Instruction Manual HI 2300 EC/TDS/NaCl Bench Meter w w w. h a n n a i n s t .
Dear Customer, Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using this instrument. This manual will provide you with the necessary information for correct use of this 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 or view our worldwide contact list at www.hannainst.com.
PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipping. If there is any damage, notify your Dealer or the nearest Hanna Customer Service Center. Each instrument is supplied with: • HI 76310 Conductivity / TDS probe • 12VDC Power Adapter • Instruction Manual Note: Save all packing material until you are sure that the instrument functions correctly.
FUNCTIONAL DESCRIPTION Front Panel Rear Panel 1) Liquid Crystal Display (LCD). 2) CAL key, to enter and exit calibration mode. RCL key (alternate function), to enter and exit memory recall. 3) CFM/GLP key, to confirm calibration selection, different setup values or to display Good Laboratory Practice information. 4) ºC key, to manually increase temperature value or other parameters. TC key (alternate function), to view temperature coefficient value.
SPECIFICATIONS 0.00 to 29.99 µS/cm 30.0 to 299.9 µS/cm 300. to 2999. µS/cm 3.00 to 29.99 mS/cm 30.0 to 200.0 mS/cm up to 500.0 mS/cm actual(*) conductivity RANGE 0.00 to 14.99 ppm 15.0 to 149.9 ppm 150. to 1499. ppm 1.50 to 14.99 g/l 15.0 to 100.0 g/l up to 400.0 g/l actual(*) TD S (with 0.80 factor) 0.0 to 400.0% NaCl –20.0 to 120.0 ºC 0.01 µS/cm 00.1 µS/cm 0.01 µS/cm 0.01 mS/cm 00.1 mS/cm 0.01 ppm 0.1 ppm 1 ppm 0.01 g/l 0.1 g/l RE SOLUTION 0.1% NaCl 0.1 ºC ±1% of reading (±0.
E C Calibration 1 point slope calibration; 6 buffers available: 84.0, 1413 µS/cm 5.00, 12.88, 80.0, 111.8 mS/cm 1 point offset: 0.00 µS/cm NaCl Calibration 1 point with HI 7037L buffer (optional) Temperature compensation Manual or Automatic from: –20.0 to 120.0 ºC (can be disabled to measure actual conductivity) Conductivity temperature coefficient 0.00 to 6.00% / ºC (for E C and TD S only) default value is 1.90% / ºC TD S factor 0.40 to 0.80 (default value is 0.
OPERATIONAL GUIDE POWER CONNECTION Plug the 12 VDC adapter into the power supply socket. Notes: • This instrument uses non volatile memory to retain the calibration parameters and all other settings, even when unplugged. • Make sure a fuse protects the main line. PROBE CONNECTION For EC/TDS or temperature measurements connect the probe to the 7-pin connector. Make sure the probe sleeve is properly inserted. INSTRUMENT START-UP • Turn the instrument on by pressing the ON/OFF switch located on the rear panel.
The conductivity reading is affected by temperature. Three options for temperature compensation are available in conductivity measurement mode. Note: The compensation is referenced at the selected reference temperature (see SETUP for details, page 21). To select the desired option, press the ALT&ATC keys until the option is displayed on the LCD. Automatic (Atc): The conductivity probe has a built-in temperature sensor; the temperature value is used to automatically compensate the EC/TDS reading.
• If the reading is out of range, the full-scale value (100.0 for Mtc/Atc mode or 400.0 for uncompensated TDS) will be displayed blinking. • If LOCK was pressed to freeze the LCD range and the reading goes out of range, the full-scale value of the frozen range will be displayed blinking. NaCl MEASUREMENTS Press the RANGE keys while in EC range until NaCl is displayed on the LCD. The instrument will display the NaCl reading on the primary LCD and the temperature reading on the secondary LCD line.
EC/TDS CALIBRATION Selectable calibration points for conductivity are 0.00 µS for offset and 84.0 µS, 1413 µS, 5.00 mS, 12.88 mS, 80.0 mS, 111.8 mS for slope. Rinse the probe with calibration solution or deionized water. Submerse the probe into the solution. The sleeve holes must be completely submersed. Tap the probe repeatedly to remove any air bubbles that may be trapped inside the sleeve. To enter EC calibration, select the EC range and press CAL. The “BUF” and “CAL” tags are displayed.
Notes: • If the reading is too far from the expected value, the “WRONG” and “ ” tags will blink. Calibration can not be confirmed. In this case check if the calibration solution has been used correctly or clean the probe by following the Probe Maintenance (see page 31). • If the meter is in Atc or Mtc mode and the temperature is out of the 0.0 to 60.0 ºC interval, “WRONG”, “ºC” tags and the temperature will blink. • For best results choose an EC standard value close to the sample to be measured.
