User manual EUTECH INSTRUMENTS ALPHA PH 2000D PH CONTROLLER

[. . . ] Instruction Manual lpha-pH2000D pH and ORP Controller/Transmitter Technology Made Easy . . . 68X216855 Rev 1 12/04 Preface This manual serves to explain the use of the lpha-pH2000D series pH/ORP controller/transmitter. The manual functions in two ways, firstly as a step by step guide to help the user operate the instrument. This instruction manual is written to cover as many anticipated applications of the lpha-pH2000D pH/ORP controller/transmitter. If you have doubts in the use of the instrument, please do not hesitate to contact the nearest Eutech Instruments Authorised Distributor. [. . . ] You can conduct either a one-point or a two-point calibration: Press the ENT for two point calibration or the CAL key for one point calibration. The electrode indicator and CAL indicator both flash for a few seconds. The controller automatically adjusts the reading to match the buffer value. If one-point calibration was selected, the display will show the zero point in the lower section of the display and the slope (default or using previous two-point calibration) in the upper section of the display. If two-point calibration was selected, the lower section of the display will now show its next lower "pH" buffer. Use and keys to select the second buffer from one of these preset value: - pH 1. 68, pH 4. 01, pH 9. 00, pH 9. 18 and pH 10. 01. Remove the electrode from the first buffer, wash and then immerse it into the second buffer. Press the ENT key, the electrode indicator and CAL indicator will flash for a few seconds. After calibrating the second buffer value, the controller will automatically display the slope in the upper and the zero point in the lower section of the display. Note: You can also view the values for zero point and slope without calibration (see section 5. 5 for instruction). Note: If you entered the Calibration mode from the Setup mode, the controller will return to the setup menu. - 14 - Instruction Manual lpha-pH2000D Note: If there is a calibration error, the controller displays "CAL ERR". If this happens, push both and keys (escape) to restart the calibration beginning from Step 1. Note: When calibrating with manual temperature compensation, the controller automatically changes from the preset process temperature to the calibration temperature. After leaving the Calibration mode, the controller switches back to process temperature (for setting the calibration temperature and the process temperature, see Section 6. 3) - 15 - Instruction Manual lpha-pH2000D 5. 3 ORP-mV Calibration If controller is configured for ORP-mV measuring you can perform a one-point calibration. CAL HOLD CAL mV CAL HOLD mV MEAS R. mV 255 255 250 255 CAL 250 1. Note: If the display reads "CAL PH", see section 6. 9 for procedures on how to switch from pH to ORP-mV readings. The "CAL", buffer and electrode indicator appears on the display. The upper and lower display shows the current mV output of the electrode without any offset adjustment. Press the or key to adjust the upper display mV value to match your exact reading. The controller calculates the correction factor and returns to the Measurement mode. The "R. mV" annunciator (Relative mV) will be shown on the display indicating that the value displayed is the relative mV value of the default measurement. 5. 4 ORP -% Calibration If controller is configured for ORP-% measuring you can perform a calibration at two points using a low concentration sample (20%) and a high concentrate sample (80%). To calibrate the controller for ORP %: CAL HOLD CAL % HOLD CAL % MEAS C. 1 CAL C. 2 59. 0 CAL % 1. Note: If the display reads "CAL PH", see section 6. 9 for procedures on how to switch from pH to ORP-mV readings. [. . . ] Out-of-warranty products will be repaired on an exchange basis at cost. 10. 2 Packaging / Scope of delivery The instrument is packaged in a corrugated box with an instruction manual and the following accessories: Wall mount version: · · · Plug, nylon, red, 2 pcs PG13. 5, cable gland, 3 pcs Connectors, one each of 5 way (5. 08 mm), 9 way (7. 62mm), 13 way (3. 5mm), 8 way (3. 5mm) 10. 3 Return of goods Before returning goods for any reason whatsoever, Customer Service Dept. Items must be carefully packed to prevent damage during shipment, and insured against possible damage or loss. Eutech Instruments/ Oakton Instruments will not be responsible for any damage resulting from careless or insufficient packing. Warning: Shipping damage as a result of inadequate packaging is the user's/distributor's responsibility, whoever applicable. [. . . ]