Instruction Manual pH20 • pH21 Basic pH meters w w w . h a n n a i n s t .
Dear Customer, Thank you for choosing a Hanna Instruments Product. Please read this instruction manual carefully before using the instrument. This manual will provide you with all the necessary information for the correct use of the instrument, as well as a precise idea of its versatility in a wide range of applications. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com These instruments are in compliance with the directives.
FUNCTIONAL DESCRIPTION Note: These instruments use the following configuration. - + It is recommended to use the Hanna HI 710005 or HI 710006 voltage adapters (supplied with the meter) which are provided with the proper polarity configuration. The meters can also be powered with other adapters. In this case, remember to check the correct polarity of the adapter before connecting it to the meter. 1. 2. 3. 4.
OPERATIONAL GUIDE TAKING pH MEASUREMENTS • Make sure that the instrument has been calibrated for pH before taking measurements (see "pH Calibration" section for details). • Connect the supplied HI 1110B pH electrode to the BNC connector on the rear panel (see page 4). • If automatic temperature compensation is required, connect the HI 7662 temperature probe (optional) to the proper socket on the rear panel (see page 4). • Connect the 12VDC power adapter to the instrument (see page 4) and then to the mains.
• After measurements, turn the meter off by pressing the ON/OFF key, disconnect the power adapter from the mains and the electrode from the instrument. Note: To perform correct ORP measurements, the surface of the ORP electrode must be clean and smooth. Note: When not in use, the tip of the electrode should be kept moist and safe from any mechanical stress which might cause damage to the glass/platinum junction. TAKING TEMPERATURE MEASUREMENTS • The meter is factory calibrated for temperature range.
• Wait till the hourglass symbol on the LCD turns off and the "pH" tag stops blinking, then press CFM to confirm the second calibration point (slope). • The meter automatically returns to normal measurement mode. Note: To abort a calibration procedure and save previous calibration data, press the CAL key while the "pH" tag is still blinking. Recommendations for Users Before using these products, make sure that they are entirely suitable for the environment in which they are used.
CLEANING PROCEDURE General : Soak in HI 7061 General Cleaning Solution for about 30 minutes. Removal of films, dirt or deposits on the membrane/junction: Protein : Soak in HI 7073 Protein Cleaning Solution for 15 minutes. Inorganic : Soak in HI 7074 Inorganic Cleaning Solution for 15 minutes. Oil / grease : Soak in HI 7077 Oil & Fat Cleaning Solution for 1 minute.
HI 8072 HI 7082 HI 8082 1M KNO3 electrolyte, 4 x 30 mL (FDA approved bottle) 3.5M KCl electrolyte, 4 x 30 mL, for double junction electrodes 3.
SALES AND TECHNICAL SERVICE CONTACTS Australia: Tel. (03) 9769.0666 • Fax (03) 9769.0699 China: Tel. (10) 88570068 • Fax (10) 88570060 Egypt: Tel. & Fax (02) 2758.683 Germany: Tel. (07851) 9129-0 • Fax (07851) 9129-99 Greece: Tel. (210) 823.5192 • Fax (210) 884.0210 Indonesia: Tel. (21) 4584.2941 • Fax (21) 4584.2942 Japan: Tel. (03) 3258.9565 • Fax (03) 3258.9567 Korea: Tel. (02) 2278.5147 • Fax (02) 2264.1729 Malaysia: Tel. (603) 5638.9940 • Fax (603) 5638.9829 Singapore: Tel. 6296.
