Delta HD2105.2 Operating Manual
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Delta HD2105.2 Operating Manual

Ph meters / thermometers
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English
Companies / Brands of GHM

Operating manual

pH meters / thermometers
HD2105.1 – HD2105.2
www.deltaohm.com
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  • Page 1: Operating Manual

         English Operating manual pH meters / thermometers HD2105.1 – HD2105.2 Companies / Brands of GHM www.deltaohm.com Keep for future reference.

  • Page 2: Table Of Contents

    KEYBOARD AND MENU DESCRIPTION ......................8 pH MEASUREMENT ..............................15 ......................16 UTOMATIC OR MANUAL COMPENSATION ..........................17 ELECTRODE CALIBRATION Temperature characteristics of Delta OHM buffer solutions ................19 Pt100, Pt1000 1000 T ..............20 IRECT INPUT INTO EMPERATURE PROBES How to measure ..............................20 Instructions to connect the TP47 connector for 4-wire Pt100, Pt1000 and Ni1000 probes ........20 Direct connection of 4-wire Pt100 sensors ......................22...

  • Page 3: Introduction

    2.0 port. The storing interval, printing, and baud rate can be configured using the menu. The HD2105.1 and HD2105.2 models are fitted with an RS232C serial port and can transfer the ac- quired measurements in real time to a PC or to a portable printer.
  • Page 4 Temperature-pH meter HD2105.1 - 4 - HD2105 V2.3...
  • Page 5 HD2105.1 1. BNC connector for the pH/mV electrode. 2. 8-pole DIN45326 connector, input for Pt100 temperature probes with SICRAM module, 4-wire direct Pt100 probes, 2-wire Pt1000 probes complete with TP47 module. 3. External auxiliary power supply connector input. 4. Battery symbol: displays the battery charge level. 5.
  • Page 6 Temperature-pH meter HD2105.2 - 6 - HD2105 V2.3...
  • Page 7 HD2105.2 1. BNC connector for the pH/mV electrode. 2. 8-pole DIN45326 connector, input for Pt100 temperature probes with SICRAM module, 4-wire direct Pt100 probes, 2-wire Pt1000 probes complete with TP47 module. 3. External auxiliary power supply connector input. 4. Battery symbol: displays the battery charge level.

  • Page 8: Keyboard And Menu Description

    KEYBOARD AND MENU DESCRIPTION Foreword The instrument keyboard is composed of single-function keys, like the MENU key, and double- function keys such as the ON-OFF/Auto-OFF key. In the double-keys, the function in the upper part is the “main function”, while the one in the bottom part is the “secondary function”.
  • Page 9 The automatic turning off function is disabled when external power is used. On the other hand, it cannot be disabled when the batteries are discharged. FUNC/ENTER key During normal measurement this enables the display and logging of the maximum (MAX), mini- mum (MIN) and average (AVG) value of the pH, mV and temperature measurements, updating them with the acquisition of new samples.
  • Page 10 To exit the menu, press the MENU key at any time. The menu items are listed in this order: 1) Management of memorized data (only HD2105.2): the message “LOG_DUMP_or_E- RAS” (Transfer data or erase) is scrolled in the comment line. The center figure reports the number of free memory pages (FREE).
  • Page 11 (SERIAL with an interval greater than 0), press the same key again. 5) Sleep_Mode_LOG (Automatic turning off during recording) (only HD2105.2): this function controls the instrument's automatic turning off during logging, occurring between the capture of a sample and the next one. When the interval is lower than 60 seconds, the in- strument will always remain on.
  • Page 12 Note: even if Sleep_Mode_LOG=YES is selected, the instrument does not turn off for less than one minute intervals. 6) LAST CAL m/d h/m (Last pH calibration): the display shows the month and day (m/d) in the main line, and the hour and minutes (h/m) in the secondary line of the last pH electrode calibration.
  • Page 13 If the Auto-HOLD function is enabled (please see the menu), the data logging is disabled. The HD2105.2 can turn off during logging between a capture and the next one: the function is controlled by the Sleep_Mode_LOG parameter. When the logging interval is less than one minute, the logging instrument remains on;...
  • Page 14 >>> Dump LOG - only HD2105.2 When the LOG key is pressed after the MENU key, the transfer of the logged data on the serial port is started. Please see the paragraph dedicated to data transfer on page 31. SERIAL key - only HD2105.1 SERIAL/EraseLOG key - only HD2105.2...

