User manual EUTECH INSTRUMENTS CYBERSCAN PH 10002500 PHION METER

[. . . ] Instruction Manual pH 1000/ pH 2500 Bench pH/Ion Meter 68X090800 Rev. 5 07/03 Technology Made Easy . . . Instruction Manual pH 1000/ 2500 Instruction Manual pH 1000/ 2500 Preface Thank you for choosing the pH 1000/ 2500 bench meter series. This manual serves to explain the use of the pH 1000/ 2500 Bench meter. The manual functions in two ways, firstly as a step-by-step operational guide to help you familiarize with the meter's features and functions. [. . . ] To perform temperature calibration, press MODE key to select the temperature mode. Press SET TEMP to set the desired temperature to match that measured value. Select the temperature value using the numeric keys. annunciator flashes for one second and disappears. The meter reverts to the pH measurement mode. The temperature is now set to the temperature selected. Note: Temperature can only be set between -9. 9 oC to 110. 0 oC. 2. Press YES to confirm the selected temperature. The CON IMPORTANT : Always conform to the temperature limits of the sensor probe (e. g. epoxy pH probes with a built in temperature sensor should not be used or calibrated at temperatures above 80 oC. ) If unsure, check with specifications of the probe. 13 Instruction Manual pH 1000/ 2500 7 MEASUREMENT: READY, CONTINUOUS AND HOLD Measurement in the READY Mode 7. 1 The READY annunciator appears the readings are stable at the top left corner of the LCD. The reading is held as long as the variation of readings is within a range. For mV, tolerance is +/- 0. 3 mV < 400 mV and +/- 1. 2 mV > 400 mV). 1. Rinse the pH electrode using de-ionized or distilled water prior to use. This will remove impurities that have adhered on the electrode body. Switch to the MEAS mode for measurement. The MEAS mode is activated whenever the meter is switched on. If you are in the calibration mode, press CAL/MEAS key to revert to the measurement mode. the electrode is completely immersed into the sample. When reading stabilizes, the READY annunciator displays. 2. 3. Dip the electrode into the sample ensuring that the glass bulb of NOTE: If the READY indicator is turned off, the readings are instantaneous readings. Allow readings to stabilize before reading for highest accuracy. 7. 2 Measuring in the Continuous Mode As the READY function provides stable readings, the continuous mode provides instantaneous readings for faster operation. Continuous mode readings, however, may not be as stable. [. . . ] After each series of measurements, wash the electrode and reference junction in de-ionized water. If using a refillable electrode, close the refilling hole by placing its rubber sleeve or stopper plug into its position. Store the electrodes as mentioned above. Electrode Cleaning Electrodes that are mechanically intact can often be restored to normal performance by one or a combination of the following options. Salt deposits which are normal on all electrodes Dissolve the deposit by immersing the electrode in tap water for 10 to 15 minutes. [. . . ]