User manual EUTECH INSTRUMENTS ALPHA DO 500 DISSOLVED OXYGEN

[. . . ] Alpha DO 500 Transmitter Dissolved Oxygen ROSS and the COIL trade dress are trademarks of Thermo Fisher Scientific Inc. AQUAfast, Cahn, ionplus, KNIpHE, No Cal, ORION, perpHect, PerpHecT, PerpHecTion, pHISA, pHuture, Pure Water, Sage, Sensing the Future, SensorLink, ROSS, ROSS Ultra, Sure-Flow, Titrator PLUS and TURBO2 are registered trademarks of Thermo Fisher. 1-888-pHAX-ION, A+, All in One, Aplus, AQUAsnap, AssuredAccuracy, AUTO-BAR, AUTOCAL, AUTO DISPENSER, Auto-ID, AUTO-LOG, AUTO-READ, AUTO-STIR, Auto-Test, BOD AutoEZ, Cable-Free, CERTI-CAL, CISA, DataCOLLECT, DataPLUS, digital LogR, DirectCal, DuraProbe, Environmental Product Authority, Extra Easy/Extra Value, FAST QC, GAP, GLPcal, GLPcheck, GLPdoc, ISEasy, KAP, LabConnect, LogR, Low Maintenance Triode, Minimum Stir Requirement, MSR, NISS, One-Touch, One-Touch Calibration, One-Touch Measurement, Optimum Results, Orion Star, Pentrode, pHuture MMS, pHuture Pentrode, pHuture Quatrode, pHuture Triode, Quatrode, QuiKcheK, rf link, ROSS Resolution, SAOB, SMART AVERAGING, Smart CheK, SMART STABILITY, Stacked, Star Navigator 21, Stat Face, The Enhanced Lab, ThermaSense, Triode, TRIUMpH, Unbreakable pH, Universal Access are trademarks of Thermo Fisher. Guaranteed Success and The Technical Edge are service marks of Thermo Fisher. [. . . ] All new calibration values will automatically override existing calibration data. Make sure the unit of measurement is set to %. (Refer Section 5. 2 for switching unit of measurements). If you wish to abort the operation during DO calibration, press and simultaneously and the DO Transmitter reverts to measurement mode. 4. 3. 1 1-Point Calibration The 1-point calibration is done in air (100% oxygen saturation). CAL HOLD keys 1 ENT HOLD CAL 2 ENT READY HOLD 3 CAL % MEAS 4 % ENT READY °C ATC Measured value should be within +/- 50 % of high-point CAL HOLD + CAL % HOLD ERR 2 2 Calibration error occurs if measured value is not within +/- 50% of high-point during 1-point calibration 1 From measurement mode press CAL key to enter calibration mode as described in section 4. 1. Press ENT key to begin first calibration point. Select 1-point calibration: The display shows `1Pt CAL'. If `2Pt CAL' is shown, press or key to select `1Pt CAL'. Press ENT key to confirm the selection. 2 3 The buffer annunciator appears in LCD. Allow the electrode to equilibrate in air. The upper display shows the measured value of dissolved oxygen saturation. LCD shows `READY' annunciator when the reading is stable. NOTE: The transmitter does not accept the calibration and shows calibration error if the displayed (measured) value is not within 50% to 150%. 4 The calibration is completed. The DO Transmitter reverts to measurement mode. 17 Instruction Manual NOTES: x Alpha DO 500 If the displayed value is not within 50% to 150%, the Transmitter indicates a calibration error by showing `ERR' and blinking electrode annunciator. If this happens, press and keys together to return to measurement mode. Restart the calibration from Step1. x x To exit from calibration mode without confirming calibration, press and keys together. When calibrating with manual temperature compensation, the Transmitter automatically changes from preset `process temperature' to `calibration temperature'. After leaving calibration mode, the transmitter switches back to the `process temperature'. (Refer section 5. 4 for temperature settings) 4. 3. 2 2-Point Calibration: The 2-point calibration is carried out with standard DO buffer of 0% oxygen saturation and then in air (100% oxygen saturation) 1 ENT HOLD HOLD CAL CAL 2 READY HOLD CAL 4 % MEAS 5 % ENT READY °C ATC ENT CAL HOLD + 3 CAL % 2 2 ENT READY HOLD ENT HOLD ERR CAL % Measured value should be <10 % of high-point Calibration error occurs if measured value is <10% of high-point during 1st point calibration or if measured value is not within +/-50% of high-point during 2nd point calibration 1 From measurement mode press CAL key to enter calibration mode as described in section 4. 1. Press ENT key to begin first calibration point. Select 2-point calibration: The display shows `1Pt CAL'. or 2 3 The buffer annunciator appears in LCD. [. . . ] General Information 9. 1 Warranty This transmitter is supplied with a one-year warranty against significant deviations in material and workmanship from date of purchase and a six-month warranty for probe. Each instrument will have a warranty card with a specific serial number. The warranty card must be endorsed by the Authorized Distributor at the point of sale. If repair or adjustment is necessary and has not been the result of abuse or misuse within the designated period, please return ­ freight pre-paid ­ and correction will be made without charge. [. . . ]