User manual EUTECH INSTRUMENTS ALPHA DO 500

[. . . ] 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. [. . . ] (Refer section 5. 4 for temperature settings) 4. 2. 2 2-Point Calibration The 2-point calibration is carried out at Low-point (zero dissolved oxygen solution) and then at high-point using 8. 24 mg/l of dissolved oxygen solution. CAL HOLD 1 ENT HOLD CAL 2 READY HOLD CAL 4 ENT mg/l READY MEAS 5 mg/l °C ATC ENT CAL HOLD 2 2 ENT READY HOLD + 3 CAL ENT mg/l HOLD ERR CAL mg/l 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. The lower display shows `LO', indicating the low-point is being calibrated. Immerse the electrode in a low level of dissolved oxygen solution (0. 0 mg/l). The upper display shows the measured value of dissolved oxygen of the solution. Press ENT key to confirm the reading. 15 Instruction Manual Alpha DO 500 NOTE: The transmitter proceeds to the second point of calibration if the displayed reading is less than 10% of the high-point value. NOTE: The transmitter does not accept the calibration and shows calibration error if the displayed (measured) value is more than 10% of the high-point value. 4 If the low-point calibration is successful, the Transmitter proceeds to the second point. Take the electrode out of low oxygen solution and immerse it in a higher dissolved oxygen concentration (8. 24 mg/l) solution. The upper display shows the measured value of dissolved oxygen of the solution. NOTE: The transmitter does not accept the calibration and shows calibration error if the displayed (measured) value is more than 50% of the high-point value. 5 The calibration is completed. The DO Transmitter reverts to measurement mode. NOTES: x If the displayed value is more than r10% of the high-point value, 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. 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) 16 Instruction Manual Alpha DO 500 4. 3 Calibration in% Saturation of Oxygen The DO Transmitter is capable of calibrating up to 2 points for dissolved oxygen. All new calibration values will automatically override existing calibration data. 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 confirm the selection. 2 3 The buffer annunciator appears in LCD. The upper display shows the measured value of dissolved oxygen saturation. 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. [. . . ] List of Accessories 7. 1 Thermo Scientific Transmitter Replacement and Accessories Item Description Alpha DO 500 Transmitter General Purpose Epoxy-body Dissolved Oxygen Electrode with PT100, range: 0. 50 - 20 ppm, 5m cable length, tinned open-ended Special Purpose Epoxy-body Low Dissolved Oxygen Electrode with PT100, range: 0. 03 -20 ppm, 5m cable length, tinned open-ended. Set of 5 O-rings & membranes (DOGEN-S) Set of 5 O-rings & membranes (DOTPII-S) Large O-ring (DO GENS/TPIIS) Tool for DOGEN-S Membrane Housing DO Refilling Electrolyte for EC-DOGEN-S (480ml bottle) DO Refilling Electrolyte for EC-DOTPII-S (480ml bottle) Order Code TSDOCTP0500 ECDOGEN-S ECDOTPII-S 01X241605 01X241606 32X246702 15X241503 ECDOGENSOLNBT ECDOTPIISOLNBT 35 Instruction Manual Alpha DO 500 7. 2 Eutech Instruments Controller Replacement and Controller Accessories Item Description Alpha DO 500 Transmitter General purpose epoxy-body dissolved oxygen electrode with Pt100 temperature sensor, 0-20 ppm, 10 foot cable length, tinned open-ended. DO probe maintenance kit; Includes 2 Teflon membranes, 2 membrane O-rings, 1 body seal O-ring, 125mL electrolyte Set of 5 O-rings & Teflon membranes Replacement electrolyte solution for 35201-50, 500 mL Order Code 35151-10 35201-50 35201-70 35201-65 35640-71 NOTE: x To order Eutech accessories, contact the nearest Oakton distributor 36 Instruction Manual Alpha DO 500 8. Troubleshooting Problem Power on, but no display Cause a) Loose connections b) Power cables not in correct polarity (+ & -) c) Incorrect output voltage of the power supply a) Air bubbles in electrode b) Dirty electrode Solution a) Ensure cables make good contact b) Re-wire loop cables with correct polarity c) Use a power supply with specified output voltage a) Tap electrode to remove air bubbles b) Clean electrode and recalibrate a) Ensure shield wire is properly connected to pin 7 Unstable dissolved oxygen reading Oscillating temperature readings a) Electrical noise interference Slow response Blinking ATC Blinking electrode annunciator Or (Dissolved oxygen) Or (Temperature) a) Dirty / Oily electrode a) No temperature probe connection during ATC mode a) Error in calibration a) Dissolved oxygen electrode is not connected a) Temperature probe is not connected when ATC enabled a) Clean electrode a) Ensure temperature sensing cable makes good contact a) Ensure calibration standard solution is not contaminated. 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