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Summary of Contents for Delta OHM HD2109.1
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Page 1: Operating Manual
English Operating manual Dissolved oxygen meters / thermometers HD2109.1 – HD2109.2 Companies / Brands of GHM www.deltaohm.com Keep for future reference. -
Page 2: Table Of Contents
CONTENTS INTRODUCTION ..............................3 KEYBOARD AND MENU DESCRIPTION ......................8 MEASUREMENT OF THE DISSOLVED OXYGEN ....................14 How to measure ..............................14 Measurement of the concentration of dissolved oxygen ..................15 Electrolyte solution and/or membrane replacement ....................15 Check the probe's status ............................18 ... -
Page 3: Introduction
The HD2109.1 and HD2109.2 models are fitted with an RS232C serial port and can transfer the ac- quired measurements to a PC or to a portable printer in real time. - Page 4 Dissolved Oxygen – Temperature HD2109.1 - 4 - HD2109 V2.4...
- Page 5 HD2109.1 1. 8-pole DIN45326 connector, input for dissolved oxygen and temperature combined probes, for Pt100 SICRAM temperature probes and direct 4-wire Pt100 probes complete with TP47 module. 2. External auxiliary power supply connector input (positive at centre). 3. Battery symbol: displays the battery charge level.
- Page 6 Dissolved Oxygen – Temperature HD2109.2 - 6 - HD2109 V2.4...
- Page 7 HD2109.2 1. 8-pole DIN45326 connector, input for dissolved oxygen and temperature combined probes, for Pt100 SICRAM temperature probes and direct 4-wire Pt100 probes complete with TP47 module. 2. External auxiliary power supply connector input (positive at centre). 3. Battery symbol: displays the battery charge level. 4.
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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 dissolved oxygen concentration, saturation index, baro- metric pressure and temperature measurements, updating them with the acquisition of new samples.
- Page 10 The instrument has an Auto-Hold function, which can be set in the MENU, that "freezes" the meas- urement automatically when it has been stable (within 1 digit) for over 10 seconds: the message HOLD is displayed. To perform a new measurement, it is necessary to press the FUNC/ENTER key. The HOLD message starts blinking, while the display follows the actual measurement trend, until it stabilizes again and the HOLD message remains still.
- Page 11 Hold function is enabled, the instrument performs the measurement and when it stabilizes it goes in HOLD mode. To update the display indication, press FUNC/ENTER. In the following figure you can see an example of the measurement process with the Auto- Hold function enabled.
- Page 12 ond intervals even if the interval is set to 0. With an interval from 1 to 3600s, continuous data transfer is started when the SERIAL key is pressed. To end the recording (LOG) and continuous data transfer operations (SERIAL with an interval greater than 0), press the same key again.
- Page 13 LOG/DumpLOG key. Please see the paragraph dedicated to data transfer on page 29. SERIAL key - only HD2109.1 SERIAL/EraseLOG key - only HD2109.2 In measurement mode, this function starts and stops the data transfer to the RS232C serial output.
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Page 14: Measurement Of The Dissolved Oxygen
EASUREMENT OF THE DISSOLVED OXYGEN The instruments work with combined probes of polarographic, with two or three electrodes, and galvanic type with integrated temperature sensor, or with temperature probes with Pt100 sensor. The dissolved oxygen probe is fitted with SICRAM module; the temperature probe can be a SICRAM type or direct 4 wires. -
Page 15: Measurement Of The Concentration Of Dissolved Oxygen
Measurement of the concentration of dissolved oxygen The probe must be calibrated periodically using the DO9709/20 (for polarographic probes DO9709SS, DO9709SM and galvanic probe DO9709SG) or DO9709/21 (for galvanic probe DO9709SS.1) calibrator. The instrument checks the dissolved oxygen probe efficiency; the "CHNG MEMBRANE AND ELECTROLYTE"... - Page 16 DO9709SM POLAROGRAPHIC PROBE 1. Remove the protective container from the head of the probe. 2. Unscrew the probe's head with the membrane permeable to oxygen. 3. If necessary, replace the membrane. 4. Fill the head of the probe with the supplied electrolyte solution. 5.
