Related Manuals for ProMinent Portamess 911 pH
Summary of Contents for ProMinent Portamess 911 pH
- Page 1 Instruction Manual Portamess 911 pH ProMinent Dosiertechnik GmbH • D-69123 Heidelberg • Germany...
- Page 2 ProMinent Dosiertechnik GmbH Im Schuhmachergewann 5–11 D-69123 Heidelberg Postfach 10 17 60 D-69007 Heidelberg Telephone: +49 (06221) 842-0 Fax: +49 (06221) 842-419 info@prominent.de www.prominent.de We reserve the right to make technical changes. TA–193.102–PME01 121101 Software version: 3.x...
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Page 3: Safety Precautions
Safety Precautions Be sure to read and observe the following re- quirements! Whenever it is likely that the protection has been impaired, the meter shall be made inoperative and secured against unintended operation. The protection is likely to be impaired if, for example: the meter shows visible damage the meter fails to perform the intended measurements after prolonged storage at temperatures above 70 °C... -
Page 4: Information On This Instruction Manual
Information on this Instruction Manual Italics are used for texts which appear in the Portamess 911 pH display. Bold print is used to represent keys, e.g. cal. Display examples keys whose functions are explained are frequently shown in the left-hand column. Notes provide important information that should be strictly Note followed when handling the meter. -
Page 5: Table Of Contents
Contents Safety Precautions ..........Information on this Instruction Manual . - Page 6 Contents VI...
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Page 7: The Model 911 Ph
1 The Model 911 pH Package Contents Please check the completeness of the package after un- packing. The package should include: Portamess 911 pH (ready for operation) Carrying strap This instruction manual Short instructions in German, English and French Field case Short Description of Meter ... - Page 8 The Sensoface electrode monitoring system checks the connected electrode and provides information on its state. Only three alkaline AA batteries are required for uninter- rupted operation for approx. 2,000 hours. The Model 911 pH 2...
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Page 9: Operation
2 Operation Meter Design meas on/off Portamess Electrode connection Reference electrode 2, 3 Temperature probe connection Unused Electrode container Operation 3... -
Page 10: Display
Display Electrode Rinse response Wait electrode time Press cal Battery Stir buffer empty solution Measure- Senso- ment face symbol Temperature detection using Pt1000/ Zero/ slope Error Manual message Main temperature Secondary display detection display Keypad Pressing on/off switches the meter on or off. When the ... -
Page 11: Sensoface Electrode Monitoring
For manual temperature specification (no temperature probe connected), the temperature is set using During buffer selection, you can select the buffer set using Pressing cal + on/off when the meter is switched off, on/off activates buffer selection. When pressing two keys at the same time, make sure that Note the key shown at the left is pressed first. - Page 12 Connection Connection ......Socket assignment Combination electrode ......Single measuring electrode .
- Page 13 Note The temperature probe is only recognized during the power-on procedure after pressing on/off. The meter can also be switched on with meas. However, Note in this case only a short test is performed and the tempera- ture probe is not determined. The meter assumes that the last temperature probe determined is used.
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Page 14: Configuration
Configuration Note If you calibrate using the ProMinent buffer set, generally you do not have to change the configuration. The following basic settings can be changed in the configu- ration: Automatic calibration (Calimatic on or off (manual), buffer set for automatic... - Page 15 2.00 4.01 7.00 9.21 BUFFER –01– Mettler Toledo technical buffers (former Ingold) pH 2.00 4.01 7.00 9.21 BUFFER –02– ProMinent pH 2.00 4.00 7.00 9.00 BUFFER –03– DIN 19 267 pH 1.09 4.65 6.79 9.23 12.75 BUFFER –04 Ciba (94) pH 2.06 4.00 7.00 10.00...
- Page 16 For manual buffer specification (AutCal off), the pH value of the buffer solution must be entered for the correct tem- perature. This allows calibration using any other buffer solution. Three-point You can choose whether you want to perform three-point calibration calibration in addition to one- or two-point calibration.