CONDUCTIVITY VERSUS TEMPERATURE CHART The conductivity of an aqueous solution is a measure of its ability to carry an electrical current by means of ionic motion. The conductivity invariably increases with increasing temperature. It is affected by the type and number of ions in the solutions and by the viscosity of the solution itself. Both parameters are temperature dependent.
NaCl CALIBRATION NaCl calibration is a one-point calibration at 100.0% NaCl. Use the HI 7037L calibration solution (sea water solution) as a 100% NaCl calibration solution. Rinse the probe with some of the calibration solution or deionized water. Submerse the probe into HI 7037L solution. The sleeve holes must be completely submersed. Tap the probe repeatedly to remove any air bubbles that may be trapped inside the sleeve. To enter NaCl calibration select the NaCl range and press CAL.
GOOD LABORATORY PRACTICE (GLP) GLP is a set of functions that allows storage and retrieval of data regarding the maintenance and status of the system. All data regarding EC and NaCl calibration is stored for the user to review when necessary. EC CALIBRATION DATA EC calibration data is stored automatically after a successful calibration. To view the EC calibration data, press GLP when the instrument is in EC measurement mode. The instrument will display the time (hh:mm) of the last calibration.
• The temperature coefficient. • The instrument ID. NaCl CALIBRATION DATA NaCl calibration data is stored automatically after a successful calibration. To view the NaCl calibration data, press GLP when the instrument is in NaCl measurement mode. The instrument will display the time (hh:mm) of the last calibration. Use the ARROW key to scroll through the calibration data. • The date (mm.dd.yyyy). • The salinity coefficient. • The cell constant. • The instrument ID.
Notes: • If no temperature compensation is selected during calibration, the temperature coefficient is not displayed in GLP. • Press GLP at any moment and the instrument will return to measurement mode. • If calibration has not been performed on the selected range, the instrument displays “no CAL” message blinking. LOGGING FUNCTION Up to 500 logged samples can be stored into memory. LOGGING THE CURRENT DATA To store the current reading into memory press LOG while the instrument is in measurement mode.
If the log space is full (500 records), “FULL LOG” message will be displayed and no more data will be saved. When LOG is pressed, a complete set of information is stored: date, time, EC, TDS, NaCl, temperature and calibration data. VIEW LOGGED DATA Press the ALT&RCL keys while in measurement mode to retrieve the stored information.
In TDS measurement range: In NaCl measurement range: Use the ARROW keys, to scroll through the records. Note: The instrument will automatically skip log records from other measurement ranges. For EC Range • The conductivity value on the primary LCD and the temperature value on the secondary LCD. To view additional information press RANGE. • The time on the primary LCD, along with “TIME” tag and record number on the secondary LCD. • The date on the primary LCD, along with “DATE” tag.
• The cell constant on the primary LCD and “CELL” message on the secondary LCD line. • The temperature coefficient on the primary LCD and “tc” message on the secondary LCD. For TDS Range • The conductivity value on the primary LCD and the temperature value on the secondary LCD. • The time and the date as described in EC Range. • The TDS factor on the primary LCD and the log number on the secondary LCD. • The temperature coefficient and the cell constant as described in EC Range.
For NaCl Range • The conductivity and temperature reading value as described in TDS Range. • The time and date as described in EC Range. • The salinity factor on the primary LCD and the log number on the secondary LCD, with “RCL” and “NaCl” tags displayed. • The reference temperature, the temperature compensation mode and the cell constant message as described above.
SETUP Setup mode allows viewing and modifying the following instrument parameters. The parameters are: • Cell Constant • TDS Factor • Temperature Compensation Coefficient • Reference Temperature • Current Time (hour & minute) • Current Date (year, month & day) • Beep Status • Instrument Id • Temperature Unit To enter SETUP mode press SETUP while the instrument is in measurement mode. Select a parameter with the ARROW keys. Press CAL to change a parameter value. The selected parameter will start blinking.
CELL CONSTANT Press CAL when the cell constant is displayed. The cell constant value and “CFM” tag will start blinking. Press the ARROW keys to change the cell constant (0.500 to 1.700). Press CFM to save the modified cell constant. Press CAL to escape without saving. TDS FACTOR Press CAL when “TDS fact.” is displayed. The TDS factor and “CFM” tag will start blinking. Press the ARROW keys to change the TDS factor (0.40 to 0.80). Press CFM to save the modified TDS factor.
Press the ARROW keys to toggle between 20.0 ºC and 25.0 ºC reference temperature value. Press CFM to save the modified reference temperature value. Press CAL to escape without saving. CURRENT TIME Press CAL when the current time is displayed. The hour and “CFM” tag will start blinking. Press the ARROW keys to change the hour. Press RANGE. The minutes and “CFM” tag will start blinking. Press the ARROW keys to change the minutes. Press CFM to save the modified value. Press CAL to escape without saving.
