Hanna Instruments HI 3512 Instruction Manual
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Hanna Instruments HI 3512 Instruction Manual

Two channels ph/orp/ise, ec/tds/nacl/resistivity, temperature bench meter
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Enlarged version
Instruction Manual
HI 3512
Two Channels
pH/ORP/ISE,
EC/TDS/NaCl/Resistivity,
Temperature
Bench Meter
w w w . h a n n a i n s t . c o m
1

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Summary of Contents for Hanna Instruments HI 3512

  • Page 1 Instruction Manual HI 3512 Two Channels pH/ORP/ISE, EC/TDS/NaCl/Resistivity, Temperature Bench Meter w w w . h a n n a i n s t . c o m...

  • Page 2: Table Of Contents

    OPERATIONAL GUIDE ................10 AUTO-RANGING EC CHANNEL ..............15 HI 3512 is provided with a series of new diagnostic features which add TEMPERATURE COMPENSATION EC CHANNEL ..........16 an entirely new dimension to the measurement of pH and EC, by allowing CONDUCTIVITY VERSUS TEMPERATURE CHART .........

  • Page 3: Functional Description

    • Extended temperature range on pH channel from –20 to 120 ºC FUNCTIONAL DESCRIPTION (–4 to 248 ºF), using HI 7662-T interchangeable temperature probes. Front view EC channel: • 7 memorized standards (0.00 µS/cm, 84.0 µS/cm, 1.413 mS/cm, 5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm and 111.8 mS/cm) for calibration.

  • Page 4: Specifications

    Rear view SPECIFICATIONS – 0 . 0 2 – 0 0 . 0 0 . 2 – 0 0 . 0 . 0 ± 0 . 0 0 0 . 7 - E 9 . 9 . c n 2 – 0 .
  • Page 5 : l C 0 . 0 0 . 0 o h s l a v s e u c / S n i l y t i s e R u l o n o i t 1 . 0 t c A l a u n o c...

  • Page 6: Operational Guide

    Allow for the electrode to adjust and reading to stabilize (hourglass OPERATIONAL GUIDE symbol turns off). POWER CONNECTION Plug the 12 Vdc adapter into the power supply socket. Note: This instrument use non volatile memory to retain the pH, mV, Ion, EC, NaCl calibrations and all other settings, when unplugged.
  • Page 7 Submerse the ISE electrode tip 3 cm (1¼”) into the ORP MEASUREMENTS sample to be tested and wait for the reading to To perform ORP measurements, connect an ORP electrode (see ACCESSORIES stabilize. section) to the instrument and turn it ON. 3 cm The ISE reading will be displayed along with the If necessary, enter the mV mode by pressing RANGE...

  • Page 8: Auto-Ranging Ec Channel

    EC range AUTO-RANGING EC CHANNEL The conductivity range is from 0 to 400 mS/cm . The actual conductivity range (the uncompensated conductivity) is up to 1000 mS/cm. The The EC, Resistivity and TDS scales are auto-ranging. The meter automatically instrument will display conductivity readings up to 1000 mS/cm. sets the scale with the highest possible resolution.

  • Page 9: Temperature Compensation Ec Channel

    TEMPERATURE COMPENSATION EC CHANNEL CONDUCTIVITY VERSUS TEMPERATURE CHART The conductivity of a solution with a specific electrolyte concentration changes with temperature. The relationship of the change in conductivity The conductivity of an aqueous solution is the measure of its ability to as a function of temperature is described by a solution’s temperature carry an electrical current by means of ionic motion.

  • Page 10: User Calibration

    • Ch2 temperature user calibration. From pH range PROCEDURE The HI 3512 offers a choice of 7 standard buffers (1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45 pH) and up to 2 custom buffers. The standard pH buffers are temperature compensated during calibration.
  • Page 11 FIVE-POINT CALIBRATION FIVE-POINT CALIBRATION FIVE-POINT CALIBRATION FIVE-POINT CALIBRATION FIVE-POINT CALIBRATION • Immerse the pH electrode and the temperature probe approximately 3 cm (1¼”) into a buffer solution of your choice (pH 1.68, 4.01, 6.86, 3 cm 7.01, 9.18, 10.01, 12.45 or a custom buffer) and stir the buffer gently.
  • Page 12 FOUR, THREE or TWO-POINT CALIBRATION Wrong buffer • Proceed as described in “FIVE-POINT CALIBRATION” section. The calibration cannot be confirmed. • Press ESC after the appropriate accepted calibration point. The The pH reading is not close to the selected buffer. Select another buffer instruments will return to calibration screen and will memorize the using the ARROW keys or change the buffer.
  • Page 13 Wrong old slope Use the ARROW keys to change the buffer value. An inconsistency between new and previous (old) calibration is detected. Clear old calibration parameters and initiate calibration from the current point. The instrument will keep all confirmed values during current calibration.

