MRC DO-5519 User manual

1,600 point data logger, RS232, AC/DC adapter
auto calibration
DISSOLVED
OXYGEN METER
Model : DO-5519 Your purchase of this
DISSOLVED OXYGEN
METER marks a step
forward for you into the
field of precision
measurement.
Although this METER is
a complex and delicate
instrument, its durable
structure will allow
many years of use if
proper operating
techniques are
developed. Please read
the following
instructions carefully
and always keep this
manual within easy
reach.
OPERATION MANUAL
3, Hagavish st. Israel 58817 Tel: [phone], Fax: [phone] [e-mail]
MRC.11.21

ATTENTION :
Fill the Probe's Electrolyte at first.
Intend to keep the DO probe under
the best condition, when user receive
the DIGITAL OXYGEN METER along
the PROBE, it should fill the
Probe's Electrolyte at first.
` Probe-fillin
g
Electrolyte
Probe head with Diaphragm set
The procedures that to fill the Probe's
Electrolyte, refer the chapter 8
" PROBE MAINTENANCE ", page 13 .

TABLE OF CONTENTS
1. FEATURES.............................................................................. 1
2. SPECIFICATIONS.................................................................... 2
3. FRONT PANEL DESCRIPTION..................................................
.
4
3-1 Display............................................................................. 4
3-2 Power/ESC/Send button.................................................... 4
3-3 FUNC/HOLD button ( Send quit/ button )........................▲4
3-4 REC/Enter button..............................................................4
3-5 Settin
g
/Lo
gg
er button ( button )...................................
.
▼4
3-6 Probe input socket............................................................ 4
3-7 DC 9V adapter socket.......................................................
.
4
3-8 RS-232 output terminal..................................................... 4
3-9 Battery compartment/Cover.............................................. 4
3-10 Battery cover screws....................................................... 4
3-11 Oxy
g
en Probe handle...................................................... 4
3-12 Temperature sensor........................................................ 4
3-13 Probe head with diaphra
g
m set........................................4
3-14 Protection cover for probe head....................................... 4
3-15 Oxy
g
en probe plu
g
.........................................................
.
4
4. MEASURING PROCEDURE....................................................... 6
4-1 Calibration........................................................................6
4-2 Dissolved Oxy
g
en ( DO) measurement .............................. 7
4-3 Oxy
g
en in Air ( O2) measurement .....................................9
4-4 Temperature measurement...............................................
.
9
4-5 Data Hold......................................................................... 9
4-6 Data Record ( Max., Min. readin
g
)....................................
.
9
4-7 Data Lo
gg
er.....................................................................
.
10
5. ADVANCED ADJUSTMENT PROCEDURE....................................12
5-1 Hei
g
ht Value Settin
g
.........................................................
.
13
5-2 Salt Value Settin
g
.............................................................
.
13
5-3 Chan
g
e the Temp , unit.............................................℃℉ 14
5-4 Auto power ON/OFF..........................................................14
5-5 Chan
g
e the data lo
gg
er samplin
g
time...............................
.
15
5-6 To show the balance data numbers in the memory.............
.
15
5-7 Clear the existin
g
savin
g
data from the memory.................
.
15
5-8 Code enterin
g
for the further calibration usa
g
e...................16
6. SEND THE DATA OUT FROM THE METER................................. 16
7. RS232 PC SERIAL INTERFACE.................................................
.
17
8. PROBE MAINTENANCE............................................................19
9. BATTERY REPLACEMENT........................................................ 21
10. OPTIONAL ACCESSORIES......................................................22

1. FEATURES
* This Digital Oxygen Meter is supplied with a
polarographic type probe with an incorporated Temp.
sensor which serves for precise Dissolved Oxygen ( DO )
and Temp. measurement.
*Applications for Aquarium, Medical research, Agriculture,
Fish hatcheries, Laboratory, Water conditioning, Mining
industry, Schools & Colleges, Quality control...
* Heavy duty dissolved oxygen probe, probe head size
can connect with BOD bottle
* Separate probe with 4 meters cable.
* Automatic Temp. compensation from 0 to 50 for sensor.℃
* Build in advanced setting procedures, it can adjust the
" % SALT " & " Height " compensation value.
* Microprocessor circuit assures high accuracy and provides
special functions and features.
* Multi-display, show Dissolved oxygen & Temp. at the
same time.
*RS 232 PC serial interface.
* Build in temperature , measurement.℃℉
*LCD with two display, easy readout.
*Manual and auto data logger, with flexible sampling
time selection, can save max. 1,600 reading data.
*Power function can default to auto off or manual off.
*Temperature unit can default to or .℃℉
*Microcomputer circuit, intelligent function, high accuracy.
*Records Maximum and Minimum readings with recall.
*Data hold function for freezing the desired value.
*Build in the input socket for DC 9V power adapter.
*RS232 PC serial interface.
* Use the durable, long-lasting components, including a
heavy duty & compact ABS-plastic housing case.
1

