ADWA AD630 User guide

USER MANUAL

AD 630

DO & T emperature

Waterpr oof Meter

with Galvanic Probe

www.adwainstruments.com

Dear Customer,
Thank you for choosing an Adwa product. Please read carefully

this manual before starting operations. This instrument is in
compliance with the EMC directive 2004/108/EC and its
standards, and Low Voltage Directive 2006/95/EC and its
standards for electrical equipments.
For more technical information, please e-mail us at
[email protected].

WARRANTY

Adwa warrants this product to be free of defects in material
and workmanship as stated in the operating manual. If repair
or adjustment is necessary and has not been the result of
abuse, misuse or improper handling within the warranty pe­riod, please contact your dealer or the nearest Adwa Of fice for
the RGA (Return Goods Authorization) number to put on the
outside of your package. W arranted service will be made with­out charge. The meter is warranted for a period of 2 years,
while probes are warranted for 6 months. The warranty pe­riod commences from the original date of sale. Warranty is
only valid when the product is used under normal conditions
and in accordance with the instruction manual. The warranty
is void if the instrument is repaired or serviced by unautho­rized personnel, not used in accordance to the instructions, or
if non-Adwa accessories such as buffer solutions, probes,
etc. are used in conjunction with the meter. Adwa will not be
held responsible for any accident whether directly or indi­rectly, caused by the use of this instrument.

2

TABLE OF CONTENTS

Introduction ................................................................ 4

Technical Data .......................................................... 6

Front and Top Panels................................................ 8

Operational Guide.................................................... 10

DO Calibration ........................................................ 14

Temperature Adjustment ........................................ 19

Setup ........................................................................ 20

Good Laboratory Practice ....................................... 29

Log-on-demand........................................................ 31

Hold function ........................................................... 35

PC Interface ............................................................ 36

Battery Replacement .............................................. 36

Probe and Membrane Maintenance ....................... 38

Probes, Solutions and Accessories ......................... 39

3

INTRODUCTION

AD630 is a heavy-duty portable waterproof meter for
DO (Dissolved Oxygen) and temperature measure­ments, designed to provide laboratory results and
accuracy even under harsh industrial conditions.

Main features include:

• DO readings displayed in ppm or % saturation units

• DO calibration at 1 or 2 standard points (0 and 100%),
or at 1 custom point (>20%)

• Galvanic DO probe with built-in temperature sensor

• Automatic temperature compensation

• Log-on-demand

• Setup mode for setting altitude & salinity compensa­tion factors, temperature measure unit (°C or °F), serial
communication parameters, date & time, auto-off, in­strument ID code

• HOLD feature to freeze stable reading on the LCD

• GLP feature to view last calibration data

• PC interface via RS232 port

4

This model is supplied complete with:

• AD8001/3 galvanic DO probe with built-in tempera-

ture sensor, DIN connector and 3 m cable

• Spare DO membrane with O-ring

• Scouring pad for cleaning the probe

• 1.5 V AA alkaline batteries (4 pcs)

• User manual

5

TECHNICAL DATA

Range 0.00 to 45.00 ppm O

2

0.0 to 300.0 % saturation

0.0 to 50.0°C / 32.0 to 122.0°F

Resolution 0.01 ppm / 0.1%

0.1°C / 0.1°F

Accuracy ±1.5% f.s. (DO)

±0.5°C / ±1.0°F

DO Calibration

Automatic, at 1 or 2 standard points (0 and 100%)

or 1 custom point (> 20%)

Temperature Calibration

User offset adjustment

Temperature Compensation

Automatic from 0 to 50°C

Altitude Compensation

0 to 4000 m (resolution 100 m)

Salinity Compensation

0.0 to 50.0 g/l (resolution 0.1 g/l)

Log-on-demand Up to 100 samples
PC Interface RS232 port

6

Probe (included) AD8001/3

galvanic DO probe with built-in

temperature sensor, DIN connector

and 3 m cable

Environment 0 to 50°C (32 to 122°F)

