Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Delta OHM HD 8706-R1
Summary of Contents for Delta OHM HD 8706-R1
- Page 1 HD 8706-R1 INSTRUCTION MANUAL...
- Page 2 HD 8706-R1...
- Page 3 HD 8706-R1 MICROPROCESSOR CONDUCTIVITY METER - THERMOMETER – 21 –...
- Page 4 ENGLISH HD 8706-R1 1 - Input A, DIN 8-pole connector. This input is suitable for the combined conduc- tivity/temperature probe and for the TP 870 series of solely temperature probes. 2 - Symbol indicating HOLD status. 3 - Display. 4 - MIN symbol, the value indicated on the display is the MIN value stored by the instrument.
- Page 5 ENGLISH SYMBOLS LIT FUNCTION DESCRIPTION BESIDES THE NUMBERS All the symbols Switches the instrument ON and OFF. are lit for a few Press once to switch on; when it is seconds after pressed again it switches the instrument switching on off.
- Page 6 ENGLISH SYMBOLS LIT FUNCTION DESCRIPTION BESIDES THE NUMBERS When the key is pressed again the instru- disappears ment returns to normal functions. MAX/MIN storage key. B flashes The maximum/minimum recording starts from the moment the REC, MIN, MAX key is pressed (the RCD symbol appears).
-
Page 7: General Information
2 GENERAL INFORMATION The HD 8706-R1 is normally supplied with the combined 4-electrode and temperature probe SPT06. The cell measurement area is bounded by a Pocan tube. A positioning key, directs correctly the insertion of the tube into the probe. - Page 8 ENGLISH For measuring temperature, probes are available for air (TP 870/A), for contact (TP 870/C), with a penetration point (TP 870/P) and for immersion (TP 870). The measuring range with these probes is from -50°C (-58°F) to +200°C (+392°F), while with the built-in sensor in the conductimetry cell measurements are limited to +90°C.
-
Page 9: Automatic Calibration
ENGLISH 3.1 AUTOMATIC CALIBRATION Automatic calibration is possible with a 0.1-mole (or 0.01-mole) solution of KCI. The temperature of the solution must be between 15°C (59°F) and 30°C (86°F), otherwise the error signal “E3” appears. a) Switch on the instrument by pressing the key. -
Page 10: Manual Calibration
ENGLISH 3.2 VARIATION OF THE REFERENCE TEMPERATURE IN CONDUCTIVITY MEASUREMENTS In conductivity measurements it is possible to change the reference tem- perature, choosing between the values of 20°C and 25°C. When the instrument leaves the factory it is set to operate with reference temperature 20°C;... -
Page 11: Temperature Compensation
ENGLISH keys, set the conductivity value determined at point c. If the conduc- tivity of the calibration solution is very different from the one used in automatic calibration, “E1” (slope >150% of the rated value) or “E2” (slope <30% of the rated value) is displayed. In both cases it is suffi- cient to press the key to cancel the error signal. - Page 12 ENGLISH compensation (in the HD 8706-R1 this may be done by setting α at 0.00, see the nex paragraph). The formula for calculating α is the following: α - 20 For the definition of the variables see figure Definition of the temperature coefficient α...
- Page 13 (that is without temperature compensation) just set α 0.00 (par. 4.1, pag. 30). e) After use rinse the probe with clean or, better distilled water. Instrument Input B Instrument Input A HD 8706-R1 2 5 4 8 1 6 7 KCELL Pt100 K=10 K=0.1...
- Page 14 ENGLISH 5.1 CONDUCTIVITY MEASUREMENT WITH TWO-ELECTRODES PROBES Two-electrodes probes with or without Pt100 temperature sensor and cell constant K ≈ K 0.1, K 1, K 10 • cm can be connected to the instrument - input B. The measuring range of these cells is indicated in the diagram which follows: µS / cm mS / cm...
- Page 15 ENGLISH Conductivity of dilute solutions Conductivity of high concentration solutions – 33 –...
- Page 16 ENGLISH 6.2 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 it is shown the conductivity trend of a number of electrolytes as a function of concentration.
-
Page 17: Error Indication
ENGLISH electrode immersed in the liquid just over the soil sediment. The con- ductivity found must be expressed in µS/cm at the temperature of 20°C (25°C). The salinity of the soil is calculated with the formula: 0.32 • 1000 where: S = salinity of the soil in 100 gr of soil 20 (25) = conductivity expressed in µS 20°C (25°C) The measured values allow the regulation of the dose fertilizer of in the... -
Page 18: Low Battery Warning And Battery Replacement
ENGLISH 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. -
Page 19: Maintenance
ENGLISH MAINTENANCE Storage conditions Temperature: -20...+60°C. Humidity: less than 90% relative humidity. Don not store the instrument in places where: 1) There is a high degree of humidity 2) The instrument is exposed to direct sunlight 3) The instrument is exposed to a source of high temperature 4) There are strong vibrations 5) There is steam, salt and/or corrosive gas. - Page 20 ENGLISH SERIAL OUTPUT FOR HD 8706-R1 To enable the serial output on the instrument, proceed as follows: 1 Insert the SUB D 9-pole female connector on the adapter cable with electronics AD RS232C in the SUB D 9-pole socket on the instrument.
- Page 21 SENSOR COD. DIMENSIONS WORKING RANGE L=1.5 m K = 0,7 SPT06 (5 µS...20 mS) ∅ 12 ∅ 17 (0...90°C) K = 3 HD 8706S (5 µS...20 mS) ∅ 18 (0...60°C) K = 0,1 L=1.5 m SPT01 (0,1 µS...1 mS) (0...50°C) K = 1 L=1.5 m SPT1...
-
Page 22: Technical Data
ENGLISH TECHNICAL DATA Measuring ranges/resolutions of the instrument: CONDUCTIVITY: 0...199.9 µS/0.1 µS; 1999 µS/1 µS; 19.99 mS/0.1 mS TEMPERATURE: 0...+90°C (+32...+194°F) with built-in sensor in the con- ductimetry cell SPT06; -50...+199.9°C (-58...392°F) with optional TP 870 resolution 0.1°C or 0.1°F PRECISION: ±0.5% end of scale ±0.5% of reading for conductivity;... - Page 23 CE CONFORMITY Safety EN61000-4-2, EN61010-1 level 3 Electrostatic EN61000-4-2 level 3 discharge Electric fast EN61000-4-4 level 3 transients Voltage variations EN61000-4-11 Electromagnetic interference IEC1000-4-3 sucseptibility Electromagnetic interference EN55020 class B emission...
- Page 24 SIT CALIBRATION CENTRE N° 124 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...
Need help?
Do you have a question about the HD 8706-R1 and is the answer not in the manual?
Questions and answers