Model MP515

Precision Conductivity Meter

Operation Manual

Shanghai San-Xin Instrumentation, Inc.

MP500 Series of Electrochemical Meters

一．Multi-parameter Meter

Model MP551pH/mV/ISE/Cond/DO Meter

二．Double Parameter Meters

1. Model MP521 Lab pH/Cond Meter (pH：±0.01 pH；Conductivity: ±1.0% FS)

2. Model MP522 Precision pH/Cond Meter (pH：±0.002 pH; Conductivity: ±0.5% FS)

3. Model MP523 pH/ISE Meter

4. Model MP525 pH/DO Meter

5. Model MP526 Cond/DO Meter

三．Single Parameter Meters

1. MP511 Lab pH Meter (±0.01 pH)

2. MP512 Precision pH Meter (±0.002 pH)

3. MP513 Lab Conductivity Meter (±1.0% FS)

4. MP515 Precision Conductivity Meter (±0.5% FS)

5. MP516 DO Meter

6. MP517 Sodium Ion Concentration Meter

7. MP518 Calcium Ion Concentration Meter

8. MP519 Fluoride Ion Concentration Meter

Table of Content

1. Brief Introduction -------------------------------------------------------------------

2. Technical Parameters ---------------------------------------------------------------

3. Introductions to the Meter ---------------------------------------------------------

3.1. LCD Display --------------------------------------------------------------------

3.2. Operation Keys ------------------------------------------------------------------

3.3. The Storage, Recall and Elimination of the Measuring Information -----

3.4. RS-232 Communication -------------------------------------------------------

3.5. Sockets ---------------------------------------------------------------------------

4. Conductivity Measurement --------------------------------------------------------

4.1. Preparation Work ---------------------------------------------------------------

4.2. Electrode Calibration -----------------------------------------------------------

4.3. Sample Test ----------------------------------------------------------------------

4.4. Important statements -----------------------------------------------------------

4.5. Parameter Setting ---------------------------------------------------------------

4.6. Considerations -------------------------------------------------------------------

5. Meter’s Complete Kit --------------------------------------------------------------

6. Warranty -----------------------------------------------------------------------------

ChartⅠ Meter Producer Setting Schedule

ChartⅡ Code Icon and Abbreviation Schedule

1. Brief Introduction:

Thanks for buying and using the Model MP515 Precision Conductivity Meter (the following called “meter” in short).

Before using this meter, please read the operation manual carefully in order to help use and maintain it correctly. On the basis of improving instrument performance constantly, we reserve the right of changing the content of this manual and accessories in case of not notifying in advance.

This meter is a perfect combination with the most advanced electronic, sensor technology and software design which is the best lab conductivity analysis meter with the highest performance and the lowest cost. It is suitable for the trade such as the petroleum, chemical industry, medicine, power plant and environmental protection, etc., especially has more extensive application in the fields of education and scientific research.

Built-in microprocessor chip, beautiful appearance and convenient operations, this meter has the following prominent features:

1.1. Meter meets with the requirement of international GLP standards. Its features up to automatic calibration, automatic temperature compensation, data storage, timing measurement, clock display, RS-232 output and function setting etc.

1.2. Adopts digital filter and step slipping technology to improve meter’s response speed and result accuracy. “      ” will appear when reading to be stable.

1.3. Adopts advanced automatic frequency convertible and voltage regulation technology to enlarge the measuring range of conductivity electrode which constant K=1 to 10 times. It can meet measuring accuracy requirement for range within 100mS/cm by using only one-point calibration. It is the particular one–point calibration function for this meter.

1.4. Automatically recognize 8 kinds of conductivity standard solution. User can choose anyone from two series of solutions: Europe & USA series and China series.

1.5. Automatic choose conductivity measuring range, the meter has function of non-linearity automatic temperature compensation for high purified water less than 10μS/cm, which can greatly improve the measuring accuracy. It is especially suitable for electric power, microelectronics and medicine business.

