User manual HANNA INSTRUMENTS HI 2300

[. . . ] If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization number from the Technical Service department and then send it with shipping costs prepaid. When shipping any instrument, make sure it is properly packaged for complete protection. TABLE OF CONTENTS WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 PRELIMINARY EXAMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] TDS reading is obtained by multiplying the EC reading by the TDS factor, which has a default value of 0. 50. It is possible to change the TDS factor in the 0. 40 to 0. 80 range by entering setup mode and selecting the "tdS" item (see SETUP for details). When the use of an alternate function (SETUP, TC, GLP or CALT) is requested, press and hold the ALT key first, and then the second key. · · AUTORANGING The EC and TDS scales are autoranging. The meter automatically sets the scale with the highest possible resolution. By pressing LOCK, the autoranging feature is disabled and the current range is frozen on the LCD. Note: Autoranging is automatically restored if the range is changed, if the setup or calibration modes are entered, or if the meter is turned off and back on again. TEMPERATURE COMPENSATION Three options of compensating temperature are available: Automatic (Atc): The EC probe has a built-in temperature sensor; the temperature value is used to automatically compensate the EC/TDS reading (from ­9. 9 °C to 120. 0 °C), using the selected reference temperature. Manual (Mtc): The temperature value, shown on the secondary LCD, can be manually set with the ARROW keys. No Compensation (notc): The temperature value shown on the secondary LCD is not taken into account. The reading displayed on the primary LCD is the actual EC or TDS value. Note: The default compensation mode is ATC. 8 To select the desired option press ATC until the option is displayed on the LCD. If temperature compensation is active, measurements are ATC compensated using the temperature coefficient (default value 1. 90 %/°C). To change the temperature coefficient, enter the setup mode and select the "tc" item (See SETUP for details, page 14). The current temperature coefficient can be quickly viewed by pressing ALT+TC keys. The value is briefly displayed on the secondary LCD. ALT TC · If the temperature reading is out of ­9. 9 °C - 120. 0 °C interval and Atc or Mtc option is selected, the temperature limit range value will be displayed, together with the "°C" tag blinking and the instrument will do no temperature compensation. EC/TDS CALIBRATION EC calibration is a one-point procedure. Selectable calibration points are: 0. 00 µS, 84. 0 µS, 1413 µS, 5. 00 mS, 12. 88 mS, 80. 0 mS, 111. 8 mS. To enter EC calibration, select the EC range and press CAL. CAL Note: TDS reading is automatically derived from the EC reading and no specific calibration for TDS is needed. Tap the probe repeatedly to remove any air bubbles that may be trapped inside the sleeve. The secondary LCD displays "100". CAL NaCl % BUF When the reading is stable, "CFM" tag starts blinking on the LCD, asking for confirmation. Press CFM to confirm calibration. CAL NaCl CFM BUF % CFM The instrument displays the "Stor Good" message and returns to measurement mode. Notes: · If the uncalibrated reading is too far from the expected value, calibration is not recognized. The "CFM" tag does not appear; the "~" and "BUF" tags blink to signal wrong or contaminated calibration solution. If the setup item "tc" has been set to a different value, when exiting calibration mode, the displayed value on the upper LCD might be different from the nominal buffer value. · 11 TEMPERATURE CALIBRATION (for technical personnel only) The calibration is a 2-point procedure at 0. 0 and 50. 0 ºC. [. . . ] HI 710005 12VDC voltage adapter (US plug) HI 710006 12VDC voltage adapter (European plug) HI 920010 9 to 9-pin connection cable HI 92000 Windows® compatible software 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, requiring the operator to follow all necessary steps to correct interferences. The metal bonds of the probe are sensitive to electrostatic discharges. To maintain the EMC performance of this equipment, the recommended cables must be used. [. . . ]