AMTAST EC910 Instruction Manual
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AMTAST EC910 Instruction Manual

Portable multiparameter water quality meter
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AMTAST
EC910 Portable Multiparameter Water Quality Meter
Instruction Manual
AMTAST USA INC

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Summary of Contents for AMTAST EC910

  • Page 1 AMTAST EC910 Portable Multiparameter Water Quality Meter Instruction Manual AMTAST USA INC...

  • Page 2: Unpacking The Meter

    EC910 Portable Multiparameter Water Quality Meter Introduction Thank you for selecting the AMTAST EC910 portable multiparameter water quality meter. This manual provides a -by-step guide to help you operate the meter, please carefully read the following instructions before use. UNPACKING THE METER: Before unpacking, ensure that the current work environment meet following conditions.
  • Page 3 EC910 Portable Multiparameter Water Quality Meter Display EC910 portable multiparameter water quality meter is equipped with a clear and bright LCD display that used to show measured values, mode indicators and help message. The following table describes the meaning of each indicator.
  • Page 4 EC910 Portable Multiparameter Water Quality Meter Keypad The meter has a succinct membrane keypad, names and symbols describe the each function key controls. INDEX: DESCRIPTION ● Power the meter ON/OFF. ● Freezes the measured value on the display, press the key again to resume measuring.

  • Page 5: Inserting The Batteries

    EC910 Portable Multiparameter Water Quality Meter Connectors EC910 portable meter provides 3 connectors for connecting the various types of sensors. Listed in the below table are the details of these connectors. INDEX: CONNECTOR FUNCTION BNC Connector For connecting the pH, ORP or Ion Selective Electrodes...

  • Page 6: Connecting The Sensor

    EC910 Portable Multiparameter Water Quality Meter Connecting the Sensor Take out the sensor from the carrying case. FOR THE pH, ORP AND ION SELECTIVE ELECTRODES: ● Insert the BNC connector into corresponding connector socket. Rotate and push the connector clockwise until it locks.
  • Page 7 EC910 Portable Multiparameter Water Quality Meter Preparing the pH Buffer Solutions EC910 portable multiparameter water quality meter is packaged with three pH buffer packets required for calibration. ● Open the pH7.00 buffer packet, place the powder into a 250ml volumetric flask. Pour distilled water 250ml to scale line, mix the solution until reagent is completely dissolved.

  • Page 8: Prior To Use

    EC910 Portable Multiparameter Water Quality Meter Prior to Use Remove the protective cap from the bottom of the sensor. ● FOR THE pH ELECTRODE: If the glass sensitive membrane on the electrode dries out, soak the electrode in 3M KCL solution or tap water for at least 15 minutes. DO NOT use distilled or deionized water, it will shorten the life of sensor.

  • Page 9: Setup Menu

    Setup Menu EC910 portable multiparameter water quality meter contains an integrated setup menu that allows you to customize each displayed option to meet measurement requirements. In the different modes, the meter will show the corresponding options. For the general options, once it is changed that will be applied to all modes.
  • Page 10 EC910 Portable Multiparameter Water Quality Meter ● 2 points 3 points Calibration Points: Select the number of calibration points. 4 points 5 points ● Monovalent Ion Valence: Select the ion valence of sensor. Divalent CONDUCTIVITY/TDS/SALINITY/RESISTIVITY MODES: PARAMETER DESCRIPTION OPTIONS DESCRIPTION DEFAULT K=0.1...
  • Page 11 EC910 Portable Multiparameter Water Quality Meter DISSOLVED OXYGEN MODE: PARAMETER DESCRIPTION OPTIONS DESCRIPTION DEFAULT ● 1 point Calibration Points: Select the number of calibration points. 2 points Pressure Coefficient: Setting Range: 450 to 850mmHg Select the default barometric pressure coefficient.

  • Page 12: Setting The Default Parameters

    EC910 Portable Multiparameter Water Quality Meter Calibration Due: 1 to 31 days … When calibration due reminder is enabled, if you do not recalibrate meter within a specified time period, ● Disable the meter will automatically show indicator. Date and Time: Sets the date and time of the meter.

  • Page 13: Exit The Setup Menu

    EC910 Portable Multiparameter Water Quality Meter Press  or  key to scroll through menu, select the parameter you want to set (Refer to Setup Menu section).  Press ENTER key to confirm, the display shows an option in the submenu.

