Loviband SensoDirect 150 Instruction Manual Download Page 35 | Manualshive

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9. RS232 PC-Serial Interface

The instrument has an RS232 PC serial interface via the RS-232 Out
Terminal“ (Page 6, Fig. A-18) .

Data output is via a 16 digit stream which can be downloaded to
user‘s specific application. An RS232 lead with the following con-
nection will be required to link the instrument to the PC serial port:

Meter PC (3.5 mm jack plug)

(9W ‚D “ Connector)

    Center Pin........................Pin 4
    Ground/shield...................Pin 2

2.2

K

resister

Pin 5

The 16 digit data stream will be displayed in the following format :

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

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Summary of Contents for SensoDirect 150

Page 1: ...SensoDirect 150 MultiMeter Instrument Instruction Manual GB pH ORP DO CD TDS ...

Page 2: ...ustment Procedure 26 7 1 Check Memory Space 27 7 2 Clear Memory 27 7 3 Date Time Setting 27 7 4 Sample Time Setting 27 7 5 Auto Power Off Default Setting 28 7 6 Temp Unit Default Setting 28 7 7 pH Manual Temp Value Setting 28 7 8 CD Temp Compensation Factor Setting 28 7 9 CD µS mS TDS ppm Setting 29 7 10 DO Salt Compensation Value Setting 29 7 11 DO Height Altitude Compensation Value Setting 30 7 ...

Page 3: ...hut off saves battery life manual shut off possible by pressing Power button for 2 seconds Default changeable auto power off manual power off With default set at auto power off power will off automatically after 10 minutes if no button is pressed Display lapse time Approx 1 second Data Output RS 232 PC serial interface Operating Temperature 0 to 50 C 32 to 122 F for the instrument not including pr...

Page 4: ...nput Impedance 1012 ohm Temperature Compensation for pH measurement Manual 0 to 100 C 32 to 212 F Automatic ATC 0 to 65 C 32 to 149 F with tem perature probe pH Calibration 1 to 3 point calibration using pH 7 pH 4 pH 10 buffer solutions Three point calibration ensures best linearity and accuracy Measurement Range Resolution Accuracy pH 0 to 14 pH 0 01 pH 0 02 pH 2 digits mV 1999 to 1999 mV 1 mV 0 ...

Page 5: ...with temperature compensa tion factor variable between 0 to 5 per C Probe Operating Temperature 0 to 60 C 32 to 140 F Probe Dimension Round 22 mm diameter x 120 mm length Probe Weight approx 65 g Range Measurement Resolution Accuracy 200 µS 0 to 200 0 µS cm 0 1 µS cm 2 F S 1 digit 2 mS 0 2 to 2 000 mS cm 0 001 mS cm 20 mS 2 to 20 00 mS cm 0 01 mS cm 200 mS 20 to 200 0 mS cm 0 1 mS cm F S Full Scal...

Page 6: ...ment Resolution Accuracy C 0 C to 60 C 0 1 C 0 8 C F 32 F to 140 F 0 1 F 1 5 F E Dissolved oxygen Oxygen Probe Polarographic type oxygen probe Probe Compensation and Adjustment Temperature 0 to 50 C automatic 3 to 122 F Salt 0 to 39 Salt Height 0 to 8900 meter Probe Weight approx 195 g Probe Size Round 190 mm length x 28 mm diameter Measurement Range Resolution Accuracy 23 5 C Dissolved Oxygen 0 t...

Page 7: ...utton A 6 Function Button Range Button Down Button A 7 Send Button Clock Button A 8 SET Button Logger Button A 9 Stand A 10 Battery Compartment Cover A 11 Battery Cover Screw A 12 Tripod Fix Nut A 13 Temp Socket pH ATC Socket A 14 CD Socket A 15 DO Socket A 16 pH Socket BNC Socket A 2 A 3 A 4 A 5 A 6 A 7 A 8 A 1 A 15 A 14 A 13 A 16 A 12 A 9 A 11 A 10 ...

Page 8: ...n A 20 LCD Brightness Adjust Attention Please do not put more than one electrode only into the wa ter sample when using an instrument that works with various electrodes Only start the measurement for which the according electrode is immersed in the sample A 17 A 18 A 19 A 20 DC IN RS232 RESET ...

Page 9: ...emp 25 0 C Temp value Temp unit pH or mV Manual Temp or Auto Temp 10 00 The meter default settings are as follows The display unit is set to pH The temperature unit is set to C Manual temperature setting without ATC probe connection Auto power off Data logger function sampling time 2 seconds ...

Page 10: ...isplay of bottom right shows pH and Manual Temp indicator 4 Adjust the Manual Temp value exactly to the same temperature as the solution For procedure refer to chapter 7 7 page 28 5 Remove cap and hold the pH Electrode body Fig B 2 and com pletely immerse the Sensing Head Fig B 3 in the solution to be measured and gently swirl the probe 6 The upper display will show the pH value the bottom left di...

