Thermo Fisher Scientific EcoScan pH/Ion 5 & 6 - Manual (Page 18)

Instruction Manual pH 5/6 & Ion 5/6
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3.5 Temperature Calibration
3.5.1 With Temperature probe
The temperature probe (EC-PH5-TEM01P/ 35613-05) provided with the meter is
factory-calibrated. Over time, temperature calibration may drift and require calibration. If
there is a need to replace with the new probe you should calibrate the temperature
probe prior to pH calibration.
1. Connect your temperature probe to the meter. Press MODE key to enter the
Temperature mode until “ o C” annunciator appears in the LCD.
2. Compare the displayed value to a NIST certified thermometer or other thermometer
known to be accurate. For best accuracy, place both the probe and thermometer in
a constant temperature bath.
3. Press CAL key to enter temperature calibration mode. The LCD shows “CA”
momentarily and displayed reading flashes.
4. Press and keys (for Ion 6) or INC key (for pH 5/6) until the LCD display shows
the desired temperature. The meter allows an adjustable maximum value of ± 5 o C
from factory default.
5. To cancel or abort this operation, press CAL key. Note no new value will be stored
into its meter‘s non-volatile memory. To confirm calibration, press ENTER key. The
LCD displays “CO” momentarily, and the meter reverts to measurement mode.