  • Page 14: Setting The Date And Time

    EC910 Portable Multiparameter Water Quality Meter Setting the Date and Time EC910 portable meter has a real time clock that is used to time -stamp stored measured value and calibration data. Follow the steps below to set the date and time during the first use.

  • Page 15: Automatic Temperature Compensation

    EC910 Portable Multiparameter Water Quality Meter Press  or  key to set the date and time. Press ENTER key to confirm, the meter returns to measurement mode. Setting is completed. Temperature Compensation In order to get accurate measuring results, you need to enable the manual or automatic temperature compensation before measurement or calibration.

  • Page 16: Single Point Calibration

    Calibration EC910 portable multiparameter water quality meter allows up to 5 points calibration in the pH mode. We recommend that you perform at least 2 points calibration for high accuracy measurement. The meter will automatically recognize and calibrate to following standard buffer values.

  • Page 17: Multi-Point Calibration

    EC910 Portable Multiparameter Water Quality Meter MULTI-POINT CALIBRATION: Make sure that you have selected 2 to 5 points calibration in the setup menu. Repeat steps 1.2 to 1.5 above. When the first calibration point is completed, the display will show “CAL2”. The meter prompts you to continue with second point calibration.
  • Page 18 EC910 Portable Multiparameter Water Quality Meter pH CALIBRATION WITH THE USER-DEFINED BUFFERS: Make sure that you have selected “USER” option in the setup menu. Custom buffer solution values should be at least 1 pH unit apart from each other. Rinse the pH electrode with distilled water. Dip the electrode into the custom buffer solution. Stir the sensor gently. The meter shows the current measured value.
  • Page 19 EC910 Portable Multiparameter Water Quality Meter pH Calibration Report This program lets you check the parameters of pH electrode for diagnostic purposes. Press MR key in the pH measurement mode, the display shows “LOC/P-01”. Press  or  key until the meter shows “ELE/P-02” (Electrode Diagnosis).
  • Page 20 EC910 Portable Multiparameter Water Quality Meter Press  key again, the meter shows the slope of each pH buffer group. …..Calibration Points …..Slope After the browsing, press MEAS key to exit the currect mode.  If you are not calibrate the meter or calibration is not successfully, press MR key, the display will show "----" only.

  • Page 21: Orp Calibration

    EC910 Portable Multiparameter Water Quality Meter ORP Calibration EC910 portable multiparameter water quality meter allows 1 point calibration in the relative mV mode, but calibration is not necessary unless exact readout agreement with a work standard and at a specific ORP value is needed.
  • Page 22 EC910 Portable Multiparameter Water Quality Meter ORP Calibration Report This program lets you check the millivolt offset in the ORP mode. Press MR key in the ORP measurement mode, the display shows “LOC/P-01”. Press  or  key until the meter shows “ELE/P-02” (Electrode Diagnosis).

  • Page 23: Measurement Units

    EC910 Portable Multiparameter Water Quality Meter Ion Concentration Calibration EC910 portable multiparameter water quality meter supports ion concentration calibration up to 5 points with minimum of 2 points, available calibration points include the following options. MEASUREMENT UNITS CALIBRATION POINTS 0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000 mg/L 0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000...
  • Page 24 EC910 Portable Multiparameter Water Quality Meter Press CAL key, the meter shows 0.001ppm (or mg/L, mol/L, mmol/L). If necessary, press  or  key to select the desired calibration point (e.g., 0.01ppm). Rinse the Ion Selective Electrode with distilled water, then rinse with a small amount of ion standard solution.
  • Page 25 EC910 Portable Multiparameter Water Quality Meter Rinse the Ion Selective Electrode with distilled water. Dip the electrode into corresponding calibration solution. Stir the sensor gently. Press ENTER key, “Calibration” indicator begins flashing. Wait for the measured value to stabilize, the display shows “1/CAL3”. The meter prompts you to continue with third point calibration.
  • Page 26 EC910 Portable Multiparameter Water Quality Meter Ion Calibration Report This program lets you check the slope of the Ion Selective Electrode. Press MR key in the ion measurement mode, the meter shows “LOC/P-01”. Press  or  key until the display shows “ELE/P-02” (Electrode Diagnosis).

