Maintenance; Error Message; Meter Maintenance - OHAUS ST400 Manual De Instrucciones

EN-18
Go to Ohaus website, Support→Software and Drivers.

Start the program; click 'Connection' in the 'Settings' directory and select USB,
then click 'OK'. Then type in the instrument model and serial number in the lower
left corner and click 'Read' to read the data in the meter.

Click 'Export' to export the stored test results to an Excel sheet.
4

MAINTENANCE

4.1

Error message

Error 0 Memory access error
Error 2 Measured values out of range
Error 3 Measured buffer temperature
out of range (<5 or >40 ° C)
Error 4 Offset out of range
offset > 60mV or < - 60 mV
Error 5 Slope out of range
Error 6 Meter cannot recognize the
buffer
Error 9 The current data set has
already been stored once
4.2

Meter maintenance

Do not disassemble the meter!
The ST400 series instruments do not require any maintenance other than replacement of
depleted batteries. To clean, use a damp cloth.
Attention: Do not use solvents or harsh chemicals to clean the instrument.
The housing material is susceptible to damage by some organic solvents, such as toluene, xylene
and methyl ethyl ketone (MEK). Any spillage should be immediately wiped off.
CAUTION: Battery is to be replaced only by an authorized Ohaus service dealer.
Risk of explosion can occur if the rechargeable battery is replaced with the wrong
type or if it is not properly connected. Dispose of the lithium-ion battery according
to local laws and regulations.
ST400 & ST400M Portable Meter
Reset to factory settings
Check if the electrode is properly connected and
placed in the sample solution.
Keep the pH buffer temperature within the range
for calibration
Make sure the pH buffer is correct and fresh;
Clean or replace the pH electrode.
Make sure the buffer is correct and fresh; Clean
or replace the pH electrode.
Make sure the buffer is correct and fresh; check if
the buffer has not been used more than once.
An endpoint reading can only be stored once.
Perform a new measurement to store.