PH METER
Contents
1. Power management AUTO POWER OFF Not available during Memory Record Function MANUAL POWER OFF or 7 AUTO POWER OFF DI SABLE The instrument has Auto Power Off function in order to prolong battery life The meter will shut off automatically if none of the buttons are pressed in approx 10 min To disable this function select the memory record function during the measurement by pressing the REC Button 3 3 Fig 1 8 RS232 PC SERI AL I NTERFACE The instrument features RS232 output via 3 5 mm Terminal 3 12 Fig 3 The signals output is a 16 digits data stream which can be utilized for user s specific application A RS232 lead with the following connection will be required to link the instrument with the PC serial interface 18 Meter PC 3 5 mm jack plug 9W D Connector Center Pitcdeccie a A Pin 4 Ground Shield ccccccccccseceseeeeeseeeees Pin 2 2 2K resistor Pin 5 The 16 digits data stream will be displayed in the following format D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 DO Each digit indicates the following status D15 Start Word D14 4 D13 When send the upper display data 1 When send the lower display data 2 D12 D11 Annunciator for Display C 01 F 02 PH 05 mV 18 mS 14 PPM 19 02 06 mg2. Measurement Range Resolution Accuracy PH 0 to 14 PH 0 01 PH 0 02 PH 2 d mV Oto 1999 mV 1mvV 0 5 2d PH accuracy is based on calibrated meter only Specification tests under the environment RF Field Strength less than 3 V M amp frequency less than 30 MHz only 3 FRONT PANEL DESCRI PTI ON amp g 3 13 3 14 3 12 3 15 Bro 9 Fig 2 Fig 3 3 1 Display 3 2 Power Button 3 3 REC Button 3 4 Hold Button 3 5 C F Button Up Button 3 6 PH mvV Button Left Button TEMP C Button CAL Button Down Button Battery Compartment Cover 10 PH BNC Input Socket 11 ATC Probe Input Socket 12 RS 232 Out Terminal 13 Stand 14 PH7 VR 15 PH 4 PH 10 VR 4 PH CALI BRATION PROCEDURE 4 1 Calibration Consideration The most ideal PH ELECTRODE generates 0 mV at PH 7 00 177 4 mV at PH 4 and PH 208 has been always calibrated with signals which simulate the most ideal PH ELECTRODE based on 25C ambient environment However not every PH ELECTRODE is as accurate as the most ideal one so calibration procedures are necessary to be done before the first time measurement In addition to the first time measurement users are also recommended to execute the calibration procedures to ens
3. probe TP 07 0 to 65 C pH PH7 PH4 and PH10 3 points calibration Calibration ensure the best linearity and accuracy Data hold Hold the current reading value on the display Memory Maximum and Minimum reading values can Recall be saved and retrieved by record function Power off Auto shut off saves battery life or manual off by push button Data Output RS 232 computer serial interface Overload 2 symbol on the display indication PH Optional Electrode Any PH electrode with BNC connector Operating 0 C to 50 C 32 F to 122 F Temperature Operating Humidity Max 80 RH Sampling Time Approx 0 8 second Power Supply 006P DC 9V battery Alkaline or Heavy duty type Power Current Approx DC 7 mA Weight 250 g 0 55 LB battery included Size meter 195 x 68 x 30 mm 7 6 x 2 6 x 1 2 inch Standard Instruction manual 1 PC Accessories Optional PH electrodes Probes amp General purpose PH electrode PE 03 Accessories Ref page 20 General purpose PH electrode PE 11 Professional PH electrode PE O1 Spear tio PH electrode PE O4HD PE O6HD ATC temp probe TP 07 PH electrodes Temp Probe PE 03K7 ORP electrode ORP 14 Hard carrying case CA 06 RS232 cable UPCB 02 RS232 cable USB 01 Application Software SW U801 WIN 2 2 Electrical Specifications 23 5 C
4. adjusted Press the TEMP C Button 3 7 Fig 1 once again to adjust the PH 7 default calibration value The upper display will show the values of 7 00 and the lower display will show the PH 7 default calibration value PH 7 00 07 12 Use the Up Button 3 5 Fig 1 and the Down Button 3 8 Fig 1 to adjust the PH 7 default calibration value The adjustment range of PH 7 default calibration value is limited within 7 00 20 PH d Adjust the PH 10 Default Value When the PH 7 default calibration value be adjusted Press the TEMP C Button 3 7 Fig 1 once again to adjust the PH 10 default calibration value 12 The upper display will show the values of 10 00 and the lower display will show the PH 10 default calibration value PH 10 00 10 02 Use the Up Button 3 5 Fig 1 and the Down Button 3 8 Fig 1 to adjust the PH 10 default calibration value The adjustment range of PH10 default calibration value is limited within 10 00 20 PH e Finish the adjustment When the PH 10 default calibration value be adjusted press the TEMP C Button 3 7 Fig 1 once again to finish the manual temperature calibration procedures and return to the measuring mode Consideration If you want to skip any procedures above just press Temp C Button 3 7 Fig 1 Above PH defau