Page 11: ...ample below When not in use the Electrode Sensing Head Page 8 Fig B 3 should always be immersed in water by part filling the probe cap Page 8 Fig B 4 and ensuring that the cap is firmly lifted onto the probe Failure to do so will reduce probe life 3 3 mV Measurement The instrument has a built in mV millivolt measurement function which enables you to make ion selective ORP oxidation reduction poten...

Page 12: ...ular calibration to ensure high accuracy measurements Required Equipment for Calibration 1 pH Electrode 2 pH buffer solutions Calibration Procedure 1 Attach the pH Electrode by installing the Probe Plug Page 8 Fig B 1 into the pH Socket BNC Socket Page 5 Fig A 16 2 Power on the meter set the mode to pH measurement and the bottom right display will show PH 3 Adjust the Temperature Compensation Valu...

Page 13: ...the buffer solution value is beyond pH 7 00 pH 4 00 pH 10 00 for example 7 01 4 02 10 03 then use button button to adjust the display value to exactly match the pH buffer solution value 7 Press the Enter button twice to save the calibration data and finish the calibration procedure 8 The described procedure can be performed for the following calibration points pH7 calibration pH4 calibration pH10 ...

Page 14: ...d buffer solution The upper display will show the ORP value in mV 4 Press the REC button and HOLD button at the same time The display will show the following screen as an example Now release 5 Use button button to adjust the upper display value to exactly match the ORP buffer solution value Press the Enter button twice to save the calibration data and finish the calibra tion procedure ORP calibrat...

Page 15: ...ange 24 2 C Temp value Temp unit Auto or Manual range 19 00 The meter default settings are as follows The display unit is set to conductivity µS mS The temperature unit is set to C Temp compensation factor is set to 2 0 per C Auto range Auto power off Data logger function sampling time 2 seconds Range scale ...

Page 16: ...ight display shows a value e g 200 mS and Auto Range 4 Remove probe cap and hold the probe body Fig C 2 and com pletely immerse the Sensing Head Fig C 3 in the solution to be measured Swirl the probe to let any air bubble escape from the sensing head 5 The display will show the conductivity values in either mS cm or µS cm At the same time the bottom left display will show the Temp value of the mea...

Page 17: ... ment value 3 If the display shows it indicates an overrange Select the next higher range If the display shows it indicates an underrange Select the next lower range 4 To change Manual Range back to Auto Range press the Range button continuously for at least two seconds until the bottom right display shows the Auto Range Indicator Release the Range button Now the meter is set for Auto range mode a...

Page 18: ...vity Standard Solution 20 mS range calibration solution 12 88 mS Conductivity Standard Solution or other Conductivity Standard Solution 2 Install the Probe Plug Page 14 Fig C 1 into the CD Socket Page 5 Fig A 14 3 Power on the meter and set the mode to conductivity measurement µS mS 4 Hold the probe body Page 14 Fig C 2 and completely immerse Sensing Head Page 14 Fig C 3 in the standard solution S...

Page 19: ...ce to save the calibration data and finish the calibration procedure If only one calibration point is needed just set the 2 mS range 1 413 mS Cal A multi point calibration procedure should always start with 2 mS range 1 413 mS Cal then proceed to other ranges 20 µS range 20 mS range or 200 mS range if necessary CD CAL v ENTER Y 23 5 C 1 413 ...

Page 20: ... and Calibration Procedure ATTENTION Make sure the Oxygen probe is filled with Elec trolyte To fill the Probe s Electrolyte refer to chapter 5 3 Probe maintenance page 22 The meter default settings are as follows The display unit is set to O2 The temperature unit is set to C Auto power off Data logger sampling time 2 seconds ...

Page 21: ...ore measurement Wait approx 2 minute until the reading value stabilises If the reading value on air is not within 20 7 to 21 1 20 9 0 2 then proceed with calibration procedures first For calibration procedures please refer chapter 5 2 page 21 After completing the calibration procedures the display should show a value between 20 8 and 21 0 20 9 0 1 4 Press the Function button once and the bottom ri...

Page 22: ... is achieved by swirling the probe in the solution During laboratory measurements the use of a magnetic stirrer agitator is recommended In this way errors due to air diffusion in the solution are reduced to a minimum 6 The display will show the Dissolved Oxygen values mg L At the same time the bottom left display will show the Temp value of the measured solution 7 Rinse the probe carefully with no...

Page 23: ... 5 minutes until the display reading values stabilise with no fluctuation 4 Press the REC button and HOLD button at the same time The display will show the following screen as an example Now release 5 Press the Enter button twice This will save the calibration data and finish the calibration procedure Finally the lower display will show O2 CAL OK Return to the normal screen The complete calibratio...

Page 24: ...lyte or change the diaphragm set Then re calibrate Diaphragm probe head including diaphragm set A key component of the oxygen probe is the thin Teflon diaphragm housed in the tip of the probe This diaphragm is permeable by oxygen molecules but not by the considerably larger molecules contained in the electrolyte Accordingly oxygen may diffuse throughout the electrolyte solution contained in the pr...