2. SPECIFICATIONS
Display LCD size : 44 mm x 29 mm.
Dual function LCD
Circuit Custom one-chip of microprocessor LSI
circuit.
Measurement Dissolved Oxygen 0 to 20.0 mg/L ( liter ).
& Range Oxygen in Air 0 to 100.0 %.
T
emperature 0 to 50 .℃
Dissolved Oxygen 0.1 mg/L.
Resolution Oxygen in Air 0.1 % O2 .
T
emperature 0.1 .℃
A
ccuracy Dissolved Oxygen ± 0.4 mg/L.
(23± 5 )℃Oxygen in Air ± 0.7% O2.
* For reference only
T
emperature ± 0.8 /1.5 .℃℉
Sensor
T
he polarographic type oxygen probe with
Structure an incorporated temperature sensor.
Probe
T
emperature 0 to 50 ,℃
Compensation
* Automatic adj.
and Adjustment Salt * Manual adj. 0 to 39 %Salt (% Weight)
Height * Manual adj. 0 to 3,900 meter
Memory Records Maximum, Minimum readings with
Recall recall.
Power of
f
A
uto power off saves battery life, or manual
off by push button.
Data Output RS 232 PC serial interface.
Sampling Time Manual Push the data logger button once
of Data Logger will save data one time.
* Set sampling time to 0 second.
Auto 1, 2, 5, 10, 30, 60, 600, 1800,
3600 seconds.
Data Logger Max. 1,600-point Data logger
number
Data Hold Freeze the display reading.
Sampling Time Approx. 1 second.
of display
2

Data Output RS 232 PC serial interface.
Operating 0 to 50 .℃
Temperature
Operating Less than 80% RH.
Humidity
Power Supply 006P DC 9V battery ( Alkaline or Heavy duty
type ) or DC 9V adapter input.
* AC/DC power adapter is optional.
Power Current Approx. DC 6.2 mA.
Weight 446 g/0.98 LB. * Include probe and batterry.
Dimension Main instrument:
135 x 60 x 33 mm.
Oxygen probe :
190 mm x 28 mm Dia. ( 7.5" x 1.1" Dia. )
Probe's cable length : 4 meters.
Accessories Oxygen probe ( OXPB-11 )..............1 PC.
Included Soft carrying case ( CA-05A )..........1 PC.
Operation manual...........................1 PC.
Spare Probe head with Diaphragm
OXHD-04....................................... 2 PCs.
Probe-filling Electrolyte
OXEL-03........................................ 1 PC.
Optional * Oxygen probe..................... OXPB-11
probe and * Spare Probe head with
accessories Diaphragm set....................
.
OXHD-04
*Probe-filling Electrolyte........OXEL-03
*RS232 cable........................UPCB-02
*USB cable...........................USB-01
*Data Acquisition software....
.
SW-U801-WIN
*Data logger software...........SW-DL2005
*Hard carrying case..............
.
CA-06
*AC to DC 9V adapter
3

3. FRONT PANEL DESCRIPTION
Fig. 1
4

Fig. 2
3-1 Display
3-2 Power/ESC/Send button
3-3 FUNC/Hold button ( Send quit/ button )▲
3-4 REC/Enter button
3-5 Setting/Logger button ( button )▼
3-6 Probe input socket
3-7 DC 9V adapter socket
3-8 RS-232 output terminal
3-9 Battery compartment/Cover
3-10 Battery cover screws
3-11 Oxygen Probe handle
3-12 Temperature sensor
3-13 Probe head with diaphragm set
3-14 Protection cover for probe head
3-15 Oxygen probe plug
5

4. MEASURING PROCEDURE
4-1 Calibration
Before the measurement, the meter should be processed
the following calibration procedures :
1)Connect the " Oxygen probe plug " ( 3-15, Fig. 2 )
into the " Probe input socket " ( 3-6, Fig. 1 ).
2)Power on the instrument by pushing the " Power Off/On
button " ( 3-2, Fig. 1 ).
The " Display " ( 3-1, Fig. 1 ) will show the
" O2% " and the " Temp. " value as example :
21.4
26.4 ℃% O2
The upper display ( %O2 display ) value will
increase, wait for approx. 3 minutes at least
until the upper display reading values become
stable & no fluctuation.
Press the " Hold button " ( 3-3, Fig. 1 ) once, the
" Display " ( 3-1, Fig. 1 ) will show the " Hold "
indicator, then following press the " REC button "
( 3-4, Fig. 1 ) once, the Display will show :
30 Count down from
CAL 30 to 0 and " End "
6

