HI 98311 • HI 98312 - Hanna Instruments Australia
Contents
1. information for a correct operation Please read it carefully before using the meter If you need additional technical information do not hesitate to e mail us at tech hannainst com These instruments are in compliance with the LE directives PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully If any damage has occurred during shipment immediately notify your Dealer or the nearest Hanna Customer Service Center Each meter is supplied with e HI 73311 EC TDS probe e HI 73128 probe removal tool e batteries 4 x 1 5V and instructions Note Conserve all packing material until the instru ment has been observed to function correctly Any defective item must be returned in its original packing US DESIGN PATENT D462 024 GENERAL DESCRIPTION HI 98311 and HI 98312 are waterproof EC TDS and temperature meters The housing has been completely sealed against humidity and designed to float All EC TDS readings are automatically temperature compensated ATC and temperature values can be displayed in C or F units The EC TDS conversion factor CONV is selectable by the user as well as the temperature compensation coefficient B BETA The meters can be calibrated at one point Measurements are highly accurate with a unique stability indicator right on the LCD A low battery symbol warns the user when the batter ies are to be replaced In addition the Battery Error2. Instruction Manual HI 98311 HI 98312 Waterproof EC TDS Temperature Testers EFNUM www hannainst com WARRANTY HI 98311 and HI 98312 are warranted for one year 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 If service is required contact the dealer from whom you purchased the instrument If under warranty report the model number date of purchase serial number and the nature of the failure If the repair is not covered by the warranty you will be notified of the charges incurred If the instrument is to be re turned to Hanna Instruments first obtain a Returned Goods Authorization Number from the Customer Service department and then send it with shipment costs prepaid When shipping any instrument make sure it is properly packaged for complete protection All rights are reserved Reproduction in whole or in part is prohibited without the written consent of the copyright owner Hanna Instruments Hanna Instruments reserves the right to modify the design con struction and appearance of its products without advance notice Dear Customer Thank you for choosing a Hanna product This manual will provide you with the necessary
3. Prevention System BEPS avoids erroneous reading caused by low voltage level by turning the meter off The HI 73311 EC TDS probe supplied with the meter is interchangeable and can be easily replaced by the user The stainless steel encapsulated temperature sensor facilitates faster and more accurate temperature mea surement and compensation FUNCTIONAL DESCRIPTION SPECIFICATIONS NOUR WN oue quon SET HOLD Oo 2 N Q 5 g 9 n a E in Cc FEL Battery compartment Range 0 0 to 60 0 C 32 0 to 140 0 F 0 to 3999 uS cm HI 98311 0 00 to 20 00 mS cm HI 98312 0 to 2000 ppm HI 98311 0 00 to 10 00 ppt HI 98312 Resolution 0 1 C 0 1 F 1 uS cm 1 ppm HI 98311 0 01 mS cm 0 01 ppt HI 98312 Accuracy 0 5 C 1 F 20 C 68 F 2 f s EC TDS Typical EMC 0 5 C 15F Deviation 2 f s EC TDS Temperature Automatic with B 0 0 to 2 4 C Compensation Environment O to 50 C 32 to 122 F RH 100 Liquid Crystal Display LCD ON OFF MODE button HI 73311 EC TDS probe Temperature sensor SET HOLD button Automatic temperature compensation indicator Stability indicator Battery life percentage indicator Low battery indicator Secondary display Primary display Measuring units for primary display TDS Fa
4. ctor 0 45 to 1 00 CONV Calibration Automatic 1 point Cal Solutions HI 98311 HI7031 1413 uS cm HI7032 1382 ppm CONV 0 5 HI70442 1500 ppm CONV 0 7 HI 98312 HI7030 12 88 mS cm HI70038 6 44 ppt CONV 0 5 or 9 02 ppt CONV 0 7 Probe included HI 73311 EC TDS probe Battery Type Life 4x 1 5V with BEPS approx 100 hours Auto off After 8 minutes of non use Dimensions 163 x 40 x 26 mm 6 4 x 1 6 x 1 0 Weight 100 g 3 5 oz Recommendations for Users Before using this product make sure that it is entirely suit able for the environment in which it is used Operation of this instrument in residential areas could cause unaccept able interferences to radio and TV equipment Avoid touching the probes at all times Any variation introduced by the user to the supplied equip ment may degrade the instrument s EMC performance To avoid electrical shock do not use this instrument when volt ages at the measurement surface exceed 24 Vac or 60 Vdc To avoid damages or burns do not perform any measure ment in microwave ovens IST98311R3 07 05 OPERATIONAL GUIDE CALIBRATION PROBE MAINTENANCE BATTERY REPLACEMENT To turn the meter on and to check battery status Press and hold the MODE button for 2 3 sec onds All the used segments on the LCD will be visible for a few seconds followed by a percent indication of the remaining battery life E g 100 BATT Taking measurements Submerge the probe in the solution to be te
