Delta OHM HD2109.1 Manuel utilisateur

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Operating manual

Dissolved oxygen meters /

thermometers

HD2109.1 – HD2109.2

www.deltaohm.com

Companies / Brands of GHM

English

Keep for future reference.

HD2109 - 2 - V2.4

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

Control the zero of the probe .............................................................................................................................18

Dissolved oxygen probe storage ........................................................................................................................18

Polarographic probe and galvanic probe: differences..........................................................................................19

Firmware update for DO9709SM and DO9709SG probes ..................................................................................19

Pt100 TEMPERATURE PROBE ...................................................................................................................................20

How to measure ................................................................................................................................................20

Instructions to connect the TP47 module for 4-wire Pt100 probes ......................................................................20

Direct connection of 4-wire Pt100 sensor to a DIN45326 connector ...................................................................21

WARNINGS AND OPERATING INSTRUCTIONS..............................................................................................22

INSTRUMENT SIGNALS AND FAULTS..............................................................................................................23

LOW BATTERY WARNING AND BATTERY REPLACEMENT.......................................................................25

INSTRUMENT STORAGE.....................................................................................................................................26

SERIAL INTERFACE AND USB ...........................................................................................................................27

STORING AND TRANSFERRING DATA TO A PERSONAL COMPUTER......................................................29

THE LOGGING FUNCTION -ONLY FOR HD2109.2......................................................................................................29

CLEARING THE MEMORY -ONLY FOR HD2109.2 ......................................................................................................29

THE PRINT FUNCTION ............................................................................................................................................30

CONNECTION TO A PC........................................................................................................................................31

CONNECTION TO THE RS232C SERIAL PORT OF THE INSTRUMENT.............................................................................31

CONNECTION TO THE USB 2.0 PORT OF THE INSTRUMENT -ONLY FOR HD2109.2......................................................31

NOTES ABOUT WORKING AND OPERATIVE SAFETY..................................................................................32

INSTRUMENT TECHNICAL CHARACTERISTICS...........................................................................................33

TECHNICAL DATA OF PROBES ........................................................................................................................35

DISSOLVED OXYGEN PROBES ..............................................................................................................................35

TEMPERATURE PROBES Pt100 SENSOR USING SICRAM MODULE ............................................................................37

4-WIRE Pt100 PROBES WITH TP47 MODULE .........................................................................................................37

ORDER CODES ......................................................................................................................................................38

WARRANTY...............................................................................................................................................................39

HD2109 - 3 - V2.4

INTRODUCTION

The HD2109.1 and HD2109.2 are portable instruments with a large LCD display. They measure the

concentration of dissolved oxygen in liquids (in mg/l), the saturation index (in %) and the tem-

perature using SICRAM combined probes of polarographic, with two or three electrodes, and

galvanic type with integrated temperature sensor. Temperature only is measured by Pt100 -

SICRAM or direct 4 wires - immersion, penetration or contact probes.

Thanks to an internal pressure sensor, the instruments automatically compensate for barometric

pressure. The instrument anticipates automatic compensation of the oxygen probe membrane per-

meability and of the salinity of the liquid being examined.

The dissolved oxygen probe's quick calibration function guarantees timely correctness of the per-

formed measurements.

The dissolved oxygen and temperature probes are fitted with an automatic detection module, with

the factory calibration settings already being memorized inside.

The HD2109.2 is a datalogger. It memorizes up to 18,000 dissolved oxygen concentration, satura-

tion index measurements, barometric pressure and temperature samples which can be transferred

from the instrument connected to a PC via the RS232C serial port or USB 2.0 port. The storing in-

terval, printing, and baud rate can be configured using the menu.

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.

Printing and, for the model HD2109.2, logging always include the temperature, in °C or °F, the

concentration of dissolved oxygen in liquids (in mg/l), the saturation index (in %) and the baromet-

ric pressure (in mbar).

The Max, Min and Avg function calculates the maximum, minimum or average values.

Other functions include: the relative measurement REL, the Auto-HOLD function, and the auto-

matic turning off which can also be disabled.

The instruments have IP66 protection degree.

This manual describes the HD2109.1 and HD2109.2 models: if not otherwise specified, the de-

scription is intended to be applicable to both models.