BEEP STATUS Press CAL when the beep status is displayed. Beep status (“On” or “OFF”) and “CFM” tag will start blinking. Press the ARROW keys to change the beep status (On or OFF). Press CFM to save the modified beep status. Press CAL to escape without saving. When enabled, beep sounds as a short beep every time a key is pressed or when the calibration can be confirmed. A long beep alert means that the pressed key is not active or a wrong condition is detected while in calibration.
TEMPERATURE CALIBRATION (for technical personnel only) All the instruments are factory calibrated for temperature. Hanna’s temperature probes are interchangeable and no temperature calibration is needed when they are replaced. If the temperature measurements are inaccurate, temperature recalibration should be performed. For an accurate recalibration, contact your dealer or the nearest Hanna Customer Service Center, or follow the instructions below.
• Use the ARROW keys to set the reading on the secondary LCD to that of the hot water. • When the reading is stable and close to the selected calibration point, the “CFM” tag will blink. • Press CFM to confirm. The instrument memorize calibration and restart in measurement mode. Note: If the reading is not close to the selected calibration point, “WRONG” tag will blink. Change the EC probe and restart calibration.
PC INTERFACE Data transmission from the instrument to the PC can be done with the HI 92000 Windows® compatible software (optional). HI 92000 also offers graphing and an on-line help feature. Data can be exported to the most popular spreadsheet programs for further analysis. To connect your instrument to a PC, use a standard USB cable connector. Make sure that your instrument is switched off and plug one connector to the instrument USB socket and the other to the USB port of your PC.
value (xx): • xx=06 EC range • xx=07 TDS range • xx=08 NaCl range The instrument sends the “ACK” (6) character every time a command is recognized and a “NAK” (21) character for invalid commands. COMMANDS REQUIRING AN ANSWER RAS MDR GLP Causes the instrument to send a complete set of readings in according with the current range: • Conductivity and temperature reading on EC range. • TDS and temperature reading on TDS range. • NaCl and temperature reading on NaCl range.
• EC calibration data (if available), which contains: • the number of calibrated standards (1 char) • the offset factor, with sign and decimal point (7 chars) • the cell constant, with sign and decimal point (7 chars) • the calibration time, yymmddhhmmss (12 chars) • standards information (for each standard) • standard value, with sign and decimal point (7 chars).
PAR Requests the setup parameters setting. The answer string contains: • Instrument ID (4 chars) • SETUP information (2 chars): 8 bit hexadecimal encoding.
PROBE MAINTENANCE EC 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. Make sure to reinsert the sleeve onto the probe properly and in the right direction. After cleaning the probe, recalibrate the instrument. The platinum rings support is made of glass. Take great care while handling the probe.
TROUBLESHOOTING GUIDE SYMP TOMS P ROBL E M SOL UTION Readings fluctuate up E C p r o b e s l e e v e n o t Inser the sleeve. and down (noise). p rop e rl y i n s e rt e d ; a i r Tap the probe to remove bubbles inside sleeve. air bubbles. T h e m e t e r d o e s n o t Out of order E C probe. a cce p t th e sta n d a rd solution for calibration. Fol l ow th e cl ea n i n g p roce d u re . If sti l l n o results replace the probe.
ACCESSORIES CONDUCTIVITY SOLUTIONS HI 70030C 12880 µS/cm (µmho/cm), 20 mL sachets (25 pcs.) HI 70031P 1413 µS/cm (µmho/cm), 20 mL sachets (25 pcs.) HI 70033P 84 µS/cm (µmho/cm), 20 mL sachets (25 pcs.) HI 70039P 5000 µS/cm (µmho/cm), 20 mL sachets (25 pcs.
OTHER ACCESSORIES HI 710005 Voltage adapter from 115 VAC to 12 VDC (USA plug) HI 710006 Voltage adapter from 230 VAC to 12 VDC (European plug) HI 710012 Voltage adapter from 240 VAC to 12 VDC (UK plug) HI 710013 Voltage adapter from 230 VAC to 12 VDC (South Africa plug) HI 710014 Voltage adapter from 230 VAC to 12 VDC (Australia plug) ChecktempC Pocket-size thermometer (range –50.0 to 150.0 ºC) HI 76404N Electrode holder HI 76310 Platinum 4-ring conductivity/TDS probe with temperature sensor and 1 m (3.
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. During operation, ESD wrist straps should be worn to avoid possible damage to the probe by electrostatic discharges.
Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA Technical Support for Customers Tel. (800) 426 6287 Fax (401) 765 7575 E-mail tech@hannainst.com www.hannainst.