  • Page 15: Ph Measurement

    MEASUREMENT The instrument works with pH measurement electrodes, redox potential measurement electrodes (ORP), and specific ion electrodes. The pH measurement must always be accompanied by a tem- perature measurement. The probes with 4-wire Pt100, 2-wire Pt1000 or Ni1000 sensors may be used for measuring temperature or for the automatic compensation of the Nernst coefficient with the pH electrode.

  • Page 16: Automatic Or Manual Ph Compensation

    UTOMATIC OR MANUAL COMPENSATION In a correct measurement of pH, the results need to be expressed together with the temperature value at which the reading is performed. The electrode slope varies according to the temperature in a known mode according to Nernst law: e.g., a 1pH variation, that at 25°C means 59.16mV, at 100°C means 74.04mV.

  • Page 17: Ph Electrode Calibration

    ELECTRODE CALIBRATION The electrode calibration is used to compensate the zero potential and slope deviations to which the electrode is subject with time. The calibration frequency depends on the accuracy desired by the user and by the effects that the measured sample have on the electrode.
  • Page 18 5) To proceed with the calibration press ENTER. The electrode offset mV value (OFFS) is shown on the display for few seconds. After a few seconds the instrument shows the measurement again, corrected according to the new calibration, but remains in calibration mode. Pressed repeatedly the ENTER key allows the calibration on the point to be repeated, for exam- ple, in order to obtain a more stable value.

  • Page 19: Temperature Characteristics Of Delta Ohm Buffer Solutions

    The 13 standard buffers reported in the table on page 17 are memorized in the instruments with relevant variations according to temperature: The characteristics of the three Delta Ohm standard buffers at 6.86pH, 4.01pH and 9.18pH (@25°C) are reported below.

  • Page 20: Direct Input Into Pt100, Pt1000 And N I 1000 Temperature Probes

    Instructions to connect the TP47 connector for 4-wire Pt100, Pt1000 and Ni1000 probes All Delta Ohm probes are provided with a connector. The HD2105.1 and HD2105.2 instruments also work with direct 4-wire Pt100, Pt1000 and Ni1000 probes manufactured by other producers: for the instrument connection is prescribed the TP47 connector to which the probe's wires should be welded.
  • Page 21 Do the following to open the module and connect a probe: unscrew the fairlead and extract the gasket, remove the label using a cutter, unscrew the ring on the opposite side as illustrated in the figure: Open the two module shells: the printed circuit to which the probe must be connected is housed in- side.

  • Page 22: Direct Connection Of 4-Wire Pt100 Sensors

    Ensure the welds are clean and perfect. Once the welding operation is complete, close the two shells, insert the gasket in the module, and screw the fairlead. At the other end of the module, enter the ring with the O-Ring as indicated in the picture. Make sure the cable is not twisted while you are screwing the fairlead.

  • Page 23: Warnings And Operating Instructions

    WARNINGS AND OPERATING INSTRUCTIONS 1. Do not expose the probes to gases or liquids that could corrode the material of the sensor or the probe itself. Clean the probe carefully after each measurement. 2. Do not bend the probe connectors or force them upward or downward. 3.

  • Page 24: Notes On The Use Of The Ph Electrodes

    OTES ON THE USE OF THE ELECTRODES The average life of a pH electrode is about 1 year, depending on the use and maintenance. The electrodes used at high temperatures or in strong alkaline environments normally have a shorter life. The new electrodes should be conditioned for half a day immersed in a 6.86pH or 4pH buffer.

  • Page 25: Instrument Signals And Faults

    INSTRUMENT SIGNALS AND FAULTS The following table lists all error indications and information displayed by the instrument and sup- plied to the user in different operating situations: Display indications Explanation This message appears if the pH measurement exceeds the -2.000pH…19.999pH limits, if the mV measurement exceeds the ±2.4V limits, if the temperature probe, already detected by the instru- ment, is disconnected.
  • Page 26 The following table reports the indications provided by the instrument as they appear on the display, together with their description. Display indications Explanation >>>_LOG_DUMP_or_ERAS transfer or erase data type of probe connected >>>_PRBE_TYPE automatic function holding the displayed measurement AUTO-HOLD BATT TOO LOW - CHNG NOW battery discharged - replace it immediately BAUDRATE >>>...

