BREWFERM COBRA Manuel page 13

•
LCD display " - - - "
Out of pH range, too
acidic/or too alkaline.
•
" H " or " L "
Out of temp. range, too
cold or too hot.
•
pH value fluctuate quickly
This is normal when the electrode is not
immersed in water, but exposed to air.
XII. SPECIFICATIONS
•
Operating Temp.: 0°~50°C (32~122°F)
•
Operating Humidity: 0~80% RH
•
pH calibration buffer suggested:
13
ATC
C
O
ATC
C
O