The text " CAL " will flash, the upper value will
count down from 30 to 0 and " End " , then show as :
20.9
26.4 ℃% O2
The upper display will show the values exactly
same as 20.9 or 20.8. ( As the oxygen in air is
20.9 % typically, so use the environment air 02
value for quick & precise calibration).
Now the calibration procedures are finished !
Calibration Consideration :
Please process calibration procedures
under wide and ventilating
environment for best effect.
4-2 Dissolved Oxygen ( DO) measurement
1)After the meter be calibrated ( above procedure 4-1 ),
the meter is ready for measurement.
2)Press the " FUNC button " ( 3-3, Fig. 1 ) continuously
at least two seconds, the display indicator will change
from " % O2 " change to " mg/L ".
3)a. Immersed the probe to a depth at least 10 cm of
the measured liquid in order for the probe to be
influenced by the automatic temperature
compensation circuit..
7

b.As for the thermal equilibrium to occur between the
probe & the measurement sample must be allowed
to pass, which usually amounts to a few minutes if
the Temp. difference between the two is only
several Celsius degrees.
4)a. In order to measure the dissolved oxygen content in
any given liquid, it is sufficient to immerse the tip of
the probe in the solution, making sure that velocity
of the liquid coming into contact with the probe is at
least 0.2 - 0.3 m/s or to shake the probe.
b.During laboratory measurements, the use of a
magnetic agitator to ensure a certain velocity in the
fluid is recommended. In this way, errors due to the
diffusion of the oxygen present in the air in the
solution are reduced to a minimum.
Measuring consideration :
The DO ( Dissolved Oxygen ) " measurement will
be effected by the following factor :
"Height" value of the measured environment
"% Salt" in the measured solution
For the above factor, the meter's default value are :
" Height " value is " 0 meter " ( sea level ).
" % Salt " value is 0 %Salt ( 0 % Weight ).
The method to adjust the " % Salt " value and
" Height value ", refer to
Chapter 5-1 Height Value Setting, page 13.
Chapter 5-2 Salt Value Setting, page 13.
8

5)Rinsed the probe accurately with normal tap water after
each series of measurement.
Install " Probe head protection cover " ( 3-14, Fig, 2 )
into the " Probe head " ( 3-13, Fig. 2 ).
4-3 Oxygen in Air ( O2 ) measurement
After the meter be calibrated ( above procedure 4-1 ),
the meter is ready for O2 ( Oxygen in air ) measurement,
the display will show the indicator " O2% " .
* The Air oxygen measurement value only for reference.
4-4 Temperature measurement
During the measurement, the lower LCD Display will
show the temperature values of measuring solution.
*
The method to change the Temp. unit from
" " to " " or " " to " ", please refer to :℃℉℉℃
Chapter 5-3 Change the Temp , unit, page 14.℃℉
4-5 Data Hold
During the measurement, press the " Hold button " ( 3-3,
Fig. 1 ) once will hold the measured value & the LCD will
display a " HOLD " symbol.
* Press the " Hold button " once again will release the
data hold function.
4-6 Data Record ( Max., Min. reading )
* The data record function records the maximum and
minimum readings. Press the " REC button " ( 3-4, Fig. 1
) once to start the Data Record function and there
will be a " REC " symbol on the display.
9

* With the " REC " symbol on the display :
a)Press the " REC button " ( 3-4, Fig. 1 ) once, the
" REC MAX " symbol along with the maximum value
will appear on the display.
If intend to delete the maximum value, press the
" Hold button " ( 3-3, Fig. 1 ) once, the display will
show the " REC " symbol only & execute the
memory function continuously.
b)Press the " REC button " ( 3-4, Fig. 1 ) again, the
" REC MIN. " symbol along with the minimum value
will appear on the display.
If intend to delete the minimum value, press the
" Hold button " ( 3-3, Fig. 1 ) once, then the display
will show the " REC " symbol only & execute the
memory function continuously.
c)To exit the memory record function, just press the
" REC " button for 2 seconds at least. The display will
revert to the current reading.
4-7 Data Logger
The data logger function can save 1,600-point measuring
data.
The data logger procedures are following :
a)Press the " REC button " ( 3-4, Fig. 1 ) once to start
the Data record function and there will be a " REC "
symbol on the display.
b)Auto Data Logger ( Sampling time should select
to 1, 2, 5, 10, 30, 60, 600, 1800 or 3600 seconds )
Press the " Logger button " ( 3-5, Fig. 1 ) once to start
the Data Logger function. The " REC " symbol will flash
per 1.5 second and the beeper will sound when save
the data into the memory. Now the Data Logger
function is executed.
10