1.6. Meter’s circuit board adopts SMT film-covering technology to improve meter’s reliability.

1.7. Meter has the only product serial number.

1.8. Dustproof and waterproof meter meets IP54 standards, all sockets are seal protected by the silica gel caps.

2. Technical Parameters:

2.1. Conductivity:

2.2. Temperature:

2.3. Other Technical Parameters:

2.4. Working Condition:

3. Introductions to the Meter:

3.1. LCD Display:

① —— Measuring mode icon

② —— Measuring value

③ —— Time, date and the indication icons for special measuring state.

④ —— Measuring unit

⑤ —— Temperature compensation icon:

ATC — automatic temperature compensation

MTC — manual temperature compensation

⑥ —— Serial number and icon of the measuring value stored and recalled.

M+ — measuring value to be stored icon

RM — reading to be recalled icon; The left digit means serial number.

⑦ —— The measured temperature value and unit

⑧ —— RS-232 communication icon. When this icon appears, means meter has been connected with computer.

⑨ —— Timing measuring icon

⑩ —— Electrode calibration indication icon

—— Measuring value stable icon

3.2. Operation Keys:

The meter has 8 operation keys in all.

3.2.1. <     > — Switch key

3.2.2. < CAL > — Calibration key, to make meter enters into calibration mode.

3.2.3. < MODE > — Function key, press key to enter into the parameter setting mode, and will in turn display P1, P2, P3…

3.2.4. < UNIT > — Parameter mode key, press this key to alter the parameter mode:       (resistivity) →       (total dissolved solid) →      (salinity) →

         (conductivity); press key to choose modified position of parameter when in the parameter setting state.

3.2.5. < ENTER > — Entrance key, when in the state of calibration or parameter setting, press the key to confirm. Then the meter enters into measuring state after pressing this key.

3.2.6. < ▲ > and < ▼ > — Increase and decrease key

When in MTC state, press the key to increase or decrease the temperature value. Short-time press to alter 0.1℃ each time, while depress, the temperature will alter rapidly. When in the state of parameter setting, press the key to alter the number or ON/OFF state.

3.2.7. < M+/RM > — The compound key of memory and recall, short-time press (press time <1.5s) to save the measuring data, depress (press time > 2 s) to recall the saved measuring value.

3.3. The Storage, Recall and Elimination of the Measuring Information:

3.3.1. Store the measuring information:

(a) In the measuring mode, short press < M+/RM > key, LCD will display “ M+ ” icon and storage serial number, and meanwhile memory all the measuring information including time, date, serial number, measuring data, measuring unit, temperature, temperature compensation state and so on, meter can memory 600 groups of measuring information.

(b) When setting the timing measuring function, “    ” icon will appear on the LCD, and the meter will measure according to the time intervals set, and store the measuring information at the same time.

3.3.2. Recall measuring information:

(a) Under the measuring mode, depress the < M+/RM > key, the meter will recall the last stored information, and the storage serial number and “ RM ” icon will appear in the lower right corner of the LCD, and the complete measuring information, measuring time and date will be displayed alternatively on the upper right corner of LCD. Again press < ▼ > or < ▲ > key, meter will recall all the measuring information in turn, depress < ▼ > or < ▲ > key to rapidly check the measuring information under other serial number;

(b) In the recalling mode (there are “ RM ” icon and storage serial number in the lower right corner of the LCD), press < ENTER > key to return to the measuring mode.

3.3.3. Eliminate the stored measuring information:

In the recalling mode, depress the < M+RM > key for 5s, “      ” icon will display on the LCD for 2s. It means the internal storage has been eliminated, and then returns to measuring mode.

3.4. RS-232 Communication:

3.4.1.This meter adopts MP515 communication software which can achieve RS-232 communication function. The requirements for computer of this application software are: PC can stable operate the Windows XP operating system (Microsoft Excel 2000 or much higher version has been installed in PC). According to different selection of resolution setting (1280 x 1024 or 1280 x 800) to install MP515 communication software by following the indications. Open the MP515 communication software and connect meter, the LCD will display “     ” RS-232 communication icon. Meanwhile all the stored information including measuring value, measuring unit, temperature, temperature compensation state (ATC or MTC) and the last calibration information (calibration time, date and solution) will be transmitted to the computer.