5. 2 3 mm dia x 160 mm Epoxy body 1 13 pH PH ELECTRODE Model PE 11 General purpose laboratory amp field usage 10 mm dia x 130 mm Epoxy body 1 13 pH 0 14 pH typical PH ELECTRODE Professional laboratory amp Model PE 01 field usage 9 5 mm dia x 130 mm Epoxy body 0 14 pH SPEAR TIP The Spear Tip pH electrode is PH ELECTRODE Model PE O4HD PE O6HD perfect for those pH measurements in applications where sample piercing is required Meat sausage and cheese are ideal applications The electrode features a very durable glass measuring spear packaged in a rugged virtually unbreakable epoxy body Range 0 to 14 pH PE O4HD Range 1 to 13 pH PE O6HD BUFFER SOLUTION PH 07 PH 7 00 standard buffer solution for calibration purpose BUFFER SOLUTION PH 04 PH 4 00 standard buffer solution for calibration purpose RS232 cable RS232 cable for connecting between UPCB 02 the meter amp the computer SOFTWARE Windows version application software SW U801 WIN applies as the performance of data logging system amp data recorder 21 0604 PH208
6. 3 Fig 1 once the REC Max symbol along with the maximum value will appear on the display If you intend to delete the maximum value just press the Hold Button 3 4 Fig 1 for a while then the display will show the REC symbol only amp execute the memory function continuously b Press the REC Button 3 3 Fig 1 again the REC Min symbol along with the minimum value will appear on the display If you intend to delete the minimum value just press the Hold Button 3 4 Fig 1 for a while then the display will show the REC symbol only amp execute the memory function continuously c To exit the memory record function just press the REC button for 2 seconds at least The display will revert to the current reading 16 6 6 Following are the block diagrams for quick measuring procedures Calibration Set the Single point calibration Power manual PH 7 CAL ON temp _ values Two points calibration or PH 7 CAL amp plug PH4 PH10 SLOPE ATC probe PH measuring procedures j Setting the Manual temp compensation values on front panel Power ON or Automatic temperature compensation by optional ATC probe Optional measuring procedures Aa2ama2amnecn rmea DATA HOLD MEMORY RECORD RS232 OUTPUT Max Min 17
7. L 07 D10 Polarity 0 Positive 1 Negative D9 Decimal Point DP position from right to the left 0 No DP 1 1 DP 2 2 DP 3 3 DP D8 to D1 Display reading D8 MSD D1 LSD For example If the display reading is 1234 then D8 to D1 Is 00001234 DO End Word 19 RS232 setting Baud rate 9600 Parity No parity Data bit no 8 Data bits Stop bit 1 Stop bit 9 BATTERY REPLACEMENT 1 When the left corner of LCD display show pee it is necessary to replace the battery However in spec measurement may still be made for several hours after low battery indicator appears 2 Slide the Battery Cover 3 14 Fig 1 away from the instrument and remove the battery 3 Replace with 9V battery Alkaline or Heavy duty type and reinstate the cover 4 Make sure the battery cover is secured after changing the battery 10 OPTI ONAL PROBES amp ACCESSORIES ATC ATC Automatic Temperature PROBE Compensation Probe for PH Model TP 07 function Measurement Range C 0 C to 65 C F 32 F to 149 F CARRYING CASE Hard carrying case CA 06 ORP ELECTRODE Select to the mV function plug the Model ORP electrode into the BNC socket to ORP 14 become a professional ORP oxidation reduction potential Meter 20 PH ELECTRODE Model PE 03 General purpose laboratory amp field usage 1
8. PH METER Model PH 208 g Your purchase of this PH METER marks a step forward for you into the field of precision measurement Although this PH METER is a complex and delicate LMatron PH 208 nn instrument its durable ae structure will allow many years of use if proper Operating techniques are developed Please read the following instructions carefully and always keep this manual within easy reach PH METER pH mV a V UKAS QUALITY MANAGEMENT 005 OPERATI ON MANUAL TABLE OF CONTENTS Li FEATURES aeaa aa a aaa E 2 SPECIFICATIONS ir inyana pen aiaa 3 FRONT PANEL DESCRIPTION ccce 4 PH CALIBRATING PROCEDURE ccce 4 1 Calibrating Consideration 4 2 Requiring Equipment for calibration 4 3 Two Points Calibration 4 4 Signal Point Calibration 4 5 OUNENS setae erie 5 PH TEMPERATURE COMPENSATION 5 1 Manual temperature compensation 5 2 Automatic temperature compensation 6 MEASURING PROCEDURE eee 6 1 PH Measurement 6 2 MV Measurement 6 3 Temp Measurement 7 AUTO POWER DISABLE 8 RS232 PC SERIAL INTERFACE 9 BATTERY REPLACEMENT 10 OPTIONAL PROBES amp ACCESSORIES cee 1 FEATURES k E EYE K Professional PH mV METER PH range 0 to 14 PH x 0 01 PH mV range 1999 mV to 1999 mV The instrument is with mV millivolt function for mV measurement cooperate with opti