  • Page 14: Ph Buffer Temperature Dependence

    The instrument will display “Calibration Cleared” and the instrument pH BUFFER TEMPERATURE returns to measuring mode. DEPENDENCE Temperature has an effect on pH buffers. During calibration the instrument will automatically calibrate to the pH value corresponding to the measured or set temperature. ELECTRODE CONDITION C º...

  • Page 15: Relative Mv Calibration

    One for rinsing the electrode and one for calibration. The HI 3512 permits a 5 point calibration in 6 standard solutions (0.1, 1, 10, 100, 1000, 10000). It is advised to bracket expected ion concentration with your standards. For fluoride electrode the 2 ppm Change the input value or the Relative mV value to complete the standard is also available.
  • Page 16 FIVE-POINT CALIBRATION • The calibrated value and the third expected standard value will be displayed. Use part of this procedure for 2, 3 or 4 point • After the second calibration point is confirmed, immerse the ISE calibration. Press ESC. electrode approximately 2 cm (¾”) into the third calibration solution.

  • Page 17: Ec Calibration

    EC reading and no specific calibration is needed. standard is selected. PROCEDURE HI 3512 instrument offers a choice of 7 memorized standards (0.00 µS/cm, 84.0 µS/cm, 1.413 mS/cm, 5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm and 111.8 mS/cm). For accurate EC measurements, it is recommended to perform an offset calibration and slope calibration in the nearest value standard solution Slope over accepted value (130 % default slope).
  • Page 18 • Press CAL from EC range to enter calibration mode. • When the reading is stable and close to the selected standard, the Confirm functional key is displayed. • Leave the probe in the air and press EC. The instrument will display the measured EC on the LCD, first expected standard and the temperature reading.

  • Page 19: Good Laboratory Practice (Glp)

    GOOD LABORATORY PRACTICE (GLP) GLP is a set of functions that allows storage and retrieval of data regarding the maintenance and status of the electrode. All data regarding pH, Rel mV, ISE, EC or Salinity calibration is stored for the user to review when necessary. •...
  • Page 20 Notes: • Buffers (standards) displayed in video inverse mode are LAST EC CALIBRATION DATA from previous calibrations (pH and ISE range only). The last pH calibration data is stored automatically after a successful • The pH custom buffers are marked with an “*” on the calibration.

  • Page 21: Setup

    The following table lists the specific pH/ORP/ISE range parameters. SETUP Item Description Valid value Default Calibribration Number of days after Disable, 1 to 7 days Disable Setup mode allows viewing and modifying the measurement parameters. Timeout Calibration warning These are general SETUP parameters for all the ranges and range specific (pH/ISE) is displayed parameters.
  • Page 22 To enter SETUP menu, press SETUP function key while in measuring Date/Time mode. Focus on the Date/Time item. If SETUP is not displayed press MENU key. Press Modify. GENERAL PARAMETER SCREENS Backlight Focus on the Backlight item. keys to select item. Use ARROW keys to change focused values.
  • Page 23 Language AutoEnd stability Focus on the Language item. Focus on AutoEnd Stability item. Use the desired function key to change the option. Wait until new Press one of the displayed function keys to select the AutoEnd stability language is loaded. If language load fails the instrument will try to criteria.
  • Page 24 Instrument ID The meter informations are displayed: Focus on the Instrument ID item. -firmware version -language version -mV/EC and temperature factory calibration time/date Press Modify. pH CHANNEL RANGE SPECIFIC PARAMETERS SCREENS Calibration Timeout Focus on the Calibration Timeout item. Use ARROW keys to change the instrument ID. Press Accept to confirm or ESC to exit without saving.
  • Page 25 If Offset is set, after one point calibration the instrument evaluates the View Calibration Points offset and keeps the slopes unchanged. Focus on the View Calibration Points item. Custom Buffers Focus on the Custom Buffers item. Press the displayed function key to change option. If option is enabled the calibration buffers corresponding to the last calibration are displayed in the pH measurement screen.
  • Page 26 Focus on Charge/Slope item. If Standard was pressed. Use ARROW keys in order to select the desired combination. Use ARROW keys to focus on the desired electrode. If “None/-59.16“ is selected the slope of the probe can be changed by Press Accept to confirm setting or ESC to exit.
  • Page 27 EC CHANNEL RANGE SPECIFIC PARAMETERS Select No TC in order to display actual conductivity (no temperature compensation). Calibration Timeout Select MTC in order to automatically compensate conductivity using the Focus on the Calibration Timeout item. set temperature coefficient with the temperature manually selected by the user.