3.4.2.Again press < M+/RM > key after meter being connected with computer, or  timing measuring function has been set, all the measuring information will be transmitted to computer through RS-232 and won’t be stored in meter. And there will also display a curve graph of measurement value changing with time on the interface of computer.

3.4.3. User can do operation such as analyzing, counting or printing etc. for all measuring information in “ Microsoft Excel ” file through the key “ Lead out ” in the interface of computer.

3.5. Sockets:

3.5.1. TEMP — Temperature electrode socket (RCA microphone socket)

3.5.2. COND — Conductivity electrode socket (four pins socket)

3.5.3. RS232 — RS232 communication connector socket

3.5.4. DC9V — DC9V power socket, Ф2.5, inner “+ ” outer “ - ”.

4. Conductivity Measurement:

4.1. Preparation Work:

4.1.1. Switch in power, press <     >key to turn on the meter, meter displays

     mode;

4.1.2. Press <UNIT> key to choose       (resistivity) →      (total dissolved solid) →      (salinity) →      (conductivity);

4.1.3. Install electrode holder and debug it properly;

4.1.4. Connect the 2401-M conductivity electrode into meter.

4.2. Electrode Calibration:

Press < CAL > key, “      ” is flashing on the upper right corner of LCD, indicate enters into the calibration mode, and wash the conductivity electrode with purified water and dry it, then insert it into the 1413μS/cm calibration solution, still it after stirring, when “    ” icon appears, means the display value is stable and again press < CAL > key, LCD will display flashing “ 1.413mS/cm ”, several seconds later the “      ” icon will appear and return to the measuring mode, at this time, LCD will display stable measuring value and calibration icon “   ”, indicate the calibration is finished.

Note: Meter only can be calibrated under the mode of      , and can not be calibrated in mode of    ,     and     , must switch to

mode, and again switch to the original mode after finishing calibration.

4.3. Sample Test:

4.3.1. Wash the conductivity electrode and throw off the water on it, then insert it into the solution, still it after stirring, (if the electrode is installed on the electrode rack to test, then need to short-shaking electrode rack), and take the reading after “    ” appears, which is the conductivity value of solution.

4.3.2. Press < UNIT > key can display the value of the resistivity, TDS or salinity value which correspond the conductivity value.

4.3.3. When using the conductivity electrode of electrode constant K=10, the measuring range can be enlarged to 2000mS/cm.

4.4. Important Statements:

4.4.1. This meter build-in below two kinds of calibration solution series, please set up in the parameter P1;

(a)      (Europe & U.S.A. series) — 84μS/cm, 1413μS/cm, 12.88 mS/cm and 111.9 mS/cm

(b)     (China series) — 146.6μS/cm, 1408μS/cm, 12.85mS/cm and 111.3 mS/cm

4.4.2. This meter has the unique one-point calibration function, user can choose the calibration solution based on the principle of the water samples and calibration solution conductivity as close as possible, in general the commonly used calibration solution is 1413 μ S / cm. The equipped 2401 - M conductivity electrode (K = 1 cm^-1) can be used within the range less than 100 mS / cm after calibrating with 1413 μ S / cm calibration solution. User can choose according to the chart (4-1).

Chart (4-1)

4.4.3. There are two kinds of calibration methods which have been set in meter, the standard solution calibration method and constant calibration method, it is the standard solution calibration method in item 4.2. “Electrode Calibration”, the priority choice is standard solution calibration method, for it can ensure better accuracy when the accuracy of standard solution is accurate. If user is used to use constant calibration method, please set the electrode constant in the parameter set of P5 (see P17 item 4.5.6.). The two calibration methods can be selectively chose to use, they won’t affect each other. LCD won’t display calibration indication icon when adopting constant calibration method.

4.4.4. The temperature compensation coefficient of meter is 2.0%/℃ by producer setting. However, the conductivity temperature coefficient is different for solution of different variety and concentrations, the user can refer chart  (4-2), as well as the data which they own get in the experiment, to set in the parameter setting of P4. Meter will do automatic non-linear temperature compensation in the high purified water which less than 10 μ S / cm.