  • Page 27: Conductivity Calibration

    Conductivity Calibration EC910 portable multiparameter water quality meter is capable of using the three types of conductivity electrodes. Before calibration or measurement, you need to select the different sensors as per your sample concentration. The table below shows available sensors and its effective measuring ranges.
  • Page 28 EC910 Portable Multiparameter Water Quality Meter Dip the conductivity electrode into the calibration solution, the meter automatically shows current calibration standard (e.g., 1413µS/cm). Press ENTER key to confirm, “Calibration” indicator begins flashing. Enter Wait for the measured value to stabilize, the display shows “END”. The meter returns to measurement mode automatically. Calibration is completed.

  • Page 29: Manual Calibration

    Repeat steps 2.3 to 2.4 above until the display shows “END”. The meter returns to measurement mode automatically. Calibration is completed. MANUAL CALIBRATION: EC910 portable meter provides a quick manual calibration mode that allows user to easily calibrate the meter. Record the cell constant value on the electrode (e.g., K=1.08).
  • Page 30 EC910 Portable Multiparameter Water Quality Meter Press and hold the key for 3 seconds to enter setup menu, the display shows “CELL” option. Press ENTER key to confirm, the meter enters the cell constant setting mode. Enter Press  or  key to select “USER” option.
  • Page 31 EC910 Portable Multiparameter Water Quality Meter Press ENTER key to confirm, the meter enters User-Defined mode. Enter Press  or  key to set each digit according to previous record. Press ENTER key to confirm until the setting values stop flashing. The meter returns to measurement mode automatically. Setting is completed.
  • Page 32 EC910 Portable Multiparameter Water Quality Meter Conductivity Calibration Report This program lets you check the calibration factor of the conductivity electrode. Press MR key in the conductivity measurement mode, the display shows “LOC/P-01”. Press  or  key until the meter shows “ELE/P-02” (Electrode Diagnosis).
  • Page 33 DO Calibration in % Saturation Mode EC910 portable multiparameter water quality meter can be calibrated quickly in air. In the percentage saturation mode, the meter is able to perform either 1 or 2 points calibration. For single point calibration, we recommend that you perform 100% saturation calibration in the air. For the 2 points calibration, you need to use saturated anhydrous sodium sulfite solution (zero oxygen solution).
  • Page 34 EC910 Portable Multiparameter Water Quality Meter 2 POINTS CALIBRATION: Make sure that you have selected 2 points calibration in the setup menu. Press CAL key, the meter shows “100/CAL1”. Press  or  key until the display shows “0/CAL1”. ...
  • Page 35 EC910 Portable Multiparameter Water Quality Meter Dip the dissolved oxygen probe into air-saturated water for 3 to 5 minutes, press ENTER key to confirm. Wait for the measured value to stabilize, the display shows “END”. The meter returns to measurement mode automatically. Calibration is completed.
  • Page 36 EC910 Portable Multiparameter Water Quality Meter Dip the dissolved oxygen probe into the air-saturated water for 3 to 5 minutes. Press ENTER key to confirm, “Calibration” indicator begins flashing. Enter Wait for the measured value to stabilize, the display will show “END”. The meter returns to measurement mode automatically. Single point calibration is completed.
  • Page 37 EC910 Portable Multiparameter Water Quality Meter Dip the dissolved oxygen probe into the saturated anhydrous sodium sulfite solution (zero oxygen solution). Stir the probe gently. Press ENTER key to confirm, “Calibration” indicator begins flashing. Enter Wait for the measured value to stabilize, the display shows “8.25/CAL2”. The meter prompts you to continue with second point calibration.

  • Page 38: Temperature Calibration

    EC910 Portable Multiparameter Water Quality Meter Temperature Calibration During the measurement, when automatic temperature compensation is enabled, if the temperature reading displayed differs from that of an accurate thermometer, you need to calibrate the meter. Press and hold the C key for 3 seconds to enter temperature calibration mode, the display shows current temperature reading.

  • Page 39: Orp Measurement

    Dip the electrode into the sample solution, stir the sensor gently. Wait for the reading to stabilize, record the measured value on the display. ORP Measurement EC910 portable meter contains two millivolt measurement modes. ABSOLUTE MILLIVOLT MODE: ● Press MODE key until the display shows measurement unit “mV”, the meter is now enters absolute millivolt measurement mode.

  • Page 40: Ion Concentration Measurement

    Wait for the reading to stabilize, record the measured value on the display. Salinity Measurement EC910 portable meter provides two salinity measurement modes: practical salinity (unit: PSU) and natural seawater (unit: ppt). Press MODE key until display shows indicator and measurement unit “PSU”, the meter is now enters practical salinity measurement mode.