RH max. 100% non-condensing

Power Supply

4 x 1.5 V AA, alkaline battery

Battery Life

Approx. 200 hours of continuous use

Auto-off User selectable: 5 minutes or disabled
Dimensions 188 x 96 x 70 mm
Weight 460 g

7

FRONT AND TOP PANELS

8

1. ON/OFF key, to turn the instrument ON and OFF

2. HOLD/CLR key, to freeze stable reading on the

LCD and clear logged data

3. CAL/SETUP key , to enter/exit calibration mode and

enter/exit SETUP mode

4. CFM key, to confirm value

5. SHIFT key, to activate the key second function.

Press first SHIFT and then the selected key. The
SHIFT tag is displayed until the second key is
pressed

6. DOWN arrow/MRCL key, to manually decrease

the value of temperature or other parameters, and
enter/exit the logged data viewing mode

7. UP arrow/STORE key, to manually increase the

value of temperature or other parameters, and to
store measured data

8. RANGE/GLP key, to select measurement range

or switch focused data and display GLP information

9. Liquid Crystal Display (LCD)

10. RS232 connector

11. DIN connector for DO probe

9

OPERATIONAL GUIDE

CONNECTIONS

• The meter is supplied complete with four 1.5 V AA

alkaline batteries. Remove the rear cover, unwrap the
batteries and install them while paying attention to the
correct polarity (see “Battery Replacement” section).

• Connect the DO probe to the DIN socket on the top

of the instrument.

• The DO probe features a built-in temperature sensor

for temperature measurement and compensation.

PROBE PREPARATION

The DO probe is shipped dry. To hydrate the probe and
prepare it for use proceed as follows:

• Remove the black & red plastic cap. This cap is used

for shipping purposes only.

• Insert the supplied O-ring in the

membrane.

• Rinse the supplied membrane with electrolyte while

shaking it gently . Refill with clean electrolyte. Gently
tap the membrane over a surface to ensure that no air

10

bubbles remain trapped. T o avoid damaging the mem­brane, do not touch it with your fingers.

• With the sensor facing down screw the cap clockwise

to the end of the threads. Some electrolyte will over­flow .

INSTRUMENT START-UP

• Turn the instrument on by pressing the

ON/OFF button.

• At start-up the display shows all the used segments

for a few seconds, then enters the measurement mode.

• If the probe is disconnected, the meter will display only

dashes “----”.

11

SALINITY AND ALTITUDE COMPENSATION

If the sample contains significant concentration of salin­ity or if you are performing measurements at an altitude
different from sea level, the read out values must be
corrected, taking into account the lower degree of
oxygen solubility in these situations (see “Setup” sec­tion for details).

Remember to set the altitude and/or the salinity before
taking any DO measurements. The meter will auto­matically compensate for these factors.

DO MEASUREMENTS

Make sure that the instrument has been calibrated and
the protective cap has been removed.

• Immerse the tip of the probe in the sample to be tested
and allow for the reading to stabilize.

• The DO value is displayed on the primary LCD and
the temperature on the secondary LCD.

• To select the desired unit (% or ppm), press RANGE.

12

For accurate DO measurements, a water movement of

0.3 m/s is required. This is to ensure that the oxygen-

depleted membrane surface is constantly replenished. A
moving stream will provide adequate circulation.
The use of a magnetic stirrer to ensure a certain fluid
velocity is recommended.

TEMPERATURE MEASUREMENTS

The DO probe features a built-in temperature sensor,
for temperature measurement and compensation.
The temperature value is displayed on the secondary
LCD level.
Allow the probe to reach thermal equilibrium before tak­ing any measurement. This can take several minutes.
The greater the difference between the temperature at
which the probe was stored and the temperature of the
sample, the longer the time will be.

Note: If the display shows only dashes “----”, the DO

probe is not properly connected or the tempera­ture is out of range. This can also indicate a bro­ken probe cable.

13

DO CALIBRATION

It is recommended to calibrate the instrument fre­quently, especially if high accuracy is required.
Before proceeding with the calibration, make sure the
probe is ready for measurements (see “Probe prepa­ration” paragraph on page 10), i.e. the membrane cap
is filled with electrolyte and the probe is connected to
the meter and properly polarized.
The instrument can be calibrated at 1 or 2 standard
points, 0 and 100% (zero & slope), or at 1 custom
point (>20%, slope calibration only).
The zero calibration is very stable, and needs to be
performed only when the probe or the membrane is
replaced.
The slope calibration is more critical, and it is recom­mended to perform the related procedure every week.

