the single channel or dual channel mode.
Note: to switch between the single and dual channel measurement screen, press and hold
MODE for 3 seconds.
The endpoint format blinks, indicating a measurement is in progress.
As soon as the measurement is stable according to the selected stability criterion, the Stability
icon appears.
pH/ORP/Ion/Conductivity meter SG78