- Page 17 8. Wait approximately 2 hours before using the probe, then calibrate. ATTENTION: The electrolyte solution contains Potassium Hydroxide (KOH) and is caustic! Avoid contact with skin, use suitable gloves and protect the eyes. In case of contact, rinse immediately and thouroughly with water. Note: some residues (lead oxide and carbonate) due to the reaction of the electrolyte solution with oxygen can be visible inside the membrane;...
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Page 18: Check The Probe's Status
5. Screw the probe's head back on carefully. Check the probe's status The glass body covering the cathode of the polarographic probe and the membrane on the probe's head should not be damaged. If there are cracks in the glass body, the probe must be replaced. If the oxygen-permeable mem- brane is damaged, dirty or obstructed it must be replaced. -
Page 19: Polarographic Probe And Galvanic Probe: Differences
Polarographic probe and galvanic probe: differences To help choosing between the use of a polarographic or galvanic probe, the following table summa- rizes the main differences between the two probes. Polarographic probe Galvanic probe DO9709SM DO9709SG Polarization time After connecting the probe to the in- Polarization is not needed. -
Page 20: Pt100 Temperature Probe
(do not use water or solvents). This method also improves the response time. Instructions to connect the TP47 module for 4-wire Pt100 probes All Delta Ohm probes are provided with a connector. The HD2109.1 and HD2109.2 instruments also work with direct 4-wire Pt100 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: Direct Connection Of 4-Wire Pt100 Sensor To A Din45326 Connector
Open the two module shells: the printed circuit to which the probe must be connected is housed in- side. On the left there are the 1…4 points on which the sensor wires must be welded. The JP1…JP4 jumpers are in the center of the board. These must be left open: Not Used Ni1000 Pt1000... -
Page 22: Warnings And Operating Instructions
WARNINGS AND OPERATING INSTRUCTIONS 1. The dissolved oxygen probes can be influenced by the presence of gases and vapours, such as chlorine, sulphur dioxide, hydrogen sulphide, amines, ammonia, carbon dioxide, bromine and iodine. Such substances can get through the membrane and interfere with the measurement. Other substances such as solvents, oils, sulphurs, carbonates and algae can obstruct or degrade the membrane or corrode the electrodes. -
Page 23: 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 It appears when the dissolved oxygen or temperature measurements ex- ceed the expected ranges. - Page 24 The following table reports the indications provided by the instrument as they appear on the display, together with their description. Display indication Explanation AUTO-HOLD automatic function holding the displayed measurement battery discharged - replace it immediately BATT TOO LOW - CHNG NOW baud rate value BAUDRATE CHNG MEMBRANE AND ELECTROLYTE...
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Page 25: Low Battery Warning And Battery Replacement
LOW BATTERY WARNING AND BATTERY REPLACEMENT The battery symbol on the display constantly shows the battery charge status. To the extent that batteries have dis- charged, the symbol "empties". When the charge decreases still further it starts blinking… In this case, batteries should be replaced as soon as possible. If you continue to use it, the instrument can no longer ensure correct measurement. -
Page 26: 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 27: Serial Interface And Usb
SERIAL INTERFACE AND USB The HD2109.1 and HD2109.2 instruments are fitted with an electrically isolated RS-232C serial in- terface; the HD2109.2 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 28 Command Response Description M=Dissolved oxygen meter 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=Oxygen Schott Type of probe connected to input User ID=0000000000000000 User code (set with T2xxxxxxxxxxxxxxxx) Print instrument's heading Stop printing data PRINTOUT IMMEDIATE MODE Immediate printing of data...