  • Page 28: Logging

    LOGGING This feature allows the user to log pH, Rel mV, ISE, EC, TDS, NaCl or Resistivity measurements. All logged data can be transferred to a PC through the USB port. The logging space includes 400 records of Log on demand and 600 Use ARROW keys to change the cell constant value.
  • Page 29 Notes: • At Power Off the current lot is automatically closed. If Delete is pressed. • If the 600 records space or 100 lots are reached, the “AutoLog space is full” message will be displayed. • Enter View Log Data mode and delete lots in order to free space.

  • Page 30: Mv Calibration (For Technical Personnel Only)

    mV CALIBRATION TEMPERATURE CALIBRATION (for technical personnel only) (for technical personnel only) All the instruments are factory calibrated for mV, EC and temperature. • Press CAL key on the pH range or on the EC range. The calibration screen is displayed. Press Temp function key to enter the temperature Hanna’s temperature probes are interchangeable and no temperature calibration mode.

  • Page 31: Pc Interface

    Confirm function key is displayed. instrument USB socket and the other to the serial or USB port of your PC. Note: If you are not using Hanna Instruments HI 92000 software, please see the following instructions. SENDING COMMANDS FROM PC It is also possible to remotely control the instrument with any terminal program.
  • Page 32 CHRxx Change the instrument range according with the parameter • Resistivity, EC and temperature reading on the value (xx): Resistivity range • xx=10 pH range/0.001 resolution on channel 1 • TDS, EC and temperature reading on the Resistivity range • xx=11 pH range/0.01 resolution on channel 1 •...
  • Page 33 • The unit of the second reading (1 char) (it is sent • electrode condition, with sign (3 chars). The only for Resistivity, TDS and Salinity ranges only). It “-01” code means not calculated represents the unit of the EC reading (0 - microsiemens, •...
  • Page 34 sign and decimal point (6 chars) encoding • Salinity calibration data (if available), which contains: • 0x01 - beep ON (else OFF) • the number of calibrated standards (1 char always 1) • 0x02 - degrees Celsius (else Fahrenheit) • the salinity factor, with sign and decimal point •...
  • Page 35 • the log interval (5 chars): the value is in seconds; for • For each record: AutoEnd log the value sent is 11000 • The number of the record (3 chars) • the log starting time, yymmddhhmmss (12 chars) • The reading status (1 char): R, O, U GLDxyqqq Requests all records of the qqq lot from the specified chan- •...

  • Page 36: Temperature Correlation For Ph Sensitive Glass

    • The reading status (1 char): R, O, U TEMPERATURE CORRELATION • The unit of the reading (2 chars): it is sent only for FOR pH SENSITIVE GLASS ISE, EC, Resistivity, TDS, Salinity log The resistance of glass electrodes partially depends on the temperature. The •...

  • Page 37: Electrode Conditioning And Maintenance

    For refillable electrodes: ELECTRODE CONDITIONING AND MAINTENANCE If the filling solution (electrolyte) is more than 2½ cm (1”) below the fill hole, add HI 7082 or HI 8082 3.5M KCl Electrolyte Solution for double junction or HI 7071 or HI 8071 3.5M KCl+AgCl Electrolyte Solution for single junction electrodes.

  • Page 38: Ec Probe Maintenance

    Follow the Storage Procedure above. EC PROBE MAINTENANCE pH CLEANING PROCEDURE Rinse the probe with clean water after measurements. If more cleaning • General Soak in Hanna HI 7061 or HI 8061 General is required, remove the probe sleeve and clean the probe with a cloth or Cleaning Solution for approximately ½...

  • Page 39: Troubleshooting Guide

    ACCESSORIES TROUBLESHOOTING GUIDE pH CALIBRATION SOLUTIONS HI 50004-01 pH 4.01 Buffer Solution, 20 mL sachet, 10 pcs. p s e / e s c x e s s e e v i y t r i e l e o r t c .
  • Page 40 HI 8082 3.5M KCl Electrolyte in FDA approved bottle, 4x30 mL, HI 1131B for double junction electrodes Glass-body, double junction, refillable, combination pH electrode. Use: general purpose. HI 8093 1M KCl+AgCl Electrolyte in FDA approved bottle, 4x30 mL ORP PRETREATMENT SOLUTIONS 9.5mm DIA 12 mm 0.37"...
  • Page 41 HI 1332B FC 911B Plastic-body (PES), double junction, refillable, combination pH Plastic-body (PVDF), double junction, refillable with built-in amplifier, electrode. Use: general purpose. combination pH electrode. Use: very high humidity. 12 mm 12 mm 0.5" 0.5" HI 1332 FC 911 120 mm 110 mm "S"...
  • Page 42 HI 7035L HI 7037L 100% NaCl, 500 ml, bottle Hanna Instruments reserves the right to modify the design, construction All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner. or appearance of its products without advance notice.
  • Page 43 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.com Local Sales and Customer Service Office Printed in ROMANIA MAN3512 07/14...

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