HD2109 - 4 - V2.4

Dissolved Oxygen – Temperature

HD2109.1

HD2109 - 5 - V2.4

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.

4. Function indicators.

5. Secondary display line.

6. CAL/key: during normal operation starts the dissolved oxygen probe calibration; in the

menu, increases the current value.

7. FUNC/ENTER key: during normal operation displays the maximum (MAX), the minimum

(MIN) and the average (AVG) of current measurements; in the menu, confirms the current

selection. This updates the display measurement when the Auto-Hold function is enabled.

8. REL/key: enables the relative measurement (displays the difference between the current

value and the logged value when the key is pressed); in the menu, decreases the current

value.

9. SERIAL key: starts and ends the data transfer to the serial communication port.

10. MENU key: allows access to and exit from the menu.

11. mg/l-%-ESC key: cyclically changes the main variable measurement between:

•dissolved oxygen concentration (in mg/l),

•saturation index (in %),

•barometric pressure (in mbar).

In the menu, cancels the operation in progress without making changes.

12. °C/°F key: when the probe is not connected, allows manual modification of the temperature.

When a probe with temperature sensor is connected, pressing this key twice changes the unit

of measurement from degrees Celsius to Fahrenheit.

13. ON-OFF/AUTO-OFF key: turns the instrument on and off; when pressed together with the

CAL key, disables the automatic turn off.

14. MAX, MIN and AVG symbols.

15. Main display line.

16. Line for symbols and comments.

17. 8-pole MiniDin connector for RS232C. For the connection to PC (with cable HD2110CSNM

or C206) or printer (with cable HD2110CSNM).

HD2109 - 6 - V2.4

Dissolved Oxygen – Temperature

HD2109.2

HD2109 - 7 - V2.4

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. Function indicators.

5. Secondary display line.

6. CAL/key: during normal operation starts the dissolved oxygen probe calibration; in the

menu, increases the current value.

7. FUNC/ENTER key: during normal operation displays the maximum (MAX), the minimum

(MIN) and the average (AVG) of current measurements; in the menu, confirms the current

selection. This updates the display measurement when the Auto-Hold function is enabled.

8. REL/key: enables the relative measurement (displays the difference between the current

value and the logged value when the key is pressed); in the menu, decreases the current

value.

9. SERIAL/ERASE LOG key: starts and ends the data transfer to the serial communication

port. In the menu, clears the data contained in the instrument's memory.

10. LOG/DUMP LOG key: during normal operation, starts and ends the saving of the data in

the internal memory; in the menu, starts the data transfer from the instrument's memory to

the PC.

11. Mini-USB type B connector for USB 2.0. For the connection to PC (with cable CP23).

12. MENU key: allows access to and exit from the menu.

13. mg/l-%-ESC key: cyclically changes the main variable measurement between:

•dissolved oxygen concentration (in mg/l),

•saturation index (in %),

•barometric pressure (in mbar).

In the menu, cancels the operation in progress without making changes.

14. °C/°F key: when the probe is not connected, allows manual modification of the temperature.

When a probe with temperature sensor is connected, pressing this key twice changes the unit

of measurement from degrees Celsius to Fahrenheit.

15. ON-OFF/AUTO-OFF key: turns the instrument on and off; when pressed together with the

CAL key, disables the automatic turn off.

16. MAX, MIN and AVG symbols.

17. Main display line.

18. Line for symbols and comments.

19. 8-pole MiniDin connector for RS232C. For the connection to PC (with cable HD2110CSNM

or C206) or printer (with cable HD2110CSNM).

HD2109 - 8 - V2.4

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". When the instrument is in standard measurement mode, the main

function is active. In the menu or in conjunction with the FUNC key, the secondary function is en-

abled.

The pressing of a key is accompanied by a short confirmation beep: a longer beep sounds if the

wrong key is pressed.

Each key specific function is described in detail below.

ON-OFF/Auto-OFF key

The instrument is turned on and off using the ON/OFF key. The turning on enables all display seg-

ments for a few seconds. An auto-test follows which analyses the type of probe connected, and

reads its calibration information. In cases of a dissolved oxygen probe, the electrode calibration co-

efficient (SLOPE) is also displayed: this value must be between 0.500 and 1.500. A value close to

1.500 indicates an exhausted probe (see page 14 for how to proceed). Finally, the instrument is set

for normal measurement.