STANDARD CALIBRATION
Preparation

• Pour small quantity of AD7040 zero oxygen solution
into a beaker.

• Make sure the probe is ready for measurements, i.e.
the membrane is filled with electrolyte and the probe
is connected to the meter.

14

• Switch the meter on by pressing the ON/OFF key.

• Remove the probe protective cap.

• Set the appropriate altitude factor and set the salinity
factor to zero (see “Setup” section for details).

Zero Calibration

• Submerge the probe into AD7040 zero oxygen solu-
tion and stir gently for 2-3 minutes.

• Press CAL. The CAL tag
lights up and the hourglass
symbol will blink on the LCD
until the reading is stable.

• When the reading is stable,
CFM starts blinking. Press
CFM to confirm the 0% cali­bration point.

• To save a 1-point procedure, press CAL. The instru­ment will memorize the zero calibration data and re­turn to measurement mode.
For a 2-point calibration do not press CAL and follow
the slope calibration procedure.

Slope Calibration

It is suggested to perform the slope calibration in air.

• Rinse the probe in clean water to remove any residual
zero oxygen solution.

15

Note: If you are performing a slope calibration only,

press CAL and then use the ARROW keys to
select the 100% DO calibration point.

• Dry the probe tip and allow a few seconds for the
reading to stabilize. The hourglass symbol will blink
until the reading is stable.

• When the reading is stable, CFM starts blinking. Press
CFM to confirm the 100% calibration point.

• The instrument stores the slope calibration data and
returns to measurement mode.

CUSTOM CALIBRATION

AD630 allows to perform a 1 point calibration (slope

only) using a custom solution with a known DO value
greater than 20%.

Preparation

• Pour small quantity of the custom solution into a clean
beaker.

• Make sure the probe is ready for measurements (see
“Probe preparation” paragraph on page 10), i.e. the
membrane is filled with electrolyte and the probe is
connected to the meter.

• Switch the meter on by pressing the ON/OFF key.

• Remove the probe protective cap.

16

• Set the appropriate altitude factor and set the salinity
factor to zero (see “Setup” section for details).

Procedure

• Submerge the probe into the custom solution.

• Press CAL and then RANGE. The CAL tag and the
“Cal Point Custom” message will appear .

• Use the arrow keys to set the desired calibration value.

• The hourglass symbol will blink until the reading is
stable.

• When the reading is stable, CFM starts blinking. Press
CFM to confirm the custom calibration.

• The instrument stores the slope calibration data and
returns to measurement mode.

17

Notes:

• If the reading is not close to the selected value,
the WRONG tag will blink.

• The meter features the automatic buffer recog­nition function. If the arrow keys are pressed to
select the desired calibration value, the automatic
buffer recognition function is disabled.

• T o exit the calibration mode, press the CAL key
at any time.

18

TEMPERATURE ADJUSTMENT

The temperature reading can be manually fine-tuned fol­lowing the below procedure.

Press SHIFT and CFM keys to enter the temperature
adjustment mode. Both primary and secondary LCDs
will display the factory default temperature reading.

Adjust the temperature reading on the primary LCD using
the arrow keys. The maximum adjustment is ±2.0

around current reading.
Press CFM to confirm. The meter returns to measure-

ment mode and displays the new temperature.

Notes:

ºC

• Press SHIFT and CFM keys to escape without

any changes.

• To enter temperature adjustment mode, the
probe must be connected.

19

SETUP

Setup mode allows to view and modify the instrument
parameters.

To enter setup mode, press SETUP key from measure­ment mode. The SETUP tag lights up.

