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SD_300_pH_1 01/2013
3. Product description
3.1 Delivery Contents
Included as standard:
- SD 300 pH sensor with 2 AAA-batteries
- Operating manual
- Additionally as a set in a case:
Standard buffer solutions 90 ml each
Measurement cell(s) pH/ temperature
3.2 Operating and maintenance notices
1. Battery operation:
If "bAt" is shown in the lower display, the batteries are depleted and must be replaced. How-
ever, the instrument will still function for a short time. If "bAt" is shown in the upper display,
the battery voltage is no longer sufficient for operation of the instrument and the battery
is now fully depleted. For battery replacement, see the chapter "14. Battery replacement".
When storing the instrument in environmental temperatures above 50 °C, the
battery must be removed. If the instrument is not used for an extended period,
the battery should be removed. However, the time must be reset after when the
instrument is turned back on.
2. The instrument and sensors/electrodes must be handled with care and used in accordance
with the technical data (do not throw, strike, etc.). Plugs and sockets must be
protected from dirt.
3. USB:
Make sure to only connect the USB interface cable to permissible components.
Operation with the USB 300 interface cable is recommended. If this configura-
tion option is being used, the instrument is powered from the USB interface of
the connected PC Or USB mains adapter.
4. Display values with cable break or no connected pH or redox electrode: If no electrode
is connected or the connecting cable is defective, the mV or pH values are still shown.
However, these are not valid measurement results!
4. Operating instructions
4.1 Display elements
1. Main display:
pH value,
Redox value (mV, mVH),
rH value
2. Secondary display:
Temperature measure-
ment value
3. Display arrows for
measurement value
units
4. Evaluation of the electrode or battery status
5. Display elements for representation of the min-
imum/maximum/saved measurement value
i
rH
atc stab cal logg
pH
mV
pH
mV
H
4
3
1
5
2
MAX
°C
°C
°F
HLD
DIF MIN
6
7
8
9
Summary of Contents for SD 300 pH
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