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ENGLISH

– 36 –

LOW BATTERY WARNING AND BATTERY REPLACEMENT

If the battery voltage falls below acceptable levels, a beep sounds every 30
seconds. From that moment there remains about 1 hour autonomous oper-
ation, however the battery should be replaced as soon as possible.
To change the battery turn the battery retaining screw in an anti-clockwise
direction. After replacing it (with an ordinary 9V/006P battery), close the
door, inserting the tag on the door into the slot provided, and turn the
screw in a clockwise direction.

Ensure that the instrument is switched off before changing the bat-
tery.

FAULTY OPERATION WHEN SWITCHING ON AFTER
CHANGING THE BATTERY

Repeat the battery changing procedure, waiting for a few minutes to allow
the circuit condeser capacities to be completely discharged, then insert the
battery.

WARNING

*

If the instrument is not 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 the battery.

*

Use good quality leakproof batteries.

Warning for sensors and probes

The TP 870 series of Pt100 temperature probes are sturdy, the element on
which the platinum wire is wound is alumina. For long life avoid hard
knocks, especially at temperatures above 400°C, or thermal shocks.
The shell is made in AISI 316 stainless steel.
In the combined conductivity and temperature probe the outer tube is
made of Pocan and the temperature sensor of Platinum.
When using, check that these materials are compatible with the liquid in
which the measurement is to be taken. 
The sensor must be kept in a dry place. Check regularly that there are no
encrustations on the sensible part of the probe. Any encrustations may be
removed with a damp rag and detergent.
Particularly stubborn encrustations may be removed with kitchen type soap
pads. After you have cleaned the rings, do not touch them with your hands.

Содержание HD 8706-R1

Страница 1: ...HD 8706 R1 INSTRUCTION MANUAL...

Страница 2: ...HD 8706 R1 1 24 2 3 4 6 5 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23...

Страница 3: ...21 HD 8706 R1 ENGLISH MICROPROCESSOR CONDUCTIVITY METER THERMOMETER...

Страница 4: ...y is pressed temperature reading in C or F is selected 12 Key s this key is used during calibration to increase the value indicated on the display 13 C symbol indicates that the reading being made is...

Страница 5: ...down simultane ously with the ON OFF key when switch ing on held down HOLD for all the dura tion of the ignition the automatic cutout is disabled and power is supplied without interruption The cutout...

Страница 6: ...mum are recorded for both conductivity and temperature During RCD mode the AUTO POWER OFF function is disabled and the B sym bol flashes Press the DATA CALL MIN MAX key to read the recorded values The...

Страница 7: ...med The s and t keys are used during calibration to increase or de crease the value on the display CAL Symbol RCD led lights up Store MAX value Store MIN value Press RCD disable Press RCD enable The M...

Страница 8: ...ferent conductivity from the solution used in automatic calibration PREPARATION OF STANDARD CALIBRATION SOLUTIONS Dry the potassium chloride KCI at 105 120 C 221 248 F for two hours For a 1 mole solut...

Страница 9: ...o confirm the value displayed or adjust this value with the s and t keys before pressing CAL again The S or mS symbol stops flashing NOTE When leaving calibration mode the value on the display may inc...

Страница 10: ...th any conductivity How ever it is necessary to know the conductivity of the solution at the tempera ture at which calibration is to be carried out Follow these instructions a Immerse the conductimetr...

Страница 11: ...creas es while it increases in a liquid There therefore arises the problem that the conductivity of two liquids can not be directly compared if the measurement has not been made at the same standard r...

Страница 12: ...coefficient T of the liquid with the fol lowing procedure 4 1 SETTING THE TEMPERATURE COEFFICIENT T a Switch on the instrument by pressing the ON OFF key b Press the T key Using the s and t keys set t...

Страница 13: ...y to measure the conductivity of the liquid with reference to the temperature of 20 C 25 C If you wish to measure the absolute conductivity that is without temperature compensation just set T at 0 00...

Страница 14: ...e these there are many applications of conductivity especially for quality controls 6 1 CHECKING IMPURITIES IN WATER The most frequent applications are in the demineralization of water by dis tillatio...

Страница 15: ...ENGLISH 33 Conductivity of dilute solutions Conductivity of high concentration solutions...

Страница 16: ...TE SOLUTIONS A conductimetry control often allows the chemical physical variation of a solution to be detected In oceanography the total saline content may be determined by means of conductivity measu...

Страница 17: ...OD OF USE Do not expose the probes to gases or liquid that could corrode the sen sor material Clean the probes carefully after use Do not bend the connectors by applying upward or downward force Do no...

Страница 18: ...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 the battery Use good quality leakproof batteries War...

Страница 19: ...e of plastic so it must not be cleaned with sol vents which can spoil plastic GUARANTEE This instrument is strictly inspected before being sold However if there should be any defect due to manufacture...

Страница 20: ...printer or the computer The position of the switch inside the connector must be DCE data communication equipment Modem DTE data terminal equipment Computer 3 If you wish to send the information shown...

Страница 21: ...TP 870A 300 50 3 TP 870 400 50 12 TP 870C 400 3 230 4 230 4 150 4 230 39 COD DIMENSIONS SENSOR WORKING RANGE K 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 72...

Страница 22: ...CD 12 mm SYMBOLS ON THE DISPLAY HOLD RCD REL MAX MIN C F S mS A D CONVERSION FREQUENCY about 1 sec conversion FUNCTIONS Autorange HOLD storage of RCD MAX MIN relative mea surements automatic and or ma...

Страница 23: ...1 level 3 Electrostatic discharge EN61000 4 2 level 3 Electric fast transients EN61000 4 4 level 3 Voltage variations EN61000 4 11 Electromagnetic interference IEC1000 4 3 sucseptibility Electromagnet...

Страница 24: ...DELTA OHM SRL VIA G MARCONI 5 35030 CASELLE DI SELVAZZANO PD ITALY TEL 0039 0498977150 r a FAX 0039 049635596 e mail deltaohm tin it Web Site www deltaohm com SIT CALIBRATION CENTRE N 124...

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