Hanna Instruments HI 2212 Instruction Manual

Contents

Hanna Instruments HI 2212 Instruction Manual Manual pdf 20 page image

20All the instruments are factory calibrated for temperature.Hanna’s temperature probes are interchangeable and no temperaturecalibration is needed when they are replaced.If the temperature measurements are inaccurate, temperature recalibrationshould be performed.For an accurate recalibration, contact your dealer or the nearest HannaCustomer Service Center, or follow the instructions below.• Prepare a vessel containing ice and water and another one containinghot water (around 50 ºC). Place insulation material around thevessels to minimize temperature changes.• Use a calibrated thermometer with a resolution of 0.1 ºC as a referencethermometer.• With the instrument off, press and hold down the CFM & SETUPkeys, then power on the instrument. The “CAL” tag will appear andthe secondary LCD will show “0.0 ºC”.• Submerse the temperature probe in the vessel with ice and water asnear as possible to the reference thermometer. Allow a few seconds forthe probe to stabilize.• Use the ARROW keys to set the reading on the secondary LCD to thatof ice and water, measured by the reference thermometer. When thereading is stable and close to the selected calibration point, “READY”tag will appear and “CFM” tag will blink.• Press CFM to confirm. The secondary LCD will show “50.0 ºC”.• Submerse the temperature probe in the second vessel as near aspossible to the reference thermometer. Allow a few seconds for theprobe to stabilize.TEMPERATURE CALIBRATIONTEMPERATURE CALIBRATIONTEMPERATURE CALIBRATIONTEMPERATURE CALIBRATIONTEMPERATURE CALIBRATION((((( for technical personnel onlyfor technical personnel onlyfor technical personnel onlyfor technical personnel onlyfor technical personnel only)))))