Hanna Instruments HI8520 - Manuals

10 RANGE OFF Temperature Buffer Values (pH) °C °F 4.01 7.01 10.01 0 10203040 32506886 104 4.014.004.004.024.04 7.137.077.037.006.98 10.3210.1810.06 9.969.88 CON ERROR SYMBOLS °C CAL ON E1: pH out of range E2: °C out of range E4: wrong pH 7 E5: wrong pH 4/10 FUNCTIONAL DESCRIPTION & SPECIFICATION...

14 OPERATIONAL GUIDE TAKING PH MEASUREMENTS Connect the instrument to the 12VDC adapter ( HI710005 or HI710006 ). Plug the adapter into the mains. Make sure that the instrument has been calibrated for pH beforetaking pH measurements (see page 18). For HI8519 only: • Connect the pH electrode to the m...

15 4 cm (1½ ") °C pH • In HI8417 the temperature reading is also displayed on the left LCD. Note: the electrode should be submerged approximately 4 cm (1½")into the solution. If the temperature probe is used, it shouldbe located as close to the pH electrode as possible. If measurements are t...

16 • When the temperature is set manually, "°C" symbol blinks. With the tempera-ture probe connected, the "°C" symbolis displayed continuously. • Use the UP or DOWN arrow keys to manually adjust the display readingto the value of the reference ther-mometer. TAKING TEMPERATURE MEASURE...

17 For HI8417 and HI8521 • Connect the ORP electrode to the meter and submerge the tip (4 cm / 1½") into the sample to be tested. Note: ORP measurements are taken without temperature compensa-tion. • Press the pH/mV key (HI8417) or RANGE key (HI8521) once to enterthe mV mode. • Allow a few minut...

18 IMPORTANT The instrument's pH range should be re-calibrated: • When the meter is new.• Whenever the pH electrode is replaced.• At least once a month.• After use in aggressive chemicals.• After cleaning procedure and changing the reference electrolyte.• For greatest accuracy. INITIAL PREPARATION P...

19 Procedure: • Switch the instrument on after connecting the pH electrode and the temperature probe. • Immerse the pH electrode and the ATC probe into a neutral pH buffer solution (pH 7.01for technical buffers, or pH 6.86 for NBSbuffers).Shake briefly and wait 1-2 minutes for thermalequilibrium. • ...

23 PH VALUES AT VARIOUS TEMPERATURE Temperature has an effect on pH. The calibration buffer solutions areeffected by temperature changes to a lesser degree than normalsolutions.For manual temperature calibration (standard with HI 8519 or op- tional with HI 8417 , HI 8520 and HI 8521 ) please refer t...

24 Possible Solutions: Replace the probe. Replace the electrode andrepeat the pH calibration. Leave the electrode in astorage solution after clean-ing the diaphragm.If the problem is not solved,replace the electrode and re-calibrate the pH scale.Try the cleaning procedure.If this does not work, re-p...

25 ReferenceFilling Hole ReferenceFilling Hole Sensitive Wire Reference Wire Reference Junction Glass Bulb GlassBulb ReferenceJunction ReferenceJunction Reference Junction Platinum orGold tip Platinum or Gold tip ReferenceWire ReferenceWire SensitiveWire Glass Body pH Electrode Plastic Body pH Elect...

26 For refillable electrodes: If the filling solution (electrolyte) is more than 2½ cm (1") below thefill hole, add HI 7082 or HI 8082 3.5M KCl Electrolyte Solution for double junction or HI 7071 or HI 8071 3.5M KCl+AgCl Electrolyte Solution for single junction electrodes.For a faster response, ...

27 CLEANING PROCEDURE General Soak in Hanna HI 7061 or HI 8061 General Clean- ing Solution for approximately ½ hour. Removal of films, dirt or deposits on the membrane/junction:- Protein Soak in Hanna HI 7073 or HI 8073 Protein Cleaning Solution for 15 minutes. - Inorganic Soak in Hanna HI 7074 or H...

28 TEMPERATURE-RESISTANCE CORRELATION The resistance of glass electrodes partially depends on the tempera-ture. The lower the temperature, the higher the resistance. It takeslonger time for the reading to stabilize if the resistance is higher. Inaddition, the response time will suffer to a greater d...

30 ACCESSORIES pH CALIBRATION SOLUTIONS HI 70004P pH 4.01 Buffer Sachets, 20mL, 25 pcs HI 70007P pH 7.01 Buffer Sachets, 20mL, 25 pcs HI 70010P pH 10.01 Buffer Sachets, 20mL, 25 pcs HI 7004L pH 4.01 Buffer Solution, 460 mL HI 7006L pH 6.86 Buffer Solution, 460 mL HI 7007L pH 7.01 Buffer Solution, 46...

31 HI 7082 3.5M KCl Electrolyte, 4x50 mL, for double junctionelectrodes REFILL ELECTROLYTE SOLUTIONS IN FDA APPROVEDBOTTLES HI 8071 3.5M KCl + AgCl Electrolyte, 4x50mL, for singlejunction electrodes HI 8072 1M KNO 3 Electrolyte, 4x50 mL HI 8082 3.5M KCl Electrolyte, 4x50 mL, for double junctionelect...

35 150 mm 5.9" 12 mm 0.5" "S" VERSION HI 3131 120 mm 4.7" 12 mm 0.5" HI 3230 "S" VERSION 120 mm 4.7" 12 mm 0.5" HI 4430 "S" VERSION CONNECT TOSCREW TYPE ELECTRODES CONNECT TO THE BNC SOCKET OF THE METER HI 7855 SERIES CABLE CONNECTORS CONNECTOR AND 3.0...

36 HI7855/10 Extension cable 10m (33') long HI7855/15 Extension cable 15m (49.5') long Power Units: HI710005 Voltage adapter from 115 VAC to 12 VDC HI710006 Voltage adapter from 230 VAC to 12 VDC OTHER ACCESSORIES ChecktempC Pocket-size thermometer (range -50.0 to 150.0°C) HI 76405 Electrode holder ...

38 WARRANTY All Hanna Instruments meters are guaranteed for two years against defects in workmanship and materials when used for their intendedpurpose and maintained according to instructions. The electrodes and the probes are guaranteed for a period of six months. This warranty is limited to repair...

39 CE DECLARATION OF CONFORMITY Recommendations for Users Before using these products, make sure that they are entirely suitable for the environment in which they are used. Operation of these instruments in residential area could cause unacceptable interferences to radio and TV equipment,requiring t...

MANPHBNR3 05/98 h t t p : / / w w w . h a n n a i n s t . c o m PRINTED IN PORTUGAL