Fisherbrand accumet AB315, Руководство пользователя

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accumet AB315 pH/mV Meter 25
Chapter 5
Measurements
5.1 Read Types
The Read Type selected in the meter Setup Menu will
determine how measurements are performed and when
measurements are saved to the data log and exported to
an external device. Set the Read Type as Continuous,
Auto-Read or Timed to define.
5.1.1 Continuous
In the Continuous measure mode, measurements are
continuously updated on the display and the stopwatch
(stabilizing) or checkmark (stable) icon indicates the
measurement stability status.
Press the “Log/Export” key to save a measurement to the
data log and export.
At any time during the measurement, press the “Hold” key
to lock the measurement on the display (Hold icon will be
shown on the display) and then press the Hold key a
second time to release the hold and view live
measurements again.
5.1.2 Auto-Read
In the Auto-Read measure mode, press the “Read” key to
start a measurement.
When the measurement is stable, the checkmark (stable)
icon is shown and the measurement is locked on the
display until the “Read” key is pressed again.
The stable measurement is automatically saved to the data
log and exported.
5.1.3 Timed
In the Timed measure mode, the measurement values are
continuously updated on the display.
Measurements are automatically saved to the data log and
exported at the selected time intervals, from 5 seconds to
60 minutes, the entire time the meter is in the
measurement mode.
5.2 pH and ORP
Measurements
Rinse the electrode with distilled water or
appropriate solution and blot gently with a lint-free
tissue to remove excess water.
Place the electrode into the sample, submerging
the measurement sensor and reference junction.
Allow time for the reading to stabilize.
The meter displays the stopwatch icon while
the reading is stabilizing.
The meter displays the checkmark icon when
the reading is stable.
Note the displayed measurements as required.
Remove the electrode from the sample.
Repeat steps 1-5 for all samples.
When all samples have been measured, store the
electrode per instructions in the electrode manual.
5.3 pH Electrode Icon
The pH Electrode Icon indicates the condition of the pH
electrode based on the last saved calibration data and
resulting slope value.
Electrode Good: pH calibration slope is 92.0% to 102.0%
Electrode Warning: pH calibration slope is 82.0% to 91.9%
or 102.1% to 114.0%, recommended actions include:
•
Check that all pH buffers are fresh, uncontaminated
and not expired
•
Clean and condition the pH electrode
Electrode Error: pH calibration slope is less than 82.0% or
higher than 114.0%, recommended actions include:
• Replace all pH buffers
•
Replace pH electrode
Refer to the Troubleshooting section for more
recommended actions.