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Hach PHC705A, Руководство пользователя

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Section 1 Product overview

The Intellical PHC705A pH probes are digital, combination electrodes that measure the pH of water
samples. The probes have a special pH glass bulb material to help decrease sodium interference in
very alkaline water samples (pH values higher than 12). 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. A 59-mL bottle of reference electrolyte filling solution (saturated KCl solution) is
supplied with the probe. Refer to 

Figure 1

.

Note: Do not use the probe to measure the pH of organic solvents, emulsions or samples with many solids.

Figure 1  Probe overview

1   

Probe soaker bottle with storage solution

5   

Probe soaker bottle holder

2   

Filling-hole plug

6   

Electrode filling and storage solution

3   

Protective tape and filling hole

7   

Reference junction

4   

Cable

8   

Glass bulb and temperature sensor

Section 2 Specifications

Specifications are subject to change without notice.

Specifications

Details

Probe type

Digital combination glass pH probe with refillable electrolyte and built-
in temperature sensor

pH range

0 to 14 pH

pH accuracy

±0.01 pH

Reference type

Red Rod (Ag/AgCl in protective tubes)

Reference junction

Porous pin

Slope

–59 mV/pH (85 to 115% at 25 °C (77 °F) per Nernstian theoretical
value)

Isopotential point

6.00 pH

English

   

3

Содержание PHC705A

Страница 1: ...DOC022 53 80431 PHC705A 05 2021 Edition 2 User Manual ...

Страница 2: ......

Страница 3: ...procedure 8 Section 6 Sample measurement 9 6 1 Sample requirements 9 6 2 Sample measurement notes 9 6 3 Sample measurement procedure 9 Section 7 Verify the calibration 10 7 1 Verification procedure 10 Section 8 Maintenance 11 8 1 Clean the probe 11 8 2 Fill the probe 12 8 3 Add KCl crystals to the probe 13 8 4 Replace the filling solution 14 8 5 Soak procedure for dry probes 15 8 6 Storage 15 Sect...

Страница 4: ...Table of Contents 2 ...

Страница 5: ...e probe to measure the pH of organic solvents emulsions or samples with many solids Figure 1 Probe overview 1 Probe soaker bottle with storage solution 5 Probe soaker bottle holder 2 Filling hole plug 6 Electrode filling and storage solution 3 Protective tape and filling hole 7 Reference junction 4 Cable 8 Glass bulb and temperature sensor Section 2 Specifications Specifications are subject to cha...

Страница 6: ...nufacturing defects but not improper use or wear Certifications CE FCC ISED Section 3 Safety information 3 1 Intended use The Intellical probes are intended for use by individuals who measure water quality parameters in the laboratory The Intellical probes do not treat or alter water 3 2 Use of hazard information D A N G E R Indicates a potentially or imminently hazardous situation which if not av...

Страница 7: ...A probe with a blocked filling hole will not operate correctly New probes are filled with electrolyte filling solution and have a soaker bottle that contains storage solution to keep the glass bulb and reference junction hydrated Prepare the probe for calibration and measurement as follows 1 Remove the protective tape from the filling hole Refer to Figure 2 Note Put the soaker bottle on the soaker...

Страница 8: ...he meter starts for the first time or after battery replacement 8 Connect the probe to the meter 9 Remove the filling hole plug before use Keep the level of the electrolyte filling solution above the level of the measurement liquid during use Refer to Figure 3 Note For measurements in low ionic strength LIS samples soak the probe for a maximum of 5 minutes in the sample before use Figure 2 Remove ...

Страница 9: ...re pH units apart For a one point calibration use a pH buffer near the expected sample pH Use the default calibration options or change the options in the probe settings menu Use the single display mode for calibration when more than one probe is connected to the meter if applicable Calibrate the probes and verify the calibration regularly for best results Use the meter to set calibration reminder...

Страница 10: ...uffer solution Make sure that the sensor and reference junction are fully in the solution Do not put the probe on the bottom or sides of the beaker 6 Shake the probe from side to side to refresh the reference junction and remove air bubbles Note Be careful to not hit the beaker and damage the probe 7 Stir slowly then read the pH value of the buffer solution The display shows the temperature correc...

