User manual EUTECH INSTRUMENTS CYBERSCAN PC 510 PHCONDUCTIVITY METER

[. . . ] Instruction Manual PC 510 Bench pH/Conductivity Meter 68X090816 Technology Made Easy . . . Rev. 3 12/03 Preface Thank you for choosing the PC 510 pH and Conductivity bench meter series. The manual functions as a step-bystep operational guide to help you familiarise with the meter's features and as a handy reference guide. This instruction manual is written to cover as many anticipated applications and uses of the PC 510 bench meter as possible. [. . . ] The ATC indicator appears in the lower right hand corner to indicate Automatic Temperature Compensation. MEAS READY 345 2. 13 µS °C ATC Figure 20: During measurement NOTE: For conductivity manual temperature compensation, you must de-activate the temperature sensor built into the conductivity probe and set a manual temperature compensation. The ATC indicator will disappear from the display. 17 Instruction Manual PC 510 4. If necessary, ensure that the probe's yellow probe guard is attached. When dipping the probe into the sample, take care to ensure that the liquid level is above its upper steel band. If the READY indicator is selected on, it will appear when the reading is stable. Press the MODE key to toggle between conductivity, TDS and pH readings. NOTE: You can use the Conductivity Manual Ranging function to manually select a specific range in which your readings will appear. Taking measurements with READY indicator on If the READY indicator has been activated, the READY annunciator lights when the reading is stable *. Taking measurements with the auto endpoint feature selected on When a reading is stable for more than 5 seconds, the auto endpoint feature will automatically "HOLD" the reading. The "HOLD" indicator appears on the left side of the display. Switch the Auto endpoint features on or off in SETUP program P7. 1, see page 34 for instructions. 6. 2. 5 Using Auto and Manual Ranging Function (for conductivity & TDS) MEAS Auto-ranging Your meter automatically selects the range in which your readings appear. It will automatically select the most appropriate range, r 4, which is 0. 00 to 19. 99 mS. The secondary display on the LCD will momentarily display r 4 before it switches to measured temperature value. See Figure 20. 199. 9 µS °C ATC MEAS 1999 µS °C ATC MEAS 19. 99 mS °C ATC MEAS 12. 88 25. 5 mS °C ATC Figure 21: Auto-ranging feature 18 Instruction Manual PC 510 Manual-ranging The manual ranging function lets you select the specific range you want to work in. To select the desired measuring range manually, press the RANGE key while in measurement mode. The meter will lock on to the appropriate range and the "MEAS" indicator blinks. To re-select the Auto-ranging function, repeatedly press the RANGE key until the "MEAS" indicator appears without blinking. ENTER RANGE MEAS READY 1413 2. 23 µS °C ATC MEAS 1999 µS °C ATC MEAS READY 1413 2. 23 µS °C ATC Figure 22: Manual ranging NOTES: The meter will not let you manually select a range in which the reading will be over-range. You will have to reset the manual ranging function each time you turn the meter off. 19 Instruction Manual PC 510 7 HOLD FUNCTION This feature lets you freeze the display for a delayed observation. [. . . ] The calibration standard only needs to give the TDS value at a standard temperature such as 25 °C. To determine the conductivityto-TDS conversion factor use the following formula: Factor = Actual TDS ÷ Actual Conductivity @ 25 °C Definitions: · · Actual TDS: Value from the solution bottle label or as a standard you make using high purity water and precisely weighed salts. measured using a properly calibrated Both the Actual TDS and the Actual Conductivity values must be in the same magnitude of units. For example, if the TDS value is in ppm the conductivity value must be in µS; if the TDS value is in ppt the conductivity value must me in mS. [. . . ]