9. V Button 3 6 Fig 1 to select the PH function with a PH symbol on the display 3 TEMP C Button 3 7 Fig 1 is used to adjust the following values a Temperature compensation value b PH 4 Default calibration value c PH 7 Default calibration value d PH 10 Default calibration value 10 a Adjust the temperature compensation value J Press the TEMP C Button 3 7 Fig 1 first The upper display will show the measured PH values the lower display will show the manual temperature compensation value PH 7 91 026 1 Use the Left Button 3 6 Fig 1 Up Button 3 5 Fig 1 and the Down Button 3 8 Fig 1 to adjust the manual temperature compensation value b Adj ust the PH 4 default calibration value j When the manual temp compensation values be adjusted Press the TEMP C Button 3 7 Fig 1 once again to adjust the PH 4 default calibration value The upper display will show the values of 4 00 and the lower display will show the PH 4 default calibration value PH 4 00 04 03 11 Use the Up Button 3 5 Fig 1 and the Down Button 3 8 Fig 1 to adjust the PH 4 default calibration value The adjustment range of PH4 default calibration value is limited within 4 00 20 PH c Adjust the PH 7 default value When the PH 4 default value be
10. lt calibration values you set will become the default value when you execute the PH Calibration Procedure It is very convenient for user when PH 4 00 PH 7 00 and PH 10 00 buffer solution are not available 13 5 2 Automatic temperature compensation 1 Plug the Optional ATC Temp Probe TP 07 into the ATC Probe Input Socket 3 11 Fig 1 2 Power on the instrument by pressing the Power Button 3 2 Fig 1 3 Press the PH mV Button 3 6 Fig 1 to select the PH function with a PH symbol on the display 4 Place the Temp Probe into the solution and then temperature will be compensated automatically for PH measurement 6 MEASURI NG PROCEDURE 6 1 PH Measurement Whenever the calibration procedures are recommended to be done before PH measurement 1 Connect the PH ELECTRODE to the PH BNC Input Socket 3 10 Fig 1 2 Power on the instrument by pressing the Power Button 3 2 Fig 1 3 Press the PH mV Button 3 6 Fig 1 to select the PH function with a PH symbol on the display 14 4 If the operating is under the Manual temperature compensation then please refer to the above 5 1 calibration procedures If the operating is under the Automatic temperature compensation then please refer to the above 5 2 calibration procedures 5 Place the electrode into the solution then the instrument will have the PH value o
11. mbol on the display 4 Set the Manual temperature compensation value to 25 C refer to 5 1 calibration procedures page 10 5 Place the electrode into the standard solution PH7 PH4 or PH10 then the instrument will have the PH value on the display 6 For measuring the PH7 standard solution adjust the PH 7 VR 3 14 Fig 3 until the display value within PH6 to PH8 For measuring the PH4 standard solution adjust the PH 4 VR 3 15 Fig 3 until the display value within PH3 to PH5 For measuring the PH10 standard solution adjust the PH 10 VR 3 15 Fig 3 until the display value within PH9 to PH11 7 The following calibration procedures will be same as 4 3 page 6 and 4 4 page 8 5 PH TEMPERATURE COMPENSATION Enable the meter to gain high accuracy measuring results from different kinds of solution the temperature compensation calibration procedures are necessary to be executed Manual temperature compensation calibration procedures please refer to 5 1 See below Automatic temperature compensation calibration procedures please refer to 5 2 Page 14 5 1 Manual temperature compensation procedures Before the manual temperature compensation calibration procedures please make sure there are no ATC probe TP 07 in the Optional Probe Input Socket 3 11 Fig 1 1 Power on the instrument by pressing the Power Button 3 2 Fig 1 2 Press the PH m