Setup mode allows viewing and modifying the follow­ing parameters:

• Salinity factor (SALt)

• Altitude factor (ALt)

• Time (TIME tag)

• Date (DATE tag)

• Temperature unit (tEMP)

• Baud Rate (bAud)

• Command Prefix (PrEF)

• Auto-off (AOFF)

• Instrument ID (InId)

• Select the desired parameter with the arrow keys
and press CAL to change the value. The selected
parameter will blink.

• Use the arrow keys to increase or decrease the
displayed value.

• Press CFM to save the modified value or CAL to
escape without saving.

20

• Use the arrow keys to select the next/previous
parameter.

SALINITY COMPENSATION FACTOR

• Select the “SALt” item and press CAL. The salin­ity factor will start blinking.

• Use the arrow keys to change the value.

• Press CFM to save the modified value or CAL to
escape without saving.

Salinity affects the DO concentration, decreasing its
value. The table on next page shows the maximum
oxygen solubility at various temperatures and salinity
levels.

Note: The relationship between salinity and chlorinity

for sea water is given by the equation:
Salinity (g/l) = 1.80655 Chlorinity (g/l)

21

º C Salinity (g/l) at Sea Level ºF

0 g/l 10 g/l 20 g/l 30 g/l 40 g/l 50 g/l

0 14.62 13.63 12.71 11.85 11.05 10.31 32.0
2 13.83 12.91 12.06 11.26 10.51 9.81 36.5
4 13.11 12.25 11.46 10.71 10.01 9.36 39.2
6 12.45 11.65 10.90 10.21 9.55 8.94 42.8

8 11.84 11.10 10.40 9.74 9.13 8.55 46.4
10 11.29 10.59 9.93 9.32 8.74 8.20 50.0
12 10.78 10.12 9.50 8.92 8.38 7.87 53.6
14 10.31 9.69 9.11 8.56 8.05 7.56 57.2
16 9.87 9.29 8.74 8.22 7.74 7.28 60.8
18 9.47 8.92 8.40 7.91 7.45 7.02 64.4
20 9.09 8.57 8.08 7.62 7.18 6.77 68.0
22 8.74 8.25 7.78 7.34 6.93 6.54 71.6
24 8.42 7.95 7.51 7.09 6.69 6.32 75.2
25 8.26 7.81 7.38 6.97 6.58 6.22 77.0
26 8.11 7.67 7.25 6.85 6.47 6.12 78.8
28 7.83 7.40 7.00 6.62 6.26 5.93 82.4
30 7.56 7.15 6.77 6.41 6.07 5.74 86.0
32 7.30 6.92 6.55 6.21 5.88 5.57 89.6
34 7.06 6.70 6.35 6.02 5.70 5.41 93.2
36 6.84 6.48 6.15 5.83 5.53 5.25 96.8
38 6.62 6.28 5.96 5.66 5.37 5.10 100.4
40 6.41 6.09 5.78 5.49 5.22 4.95 104.0
42 6.21 5.91 5.61 5.33 5.07 4.81 107.6
44 6.02 5.73 5.45 5.18 4.92 4.68 111.2
46 5.84 5.56 5.29 5.03 4.78 4.55 114.8
48 5.66 5.39 5.13 4.88 4.65 4.22 118.4
50 5.49 5.23 4.98 4.74 4.52 4.30 122.0

22

ALTITUDE COMPENSATION FACTOR

• Select the “ALt” item and press CAL. The altitude
factor will start blinking.

• Use the arrow keys to change the value.

• Press CFM to save the modified value or CAL to
escape without saving.

• The altitude affects DO concentration, decreasing
its value. The table on next page reports the maxi­mum oxygen solubility at various temperatures and
altitudes.

23

º C Altitude, meters above the sea level

0 300 600 900 1200 1500 1800 2100 2400 2700 3000 3300 3600 4000

0 14.6 14.1 13.6 13.2 12.6 12.1 11.7 11.2 10.8 10.4 10.0 9.6 9.3 8.8
2 13.8 13.3 12.8 12.3 11.9 11.4 11.0 10.6 10.2 9.8 9.5 9.1 8.8 8.3
4 13.1 12.6 12.2 11.7 11.3 10.8 10.4 10.1 9.7 9.3 9.0 8.6 8.3 7.9
6 12.4 12.0 11.5 11.1 10.7 10.3 9.9 9.5 9.2 8.8 8.5 8.2 7.9 7.5

