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Related Manuals for Hach ISENA381 Series
Summary of Contents for Hach ISENA381 Series
- Page 1 DOC022.53.80027 ISENA381 05/2021, Edition 5 User Manual...
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Page 3: Table Of Contents
Table of Contents Section 1 Product overview ................. 3 Section 2 Specifications ..................3 Section 3 Safety information ................4 3.1 Intended use ....................... 4 3.2 Use of hazard information ..................4 3.3 Precautionary labels ..................... 5 3.4 Product hazards ....................5 Section 4 Preparation for use ................ - Page 4 Table of Contents...
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Page 5: Section 1 Product Overview
Section 1 Product overview The Intellical ISENA381 series probes are digital, combination ion-selective electrodes (ISE) that measure the concentration of sodium in wastewater, drinking water and general water samples. The probes are refillable and have a built-in temperature sensor and a double ceramic pin for a reference junction. -
Page 6: Section 3 Safety Information
Specifications Details Storage temperature 5 to 40 °C (41 to 104 °F) Response time in linear region 1 to 2 minutes in sample concentration > 1.4 mg/L Minimum sample volume 25 mL Minimum immersion depth 25.4 mm (1 in.) Electrode filling solution 0.02 M NH Storage solution Long-term storage: 0.02 M NH... -
Page 7: Precautionary Labels
3.3 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 on the instrument is referenced in the manual with a precautionary statement. Electrical equipment marked with this symbol may not be disposed of in European domestic or public disposal systems. - Page 8 c. Put the probe in the prepared solution and soak the probe for 1 hour or more (8 hours for best results). Note: If probe stabilization is slow after storage, condition the probe for 1 hour or more (8 hours for best results) in 25 mL of a 100 mg/L sodium standard solution that contains one Sodium Ionic Strength Adjustor (ISA) Powder Pillow.
- Page 9 Figure 3 Remove the protective tape English 7...
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Page 10: Section 5 Calibration
Figure 4 Probe position during use 1 Filling hole in open position 3 Level of calibration solution or sample 2 Level of electrolyte filling solution Section 5 Calibration The procedure that follows is applicable to meters that can connect to Intellical ISE probes. Refer to the applicable meter documentation for meter operation and probe-specific settings. -
Page 11: Calibration Procedure
5.2 Calibration procedure 1. Go to the 2. Add 25 mL of 3. Add one Sodium 4. Add a stir bar to calibrate menu. each standard Ionic Strength the first standard Select the probe, if solution to different Adjustor (ISA) solution. -
Page 12: Section 6 Sample Measurement
Section 6 Sample measurement The procedure that follows is applicable to meters that can connect to Intellical ISE probes. Refer to the applicable meter documentation for meter operation and probe-specific settings. 6.1 Sample measurement notes Read the notes that follow before sample measurements. •... -
Page 13: Interferences
5. Rinse the probe 6. Put the probe in 7. Shake the probe 8. Stir for 30 to with the prepared the sample with the from side to side to 60 seconds, then sodium ISA rinse sensor fully in the refresh the reference read the sodium solution. -
Page 14: Section 7 Verify The Calibration
Section 7 Verify the calibration Measure the value of a fresh standard solution at regular intervals to make sure the result is accurate. The meter compares the expected standard solution value to the measured value and accepts or rejects the measurement. The user can change the standard solution and acceptance criteria for verification in the probe-specific settings. -
Page 15: Section 8 Maintenance
1. Rinse the probe with the prepared sodium ISA rinse solution. Dry the probe with a lint-free cloth. Do not use deionized water. 2. Soak the glass bulb for 12 to 16 hours in Hach Electrode Cleaning Solution. 3. Soak the probe for 1 minute in 25 mL of a 100-mg/L sodium standard solution that contains one Sodium Ionic Strength Adjustor (ISA) Powder Pillow. -
Page 16: Replace The Filling Solution
Figure 5 Fill the probe 8.3 Replace the filling solution If the filling solution becomes contaminated, replace the filling solution. 1. Tilt the probe and open the filling hole. 2. Use a plastic transfer pipet to remove the contaminated solution from the filling hole. Discard the solution. - Page 17 For long-term storage (more than 24 hours), close the filling hole and put the soaker bottle with 0.02 M NH Cl on the probe. Refer to Figure 6. Keep the probe in a vertical position with the sensor and reference junction below the liquid level in the soaker bottle. Add 0.02 M NH Cl to the soaker bottle if necessary.
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Page 18: Section 9 Troubleshooting
Section 9 Troubleshooting Refer to Table 2 for general troubleshooting information. To check the probe performance, refer to Slope check on page 17. To check the accuracy of sample measurements, refer to Standard additions check on page 17. Table 2 Troubleshooting information Problem Possible cause Solution... -
Page 19: Slope Check
Table 2 Troubleshooting information (continued) Problem Possible cause Solution The filling hole is closed. Open the filling hole during use. The stir speed is too slow or Try a different stir speed. too fast. Air bubbles are around or Carefully tap or shake the probe below the probe tip. -
Page 20: Section 10 Consumables
Table 3 Standard solution volumes and concentrations (continued) Measured sample Volume of standard to Concentration of standard concentration solution 15 to 30 mg/L 0.5 mL 1000 mg/L Na 30 to 60 mg/L 1.0 mL 1000 mg/L Na 3. Measure the concentration of the spiked sample. 4. - Page 22 Tel. +49 (0) 2 11 52 88-320 SWITZERLAND Fax (970) 669-2932 Fax +49 (0) 2 11 52 88-210 Tel. +41 22 594 6400 orders@hach.com info-de@hach.com Fax +41 22 594 6499 www.hach.com www.de.hach.com © Hach Company/Hach Lange GmbH, 2010, 2013, 2016, 2021. All rights reserved.