pH- and ORP measurement with standard electrodes - Martens ...
pH- and ORP measurement with standard electrodes - Martens ...
pH- and ORP measurement with standard electrodes - Martens ...
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ContentPageTechnical data................................................................................................................................................. 2-3Dimensions......................................................................................................................................................... 3Connection diagrams/terminals....................................................................................................................... 4-6Legend (cover plate) .......................................................................................................................................... 6Controls- <strong>and</strong> display.......................................................................................................................................... 7Installation .......................................................................................................................................................... 7Notes about calibration................................................................................................................................. 8, 22Calibration modes of the UNICON-<strong>pH</strong> ............................................................................................................... 9Programming.................................................................................................................................................... 10Calibration/configure .............................................................................................................................. 10Automatic calibration......................................................................................................................... 11-12Manual calibration............................................................................................................................. 13-15Data calibration ...................................................................................................................................... 16<strong>ORP</strong> calibration ...................................................................................................................................... 16Configuration..................................................................................................................................... 17-20Error codes............................................................................................................................................. 21Mounting notes................................................................................................................................................. 21Replacement of <strong>electrodes</strong> at in-line fittings for head mounting....................................................................... 22Operation notes for <strong>pH</strong> / <strong>ORP</strong> <strong>electrodes</strong> ................................................................................................... 22-23Ordering code................................................................................................................................................... 24Technical dataPower supplySupply voltage: 14 ... 30 V DC, 2-wire, loop poweredOperating temperature : 0 ... 50 °C (32 ... 122 °F)Isolation : <strong>pH</strong> - <strong>and</strong> <strong>ORP</strong> output/temperature output/alarm output 1/alarm output 2/range switch inputTest voltage: 500 V DC- conformity : acc. to EN50022, IEC61000-4-3/4/5<strong>pH</strong> / <strong>ORP</strong>Output signal: 4 ... 20 mABurden: RA [Ω] ≤ Supply voltage -14 V0.02 AMeasuring range: programmable in range <strong>pH</strong>-1.00 ... +15.00 or -1500 ... +1500 mVInput resistance: > 10 12 ΩInput current: < 10 -12 AElectrode zero point : <strong>pH</strong> = 7.00 (Δ<strong>pH</strong> = ± 2.0)Slope: 30 ... 80 mV / <strong>pH</strong>Offset <strong>ORP</strong>: ± 200 mVError: ± 0.2 % of the range or ± 2DigitTemperature coefficient :
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