5. ibration of the instru ment is recommended In addition the instrument must be recalibrated whenever a The EC TDS probe is replaced b After testing aggressive chemicals dg Where high accuracy is required d At least once a month To change the EC TDS coversion factor CONV and the temperature compensa tion coefficient B BETA e From measurement mode press and hold the amp MODE button until TEMP and the current tempera ture unit are displayed on the lower LCD E g TEMP C e Press the MODE button again to show the current conversion factor E g 0 50 CONV e Press the SET HOLD button to change the conver sion factor e Press the MODE button to show the current temperature compensation coefficient B E g 2 1 BETA e Press the SET HOLD button to change the the temperature compensation coefficient B e Press the MODE button to return to the normal measuring mode Calibration procedure e From measurement mode press and hold the amp MODE button until CAL is displayed on the lower LCD e Release the button and immerse the probe in the proper calibration solution HI 7031 1413 uS cm for HI 98311 and HI 7030 12 88 mS cm for HI 98312 Once the calibration has been automatically per formed the LCD will display OK for 1 second and the meter will return to normal measurement mode e Since there is a known relathionship between EC and TDS readings it is not necessary to calibra
6. sted Use plastic beakers to minimize any electromagnetic inter ferences Select either EC or TDS mode with the SET HOLD button The measurements should be taken when the stability symbol D on the top left of the LCD disappears The EC or TDS value automati cally compensated for temperature is shown on the primary LCD il while the secondary LCD shows the temperature of the sample ATC ppm 100M To change the temperature unit To change the temperature unit from C to F from measurement mode press and hold the O MODE button until TEMP and the current temperature unit are displayed on the lower portion of the LCD E g TEMP C Use the SET HOLD button to change the temperature unit and then press the MODE button twice to return to the normal measuring mode To freeze the display Press the SET HOLD button for are ppm 2 3 seconds until HOLD appears on the secondary display Press either button to return to the normal measuring mode To turn the meter off Press the MODE button while in normal measur ing mode OFF will appear on the lower part of the display Release the button Notes e Before taking any measurement make sure the meter has been calibrated e If measurements are taken in different samples successively rinse the probe thoroughly to eliminate cross contamination and after cleaning rinse the probe with some of the sample to be measured For better accuracy frequent cal
7. te the meter in TDS If the EC TDS conversion factor is either 0 5 or 0 7 the meter will allow a direct calibration in ppm by using the Hanna calibration solutions listed below The CAL symbol on the LCD means that the meter is calibrated To reset to the default calibration To clear a previous calibration press the MODE button after entering the calibration mode The lower LCD will display ESC for 1 second and the meter will return to normal measurement mode The CAL symbol on the LCD will disappear The meter will be reset to the default calibration The EC TDS probe can be easily replaced by using the supplied tool HI 73128 Insert the tool into the probe cavity as shown below Rotate the probe counterclockwise Pull the probe out by using the other side of the tool Insert a new probe following the above instructions in reverse order gt JC The meter displays the remaining battery percentage every time it is switched on When the battery level is below 5 the symbol on the bottom left of the LCD lights up to indicate a low battery condition The batter ies should be replaced soon If the battery level is low enough to cause erroneous readings the meter shows 0 and the Battery Error Prevention System BEPS will automatically turn the meter off To change the batteries remove the 4 screws located on the top of the meter Once the top has been removed carefully replace the 4 bat
8. teries located in the compartment while paying atten tion to their polarity LCD side Replace the top making sure that the gasket is properly seated in place and tighten the screws to ensure a watertight seal HI 73311 Replaceable EC TDS probe HI 73128 Probe removal tool HI 70030P 12 88 mS cm solution 20 mL sa chet 25 pcs HI 70031P 1413 uS cm solution 20 mL sa chet 25 pcs HI 70032P 1382 ppm solution 20 mL sachet 25 pcs HI 70038P 6 44 ppt solution 20 mL sachet 25 pcs HI 70442P 1500 ppm solution 20 mL sachet 25 pcs
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