Hach sensION3 Instruction Manual
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Hach sensION3 Instruction Manual

Laboratory ph meter
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51750-18
Laboratory pH Meter
Instruction Manual
© Hach Company, 1999. All rights reserved. Printed in the U.S.A.
hm/dk 3/99

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  • Page 1 51750-18 Laboratory pH Meter Instruction Manual © Hach Company, 1999. All rights reserved. Printed in the U.S.A. hm/dk 3/99...
  • Page 2 TRADEMARKS OF HACH COMPANY ® AccuVac HachLink™ PourRite™ ACS-Plus™ Hach.com™ ProNetic™ ® AgriTrak™ Hach Logo Pump Colorimeter™ ® ® AluVer Hach One Rapid Liquid™ ® AmVer™ Hach Oval RapidSilver™ ® APA 6000™ HexaVer Ratio™ ® AquaTrend HgEx™ RegeneVer™ ® ®...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS CERTIFICATION ........................5 SPECIFICATIONS........................9 SAFETY PRECAUTIONS ...................... 10 OPERATION .......................... 11 SECTION 1 INTRODUCTION ..................13 1.1 Unpacking the Instrument ....................14 1.1.1 Standard Accessories ....................14 1.2 Keypad Description ......................14 1.3 Display Fields and Icons ....................16 1.4 Audible Signals ........................
  • Page 4 TABLE OF CONTENTS, continued 3.3 Reviewing Calibrations...................... 31 3.4 Measuring Samples......................31 SECTION 4 STORING AND RECALLING DATA ........... 33 4.1 Storing pH Measurements ....................33 4.2 Recalling Stored Data ......................34 4.3 Erasing Data........................34 4.3.1 Erasing Single Data Points..................34 4.3.2 Erasing All Data Points ....................

  • Page 5: Certification

    CERTIFICATION Hach Company certifies this instrument was tested thoroughly, inspected and found to meet its published specifications when it was shipped from the factory. The sens ™3 Laboratory pH Meter has been tested and is certified as indicated to the following instrumentation standards:...
  • Page 6 CANADIAN INTERFERENCE-CAUSING EQUIPMENT REGULATION, IECS-003: Class A emission limits. Supporting test records by Criterion Technology O.A.T.S. (NVLAP #0369), certified compliance by Hach Company. This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
  • Page 7 CERTIFICATION, continued Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.

  • Page 9: Specifications

    0.1 °C Accuracy ±1.0 °C Display: Custom LCD Inputs: 1 BNC; 5-pin Hach pH/temperature or Hach temperature probe; 1 pin-tip Outputs: One-way RS232 Power Requirements: 6–12 Vdc; use either Hach-supplied 115 or 230V, 50/60 Hz external power supply or a customer-provided supply with 50 mA output, 5.5-mm power plug with a 2.5 mm...

  • Page 10: Safety Precautions

    SAFETY PRECAUTIONS Section 2.2 on page 19 Section 2.3 on page 20 Section 2.4 on page 20 Section 5.1 on page 37...

  • Page 11: Operation

    GEFAHR Da das Arbeiten mit chemischen Proben, Standards und Reagenzien mit Gefahren verbunden ist, empfiehlt die Hach Company dem Benutzer dieser Produkte dringend, sich vor der Arbeit mit sicheren Verfahrensweisen und dem richtigen Gebrauch der Chemikalien vertraut zu machen und alle entsprechenden Materialsicherheitsdatenblätter aufmerksam zu lesen.

  • Page 13: Section 1 Introduction

    SECTION 1 INTRODUCTION Hach provides pH and ISE meters for applications from pH measurements to accurate Ion Selective Electrode work. This ™ manual describes the operation and use of the Hach sens Laboratory pH/mV/Temperature Meter (see Figure 1). This meter features a custom digital LCD display which simultaneously displays temperature and measurement results.

  • Page 14: Unpacking The Instrument

    Hach Customer Service, Loveland, Colorado for instructions. Hach’s toll free phone number for customers within the United States is 800-227-4224. For customers outside the United States, contact the Hach office or distributor serving you. 1.1.1 Standard Accessories • AC to DC adapter •...
  • Page 15 SECTION 1, continued Table 1 Keys and Description Description Exit/Power On- Turns the instrument on; turns it off from a Reading mode. Acts as a NO or Cancel key when the question mark icon is flashing. Exits setup function or aborts a setup change. Performs the following and returns to the most recent Reading mode: •...