Page 25: ...ontainer with new Electrolyte 4 Screw the probe head Fig E 3 back onto the probe body 5 When not in use insert the probe head into the probe protection cover Page 19 Fig D 5 that is equipped with a wet sponge Probe Electrolyte Probe head including Diaphragm set E 1 E 2 E 3 Fig E E 1 Probe body E 2 Temp sensor E 3 Probe head ...

Page 26: ...e will appear on the display To delete the maximum value just press the Hold button once The display will then show only the REC symbol and the meter will continue to record data in the memory b Press the REC button again The REC MIN symbol along with the minimum value will appear on the display To delete the minimum value just press the Hold button once The display will then show only the REC sym...

Page 27: ...w a DATA indicator along with REC marker Press the Logger button once to stop the data logger function The DATA indicator will disappear If you press the Logger button once more the Data Logger function will re start d Manual Data Logger Sampling time is set to 0 second Please refer to chapter 7 4 page 27 Press the Logger button once to save one set of data in the memory At the same time the botto...

Page 28: ...the ESC button to return to the normal measuring display 2 To select Advanced Setting Function press and hold the SET button then press again to successively show the following 7 1 Memory Space 7 2 Clear Memory 7 3 Date Time Set 7 4 Sample Time 7 5 Auto Power Off 7 6 Temp Unit The following functions appear only if the corresponding measure ment function is selected pH CD DO 7 7 M TEMP SET pH mode...

Page 29: ...onfirm Press the ESC button once to quit and return to the main measurement display 7 3 Date Time Setting Use Up Down and Enter to set the Date year month date and the Time hour min sec After Date Time adjustment push the Enter button then press the ESC button to save the clock data into the memory and return to the normal display 7 4 Sample Time Setting Use Up Down and Enter to select the Sample ...

Page 30: ...ress ESC to save the data and return to the normal display 7 7 pH Manual Temp Setting This procedure is only to adjust the manual temperature compensation value for pH measurement The lower display will show M TEMP SET v Enter Y Use Up Down to select the desired manual Temp compensation value Press Enter once then press ESC to save the data and return to the normal display 7 8 Temp Compensation Fa...

Page 31: ...ion Use Up Down to select 1 or 0 0 µS mS 1 ppm After adjusting the unit µS mS ppm press Enter then press ESC to save the data and return to the normal display 7 10 DO Salt Compensation Value Setting This procedure is only available for the DO function The lower display will show Salt SET v Enter Y Use Up Down to select the desired Salt Compen sation Value Press Enter once then press ESC to save th...

Page 32: ... Down to select 0 or 1 Press Enter once and the lower display will show Height Value Meter Use Up Down to select the desired Height value Press Enter once then press ESC to save the data and return to the normal display Typical setting is 0 meter 0 feet 7 12 Escape from the SETTING function Press ESC once to quit and return to the normal measurement display or press Enter ...

Page 33: ... The display will show the following screen alternately Use Up Down to select different data memory blocks 1 to 250 The meter can save up to a maximum of 16 000 data sets These data will be saved into a maximum of 250 memory blocks One Memory Block means The data that can be saved in one routine Data Logger procedure Please refer Chapter 6 3 Page 24 µS Transmit mode 1 158 4 µS Transmit mode xx xx ...

Page 34: ...om right display will show Sending Data When data output is completed the bottom right display will show Transmit mode again 4 Push ESC button to exit the data output function and return to the normal display Remarks To transmit the data to a computer connect an RS232 cable or USB cable and start the Data Logger software When transmitting data each transmission sends only one Memory Block at a tim...

Page 35: ...be downloaded to user s specific application An RS232 lead with the following con nection will be required to link the instrument to the PC serial port Meter PC 3 5 mm jack plug 9W D Connector Center Pin Pin 4 Ground shield Pin 2 2 2 K resister Pin 5 The 16 digit data stream will be displayed in the following format D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 ...

Page 36: ... 13 mS 14 ppm 19 pH 05 mV 18 mg L 07 O2 06 D10 Polarity 0 Positive 1 Negative D9 Decimal Point DP position from right to left 0 No DP 1 1 DP 2 2 DP 3 3 DP D8 to D1 Display reading D1 LSD D8 MSD For example If the display reading is 1234 then D8 to D1 is 00001234 D0 End Word 0D RS232 setting Baud rate 9600 Parity No parity Data bit no 8 Data bits Stop bit 1 Stop bit ...

Page 37: ...e with new batteries and slide on the cover Replace the retaining screw 4 Make sure the battery cover is tightly secured after changing the batteries 11 System Reset If the meter experiences problems such as CPU system is garbled for example the key button cannot be operated Then system RESET will fix the problem The system RESET proce dure is as follows Use a pin tool to push the System Reset But...

Page 38: ... Buffer solution 10 00 25 C blue 90 ml traceable to N I S T pH Buffer solution 4 00 25 C red 1 ltr traceable to N I S T pH Buffer solution 7 00 25 C yellow 1 ltr traceable to N I S T pH Buffer solution 10 00 25 C blue 1 ltr traceable to N I S T Accessories for conductivity Conductivity probe Calibration solution 1413 μS cm 500 ml traceable to N I S T Accessories for oxygen Oxygen sensor Spare memb...

Page 39: ...37 ...

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