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Page 29: Storing And Transferring Data To A Personal Computer
STORING AND TRANSFERRING DATA TO A PERSONAL COMPUTER The HD2109.1 and HD2109.2 instruments can be connected to a personal computer via an RS232C serial port or USB 2.0 port, and exchange data and information through the DeltaLog9 software running in a Windows operating environment. Both models can send in real time input measured values directly to a PC, through the PRINT function;... -
Page 30: The Print Function
PRINT FUNCTION The PRINT function sends the measurements taken in real time by the instrument input directly to a PC or a printer. Printing always includes four parameters. Each set of data includes: temperature in °C or °F, dissolved oxygen concentration (in mg/l), saturation index (in %) and barometric pressure (in mbar). -
Page 31: 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 32: 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 33: Instrument Technical Characteristics
INSTRUMENT TECHNICAL CHARACTERISTICS Instrument Dimensions (Length x Width x Height) 185x90x40mm Weight 470g (complete with batteries) Materials ABS, rubber Display 2x4½ digits plus symbols Visible area: 52x42mm Operating conditions Working temperature -5…50°C Storing temperature -25…65°C Working relative humidity 0…90%RH without condensation Protection degree IP66 Power Supply... - Page 34 USB interface - model HD2109.2 Type 1.1 - 2.0 electrically isolated Connections Input for dissolved oxygen and temperature probes 8-pole male DIN45326 connector RS232 serial interface 8-pole MiniDin connector USB interface (only HD2109.2) Mini-USB type B connector Mains adapter (cod. SWD10) 2-pole connector (positive at centre) Measurement of the concentration of dissolved oxygen Measurement range...
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Page 35: Technical Data Of Probes
TECHNICAL DATA OF PROBES ISSOLVED OXYGEN PROBES Model DO9709 SM DO9709 SM.5 Type Polarographic probe: Ag/AgCl anode, Platinum cathode measuring range 0…40 mg/l; 0…400% air saturation Temperature measuring range -5…45 °C Temperature sensor Pt1000 Accuracy ± 1% f.s. Response time in N <... - Page 36 Model DO9709 SS DO9709 SS.5 DO9709 SS.1 DO9709 SS.5.1 Polarographic probe, Galvanic probe, Type Silver anode, Platinum cathode Zinc anode, Silver cathode Range O 0.00…60.00mg/l 0.00…20.00mg/l Operating temperature 0…45°C 0…50°C Accuracy ±1% f.s. ±2% f.s. Membrane Replaceable Replaceable Cable length 1.6 m Cable with connector DO9709SS...
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Page 37: Emperature Probes
Pt100 EMPERATURE PROBES SENSOR USING SICRAM MODULE Model Type Application range Accuracy ±0.25°C (-196°C…+300°C) Immersion -196°C…+500°C TP472I ±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) TP473P.I Penetration -50°C…+400°C ±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 38: Order Codes
ORDER CODES HD2109.1 Kit including: instrument HD2109.1, 4 x 1.5V alkaline batteries, operating man- ual, case and DeltaLog9 software. HD2109.2 Kit including: instrument HD2109.2 datalogger, 4 x 1.5V alkaline batteries, op- erating manual, case and DeltaLog9 software. The dissolved oxygen probes, the temperature probes, the cables for the con- nection to PC or printer must be ordered separately. -
Page 39: Warranty
DO9709 SS Polarographic combined probe for measurement of O and temperature with re- placeable membrane. The kit includes: probe, two membranes, zero solution, elec- trolyte solution and DO9709/20 calibrator. Cable length 2 m. Dimensions Ø 12 mm x 120 mm. DO9709 SS.5 Polarographic combined probe for measurement of O and temperature with... - Page 40 TP47 Only connector for direct 4-wire Pt100 probes connection. 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 41 OTES - 41 - HD2109 V2.4...
- Page 42 OTES - 42 - HD2109 V2.4...
- Page 44 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 45 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 46 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 V2.4 18/05/2017...
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