Lovibond SD 300 pH, Instruction Manual

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SD 300_pH_1 01/2013
11.2 Calibration data memory (rEAd CAL)
The last 16 calibrations with date and results are stored in the instrument and can be retrieved.
Display the calibration data memory:
Saved calibration data can be read in the GSOFT3050 software and can be observed in the
instrument display itself:
Press and hold for two seconds:
The following appears in the display: or (configuration level)
Press until the following appears: read cal. = "Read calibration
data"
Press briefly: Switch between
- U.Asy = Asymmetry voltage in mV
- SL. 1 = slope acid in mV/pH *1)
- SL. 2 = slope alkaline in mV/pH *1)
- Date+time display of the data set
In parallel, the bar display shows the electrode evaluation of the
corresponding calibration
or Switch between the calibration data sets
Close the display of the calibration data sets
*1) 1-point calibration: slope acid = slope alkaline = 59.16 mV/pH is assumed
2-point calibration: slope acid = slope alkaline = determined slope
3-point calibration: slope acid and slope alkaline are determined separately
12. Alarm ("AL.")
There are three possible settings:
Off (AL.oFF), On with sound (Al.on), On without sound (AL.no.So).
In the following cases an alarm is issued when the alarm function is active (on or no.So.):
- Lower alarm threshold (AL. Lo) undercut
- Upper alarm threshold (AL. Hi) exceeded.
- Sensor error
- Low battery (bAt)
- Err.7: System error (is always signalled with sound)
In the event of an alarm, the "PRIO" flag is marked in the instrument response with interface
accesses.
13. Real time clock ("CLOC")
The real time clock is required for the chronological assignment of the logger data and the
calibration time point. Therefore, check the settings as necessary.