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daviteq A420-FCL User Manual Download Page 1

User Guide For Free Chlorine Sensor with Analog output A420-FCL

User Guide For Free
Chlorine Sensor with
Analog output A420-FCL

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Summary of Contents for A420-FCL

Page 1: ...User Guide For Free Chlorine Sensor with Analog output A420 FCL User Guide For Free Chlorine Sensor with Analog output A420 FCL ...

Page 2: ...tration up to 50 ppm The bound membrane sensor cap provides good stability and durability for this product In addition our proprietary Internal Filled Gel IFG signiﬁcantly reduces the electrode measurement s pH dependence In principle the chlorine electrode measures the total chlorine of the water sample via the measurement mechanism described below However free chlorine measurement is also feasib...

Page 3: ...le 6m with BNC connector Rating IP68 Sensor Dimension D21 3 x 219 mm Sensor net weight 200 grams Warranty 1 year for probe membrane for 03 months The Chlorine Electrode is designed to operate with 9 24 VDC power Connecting the electrode to any power outside the normal range may result in electrode damage and void the warranty In addition to complying with the instructions included in this manual b...

Page 4: ...aside Note Avoid damaging the Silver Halide Coating gray portion 4 Polish the working electrode WE surface see arrow with the polishing strip until it is shiny in appearance Polish the gold tip in one direction Do not over polish this should just take a few strokes on the polishing strip Avoid touching the silver halide coating Rinse the electrode with DI water after polishing 5 Fill the membrane ...

Page 5: ...The electrode is now ready for polarization and conditioning steps Yellow Vin Black Vin Red 4 20mA Input Green Ground 0VDC 1 The standard cable length is 3 feet If another cable length is needed contact your supplier or manufacturer The maximum length should be no more than 30 feet to avoid signal loss 2 The output current of power source should be more than 100 mA 3 The A420 FCL output can be mea...

Page 6: ...ration As a result a 2 point calibration determine the ﬁnal calculation equation Usually the zero and the half scale points are recommended for calibrating A420 FCL For the zero point 1st point it can be obtained in zero chlorine water during the conditioning processing Generally the zero point of A420 FCL should be within the speciﬁcation ranges provided in Tables 1 and 2 The zero point drift is ...

Page 7: ...ro point of A420 FCL is not within speciﬁcations or there is no signiﬁcant change in the measurement environment but the electrode reading is continuously increasing or decreasing not ﬂuctuating within an hour re polarization is probably needed The root cause is that some interfering substances probably were brought to the working electrode again such as unsuccessfully polishing the surface of wor...

Page 8: ...ane the membrane cap may need to be replaced Please make sure the electrode is not powered during assembly and then follow the instruction below for replacement 1 Unpack the membrane cap replacement kit and prepare the new membrane cap on a clean surface 2 Unscrew the old membrane cap and discard it 3 Rinse the new membrane cap with clean water then rinse it with 1 2 mL of the IFG 4 Follow the ins...

Page 9: ... outside of membranecap especially at center pore 3 Air bubbles inside the membrane cap 1 Clean or change membrane cap 2 Shake the electrode to remove theair bubbles from the center pore 3 Shake electrode or inspect the cap for air bubbles Slope too low 1 Membrane cap fouled 2 IFG deterioration 3 Insufficient conditioning 4 Flow rate too low 5 Erroneous DPD standardization 1 Clean or change membra...

Page 10: ... Hung Vuong Res An Lac Ward Binh Tan Dist Ho Chi Minh City Vietnam Tel 84 28 6268 2523 4 ext 122 Email info daviteq com www daviteq com Distributor in Australia and New Zealand Templogger Pty Ltd Tel 1800 LOGGER Email contact templogger net 8 Support contacts ...

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