8 11.8 11.4 11.0 10.6 10.2 9.8 9.4 9.1 8.7 8.4 8.1 7.8 7.5 7.1
1 0 11.3 10.9 10.5 10.1 9.7 9.3 9.0 8.6 8.3 8.0 7.7 7.4 7.1 6.8
1 2 10.8 10.4 10.0 9.6 9.3 8.9 8.6 8.3 7.9 7.6 7.4 7.1 6.8 6.5
1 4 10.3 9.9 9.5 9.2 8.8 8.5 8.2 7.9 7.6 7.3 7.0 6.8 6.5 6.2
16 9.9 9.5 9.1 8.8 8.5 8.2 7.8 7.5 7.3 7.0 6.7 6.5 6.2 5.9
18 9.5 9.1 8.8 8.4 8.1 7.8 7.5 7.2 7.0 6.7 6.4 6.2 6.0 5.7
20 9.1 8.7 8.4 8.1 7.8 7.5 7.2 6.9 6.7 6.4 6.2 5.9 5.7 5.4
22 8.7 8.4 8.1 7.8 7.5 7.2 6.9 6.7 6.4 6.2 5.9 5.7 5.5 5.2
24 8.4 8.1 7.8 7.5 7.2 6.9 6.7 6.4 6.2 5.9 5.7 5.5 5.3 5.0
25 8.3 7.9 7.6 7.4 7.1 6.8 6.5 6.3 6.1 5.8 5.6 5.4 5.2 4.9
26 8.1 7.8 7.5 7.2 6.9 6.7 6.4 6.2 5.9 5.7 5.5 5.3 5.1 4.8
28 7.8 7.5 7.2 7.0 6.7 6.4 6.2 5.9 5.7 5.5 5.3 5.1 4.9 4.6
30 7.6 7.3 7.0 6.7 6.5 6.2 6.0 5.7 5.5 5.3 5.1 4.9 4.7 4.5
32 7.3 7.0 6.8 6.5 6.2 6.0 5.8 5.5 5.3 5.1 4.9 4.7 4.5 4.3
34 7.1 6.8 6.5 6.3 6.0 5.8 5.6 5.3 5.1 4.9 4.7 4.5 4.4 4.1
36 6.8 6.6 6.3 6.1 5.8 5.6 5.4 5.2 5.0 4.8 4.6 4.4 4.2 4.0
38 6.6 6.4 6.1 5.9 5.6 5.4 5.2 5.0 4.8 4.6 4.4 4.2 4.1 3.8
40 6.4 6.2 5.9 5.7 5.4 5.2 5.0 4.8 4.6 4.4 4.2 4.1 3.9 3.7
42 6.2 6.0 5.7 5.5 5.3 5.1 4.9 4.7 4.5 4.3 4.1 3.9 3.8 3.6
44 6.0 5.8 5.5 5.3 5.1 4.9 4.7 4.5 4.3 4.1 4.0 3.8 3.6 3.4
46 5.8 5.6 5.4 5.2 4.9 4.7 4.5 4.3 4.2 4.0 3.8 3.6 3.5 3.3
48 5.7 5.4 5.2 5.0 4.8 4.6 4.4 4.2 4.0 3.8 3.7 3.5 3.4 3.2
50 5.5 5.3 5.0 4.8 4.6 4.4 4.2 4.0 3.9 3.7 3.5 3.4 3.2 3.0

24

TIME

• Select the “TIME” item. The TIME tag will light up
on the LCD.

• Press CAL and the hour
will start blinking. Use the
arrow keys to change the
displayed value.

• Press RANGE and the min­utes will blink. Use the
arrow keys to change the
displayed value.

• Press CFM to save the modification or CAL to
escape without saving.

DATE

• Select the “DATE” item. The DATE tag will light
up on the LCD.

• Press CAL and the day
value will start blinking. Use
the arrow keys to set the
current day.

• Press RANGE and the
month will flash. Use the
arrow keys to set the month.

