User manual EUTECH INSTRUMENTS ALPHA DO 2000 DISSOLVED OXYGEN CONTROLLERTRANSMITTER

[. . . ] Instruction Manual lpha-DO2000 Dissolved Oxygen Controller/Transmitter Technology Made Easy . . . 68X216835 Rev 0 05/04 Preface This manual serves to explain the use of the lpha DO 2000 Series. The manual functions in two ways, firstly as a step by step guide to help the user operate the instrument, and secondly as a handy reference guide. This instruction manual is written to cover as many anticipated applications of the lpha DO 2000 as possible. If you have any doubts concerning the use of the instrument, please do not hesitate to contact the nearest Eutech Instruments Authorised Distributor. [. . . ] Take the probe out of the zero oxygen solution and immerse it in a solution with a higher concentration of dissolved oxygen. Use or keys to adjust the 14 Instruction manual lpha DO 2000 displayed value to the correct value. Press the ENT key to accept the value and the status of the probe is displayed. Note: If the displayed value is not within ±50% of the high point value, the controller will not accept the high-level calibration and retains the previous calibration values. Note: If there is a calibration error, the controller displays "CAL ERR" and exits to the measurement mode (for direct access calibration mode) or to the setup menu (for calibration mode accessed via Setup mode). After calibration, the controller automatically displays the condition of the probe in the upper display and the temperature in the lower display. You can view these values without calibration --- see Section 5. 4 for instruction. Press the ENT key (or CAL key) to return to the measurement mode (for direct access calibration mode) or to the setup menu (for calibration mode accessed via Setup mode). 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) 5. 3 Dissolved oxygen Calibration in % saturation of oxygen A one-point calibration is done in air. This transmitter features a one-point or two-point calibration for dissolved oxygen. Displayed value should be within +/- 50 % of high point SETUP READY HO LD SETUP HO LD CAL DO ENT SETUP HO LD 1-PT CAL ENT CAL 90. 0 100. 0 ENT CAL % ENT HO LD CAL 1. 00 24. 5 CAL ENT MEAS o C CAL 100. 0 24. 5 % ENT C ATC o SETUP HO LD 2-PT CAL ENT SETUP READY HO LD 2. 00 0. 0 % ENT SETUP HO LD ERR CAL ERR ENT Displayed value should be < 10% of high point Calibration error occurs if calibration value is > 10% or > +/- 50% of high point during 1 or 2 point calibration 1. Use or keys to select one point "1-PT CAL" or two point "2-PT CAL" dissolved oxygen calibration. For One-Point Calibration, only calibration at the 100% level is possible. Press the ENT key to accept the high level calibration (100%) and the controller displays the status of the probe. Note: If the displayed value is not within ±50% of the high point value, the controller will not accept the high-level calibration and retains the previous calibration values. 15 Instruction manual lpha DO 2000 Note: If there is a calibration error, the controller displays "CAL ERR" and exits to the measurement mode (for direct access calibration mode) or to the setup menu (for calibration mode accessed via Setup mode). For Two-Point Calibration, calibration is carried out at 0% saturation first. When the reading is stable, the "READY" annunciator comes on. Note: If the displayed value is > 10% of the high point value, the controller will not accept the zero calibration and retains the previous calibration values. Note: If there is a calibration error, the controller displays "CAL ERR" and exits to the measurement mode (for direct access calibration mode) or to the setup menu (for calibration mode accessed via Setup mode). If the calibration is successful, the controller switches to the second point, which is the 100% saturation of dissolved oxygen. Take the probe out of the zero oxygen solution, rinse in clean water, dry it and then calibrate in air. Press the ENT key to accept the high-level calibration (100%) and the status of the probe is displayed. [. . . ] Items must be carefully packed to prevent damage during shipment, and insured against possible damage or loss. Eutech 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. Please follow the guidelines below before shipment. 10. 4 Guidelines for returning unit for repair Use the original packaging material if possible when shipping the unit for repair. [. . . ]