  • Page 16: Display Fields And Icons

    SECTION 1, continued 1.3 Display Fields and Icons The display has two screens. The upper screen displays measurements or standard values, the operation mode in use, slope, sample/default temperature, pH or mV units, error codes, and indicates if the meter reading is stable. The lower screen displays the keys that are active.
  • Page 17 SECTION 1, continued Table 2 Main Display Elements Item No. Description Indicates meter is in Calibration mode. If the is flashing, it indicates calibration is necessary. Indicates meter is in Calibration Review mode. Indicates data is being sent to a printer/computer. Indicates recalled data that is currently displayed is being erased.

  • Page 18: Audible Signals

    SECTION 1, continued Table 2 Main Display Elements (Continued) Item No. Description Stabilizing... indicates signal from sample is not yet stable. When it disappears, the reading is stable and may be recorded or stored. Used with ? icon. Asking if user wants to store the displayed sample data or the calibration that has been just completed.

  • Page 19: Section 2 Instrument Setup

    SECTION 2 INSTRUMENT SETUP 2.1 Instrument Description ™ This sens 3 benchtop pH/mV meter is designed for laboratory use and operates on 115 or 230 VAC power. The meter measures from -2.0 to 19.99 pH units and the sample temperature. Displayed pH values are temperature corrected using the measured sample temperature or a default temperature setting.

  • Page 20: Probe Connections

    Hach electrodes with the 5-pin connector have the temperature sensing unit included in the electrode probe. If using an electrode with BNC connector, connect a Hach temperature probe to the 5-pin connector. Alternatively, measure the temperature manually and enter the value as the default temperature on the meter.

  • Page 21: Turning The Meter On

    SECTION 2, continued displayed data to the printer. The data may be either a current measurement or stored data. To send data to a computer, connect the 9-pin serial port on the meter to a 9-pin serial port of the computer. Pressing the PRINT key will send the currently displayed data to the computer.

  • Page 22: Millivolt Measurements

    -2000 to +2000. The millivolt mode is useful when measuring oxidation-reduction potential, performing potentiometric titrations, or preparing calibration curves. Detailed instructions for any Hach electrode are given in the electrode instruction manual. Titration instructions are included in the Hach ORP Electrode Instruction Manual, or in standard analytical...

  • Page 23: Section 3 Instrument Operation

    SECTION 3 INSTRUMENT OPERATION 3.1 Setup Menu ™ The sens 3 Portable pH meter has a setup menu which allows the analyst to choose options for connector choice, display lock, temperature units, display resolution, automatic buffer recognition, time, and date. To access the Setup menu, press the key.

  • Page 24: Turning Display Lock Off And On

    SECTION 3, continued 3.1.2 Turning Display Lock Off and On Setup 2 is the Display Lock option. This feature stops measurement reading fluctuation on the display once a stable reading is reached. The default setting is Off. When this feature is not used, the measurement value may continue to fluctuate.

  • Page 25: Selecting Measurement Resolution

    SECTION 3, continued 3.1.4 Selecting Measurement Resolution The meter can display measurement values to tenths (0.0), hundredths (0.00) or thousandths (0.000). The default is hundredths. 1. From the reading mode, press SETUP 2. The icon and the number (flashing) will be displayed. Setup Press the up arrow until the Setup number is 3.

  • Page 26: Setting The Time

    SECTION 3, continued 3.1.6 Setting the Time 1. From the reading mode, press SETUP 2. The icon and the number will be displayed. Setup 1 (flashing) Press the up arrow until the Setup number is 3. Change the time by pressing .

  • Page 27: Setting The Year

    Hach recommends a daily two-point calibration using buffers that bracket the sample pH. This will verify the electrode is working properly and allow the slope value to be stored.

  • Page 28: Performing A Calibration Using Ph 4, 6.86, 7, And 10 Buffers

    SECTION 3, continued 3.2.1 Performing a Calibration Using pH 4, 6.86, 7, and 10 Buffers 1. If using a probe without a temperature sensor, see Section 2.3.2 on page 20 and 2.6 on page 21 for information about obtaining and using a default temperature. 2.

  • Page 29: Calibrating With Other Buffers

    SECTION 3, continued 10. When the reading has been accepted, the standard number will change to 11. Repeat steps 8 and 9 for the third buffer or press if using EXIT two buffers. In either case, the slope value and the Store icons will appear.

  • Page 30: One-Point Calibration

    SECTION 3, continued 8. When the reading has stabilized, the standard number will change to If measuring in the mV mode, press ENTER to continue. 9. Rinse the electrode and place it in the next buffer. 10. Enter the pH value of the buffer using the number keys as described above.