25

• Press RANGE and the year
will flash on the secondary
LCD. Use the arrow keys
to set the year.

• Press CFM to save the
modification or CAL to es­cape without saving.

TEMPERATURE UNIT

• To set the measure unit for temperature readings,
select the “tEMP” item and press CAL.

• Use the arrow keys to
choose °C or °F option.

• Press CFM to save the
modification or CAL to es­cape without saving.

BAUD RATE

• To set the baud rate for serial communication, se­lect the “bAud” item and press CAL. The current
value will start blinking.

• Use the arrow keys to
choose the desired value.

• Press CFM to save the new
value or CAL to escape.

26

COMMAND PREFIX

• This item is factory set to 16, which is the value
required by the ADSW10 communication software.

It is recommended to not change this value.

AUTO-OFF

• Select the “AOFF” item
and press CAL.

• Use the arrow keys to
enable (On, 5 minutes) or
disable (OFF) the feature.

• Press CFM to save the modification or CAL to
escape without saving.

INSTRUMENT ID

• Select the “InId” item and
press CAL. The ID code
(default: 0000) will start
blinking.

• Use the arrow keys to change the value.

• Press CFM to save the modified value or CAL to
escape without saving.

27

The following table lists the setup items, their valid range
and the factory settings (default):

Item Description Valid values Default

SALt Salinity factor 0.0 to 50.0 0. 0
AL t Altitude factor 0 to 4000 0
TIME Time (hh:mm) 00:00 to 23:59
DATE Date (DD.MM.YYYY) 01.01.2007 to

tEMP Temperature measure unit °C, °F °C
bAud Baud rate for serial 600, 1200, 2400, 2400

communication 4800, 9600

PrEF(*) Command prefix for 0 to 47 16

serial communication
AOFF Auto-off enable/disable On (5 min), OFF OFF
InId Meter identification code 0000 to 9999 0000

(* ) It is recommended to not modify this item: the default value is the

necessary prefix for PC communication using ADSW10 software.

31.12.2099

28

GOOD LABORATORY PRACTICE

Good Laboratory Practice (GLP) is a set of functions
that allows storage and retrieval of data regarding the
status of the system.
After a successful calibration, the meter automatically
stores the date and time of calibration, and the calibra­tion point(s).
T o view the last calibration data, press SHIFT and then
GLP keys.
The first information appearing
on the LCD is the meter ID
code.

By repeatedly pressing RANGE key, all GLP data are
displayed in the following sequence:

Last calibration date
(day , month and year)

Last calibration time

29

Standard calibration point(s)

Custom calibration point

Notes:

• T o exit GLP mode at any time press SHIFT and GLP .

• If the calibration procedure

was never performed, the
LCD shows the “no CAL”
message for a few seconds
and then returns to normal
measurement mode.

30

LOG-ON-DEMAND

T o store the current reading into
memory, press SHIFT and
STORE keys from measure­ment mode.

The LCD will display for a few
seconds the “Stor” message to­gether with the LOG tag and
the sample number.

A complete set of information is memorized: date, time,
DO and temperature readings.

Up to 100 samples can be stored into memory.
When the memory is full and

the STORE key is pressed, the
sample will not be stored and
the LCD will display the
“FULL” message.

In this case, it is necessary to delete data from memory
before proceeding.

TO VIEW STORED DATA

T o retrieve the memorized information, press SHIFT and
MRCL keys.

31

The primary LCD displays the
date (day and month) and the
secondary LCD shows the last
stored sample number.

If no samples are stored into memory , the “no rEC” indi­cation is displayed.

• Select the desired sample number using the arrow keys.

If the up arrow key is pressed while the last sample is
displayed, the meter returns to the first sample.

• Press RANGE to view the remaining data for the se-

lected sample in the following order:

• year

• time

• DO reading

(only dashes “----” mean
reading out of range or probe
not connected)

32

• Temperature reading

(only dashes “----” mean
reading out of range)

• To skip to the next or previous sample, use the up or

down arrow keys respectively.
For example, if the up arrow key is pressed while a

sample reading is displayed, the meter shows the read­ing of next sample.

• To return to normal measurement mode, press again

SHIFT and MRCL keys at any time.

