User manual HANNA INSTRUMENTS HI 993301

[. . . ] Any defective item must be returned in its original packing. www. hannainst. com These Instruments are in Compliance with CE Directives WARRANTY HI 993301 and HI 993302 are warranted for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. The probe is warranted for a period of six months. This warranty is limited to repair or replacement free of charge. Damages due to accident, misuse, tampering or lack of prescribed maintenance are not covered. [. . . ] Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC performance. To avoid electrical shock, do not use this instrument when voltages at the measurement surface exceed 24 VAC or 60 VDC. To avoid damages or burns, do not perform any measurement in microwave ovens. ISTR993301 10/01 OPERATIONAL GUIDE To turn the meter on Connect the 12VDC adapter to the meter and to the mains; the display will lit. Press and hold the MODE button for 23 seconds. All the used segments on the LCD will be visible for a few seconds. To change the temperature unit To change the temperature unit (from °C to °F), from measurement mode, press and hold the MODE button until TEMP and the current temperature unit are displayed on the lower LCD. Use the SET/HOLD button to change the temperature unit, and then press MODE button twice to return to normal measurement mode. To freeze the display Press and hold the SET/HOLD button for 2-3 seconds until HOLD appears on the secondary display. Press either button to return to normal mode. Taking measurements Select either EC or TDS mode with the SET/HOLD button. Immerse the probe in the solution to be tested. In order to ensure better accuracy, probe should not touch or stand close to the walls or bottom of the sample vessel. The EC or TDS value automatically compensated for temperature is shown on the primary LCD while the secondary LCD shows the temperature of the sample. The measurements should be taken when the stability symbol on the top left of the LCD disappears. To change the EC/TDS conversion factor (CONV) and the temperature compensation coefficient (BETA) · From measurement mode, press and hold the MODE button until TEMP and the current temperature unit are displayed on the lower LCD. TEMP °C. · Press the MODE button again to show the current conversion factor. · Press the SET/HOLD button to change the conversion factor. · Press the MODE button to show the current temperature compensation coefficient . [. . . ] · Release the button and immerse the probe in the proper calibration solution: HI 70031 (1413 µS/cm) for HI 993301 and HI 70030 (12. 88 mS/cm) for HI 993302. · Once the calibration has been automatically performed, the LCD will display OK for 1 second and the meter will return to normal measurement mode. · Since there is a known relationship between EC and TDS readings, it is not necessary to calibrate the meter in TDS Note: for storing calibration data in the non-volatile memory, turn the meter OFF and then ON again through the MODE button. The CAL symbol on the LCD means that the meter is calibrated. HI HI HI HI HI HI HI HI HI HI HI HI 70030P 70031P 70032P 70038P 70442P 7061M 70300M 710005 710006 710012 710013 710014 ACCESSORIES 12. 88 mS/cm @25ºC cal. [. . . ]