  • Page 41: Dissolved Oxygen Measurement

    Dissolved Oxygen Measurement EC910 portable multiparameter water quality metere is suitable for measuring the water, wastewater, brine and other liquids. If you use meter to measure seawater or other water containing large amounts of salt, please set the salinity coefficient before use.

  • Page 42: Storing And Recalling Data From Memory

    EC910 Portable Multiparameter Water Quality Meter Storing and Recalling Data from Memory EC910 portable multiparameter water quality meter allows up to 500 data sets to be stored and recalled. MEMORY INPUT: During the measurement process, press MI key to input measured value into the memory, “Memory” indicator appears on the display.
  • Page 43 EC910 Portable Multiparameter Water Quality Meter Press  key, the meter shows date and time of the stored data (Format: mm-dd, hh-mm). Press  key again, the display shows the stored data. After the browsing, press MEAS key to exit the current mode.

  • Page 44: Receiving Data

    Communication AMTAST USA INC provides a free Data Acquisition System that can be used to transfer data, receive the measuring values or import the data to Excel. Before using, ensure that Windows 7/8/10 operating system has been installed on your computer.

  • Page 45: Ph Electrode Care And Maintenance

    EC910 Portable Multiparameter Water Quality Meter pH Electrode Care and Maintenance Since pH electrode is susceptible to dirt and contamination, clean as necessary depending on the extent and condition of use. AFTER MEASURING: Rinse the pH electrode in distilled water, store the electrode into the electrode storage solution.

  • Page 46: Troubleshooting

    EC910 Portable Multiparameter Water Quality Meter Conductivity Electrode Care and Maintenance ● Ensure that the conductivity electrode is thoroughly washed with distilled water after each use. ● If there is a build-up of solids inside the measurement area of the cell, these should be removed very carefully with a cotton bud soaked in solvent, taking care not to touch the metal parts of the inner cell.

  • Page 47: Specifications

    EC910 Portable Multiparameter Water Quality Meter Specifications Model EC910 Range -2.000~20.000pH Accuracy ± 0.002pH Resolution 0.1, 0.01, 0.001pH Calibration Points 1 to 5 points Calibration Solutions USA, NIST, DIN, User-Defined Buffer Temperature Compensation 0~100° C, 32~212° F, Manual or Automatic Range -1999.9~1999.9mV...
  • Page 48 EC910 Portable Multiparameter Water Quality Meter Range 0~100MΩ Resistivity Accuracy ± 1% F.S Resolution 0.01, 0.1, 1 Range 0.00~20.00mg/L (or ppm) Accuracy ± 0.2mg/L Resolution 0.01mg/L Dissolved Oxygen Calibration Points 1 or 2 points Temperature Compensation 0~50° C, 32~122° F Pressure Correction 60.0~112.5kPa, 450~850mmHg...

  • Page 49: Sample Type

    EC910 Portable Multiparameter Water Quality Meter Addendum 1: Optional pH Electrodes EC910 portable multiparameter water quality meter is equipped with a general purpose pH electrode, if it can not fully meet your measurement requirements, please refer to the table below to select an applicable sensor.
  • Page 50 EC910 Portable Multiparameter Water Quality Meter Addendum 2: Optional Ion Selective Electrodes The meter is capable of connecting a variety of composite ion selective electrodes. The following list shows the selectable sensors and its range. MODEL RANGE F-US Fluoride 1× 10...
  • Page 51 EC910 Portable Multiparameter Water Quality Meter Addendum 5: How to calculate the temperature coefficient To determine the temperature coefficient of sample solution use this formula: × 100% -25)-C -25) Where: =Temperature coefficient =Conductivity at Temperature A =Conductivity at Temperature B...
  • Page 52 EC910 Portable Multiparameter Water Quality Meter Addendum 7: Pressure VS Altitude Table ALTITUDE (m) mmHg 101.3 100.1 98.8 97.6 96.4 95.2 94.0 92.8 91.7 90.5 1000 89.4 1100 88.3 1200 87.2 1300 86.1 1400 85.0 1500 84.0 1600 82.9 1700 81.9...

  • Page 53: Warranty

    Hazardous Substance Statement AMTAST USA INC is committed to the reduction and eventual elimination of all hazardous substances in both the manufacturing process and finished products we supply. We have an active manufacturing and procurement program to minimize and eliminate the use of harmful heavy metals such as cadmium, lead, mercury and the like.

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