TO DELETE STORED DATA

The meter allows to delete a single sample or all the
memory at one time.

After scrolling all logged pa­rameters, the meter displays
the “dEL” message together
with the sample number.

Note: Pressing SHIFT and

SETUP keys, the in-

strument toggles be-

tween record number

and “del ALL”.

33

• Press SHIFT and CLR to delete the selected record

or all records.

• If the “dEL All” option was selected, all logged data

are deleted and the instrument returns to normal mea­surement mode.

• Press SHIFT and MRCL at any time to return to mea-

surement mode.

Notes:

• When viewing through
the logged data, the
“nULL” message will
appear when selecting a
deleted sample.

• Positions remain free by deleting the last logged
sample or all records.

34

HOLD FUNCTION

To freeze a stable reading on the LCD, press HOLD
key from normal measurement mode.

The “Auto” and “H” tags will blink on the LCD until the
reading stabilizes.

When the reading is stable, the “Auto” and “H” tags
stop blinking and the reading is frozen.

Press HOLD key again to return the normal measure­ment mode.

Note: Pressing RANGE the instrument will skip to the

displayed range, without leaving the HOLD
mode. The STORE key also holds HOLD mode.
Pressing SHIFT and then SETUP , GLP or MRCL
key , the instrument leaves the HOLD mode and
performs the selected function.

35

PC INTERFACE

Data can be transferred from the instrument to the PC
using the ADSW10 Windows® compatible software (op­tional).
ADSW10 also offers graphing and on-line help feature.
Data can be exported to the most popular spreadsheet
programs for further analysis.
To connect your instrument to a PC, use the AD9551
optional Adwa cable. Plug the cable to the instrument
RS232 socket and to a serial port of your PC.
If not using the AD9551 cable, communication between
instrument and PC may be not possible, due to different
RS232 connector configuration.

BATTERY REPLACEMENT

The meter can recognize two battery level conditions:

• low battery: in measurement

mode, the secondary LCD
shows the “bATT” message
and the temperature reading
alternately.

36

• dead battery: if batteries

become too weak to ensure
reliable readings, the meter
displays the “dEAd bATT”
message for a few seconds
and then automatically turns
off.

Battery replacement must only
take place in a safe area and
using the battery type specified
in this instruction manual.

To replace rundown batteries,
remove the battery cover and
substitute all four 1.5 V AA al­kaline batteries with new ones,
while paying attention to the
correct polarity .
Reattach and tighten the bat­tery cover making sure that the
gasket is in place.

Note: When batteries are removed, the meter can re-

member date & time for about 5 minutes. After
that, it will be necessary to set again date & time
through the setup procedure.

37

PROBE AND MEMBRANE MAINTENANCE

For a top performance probe, it is recommended to re­place the membrane every 2 months and the electrolyte
once a month.

Proceed as follows:

• Unscrew the membrane by
turning it counterclockwise.

• Rinse the supplied spare
membrane with some electro­lyte solution while shaking it
gently . Refill with clean elec­trolyte.

• Gently tap the membrane over
a surface to ensure that no air
bubbles remain trapped.

• With the sensor facing down
screw the cap clockwise to
the end of the threads. Some
electrolyte will overflow.

If any deposit scales the sensors, gently brush the sensor
surface with the supplied scouring pad, while paying
attention to not damage the plastic body.

38

PROBES, SOLUTIONS AND ACCESSORIES

AD8001/3 Galvanic DO probe with built-in tem-

perature sensor, DIN connector & 3 m
cable

AD8001A/P Spare DO membrane with O-ring

(5 pcs)

AD7040 Zero oxygen solution, 100 ml bottle
AD9072 Electrolyte solution for galvanic DO

probe,4x30 ml bottle

AD9315 Probe holder
AD9551 Serial communication cable, 5 to 9 pins
ADSW10 Windows

communication

®

compatible software for PC

39

ADW A HUNGARY Kft.

Alsókikötõ sor 11, 6726 Szeged, Hungary

T el. [phone]

Fax [phone]

www .adwainstruments.com

MANAD630 09/14