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Page 17: Calibration
Calibration By calibration the pH meter is adjusted to zero point and slope of the electrode used. For calibrations and measurements at temperatures other Note than room temperature, the following must always be ob- served: Not only the buffer solution and the measured medium, but also the electrode must be brought to the corresponding temperature before the calibration is started or the mea- sured value is read. - Page 18 During buffer recognition the lower line indicates the tem- perature. The hour glass flashes. The nominal value of the recognized buffer solution is dis- played for approx. 5 s. Electrode and temperature probe must remain in the first buffer solution until the display prompts for the second buffer.
- Page 19 With three-point calibration turned on (3P-CAL On), you can now evaluate a third buffer solution. For two-point calibration, press meas to terminate the calibration. The meter then shows the newly determined zero point in the main display and the new slope in the lower display and returns to pH measuring mode.
- Page 20 The electrode stability is checked and the measured mV value displayed. Stability check can be overridden with cal. However, this reduces calibration accuracy. Calibration with the first buffer is complete. Remove elec- trode and temperature probe from the first buffer solution and rinse off both thoroughly.
- Page 21 At the end of the calibration the zero point and slope (based on 25 °C) of the electrode are displayed. Then the meter switches back to measuring mode. Converting slope % –> mV/pH mV/pH mV/pH 46.2 53.9 46.8 54.5 47.4 55.1 48.0 55.6...
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Page 22: Measurement
Measurement Pressing meas accesses the measuring mode from all Measuring functions. In measuring mode the main display indicates mode the measured variable and the secondary display the tem- perature. The measured variable is selected with meas. You can choose between the following variables: meas Electrode potential [mV] The response times of electrode and temperature probe... -
Page 23: Troubleshooting And Maintenance
3 Troubleshooting and Maintenance Sensoface Electrode Monitoring The automatic Sensoface electrode monitoring system provides information on the electrode state. It evaluates zero point, slope and response time of the electrode. The deterioration of the electrode condition is signified by Note ... - Page 24 This Sensoface display provides information on the elec- SLOPE trode zero point and the slope. ZERO Zero and slope of the electrode are still okay, however the electrode should be maintained or replaced soon. Zero and/or slope of the electrode have reached val- ues which no longer ensure proper calibration.
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Page 25: Error Messages
Error Messages If there are problems with a sensor, an error message ap- Sensor pears and the measured-value display flashes. problems ERROR 1 Problem with the electrode Possible causes: Electrode defective Too little electrolyte in the electrode Electrode not connected Break in electrode cable Wrong electrode connected Measured pH less than -2 or greater than +16... - Page 26 Note When changing the temperature probe (also for electrodes with integrated temperature probe), note that the tempera- ture probe type (Pt 1000/NTC 30 kW) is only recognized when the meter is switched on with on/off. If errors occur during calibration, or if the determined elec- Calibration trode data are outside the valid range, an error message error...
- Page 27 Wrong buffer temperature set (for manual temperature specification) ERROR 8 The meter has recognized two identical buffer solutions. This message is only displayed during calibration. Calibration must be repeated with fresh buffer solutions. Possible causes: Same or similar buffer solution was used for both cal- ibration steps Buffer solutions unusable or falsified Electrode defective...
- Page 28 Possible causes: Electrode defective or dirty No electrolyte in the electrode Electrode cable insufficiently shielded or defective Strong electric fields influencing the measurement Major temperature fluctuation of the buffer solution No buffer solution or extremely diluted ERROR 18 If the meter determines an error during the self-test, this error message appears: Configuration data defective Possible causes: Configuration or calibration data are defective.
