Thermo orion 135A, Инструкция по эксплуатации

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Setting
parameters of
the data log
Note
STO
Note
Models 135A and 136S Portable Conductivity Meters
Operation 19
In the parameter setting mode, you select whether data
storage is to be interval, event-controlled or manual.
Press the
STO
key to access the logging functions.
To select interval-controlled storage of measured values,
press the
STO
key and set the interval using the
Y
and
B
keys. The interval range is between 5 seconds and 60
minutes. Default time (factory-set) is 2 minutes. After se-
lecting the interval time, press the
STO
key to enter the
value.
With event-controlled data storage, a measured value is
not stored until it deviates from the last logged value by the
preset differential value. By using the storage time, you
can determine when the value had changed. The differen-
tial value is entered in the subsequent parameter-setting
step.
The differential value is always based on the currently set
measured variable (conductivtiy, salinity or TDS). This
means that if differential conductivity values are to be
logged, the meter must be set to conductivity measure-
ment prior to parameter setting and data logging.
With manual data logging, the measured values are saved
with the
STO
key.
After selecting the above parameters, select “Continue” or
“Start” using the
Y
and
B
keys and then press the
STO
key to commence logging.
The datalogger is a ring memory, i.e. it does not stop after
reaching the last memory location (99). Recording is auto-
matically continued with memory location number 00. To
avoid losing data by overwriting, download stored data and
clear the logger before beginning a new set of data. Be
aware of this when using interval-controlled data collection.