User manual HANNA INSTRUMENTS HI 993301

[. . . ] These instruments are in compliance with the directives. FUNCTIONAL DESCRIPTION SPECIFICATIONS HI 993301 EC/TDS Range 0 to 3999 µS/cm - 0 to 2000 ppm Resolution 1 µS/cm - 1 ppm Accuracy (@20ºC/68ºF) ±2% f. s. HI 993302 EC/TDS Range 0. 00 to 20. 00 mS/cm - 0. 00 to 10. 00 ppt Resolution 0. 01 mS/cm - 0. 01 ppt Accuracy (@20ºC/68ºF) ±2% f. s. Common specifications Temperature Range 0. 0 to 60ºC (32. 0 to 140ºF) Resolution 0. 1ºC or 0. 1ºF Accuracy (@20ºC/68ºF) ±0. 5 ºC or ±1ºF Typical EMC Deviation ±1 ºC or ±2 ºF Temp. Compensation =0. 0 to 2. 4%/ºC TDS Conversion factor 0. 45 to 1. 00 (CONV) Calibration Automatic at 1 point Power supply 12VDC power adapter (included) Environment 0 to 50ºC (32 to 122ºF); RH 95% non-condensing Dimensions (meter only) 160 x 105 x 31 mm (6. 2 x 4. 1 x 1. 2'') Weight (meter only) 190 g (6. 7 oz. ) PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully. [. . . ] You can simply install the meter above the sample to be tested for continuous measurement. The EC/TDS/Temperature probe has been molded with pipe thread (1/2'' NPT), which allows the user to attach it to an in-line system. Measurements are accurate and the meter can be calibrated at one point. You no longer need to worry about battery changes either: the unit runs without interruption on 12 VDC power supply. 1. 6. Liquid Crystal Display ON/OFF/MODE button Power supply connector 12 VDC power adapter EC/TDS/Temperature probe, pipe thread 1/2'' NPT SET/HOLD button Recommendations for Users Before using this product, make sure that it is entirely suitable for the environment in which it is used. Operation of this instrument in residential areas could cause unacceptable interferences to radio and TV equipment. 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. 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. Taking measurements Select either EC or TDS mode with the SET/HOLD button. 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. [. . . ] · 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. [. . . ]