Bluelab pH Meter - Manual (Page 9)

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9
9.0 Error messages
An error message will only appear following pH calibration failure.
‘Err’ will be displayed for a few seconds then the display will show the previous
reading. Successful pH calibration indicators will disappear. The Bluelab pH Meter
is in an uncalibrated state, therefore recalibration is required. See causes of Error
messages below.
Possible causes for an ‘Err’ message:
• Calibration solutions contaminated
• Wrong solutions used
• pH probe contaminated
• pH probe not properly attached
• pH probe worn out or damaged
• Calibrate to pH 7.0 FIRST then to pH 4.0/10.0
10.0 Technical specifi cations
pH
Measurement range 0.0 - 14.0 pH
Resolution 0.1 pH
Accuracy at 25 °C/77 °F ±0.1 pH
Calibration Two point pH 7.0 and pH 4.0 or pH 10.0
Temperature compensation Not applicable
Operating environment
0 - 50 °C
32 - 122 °F
Power source 2 x AAA alkaline batteries