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Page 29: Maintenance
Maintenance Changing If the battery symbol appears in the display, the batteries batteries need replacement. However, you can still use the meter for a few days. When the battery voltage decreases further, the meter switches off. Close the meter protection cover and remove the elec- trode container. -
Page 30: Appendix
Appendix Accessories Available Ref. No. Electrode container, 5 pieces (for leak- 1008716 proof storage of pH electrode) Quality buffer solutions pH pH 4.0 50 ml 506251 pH 7.0 50 ml 506253 pH 9.0 50 ml 506254 KCl solution,3-molar 250 ml 791440 Cleaning solution 791443... -
Page 31: Specifications Portamess 911 Ph
Specifications Portamess 911 pH Ranges -2.00 to +16.00 -1,300 to +1,300 °C: -20.0 to +120.0 Display LC display 35 x 67 mm, character height 15 mm Measurement approx. 1 s Cycle Measurement Error < 0.01 (± 1 count) < 0.1 % of meas. value ± 0.3 mV °C: <... - Page 32 Enclosure Material: PA, IP 66 protected, with integrated electrode container Dimensions 133 x 160 x 30 mm (w x h x d) Weight approx. 560 g including batteries Appendix 26...
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Page 33: General Information On Measurement
4 General Information on Measurement Note The chapter “General Information on Measurement” pro- vides a summary of the most important points to be ob- served during pH measurement. You can skip this chapter if you are sufficiently familiar with the practice of pH mea- surement. - Page 34 Calimatic In the Portamess 911 pH the chart values of various automatic buffer sets are stored for the correct temperatures. Simply calibration select and enter the buffer set once when commissioning the meter (see Pg. 9). Then the patented Calimatic will calibrate the meter at the press of a key.
- Page 35 Calibration The calibration interval is highly dependent on the condi- intervals tions under which measurements are taken. As a result, no generally valid interval can be given here. However, the calibration can be repeated frequently at the beginning. If the calibration values (electrode zero and slope) show only minor differences, the time between cal- ibrations can be increased.
- Page 36 Design of a combination elec- trode with liquid electrolyte filling hole reference electrolyte junction glass membrane Two buffer solutions are required for a two-point calibra- Buffer tion. The pH values of the buffer solutions should differ by solutions at least two pH units and bracket the expected measured value.
- Page 37 Today combination electrodes are commonly used due to Electrodes the simpler handling involved. When using combination electrodes, ensure a symmetric design when interconnecting: The dissipation systems of glass and reference elec- trodes have the same potential (e.g. both Ag/AgCl, KCl 3 mol/l, AgCl saturated or both “calomel“, KCl satu- rated).
- Page 38 Do not rub the electrode dry with a cloth or fleece, as this will cause electric charging which may later result in incorrect measurements or even make them impossible. The temperature compensation takes the temperature Temperature dependency of the electrode slope into account. Reference compen- temperature for zero and slope of the meter is 25°C.
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Page 39: Glossary
Glossary Auto To protect the batteries, the meter switches off automati- switch-off cally after one hour when not operated for a longer period. Contains selected buffer solutions which can be used for Buffer set automatic calibration with the Calimatic . - Page 40 meas This key is used to return to measurement mode from all other levels. In measuring mode it switches between mV and pH. German committee for measurement and control stan- NAMUR dards in the chemical industry One-point Calibration with which only the electrode zero point is taken into consideration.
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Page 41: Index
Index , 17 configuration, 8 configuration menu, 8 connection, electrode, 5 accessories available, 24 connection assignment, 6 auto switch–off, definition, 33 automatic calibration, 28 diagnostics, Sensoface, 17 display, 4 battery replacement, 23 buffer set electrode monitoring, Sensoface, definition, 33 selection, 9 electrode slope, description, 33 buffer solution, 30 definition, 33... - Page 42 measurement, general, 27 safety precautions, III measuring mode, 16 Sensoface, 5, 17 messages, Sensoface, 17 definition, 34 meter design, 3 diagnostic, 17 messages, 17 mV measurement, 16 short description, 1 slope, definition, 34 NAMUR, definition, 34 smiley, 17 specifications, 25 one–point calibration, 12, 14 start–up, 5 definition, 34...
- Page 44 Addresses and delivery information from the manufacturer: ProMinent Dosiertechnik GmbH Im Schuhmachergewann 5–11 D-69123 Heidelberg Postfach 10 17 60 D-69007 Heidelberg – Germany Phone: +49 (06221) 842-0 Fax: +49 (06221) 842-419 info@prominent.de www.prominent.de...
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