  • Page 27: Low Battery Warning And Battery Replacement

    The instrument issues a long beep and turns off. In this case, replace the batteries in order to turn the instrument back on. In order to avoid data loss, the logging session is ended, if the HD2105.2 is logging and battery voltage falls below the minimum operating level.

  • Page 28: Instrument Storage

    ALFUNCTIONING UPON TURNING ON AFTER BATTERY REPLACEMENT After replacing the batteries, the instrument may not restart correctly; in this case, repeat the opera- tion. After disconnecting the batteries, wait a few minutes in order to allow circuit condensers to discharge completely; then reinsert the batteries. ARNING ABOUT BATTERY USE •...

  • Page 29: Serial Interface And Usb

    SERIAL INTERFACE AND USB The HD2105.1 and HD2105.2 instruments are fitted with an electrically isolated RS-232C serial in- terface; the HD2105.2 also has an USB 2.0 interface. The following serial cables can be used: • HD2110CSNM: serial connection cable with 8-pole MiniDin connector on one end and 9-pole Sub D connector on the other end;...
  • Page 30 Command Response Description M=pH / Thermometer Model description SN=12345678 Instrument serial number Firm.Ver.=01-01 Firmware version Firm.Date=2004/06/15 Firmware date cal 0000/00/00 00:00:00 Calibration date and time Probe=Sicram Pt100 Type of probe connected to input Probe SN=11119999 Probe serial number Probe cal.=2004/01/12 Probe calibration date User ID=0000000000000000 User code (set with T2xxxxxxxxxxxxxxxx)

  • Page 31: Storing And Transferring Data To A Personal Computer

    Windows operating environment. Both models can send in real time input measured values directly to a PC, through the PRINT function; the HD2105.2 can also store the values measured by using the Logging function (LOG key) in its internal memory. If necessary, the data stored in the memory can be transferred to a PC later.

  • Page 32: The Print Function

    PRINT FUNCTION The PRINT function sends the measurements taken in real time by the instrument inputs directly to a PC or a printer. Print data units of measurements are the same as those used on the display. Print- ing always includes two parameters. Each pairs data is composed of: temperature in °C or °F, pH or mV.

  • Page 33: Connection To A Pc

    SERIAL PORT OF THE INSTRUMENT 1. The measurement instrument must be switched off. 2. Using the Delta Ohm HD2110CSNM or C.206 cable, connect the measurement instrument to the first free RS232C (COM) or USB serial port of the PC. 3. Turn on the instrument and set the baud rate to 38400 (MENU >> ENTER until the Baud Rate parameter >>...

  • Page 34: Notes About Working And Operative Safety

    NOTES ABOUT WORKING AND OPERATIVE SAFETY Authorized use The technical specifications as given in chapter "TECHNICAL CHARACTERISTICS" must be ob- served. Only the operation and running of the measuring instrument according to the instructions given in this operating manual is authorized. Any other use is considered unauthorized. General safety instructions This measuring system is constructed and tested in compliance with the EN 61010-1:2010 safety regulations for electronic measuring instruments.

  • Page 35: Instrument Technical Characteristics

    Time Date and time Schedule in real time Accuracy 1min/month max drift Measured values storage - model HD2105.2 Type 2000 pages containing 17 samples each Quantity 34000 pairs of measurements composed of [pH or mV] and [°C o °F].
  • Page 36 USB interface - model HD2105.2 Type 1.1 - 2.0 electrically isolated Connections Input module for the temperature probes 8-pole male DIN45326 connector pH/mV input Female BNC RS232 serial interface 8-pole MiniDin connector USB interface (only HD2105.2) Mini-USB type B connector Mains adapter (cod.