Страница 11: ...h purity or low ionic strength LIS samples absorb gases from the air that can change the sample pH For stable measurements use an LIS chamber or a flow cell 6 2 Sample measurement notes Read the notes that follow before sample measurements Rinse the probe with deionized water and dry with a lint free cloth between measurements to prevent contamination If complete traceability is necessary enter a ...

Страница 12: ...ares the selected pH buffer value to the measured pH value and accepts or rejects the measurement The user can change the pH buffer solution and acceptance criteria for verification in the probe specific settings Note Password protection may prevent access to the acceptance criteria 7 1 Verification procedure 1 Go to the verification menu The display shows the pH buffer solution to use for verific...

Страница 13: ...Sample material stays on the probe 1 Rinse the probe with deionized water Use warm 35 45 C 95 113 F deionized water to remove storage solution that dries on the probe Dry the probe body with a lint free cloth 2 Soak the glass bulb and reference junction in the applicable cleaning solution for the specified time Refer to Table 1 and Consumables on page 17 3 Rinse or soak the probe for 1 minute in d...

Страница 14: ...unctions Electrode cleaning solution for porous pin diaphragm reference junctions Thiourea 3 hours with stirring or until the porous plug becomes white 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...

Страница 15: ...is less than 0 5 cm 0 2 in or when the sample temperature is more than 60 C 140 F Refer to Figure 5 and Table 2 for preparation Mix some of the filling solution with the crystals to help move the crystals through the filling hole Refer to Figure 6 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 tempera...

Страница 16: ...nd KCl crystals from the probe as possible Discard the solution and KCl crystals 3 Remove the remaining KCl crystals as follows a Fill the probe half full with deionized water Close the filling hole b Shake the probe until the crystals become loose Note If the crystals do not loosen fill the probe with deionized water and put the probe in a warm water bath maximum 60 C 140 F for approximately 10 m...

Страница 17: ... N O T I C E Probes can become permanently damaged if kept in a storage solution that is not specified by the manufacturer Use only the specified storage solution saturated KCl Do not store the probe in deionized water or in samples of low ionic strength For short term storage the probe can stay in the sample for a maximum of 2 hours if the sample pH is not high Close the filling hole and put the ...

Страница 18: ...bilization or inaccurate measurements The sample absorbs carbon dioxide CO2 from the air which causes the pH value to slowly decrease in low ionic strength LIS or high purity samples Use the LIS chamber for LIS high purity samples to prevent CO2 absorption The sample temperature is low or there is a large temperature difference between samples Increase the sample temperature or adjust the temperat...

Страница 19: ... Item no pH 4 01 buffer solution Singlet one use packets 20 mL each 20 pkg 2770020 pH 7 00 buffer solution Singlet one use packets 20 mL each 20 pkg 2770120 pH 10 01 buffer solution Singlet one use packets 20 mL each 20 pkg 2770220 pH 4 01 and pH 7 00 buffer solution kit Singlet one use packets 20 mL each 2 x 10 pkg 2769920 pH 7 00 and 10 01 buffer solution kit Singlet one use packets 20 mL each 2...

Страница 20: ... pkg SM5010 Beaker 30 mL plastic red 80 pkg SM5011 Beaker 30 mL plastic yellow 80 pkg SM5012 Beaker 30 mL plastic blue 80 pkg SM5013 Beaker 30 mL plastic green 80 pkg SM5014 Beaker dispenser and holder 30 mL 1 923 656 Beaker holder 30 mL 1 923 556 Beaker 100 mL polypropylene 1 108042 Filling hole plug clip on 1 M035J35 LIS low ionic strength chamber 1 5189900 Disposable wipes 11 x 22 cm 280 pkg 20...

Страница 21: ......

Страница 22: ... 669 2932 orders hach com www hach com HACH LANGE GMBH Willstätterstraße 11 D 40549 Düsseldorf Germany Tel 49 0 2 11 52 88 320 Fax 49 0 2 11 52 88 210 info de hach com www de hach com HACH LANGE Sàrl 6 route de Compois 1222 Vésenaz SWITZERLAND Tel 41 22 594 6400 Fax 41 22 594 6499 Hach Company Hach Lange GmbH 2014 2021 All rights reserved ...

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