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Error messages, Technical specifi cations, 0 technical specifi cations – Bluelab Combo Meter User Manual

Page 11: 0 error messages

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11

12.0 Technical specifi cations

pH

Conductivity

Temperature

Measurement

range

0.0 - 14.0 pH

0 - 9.9 EC

0 - 99 CF

0 - 4950 ppm 500

(TDS)

0 - 6930 ppm 700

0 - 50 °C

32 - 122 °F

Resolution

0.1 pH

0.1 EC

1 CF

10 ppm 500 (TDS)

10 ppm 700

1 °C

1 °F

Accuracy

(at 25 °C/

77 °F)

±0.1 pH

±0.1 EC

±1 CF

±50 ppm
±70 ppm

±1 °C

±2 °F

Calibration

Two point pH 7.0

and pH 4.0

or pH 10.0

Not required

(factory calibrated)

Not required

(factory calibrated)

Temperature

compensation

Not applicable

Automatic temperature

compensation

Not applicable

Operating

environment

0 - 50 °C / 32 - 122 °F

Power source

2 x AAA alkaline batteries

11.0 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 Combo
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