  • Page 37: Technical Data Of Probes

    TECHNICAL DATA OF PROBES pH E LECTRODES MEASURING RANGE ORDER CODE DIMENSIONS AND USE 0…14pH / 0…80°C / 2bar Glass body - GEL filled 1 ceramic diaphragm Waste water, Drinking wa- KP20 ter, Water emulsions, Gal- vanic, Fruit-juices, Water suspensions, Paints, Titra- tion, Varnish.
  • Page 38 MEASURING RANGE ORDER CODE DIMENSIONS AND USE 0…14pH / 0…80°C / 2bar Glass body– GEL filled 1 ceramic diaphragm Paints, Varnish, Drinking wa- KP62 ter, Water emulsions, Fruit- juices , Galvanic, Water sus- pensions, Titration, Waste water. 0…14pH / 0…80°C / 1bar Glass body Liquid reference KCl 3M 1 ceramic diaphragm...

  • Page 39: Redox Electrodes

    MEASURING RANGE ORDER CODE DIMENSIONS AND USE 0…14pH / 0…80°C / 1bar Glass body – Liquid refer- ence KCl 3M Teflon ring diaphragm. KP100 pH combined electrode, flat membrane, S7 connector glass body, for skin, leather, paper. EDOX LECTRODES MEASURING RANGE ORDER CODE DIMENSIONS AND USE...

  • Page 40: Temperature Probes Pt100 Sensor Using Sicram Module

    Pt100 SICRAM EMPERATURE PROBES SENSOR USING MODULE Model Type Application range Accuracy ±0.25°C (-196°C…+300°C) TP472I Immersion -196°C…+500°C ±0.5°C (+300°C…+500°C) TP472I.0 Immersion -50°C…+300°C ±0.25°C 1/3 DIN – Thin Film ±0.25°C (-50°C…+300°C) Penetration -50°C…+400°C TP473P.I ±0.5°C (+300°C…+400°C) TP473P.0 Penetration -50°C…+300°C ±0.25°C 1/3 DIN - Thin Film TP474C.0 Contact -50°C…+300°C...

  • Page 41: Order Codes

    Kit including: instrument HD2105.1, 4 x 1.5V alkaline batteries, operating man- ual, case and DeltaLog9 software. HD2105.2 Kit including: instrument HD2105.2 datalogger, 4 x 1.5V alkaline batteries, op- erating manual, case and DeltaLog9 software. pH/mV electrodes, temperature probes, standard reference solutions and ca- bles have to be ordered separately.
  • Page 42 KP70 Combined pH electrode micro, diam.6.5mm, GEL filled, bread, mixtures, cheese, etc., with screw connector S7, glass body. KP80 Combined pointed pH electrode, electrolyte, with screw connector S7, glass body. KP100 Glass body – Liquid reference KCl 3M, Teflon ring diaphragm pH combined electrode, flat membrane, S7 connector, glass body, for skin, leather, paper.
  • Page 43 SICRAM EMPERATURE PROBES COMPLETE WITH MODULE TP472I Immersion probe, sensor Pt100. Stem Ø 3 mm, length 300 mm. Cable length 2 metres. TP472I.0 Immersion probe, sensor Pt100. Stem Ø 3 mm, length 230 mm. Cable length 2 metres. TP473P.I Penetration probe, sensor Pt100. Stem Ø 4mm, length 150 mm. Cable length 2 metres.
  • Page 44 Only connector for probe connection: Pt100 direct 4 wires, Pt1000 and Ni1000 2 wires. DELTA OHM metrology laboratories LAT N° 124 are accredited by ACCREDIA for Tem- perature, Humidity, Pressure, Photometry / Radiometry, Acoustics and Air Velocity. They can supply calibration certificates for the accredited quantities.
  • Page 45 OTES - 45 - HD2105 V2.3...
  • Page 46 OTES - 46 - HD2105 V2.3...

  • Page 48: Serial Number

    All DELTA OHM instruments are subject to accurate testing, and are guaranteed for 24 months from the date of purchase. DELTA OHM will repair or replace free of charge the parts that, within the warranty period, shall be deemed non efficient according to its own judgement. Complete replacement is excluded and no damage claims are accepted.
  • Page 49 GHM GROUP – Delta OHM | Delta Ohm S.r.l. a socio unico Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | info@deltaohm.com The quality level of our instruments is the result of the constant development of the product. This may produce some differences between the information written in this manual and the instrument you have purchased.
  • Page 50 GHM GROUP – Delta OHM | Delta Ohm S.r.l. a socio unico Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | info@deltaohm.com V2.3 28/08/2017...

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