Please note that when setting the temperature coefficient of compensation to be 0, means there is no temperature compensation when testing, the measuring value is based on current temperature.

Chart (4-2)

4.4.5. The information of meter’s other parameter setting, please refer to the chart (4-3).

4.4.6. Special attention: when the content of parameter setting is consistent with content of producer setting, conductivity measuring interface will display as picture (4-1), the upper right corner of LCD will display time, when the content for parts of parameter setting are different with content of producer setting, conductivity measuring interface will display as picture (4-2), the code icon will appear on the upper right of LCD, when parameters with code symbol to be set more than two, LCD just displays one of the code symbols, user should enter into the parameter setting interface and carefully check the contents of setting or restore the meter to producer setting and again set needed parameters.

4.5. Parameter Setting:

4.5.1. Conductivity testing parameter setting schedule (chart (4-3))

Chart (4-3)

4.5.2. Conductivity calibration solution series selection (P1)

(a) Press < MODE > key, meter enters into P1            mode, see picture (4-3);

(b) Press < ▲ > key to choose the standard solution series: USA (Europe & U.S.A. series), CH (China series)

(c) Press< MODE > key to enter into next parameter setting or press < ENTER > key to confirm and return to measuring mode.

Hh4.5.3. Electrode constant selection (P2)

(a) Under P1 mode to press the < MODE > key and enters into P2 mode;

(b) Press < ▲ > or < ▼ > key to change the constant setting: 0.1→0.5→1→5→10→50→100;

(c) Press< MODE > key to enter into next parameter setting or press < ENTER > key to confirm and return to measuring mode;

(d) The producer setting of P2 is K=1.

4.5.4. Benchmark temperature selection (P3)

(a) Under P2 mode to press < MODE > key and enter into the P3 mode;

(b) Press < ▲ > or < ▼ > key to choose the benchmark temperature: 25℃→20℃→18℃;

(c) Press< MODE > key to enter into next parameter setting or press < ENTER > key to confirm and return to measuring mode.

(b) The producer setting of P3 is 25℃.

Attention: If change the benchmark temperature to be other numerical value, upper right corner of LCD will display “       ”icon when in measuring mode.

4.5.5. Temperature compensation coefficient setting (P4)

(a) Under P3 mode to press < MODE > key and enters into P4 mode, shown as picture (4-4);

(b) Press < UNIT > key to shift，press < ▲ > or < ▼ > key to change the number, the data changing range is from 0.00 to 9.99;

Attention: When set the number to be 0.00, means there is no temperature compensation. For details please see item 4.4.4.;

(c) Press< MODE > key to enter into next parameter setting or press < ENTER > key to confirm and return to measuring mode;

(d) The producer setting of P4 is 2.00%.

Attention: If change the temperature coefficient to be other numerical value, the upper right corner of LCD will display “      ” icon when in measuring mode.

4.5.6. Constant calibration setting (P5), please refer to item 4.4.3.

(a) Under P4 mode to press < MODE > key and enters into P5 mode, LCD display last calibration constant, show as picture (4-5);

(b) Press < UNIT > key, data moves to right and flashing, press < ▲ > or < ▼ > key to change number based on the constant which marks on the body of conductivity electrode when the figure is flashing.

(c) Press< MODE > key to enter into next parameter setting or press < ENTER > key to confirm and return to measuring mode;

(d) If need to do calibration for other conductivity electrode which constant K is not 1, such as conductivity electrode with constant K=10.3, should enter into constant setting P2 to set the constant to be “10”, then enter into P5 mode and set the constant to be 10.3.

4.5.7. Time for timing measuring setting (P6)

(a) Press < MODE > key in mode P5 to enter into mode P6, see picture (4-6).

(b) Press < UNIT > key, the “    ” will move rightward in turn and flash. Press < ▲ > or < ▼ > to alter the number when number is flashing.

(c) Press< MODE > key to enter into next parameter setting or press < ENTER > key to confirm and return to measuring mode.