  • Page 31: Reviewing Calibrations

    SECTION 3, continued 3.3 Reviewing Calibrations pH calibrations result in a linear calibration curve, so only one slope value is displayed in Cal Review mode. To view calibration data, make sure the meter is in Reading mode, then press REVIEW The display will show the calibration time.

  • Page 33: Section 4 Storing And Recalling Data

    SECTION 4 STORING AND RECALLING DATA 4.1 Storing pH Measurements ™ The sens meter can store up to 99 measurement readings. Data must be stored to recall it later for review, downloading, or printing. Although the meter display will only show the temperature, data location and pH/mV value, the following information is stored (and can be downloaded or printed) for each sample:...

  • Page 34: Recalling Stored Data

    SECTION 4, continued 4.2 Recalling Stored Data 1. To recall stored data, press the key while in the RECALL Reading mode. The screen will display the most recently saved or recalled measurement data. 2. Use the arrow keys to scroll to the desired storage location. Press again to allow number entry of a storage RECALL...

  • Page 35: Erasing All Data Points

    SECTION 4, continued 4.3.2 Erasing All Data Points 1. To erase data, it must be recalled first. Press the RECALL while in the Reading mode. See Section 4.2 for more information. 2. When the data point is displayed, press ERASE 3.

  • Page 37: Section 5 Printing/Transferring Data

    The Citizen PN60 printer requires a special cable to fit into the printer. This cable is shipped with the printer when ordered from Hach Company. Table 4 Standard 9-pin to 25-pin Printer Cable 9-pin D Connector Socket Serial Printer 25-pin D Connector, plug...

  • Page 38: Connecting To A Personal Computer

    SECTION 5, continued Connect the RS232 cable to the meter by lining up the holes in the cable connector with the pins of the meter serial port. Gently and firmly push the cable into the meter. Then secure the connection by screwing in the screws on either side of the cable port (see Figure 5).
  • Page 39 Use a communications software, such as HachLink™ (Cat. No. 49665-00) to collect data from the instrument. HachLink is a Windows-based application that allows a personal computer to capture data from several Hach instruments, ™ electrochemical meters. The captured including the sens data can be stored as a text file in a spread-sheet compatible format or a free-format text.

  • Page 40: Sending Data To Printers/Computers

    SECTION 5, continued • IBM PC/AT or compatible with a 386SX processor (16 MHz or better) • 4 megabytes of RAM • Hard disk drive with 2 megabytes or more of free space • 3-1/2 inch, 1.44 megabyte floppy disk drive •...

  • Page 41: Sending All Stored Data And The Average Ph Value

    Meter Serial Software Reading Temperature Date Time Location Reading Model Number Version 7.53 pH 22.7 C -30.0 10/03/98 08:30 sensIon3 12344577 PX.X 6.13 pH 13.6 C 50.0 10/04/98 09:11 sensIon3 12344577 PX.X. 7.01 pH 20.1 C -0.0 10/10/98 12:44 sensIon3 12344577 PX.X...

  • Page 43: Section 6 Troubleshooting

    Correcting problem conditions with the sens electrochemical meters is limited to responding to the error message displayed. Other problems must be handled by a Hach technician at a service center. Refer to Repair Service. Do not attempt to service the meter as there are no field-serviceable parts.

  • Page 44: Error Codes

    Standard will be displayed. or standards. Corrupt data Recalled data had a bad checksum. Call Hach Service. 6.4 Meter Service Request Questionnaire 1. What is the complete lot code of the meter and electrode? 2. On what date was the meter purchased? 3.

  • Page 45: General Information

    GENERAL INFORMATION At Hach Company, customer service is an important part of every product we make. With that in mind, we have compiled the following information for your convenience.

  • Page 47: Replacement Parts

    REPLACEMENT PARTS REQUIRED REAGENTS Quantity Required Description Per Test Unit Cat. No. Buffer Powder Pillows: pH 4.01, color-coded red............1..15/pkg....22269-95 pH 7.00, color-coded yellow ..........1..15/pkg....22270-95 pH 10.01, color-coded blue ............ 1..15/pkg ....22271-95 Buffer Solutions: pH 4.00, color-coded red............ 30 mL ... 500 mL....22834-49 pH 7.00, color-coded yellow ..........

  • Page 49: How To Order

    HOW TO ORDER...

  • Page 50: Repair Service

    REPAIR SERVICE...

  • Page 51: Warranty

    WARRANTY Hach warrants the meter against defective materials or workmanship for three years from the date of shipment. The Docking Station has a one-year warranty from the date of shipment.

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