Hach-lange HQD - Sodium (Na+) Ion Selective Electrode ISENa Manuel d'utilisateur

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DOC272.53.80027
User instructions
Sodium (Na
+
) Ion Selective Electrode: Model ISENa38101 or
ISENa38103 Electrode
Safety Information
Precautionary Labels
Read all labels and tags attached to the instrument. Personal injury or damage to the
instrument could occur if not observed. A symbol, if noted on the instrument, will be included
with a danger or caution statement in the manual.
Overview
The ISENa38101 or ISENa38103 electrode is a refillable combination sodium electrode with a
built-in temperature sensor. The ISENa38101 or ISENa38103 electrode is available with a 1 or
3 meter cable and is intended for laboratory use. The electrode measures sodium
concentration in water samples. A 59 mL bottle of 0.02M NH
4
Cl Electrode Filling solution is
included with the electrode.
Specifications
Note: Specifications are subject to change without notice.
Electrical equipment marked with this symbol may not be disposed of in European public disposal systems after
12 August of 2005. In conformity with European local and national regulations (EU Directive 2002/96/EC),
European electrical equipment users must now return old or end-of life equipment to the Producer for disposal at no
charge to the user.
Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return
end-of-life equipment, producer-supplied electrical accessories, and all auxiliary items for proper disposal.
This is the safety alert symbol. Obey all safety messages that follow this symbol to avoid potential injury. If on the
instrument, refer to the instruction manual for operation or safety information.
Specification Details
Electrode type
Digital combination electrode with a double junction, refillable junction reference and a
built-in temperature sensor
Electrode resistance < 800 Mohms at 25 °C
Range 0.023 mg/L (1x10
-6
M) to 23,000 mg/L (1 M) Na
+
Sample pH range pH 4 to 14, must be adjusted to > pH 9 per Sodium ISA
Linear region 1.4 mg/L to 23,000 mg/L
Slope -59 mV/pNa (98 to 103% at 25 °C per nernstian theoretical value)
Operating temperature range 0 to 50 °C
Storage temperature range 5 to 40 °C
Junction Double ceramic porous pin
Reference type Ag/AgCl
Fill solution 0.02M NH
4
Cl
Response time in linear region 1 to 2 minutes in sample concentration > 1.4 mg/L
Minimum sample volume 25 mL
Dimensions Diameter: 12 mm, Length: 103 mm, Total length: 220 mm, Cable length: 1 or 3 meter
Cable connection Digital output and connector compatible with HQd meters
Ionic strength adjusters Hach sodium ISA
Recommended standard solutions 10, 100, and 1000 mg/L Na
+
standard solution
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Résumé du contenu

Page 1 - User instructions

1DOC272.53.80027User instructionsSodium (Na+) Ion Selective Electrode: Model ISENa38101 or ISENa38103 ElectrodeSafety InformationPrecautionary LabelsR

Page 2 - Preparation for use

10 DOC272.53.800276. If prompted, enter a name for the new method settings. Additional changes made to the settings of an existing method are automati

Page 3 - Calibration

DOC272.53.80027 116. If prompted, enter a name for the new method settings. Additional changes made to the settings of an existing method are automati

Page 4

12 DOC272.53.800276. If prompted, enter a name for the new method settings. Additional changes made to the settings of an existing method are automati

Page 5 - Measurement (Direct Method)

DOC272.53.80027 13Slope out of range (refer to Checking electrode response on page 14)pH is too low Verify the ph is > 9 after each ISA additionIon

Page 6

14 DOC272.53.80027Checking electrode responseTo verify electrode response, measure the electrode potential (in mV) of two Sodium Standard Solutions on

Page 7 - Maintenance

DOC272.53.80027 15Replacement PartsDescription Quantity Item NumberIntelliCAL ISENa381 electrode, standard, with 1 m cable 1 ISENa38101IntelliCAL ISEN

Page 8 - Advanced operations

HACH Company World HeadquartersP.O. Box 389Loveland, Colorado 80539-0389 U.S.A. International customers:Tel (800) -227-4224 (U.S.A. only) Tel +001 (97

Page 9

2 DOC272.53.80027Preparation for use1. Remove the electrode soaker bottle from the electrode by loosening the soaker bottle cap.2. Remove the tape fro

Page 10 - Change calibration options

DOC272.53.80027 3CalibrationCalibration notes• Probes are initially calibrated at the factory. However, regular calibration by the user is recommended

Page 11 - Change check standard options

4 DOC272.53.800271. Connect the electrode to the meter. 2. In three separate beakers or appropriate containers prepare 25-mL standard solutions of 10,

Page 12 - Troubleshooting

DOC272.53.80027 5Run check standardThe run check standard feature validates instrument performance between sample measurements. Use the run check stan

Page 13 - Troubleshooting (continued)

6 DOC272.53.800271. Prepare the electrode for use. Refer to Preparation for use on page 2. Connect the electrode to the meter.2. Prepare 25-mL of the

Page 14

DOC272.53.80027 7InterferencesThe glass membrane responds to sodium as well as other ions, so interferences exist. Typically, electrode response to an

Page 15 - Consumables

8 DOC272.53.80027• Rinse or soak for 1 minute in 25 mL of 100 mg/L sodium standard (containing Sodium ISA).• Calibrate and test the electrode again fo

Page 16 - P.O. Box 389

DOC272.53.80027 9Change measurement optionsMethods are groups of default or user defined settings relevant to specific applications. If the meter is s

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