User manual HANNA INSTRUMENTS HI 9932

[. . . ] Instruction Manual HI 9932 Autoranging Bench Microprocessor EC/TDS/NaCl/°C Meter Manufacturers since 1978 This Instrument is in Compliance with the CE Directives 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 the necessary information for a correct use of the instrument, as well as a precise idea of its versatility. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com. [. . . ] No Compensation (notc): The temperature value shown on the lower LCD is not taken into account. The " C" and "%TC" symbols blink when this option is active. To select the desired option press the ATC key until the option is briefly displayed on the LCD. If temperature compensation is active, measurements are compensated using a default temperature coefficient of 1. 90 %/ C. It is possible to select a different temperature coefficient (TC) in the 0. 00 to 6. 00 %/ C range. To change the TC factor enter the setup mode and select the "tc" item (see SETUP for details). The current temperature coefficient can be quickly viewed pressing ALT+TC. The value is briefly displayed on the lower LCD. 8 EC/TDS/M EC/TDS/M CALIBRATION Calibration is a 1-point procedure. Selectable calibration points are: 0. 0, 84. 0µS, 1413µS, 5. 00mS, 12. 88mS, 80. 0mS, 111. 8mS. Note: TDS reading is automatically derived from the EC reading and no specific calibration for TDS is needed. Rinse the probe with some of the calibration solution or deionized water. Tap the probe repeatedly to remove any air bubbles that may be trapped inside the sleeve. The "CON" indication starts blinking on the LCD asking for confirmation. If everything is satisfactory, the meter displays the "Stor Good" message and returns to measurement mode. Notes I If the uncalibrated reading is too far from the expected value, calibration is not recognized. The "CON" indication does not appear; the " " and "BUF" symbols blink to signal wrong or contaminated calibration solution. II For best results choose an EC buffer value close to the sample to be measured. 9 III IV V In order to minimize any EMC interference, use plastic beakers. If the setup item "tc" has been set to a different value, when exiting the calibration mode the value displayed on the upper LCD could be different from the nominal buffer value. It is possible to set the cell constant value directly without following the calibration procedure. To set the cell constant enter the setup mode and select "CEL" (see SETUP for details). N a C l CALIBRATION Calibration is 1-point at 100. 0% NaCl. Use the HI 7037 calibration solution (sea water solution) as a 100% NaCl standard solution. To enter NaCl calibration select the NaCl range and press the CAL key. [. . . ] Retrieve the GLP data and request the meter parameters and the current reading (of the current range only) from the PC directly. It is also possible to send a command from the PC to set the meter in a different range. The software is provided with an exhaustive on-line guide of all the commands available and allows data printing, plotting and exporting. PROBE MAINTENANCE Rinse the probe with clean water after measurements. If a more thorough cleaning is required, remove the probe sleeve and clean the probe with a cloth or a nonabrasive detergent. [. . . ]