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Hanna Instruments HI 4013, Instruction Manual

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Hanna Instruments HI 4013 Instruction Manual Download Page 4

4

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IV.  

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IV.  

IV.  Design elements of the HI 4013 and HI 4113

Design elements of the HI 4013 and HI 4113

Design elements of the HI 4013 and HI 4113

Design elements of the HI 4013 and HI 4113

Design elements of the HI 4013 and HI 4113

      

      

      

      

      electrodes

electrodes

electrodes

electrodes

electrodes

Upper Cap

Spring

O-Ring

Ceramic Junction
on Inner Stem

Fill Hole

O-Ring and
Plug

Sensing Module

Outer Sleeve

Upper
Threads

Liquid junction

SENSO

R

HANDLE

HI

4000-50

Cap

Sensing
module

Sensor
Handle

O-Ring

Summary of Contents for HI 4013

Page 1: ...nstruction Manual SENSOR HANDLE HI 4000 50 HI 4113 NITRATE COMBINATION HI 4013 HI 4013 HI 4013 HI 4013 HI 4013 HI 4113 HI 4113 HI 4113 HI 4113 HI 4113 Nitrate Ion Selective Electrode Half cell Combination ...

Page 2: ...nic polymer membrane that is sensitivetonitrateions TheHI4013isahalf cellelectrode thatrequiresaseparatereference TheHI4113isacombi nation ion selective electrode II II II II II Specifications Specifications Specifications Specifications Specifications Type PVC membrane with or ganic ion exchanger Ion measured Nitrate NO3 Measurement range 0 1 M to 1X 10 5 M 6200 to 0 62 ppm Interference Organic s...

Page 3: ...rane used on the sensor is impregnated with the organic ion exchanger This organic ion exchanger is considered a carrier ionophore in that it is capable of shielding and carrying the charged nitrate ion in it s polar cage freely through the apolar regions of the membrane A charge imbalance developes between the test solution and internal cell of the sensor This voltage changes in response to the s...

Page 4: ...3 Design elements of the HI 4013 and HI 4113 Design elements of the HI 4013 and HI 4113 electrodes electrodes electrodes electrodes electrodes Upper Cap Spring O Ring Ceramic Junction on Inner Stem Fill Hole O Ring and Plug Sensing Module Outer Sleeve Upper Threads Liquid junction SENSOR HANDLE HI 4000 50 Cap Sensing module Sensor Handle O Ring ...

Page 5: ...ts 0 1 M sodium nitrate standard 500 mL HI4013 01 100 ppm nitrate standard 500 mL HI4013 02 1000 ppm nitrate standard 500 mL HI4013 03 Ionic Strength Adjuster ISA 500 mL HI4013 00 ISISA 500 mL HI4013 06 Using volumetric pipettes and glassware make dilutions to bracket the concentration of the samples Store samples in plastic bottles Standards with concentrations 10 3 M should be prepared daily Two...

Page 6: ...olutions should have the same ionic strength ISA should be added to both samples and standards Calibration standards and sample solutions should be at same temperature Thermallyinsulatesolutionvesselfrommagneticstir rer Calibration standards and sample solutions should be stirred at the same rate using identical sized TFE coated stir bars Rinse electrodes with distilled or deionized water be tween...

Page 7: ... allowed to drop more than 2 3 cm 1 inch below fill hole Do not use an electrode if crystallized salts are visible insidetheelectrode Drainelectrode disassembleand rinseinternalbodywithdeionizedwater Reassemble and refill with fresh fill solution If an erratic measurement occurs check to see if for eign matter is seen trapped near the internal cone Drain by depressing the electrode cap then refill...

Page 8: ...nnect cable connectors to meter 6 Soak the Nitrate electrodes membrane in a Nitrate containing standard 0 001M without ISA before calibration HI4113 TheHannaHI4113isshippeddisassembled Thesensoris shipped with two HI 4113 51 modules 1 Unwrap Parafilm seal found over ceramic junction on inner stem and discard This is only used for ship ping or long term storage 2 Removesensingconefromshippingvial D...

Page 9: ... into the outer body sliding spring down cable and screwing cap into place 6 Remove fill hole cover and o ring on fill hole spout Using the dropper pipette provided add a few drops HI 7078 fill solution to the electrode Invert the elec trodetowettheo ringandrinsethefillsolutioncham ber D ei on iz ed W a te r Remove Parafilm Install sensing module ...

Page 10: ...r or equivalent and connect BNC connector to meter IX IX IX IX IX Quick Check of Electrode Slope Quick Check of Electrode Slope Quick Check of Electrode Slope Quick Check of Electrode Slope Quick Check of Electrode Slope Connectelectrode s topH mV ISEmeter Place meter in mV mode Place 100 mL of deionized water into a beaker with stir bar Place reference and measuring half cell or combina tion elec...

Page 11: ...ards are freshly made and stored Remake solutions if appropriate Store in plastic bottles If the reading is jumpy or unstable shake sensor down seesectionVII If the sensor slope just misses the suggested slope window soaking the sensor in a standard solution without ISA may solve the problem If the membrane is damaged the response becomes extremely sluggish or the slope of the electrode has decrea...

Page 12: ...dose of 2 mL per 100 mL sample or standard ISISA may also be used at a dose of 10 mL for 50 mL of sample or standard The meter is calibrated using freshly made standards that are in the measurement range of the unknowns Unknowns are read directly In the region where the electrode calibration be comes less linear more calibration points are needed and calibration will need to be repeated more frequ...

Page 13: ...ards Add stir bar and mix before taking measurements 2 FollowsectionVII GeneralGuidelinestooptimizetest set up 3 Duringcalibrationitisbesttostartwithlowerconcen trationsamplesfirst Waitforastablereadingbefore reading recording values Permit longer equilibra tion times at these levels 3 or 4 minutes To prevent carry over and contamination of samples rinse sensors with deionized water and remove moi...

Page 14: ... simplifies the method greatly Example Nitrate ion determination with known addition 1 A 50 mL sample of unknown VSAMPLE is placed in a clean plastic beaker with an electrode s Add 50 mL of ISISA to sample Mix mV 1 is recorded 2 5mL VSTANDARD of 10 1 M CSTANDARD standardisadded to the beaker and the mV value decreases Note for other concentration samples add a known volume and concentration of sta...

Page 15: ...me periods For long term storage unscrew sensing module from sensor handle and store dry in the shipping vial The model HI 4113 combination electrode can be left in dilute standards that do not contain ISA for short time periods If the electrode will be used frequently and needs tobereadyforuse takemeasurestopreventevaporationof fill solution Top off fill solution replace o ring fill hole cover on...

Page 16: ...r 6 monthsfromdateofpurchasewhenusedfortheirintended purpose and maintained according to instructions If they failtoworkwhenfirstusedcontactyourdealerimmediately Damageduetoaccidents misuse misapplication tampering or lack of prescribed maintenance is not covered HannaInstruments reservestherighttomodifythedesign constructionorappearanceofitsproductswithoutadvance notice ...

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