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Related Manuals for Hach PHC729
Summary of Contents for Hach PHC729
- Page 1 DOC022.53.80433 PHC729 05/2021, Edition 2 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 PHC729 pH probes are digital, combination electrodes with a flat sensing element that measure the pH of flat surfaces or samples of low depth. The probes use the Red Rod technology and a saturated KCl electrolyte for high performance. The probes are refillable and have a built-in temperature sensor. -
Page 6: Section 3 Safety Information
Section 3 Safety information 3.1 Intended use The Intellical PHC729 probe is intended for use by individuals in the laboratory who measure the pH of flat surfaces or samples of low depth. The Intellical probes do not treat or alter samples. -
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 7. Make sure that the meter has the correct date and time settings. The service-life time stamp in the probe comes from the date and time settings in the meter. Note: Some meters automatically open the date and time settings when the meter starts for the first time, or after battery replacement.
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Page 9: Section 5 Calibration
Figure 3 Probe position during use 1 Filling hole 3 Level of calibration solution 2 Level of electrolyte filling solution 4 Sample surface measurement Section 5 Calibration The procedure that follows is applicable to meters that can connect to Intellical pH probes. Refer to the applicable meter documentation for meter operation and probe-specific settings. -
Page 10: Calibration Procedure
5.2 Calibration procedure 1. Go to the 2. Prepare or pour 3. Open the filling 4. Rinse the probe calibrate menu. the pH buffer hole. with deionized water. Select the probe, if solutions in different Dry the probe with a applicable. -
Page 11: Section 6 Sample Measurement
Section 6 Sample measurement The procedure that follows is applicable to meters that can connect to Intellical pH probes. Refer to the applicable meter documentation for meter operation and probe-specific settings. 6.1 Sample requirements N O T I C E Make sure that the sample type is compatible with the probe, or probe damage can occur. -
Page 12: Section 7 Verify The Calibration
Section 7 Verify the calibration Measure the pH value of a fresh pH buffer solution to make sure the result is accurate. The meter compares the selected pH buffer value to the measured pH value and accepts or rejects the measurement. -
Page 13: Section 8 Maintenance
Section 8 Maintenance Regular maintenance is necessary for the best accuracy, stabilization time and life of the probe. Keep the probe in the recommended storage solution between measurements. 8.1 Clean the probe Clean the probe regularly to remove contamination and to keep the reference junction open. Symptoms of contamination: •... -
Page 14: Fill The Probe
8.2 Fill the probe Add electrolyte filling solution to the probe regularly to make sure that the electrolyte flows from the probe to the sample. Refer to Figure 4. Make sure to use the correct filling solution (saturated KCl). Note: If the dispensing tip becomes clogged, remove the dispensing tip and soak the tip in warm water. Then, fully dry and assemble the tip again. - Page 15 Figure 5 Items to collect 1 Plastic pipet 4 Mixing bottle 2 Measuring scoop 5 Saturated KCl solution 3 KCl crystals Table 2 KCl quantity at high temperatures Temperature KCl quantity 60 °C (140 °F) 0.5 g (0.5 cm (0.2 in.)) 70 °C (158 °F) 0.625 g 80 °C (176 °F)
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Page 16: Replace The Filling Solution
Figure 6 Add KCl crystals to the probe 8.4 Replace the filling solution Replace the filling solution and KCl crystals when one of the conditions that follow occurs: • The filling solution becomes contaminated. • The KCl crystals in a probe do not move freely through the liquid when the probe is inverted. 1. -
Page 17: Soak Procedure For Dry Probes
6. Add new KCl crystals to the probe until there is approximately 0.5 cm (0.2 in.) of crystals above the glass bulb. Refer to Figure 6 on page 14. 7. Fill the probe with new filling solution. Refer to Fill the probe on page 12. -
Page 18: Section 9 Troubleshooting
Section 9 Troubleshooting Problem Possible cause Solution The glass sensor is dirty. Clean and condition the probe. Refer to Clean the probe on page 11. The reference junction is Clean and condition the probe. clogged. Refer to Clean the probe on page 11. -
Page 19: Recommended Standards
Section 10 Consumables (continued) Description Quantity Item no. Electrode cleaning solution for minerals/inorganic 500 mL 2975149 contamination Electrode cleaning solution for proteins/organic 250 mL C20C370 contamination Electrode cleaning solution for fats, oils and grease 500 mL 2964449 contamination Electrode cleaning solution for porous pin/diaphragm 250 mL C20C380 reference junctions... -
Page 20: Accessories
10.1 Recommended standards (continued) Description Unit Item no. pH buffer 4.65, technical 500 mL S11M010 pH buffer 9.23, technical 500 mL S11M011 10.2 Accessories Description Quantity Item no. Beaker, 30 mL, plastic, colorless 80/pkg SM5010 Beaker, 30 mL, plastic, red 80/pkg SM5011 Beaker, 30 mL, plastic, yellow... - 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, 2014, 2021. All rights reserved.