If a temperature probe is connected, the main line displays a dotted line (- - - -).

The connected probe's data are captured upon turning the instrument on: when the probe is

inserted into a functioning instrument, the "NEW_PROB_DET" message appears: turn the

instrument off and then back on again.

Replace the probes when the instrument is off.

Automatic turning off

The instrument has an AutoPowerOff function that automatically turns the instrument off after about

8 minutes if no key is pressed during the intervening time. The AutoPowerOff function can be dis-

abled by holding the CAL/key pressed down when turning the instrument on: the battery symbol

will blink to remind the user that the instrument can only be turned off by pressing the <ON/OFF>

key.

HD2109 - 9 - V2.4

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.

The acquisition frequency is once a second. To switch from dissolved oxygen to barometric pres-

sure and to saturation index use the "mg/l-%-ESC" key.

In the menu, the ENTER key confirms the current parameter and then goes to the next one.

The MAX, MIN and AVG measurements remain in the memory until the instrument is on, even af-

ter exiting the calculation function. To reset the previous values and restart with a new measurement

session, press FUNC until the message "FUNC CLR" appears, then use the arrows to select YES

and confirm using ENTER.

The dissolved oxygen concentration (or barometric pressure or saturation index) and tem-

perature values are displayed at the same time. According to settings in the "RCD Mode"

menu item, the maximum, minimum and average indications have different meanings: please

see the description of this MENU key below.

Attention: the data captured using the Record function cannot be transferred to the PC.

CAL /key

It increases the current parameter when used in the menu; when used in measurement mode, it

starts the dissolved oxygen probe calibration (please see the chapter dedicated to calibration on

page 15).

°C/°F key

The temperature value measured by the sensor present in the dissolved oxygen probe is used to cal-

culate the saturation index and the dissolved oxygen concentration in the liquid being measured.

The key changes the unit of measurement between Centigrade or Fahrenheit.

mg/l -% / ESC key

It changes the main variable measurement between dissolved oxygen concentration (in mg/l),

barometric pressure (in mbar), and saturation index (in %).

HD2109 - 10 - V2.4

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.

In the menu, the key clears or cancels the active function (ESC).

REL/key

In measurement mode, it displays the difference between the current value and that measured on

pressing the key. The REL message appears on the display; press the key again to return to the

current measurement.

When used in the menu, it decreases the current variable value.

MENU Key

The first menu item is accessed by initially pressing on the MENU key; press ENTER to go to the

following items. To modify the item displayed, use the arrow keys (and ). The current value is

confirmed by pressing the ENTER key and the display moves on to the next parameter. If pressing

ESC the setting is cancelled.

To exit the menu, press the MENU key at any time.

The menu items are listed in this order:

1) Sample ID (Identifier of the sample being measured): it is an automatically increased

progressive number associated with the single PRINT function (print interval set to 0) for

the printing of labels. The index appears in the single sample printing together with date,

time, dissolved oxygen and temperature measured values. This menu item allows the value

of the first sample to be set: each time the PRINT key is pressed, the identification ID in the

printing is increased by 1 allowing progressive measurement of all measured samples. If the

Auto-Hold function, described below in this chapter, is enabled, the print time interval is

forced to zero. Pressing SERIAL only causes the print to occur when the measurement has

stabilized (HOLD symbol still). Later, it is possible to repeat the print at will, but while the

HOLD mode is on, the sample identifier number is not increased. This is useful when more

labels must be printed with the same identification code without increasing the code each

time.

The message "SMPL ID UNT=RSET SER=PRNT" is scrolled in the comment line: using

the arrows (and ) the currently measured sample identifier value can be changed.

By holding the °C/°F key down the proposed number is set to zero.

The instrument's heading information will be printed using the SERIAL key.

2) AUTO-HOLD function: the instrument normally operates in continuous view mode (de-

fault setting). In this mode the displayed measurement is updated every second. If the Auto-

Ce manuel convient aux modèles suivants

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