(d) Producer setting is “ 0 ” second.

Note：in the form “         ”, the number in the front of “ ：” is minute, and the maximum setting is 99, in the back of “ ：” is second, the maximum setting is 59. After setting the timing measurement mode, LCD will display the “      ”.

4.5.8. Temperature unit ℃/℉ setting (P7)

(a) Press < MODE > key in mode P6 to enter into mode P7, see picture (4-7).

(b) Press < ▲ > or < ▼ > key to choose temperature unit: ℃or℉.

(c) Press< MODE > key to enter into next parameter setting or press < ENTER > key to confirm and return to measuring mode.

4.5.9. Date setting (P8)

(a) Press < MODE > key in mode P7 to enter into mode P8, see picture (4-8).

(b) Press < UNIT > key, the number will move rightward and flash, press < ▲ > or < ▼ > key to alter the number. The upper right is month-day and lower right is year.

(c) Press< MODE > key to enter into next parameter setting or press < ENTER > key to confirm and return to measuring mode.

4.5.10.Time setting (P9)

(a) Press < MODE > key in mode P8 to enter into mode P9, see picture (4-9).

(b) Press < UNIT > key, the number will move rightward and flash, press < ▲ > or < ▼ > key to alter the number when number is flashing.

(c) Press< MODE >key to enter into next parameter setting or press < ENTER > key to confirm and return to measuring mode.

4.5.11. Restore to producer setting (P10)

(a) Press < MODE > key in mode P9 to enter into mode P10, see picture (4-10).

(b) Press < ▲ > key to choose “    ”, means parameter setting has been restored to the producer setting mode, and return to measuring mode after 2s.

4.6. Considerations:

4.6.1. The conductivity electrode has been calibrated before meter leaving factory, user can directly use it under normal circumstance;

4.6.2. It is recommended to calibrate one time every month under the normal circumstances. It must be calibrated in time for high accuracy measurement. It is necessary to calibrate the newly purchased conductivity electrode or after using a certain period;

4.6.3. Keep the conductivity electrode clean and wash it with purified water, then throw off the water on it before and after testing. It’d better to rinse electrode with sample solution when measuring;

4.6.4. The platinum surface of 2401-M conductivity electrode is plated with a layer of metal platinum black to use as reducing the electrode polarization, enlarging the measuring range, so the surface of platinum can not be rubbed, and it only can be washed in water in case of damaging the platinum black coating. Wash the organic component pollution with tepid water containing detergent or with alcohol.

4.6.5. Conductivity electrode before use can be immersed in water, to prevent the platinum black to be passivated, if found the platinum black plated electrode is invalid, can immerse it into 10% nitric acid solution or 10% hydrochloric acid for 2 minutes, then rinse with purified water and again test. The platinum black needs to be recoated, or replacing a new conductivity electrode if this situation does not improve.

4.6.6. Please set P10 to be “On” to make meter restore to producer setting when meter’s calibration or display appears abnormal phenomenon, and do calibrate and test again.

4.6.7. Please don’t take power plug out when meter still working, user only can take out the plug after meter to be turned off.

5. Meter’s Complete Kit:

5.1. Model MP515 precision conductivity meter

5.2. Model 602 flexible electrode holder

5.3. 2401-M conductivity electrode

5.4. 1413μS/cm conductivity standard solution (50mL)

5.5. 9V power adapter

5.6. RS-232 communication cable

5.7. MP515 communication software CD

5.8. Operation manual

5.9. Brief operation instruction

6. Warranty:

6.1. We warrant this meter to be free of charge maintain, replace the parts or products under normal using circumstances, from purchased time within one year caused by manufacturing bad and unable to work.

6.2. Attached conductivity electrode does not belong to this warrant range, but, if the newly purchased electrode went wrong without using, it’s free of charge to maintain or replace.

6.3. The above warranty is not apply to defects resulting from action of user such as misuse, improper wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification.

Chart Ⅰ Meter Producer Setting Schedule

Chart Ⅱ Code Icon and Abbreviation Schedule