12. n the display 6 After the measurement please rinse the electrode with distilled water 6 2 mV Measurement The instrument build in mV millivolt measurement function which enable you to make ion selective ORP oxidation reduction potential and other precise mV measurements Press the PH mV Button 3 6 Fig 1 to select the mV function with a mV symbol on the display 6 3 Temp Measurement 1 Plug the Optional ATC Temp Probe TP 07 into the Optional Probe Input Socket 3 11 Fig 1 2 If you intend to measure C then press the C Button 3 5 Fig 1 and select the C unit If you intend to measure F then press the C Button 3 5 Fig 1 and select the F unit 3 Place the Temp Probe into the solution and the instrument will have the temperature value on the display 15 j 6 4 Data Hold Press the Hold Button 3 4 Fig 1 will hold the measured value amp the LCD will indicate a HOLD symbol on the display during the measuring Press the Hold Button again to exit the data hold function 6 5 Data Record Max Min reading The data record function records the maximum and minimum readings Press the REC Button 3 3 Fig 1 to start the Data Record function and there will be a REC symbol on the display With the REC symbol on the display a Press the REC Button 3
13. onal ORP probe to be a professional ORP meter Wide manual temperature compensation adjustment can be easily operated by push button on the front panel Optional ATC Automatic Temp Compensation probe is available for PH measurement Microprocessor circuit assures high accuracy and reliable performance Large LCD dual function display Records Maximum and Minimum readings with recall Data hold Auto shut off saves battery life Powered by 006P DC 9V battery RS 232 computer serial interface C or F can be converted by push button on the front panel PH calibration is easily to be done by push button on the front panel Using the durable long lasting components and a strong lightweight ABS plastic housing case PH function with high input impedance avoids measuring error Wide applications water conditioning aquariums beverage fish hatcheries food processing photography laboratory paper industry plating industry quality control school amp college 2 SPECI FI CATIONS 2 1 General Specifications Circuit Custom one chip of microprocessor LSI circuit Display 51 mm x 32 mm dual function LCD display 15 mm 0 6 digit size Measurement PH 0 to 14 PH mV 1999 mV to 1999 mV Input 10 12 ohm Impedance Temperature Manual 0 to 100 C be adjusted by Compensation push button on front panel for pH Automatic With the optional TEMP measurement ATC
14. upper display shows texts of CAL and the lower display shows the default calibration value UI 7 CAL 4 00 The texts CAL will flash for around 5 seconds After that the meter calibrate itself automatically The upper display will show the calibrated value the lower display will show the temperature value 4 00 25 0 6 Rinse the electrode with distilled water again 7 Repeat above 4 to 5 procedures two times at least 8 The instrument and electrode are now finished the TWO POINTS CALIBRATION amp ready for the measurement 4 4 Signal Point Calibration If PH4 and PH10 buffer solution are not available single point PH7 calibration can be executed from procedures of 4 3 1 to 4 However for more accurate measuring result and linearity two points calibration is always recommended 4 5 Others Above calibration procedures effect only when reading value within 1 PH of the calibration point However if the reading value beyond 1 PH of PH 7 gt PH8 lt PH6 I PH of PH 4 gt PH5 lt PH3 I PH of PH 10 gt PH11 lt PH9 the calibration procedures are 1 Connect the PH ELECTRODE to the PH BNC Input Socket 3 10 Fig 1 2 Power on the instrument by pressing the Power Button 3 2 Fig 1 3 Press the PH mV Button 3 6 Fig 1 to select the PH function with a PH sy
15. ure the high accuracy measurement 4 2 Required Equipment for Calibration 1 PH ELECTRODE optional 2 PH buffer solutions optional 4 3 Two Points Calibration Procedure 1 Power on the instrument by pressing the Power Button 3 2 Fig 1 2 Press the PH mV Button 3 6 Fig 1 to let meter be operated under the PH function with a PH symbol on the display 3 Adjust the Temperature Compensation Value to make it same as the temperature value of the pH buffer solution Manual temperature compensation value adjustment procedure please refer to 5 1 Page 10 Automatic temperature compensation value adjustment procedure please refer to 5 2 Page 14 4 PH 7 calibration j Connect the PH ELECTRODE with the BNC socket 3 10 Fig 1 and immerse the electrode in the PH7 buffer solution Press the CAL Button 3 8 Fig 1 then the upper display shows texts of CAL and the lower display shows the default calibration value CAL 7 00 The texts CAL will flash for around 5 seconds After that the meter calibrates itself automatically The upper display will show the calibrated value the lower display will show the temperature value 7 00 25 0 PH 4 or PH 10 calibration j Rinse the electrode with distilled water Immerse the electrode in the PH4 buffer solution or PH10 buffer solution Press the CAL Button 3 8 Fig 1 then the
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