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To change the battery, unscrew the cross-headed screw on the door of the
battery compartment,

open the door,

ENGLISH

– 47 –

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Содержание HD 9213-R1

Страница 1: ...HD 9213 R1 INSTRUCTION MANUAL...

Страница 2: ...1 3 4 5 2 8 13 11 10 9 6 7 12 HD 9213 R1...

Страница 3: ...29 HD 9213 R1 ENGLISH MICROPROCESSOR CONDUCTIVITY METER THERMOMETER...

Страница 4: ...e value to be set during the para meter setting phase 8 Symbol indicating that the temperature reading is in F 9 Symbol indicating that the temperature reading is in C 10 ON OFF key for switching the...

Страница 5: ...l taneously with the ON OFF key when switching on the AUTO POWER OFF function is disabled and power is supplied without inter ruption To switch off press the ON OFF key The battery symbol flashes duri...

Страница 6: ...tested giving a reading that may be expressed in S or in mS When used in combination with others the key also carries out other functions When pressed during conductivity measurement this key enables...

Страница 7: ...proceed as follows switch on the instrument with the ON OFF key holding down the C F key until all the symbols disappear then release the C F key The K symbol flashes 2 REFERENCE TEMPERATURE 20 C or 2...

Страница 8: ...together with a certain tempe rature probe The two points on the scale are calibrated with a calibra tion furnace PROCEDURE FOR ENABLING AND CALLING ONE OF THE THREE STORED CALIBRATIONS To select code...

Страница 9: ...e to the instrument insert it in the calibration furnace at 0 C corresponding to the first calibration point then set the correct value on the display using the 1and 2keys Insert the temperature probe...

Страница 10: ...cm 105 94 mS cm 23 C 1 359 mS cm 12 39 mS cm 107 89 mS cm 24 C 1 386 mS cm 12 64 mS cm 109 84 mS cm 25 C 1 413 mS cm 12 88 mS cm 111 80 mS cm AUTOMATIC CALIBRATION Automatic calibration is possible wi...

Страница 11: ...that the electrodes are covered with liquid Switch on the instrument by pressing the ON OFF key b Press the T key The temperature coefficient used for calculating the temperature compensation in condu...

Страница 12: ...temperature different from 20 C 25 C an approximate assessment of the conductivity of the liquid at 20 C 25 C may be obtained by means of tem perature compensation defined by the following formula se...

Страница 13: ...ing procedure SETTING THE TEMPERATURE COEFFICIENT T To set the temperature coefficient T proceed as follows Switch on the instrument by pressing the ON OFF key choose the measu ring unit C or F then p...

Страница 14: ...2070 1 50 45 2087 1 61 50 2073 1 74 NaCl 5 676 2 17 10 1211 2 14 15 1642 2 12 20 1957 2 16 25 2135 2 27 Concentra Conductivity Substance tion 104 S cm 1 Na2SO4 5 409 2 36 10 687 2 49 15 886 2 56 Na2C...

Страница 15: ...perature coefficient d Press the key to measure the conductivity of the liquid with reference to the temperature of 20 C or 25 C If you wish to measure the absolute conductivity that is without temper...

Страница 16: ...do DETERMINING THE CONCENTRATION OF A SOLUTION If there is only one electrolyte in a solution its concentration may be deter mined by measuring the conductivity For example the graphs above show the...

Страница 17: ...ENGLISH 43 Conductivity of dilute solutions Conductivity of high concentration solutions...

Страница 18: ...be determined by measuring con ductivity SALINITY OF THE SOIL It is a known fact that for different types of plants flowers and cereals there are optimum soil salinity values Conductivity measuring al...

Страница 19: ...ivity calibration is wrong because the slope calculation gives a value 30 of the rated value E3 The temperature of the calibration solution is not between 15 C 59 F and 30 C 86 F Calibration is inadmi...

Страница 20: ...ly for short periods In order to obtain a reliable measurement avoid too sudden variations in temperature Measurements on non metal surfaces require a great deal of time on account of their low heat c...

Страница 21: ...To change the battery unscrew the cross headed screw on the door of the battery compartment open the door ENGLISH 47...

Страница 22: ...g the tag on the door into the slot provided then fasten the retaining screw on the door Ensure that the instrument is switched off before changing the bat tery When disposing of the old battery place...

Страница 23: ...instrument WARNINGS If the instrument is not to be used for a long time the battery must be removed If the battery is flat it must be replaced immediately Take steps to avoid leakage of liquid from t...

Страница 24: ...BLOCK DIAGRAM ENGLISH 50 AMPLIFIER LINEARIZED OUTPUT A D CONVERTER MICROPROCESSOR LCD Pt100 SQUARE WAVE GENERATOR KEYBOARD E PROM 2 LOW BATTERY DETECTOR FOUR RANGE AMPLIFIER POWER SUPPLY...

Страница 25: ...C5 16 C 14 R C 1 3 C 1 3 C 8 C1 11 C2 R R7 C 25 1 2 R C 9 1 2 R U3 C 1 2 R 15 R 14 R4 7 R 49 C 24 R 44 R4 8 R3 6 R 35 R3 C 1 0 R8 R9 R 20 C 9 4B R4 U4 R4 2 U7 Q3 Q4 R 17 U5 2 R3 R 23 O1 R 24 R 22 R 2...

Страница 26: ...ENGLISH 52 ARRANGEMENT OF COMPONENTS C11 R46 C34A Y1 U10 C27 C26 BT1 Q1 JP2 C20 C16 C30 C29 C21 C6 C7 C3 C4 U2 JP1 R43 R41 R37 R39 R40 R38...

Страница 27: ...electrode and temperature probe from 5 S to 20 mS with automatic change of scale temperature from 0 C to 90 C Compatibility of the combined probe with 4 electrodes the electrodes are made of platinum...

Страница 28: ...complete with zinc carbon battery SPT13 combined probe with 4 electrodes instruc tions manual case SPT13 Combined Pocan temperature conductivity probe with 4 electrodes for HD 9213 R1 HD 9213S Combine...

Страница 29: ...0 1 SPT01 0 1 S 1 mS 0 50 C K 1 SPT1 10 S 10 mS 0 50 C K 10 SPT10 100 S 200 mS 0 50 C TP9AP 70 400 C 72 120 2 12 L 1 5 m D 5 72 120 2 12 L 1 5 m D 5 72 120 4 6 12 L 1 5 m D 5 5 61 K 0 7 SPT13 5 S 20 m...

Страница 30: ...rodes and all accessories Furthermore the guarantee is not valid if the instrument has been repaired or tampered with by unauthorized third par ties or adjusted for faults or casual checking The guara...

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