Manual Data Logger ( Sampling time should set
to 0 second )
Press the " Logger button " ( 3-5, Fig. 1 ) once will
save the data one time into the memory, at the
same time the symbol " REC " will flash once and
the beeper will sound.
Memory full
When execute the data logger function, if the upper
display show " FULL " with flashing, it indicate the
memory data already over 1,600 no. and the
memory is full.
c)During the Data Logger function is executed, press the
" Logger button " ( 3-5, Fig. 1 ) once will stop the
data logger function, the " REC " symbol will stop to
flash.
If press the " Logger button " ( 3-5, Fig. 1 ) once again
will continuous the Data Logger function.
Note :
1) If intend to change the data logger sampling time, please
refer to chapter 5-5, page 15.
2) If intend to know the space of balance data numbers into the
memory IC, please refer to chapter 5-6, page 15.
3) If intend to clear the saving data from the memory please
refer section 5-7, page 15.
11

5. ADVANCED SETTING PROCEDURES
Before executing Advanced Setting Procedures,
exit the " Hold function " and the Record "
function first.
* Press " Setting button " continuously at
least 5 seconds to enter the setting function.
* After already set the desiring value ( function ),
press the " Enter button " to save with default.
* Press the " Esc button " to escape the setting
procedures.
a.Hold the " Setting button " ( 3-5, Fig. 1 ) at least five
seconds will enter the Advanced Setting Procedures.
b.One by one to press the " Setting button " ( 3-5, Fig. 1 )
once a while to select the main setting function in
sequence and show on the text the lower display as :
High..... Change the height compensation value
SALt.....
.
Change the % salt compensation value
.........
.
℃Change the Temp , unit℃℉
OFF......
.
Auto power ON/OFF management
SP-t......Change the data logger sampling time
SPACE To show the balance data numbers in the memory
CLr.......
.
Clear the existing saving data from the memory
Code....
.
Code entering for the further calibration usage
12

5-1 Height Value Setting
( Lower display show " High " )
Bear in mind that the DO measurement is considered
to be taken at sea level. However if the measuring
environment is not at sea level ( 0 meter ), then should
adjust the " Height " values for the probe compensation
when intend to make the DO measurement precisely.
After the low display show " High ", press the " Enter
button " ( 3-4, Fig. 1 ) once. the " High " symbol will
flash, the up display will show the Height compensation
value ".
Use " button " ( 3-3, Fig. 1 ) and " button " ( 3-5,▲▼
Fig. 1 ) to adjust the up display value until it same as
the desiring height compensation value ( unit is meter )
exactly.
After select the desiring value, press the " Enter button "
( 3-4, Fig. 1 ) to save the data.
Remark :
* The " Height value " only can adjust from 0 to 3,900
meters.
* After power off and on again, the original setting
height value will be cleared and return to 0 meter
( sea level ).
5-2 Salt Value Setting
( Lower display show " SALt " )
After the low display show " SALt ", press the " Enter
button " ( 3-4, Fig. 1 ) once. the " SALt " symbol will
flash. The up display will show the Salt compensation
value.
13

Use " button " ( 3-3, Fig. 1 ) and " button " ( 3-5,▲▼
Fig. 1 ) to adjust the up display value until it same as
the desiring Salt compensation value exactly, the unit is
% Salt ( % Weight ).
After select the desiring value, press the " Enter button "
( 3-4, Fig. 1 ) to save the data.
Remark :
* The " Salt value " only can adjust from 0 to 39 % Salt
( % Weight )
* After power off and on again, the original setting
Salt value will be cleared and return to 0 % Salt.
5-3 Change the Temp , unit℃℉
( Lower display show " " )℃
a.Use " button " ( 3-3, Fig. 1 ) to select " " or " ".▲℃℉
b.After select the desiring value ( or ), press the℃℉
" Enter button " ( 3-4, Fig. 1 ) to save the data with
default.
5-4 Auto power On/Off
( Lower display show " OFF " )
a.Use " button " ( 3-3, Fig. 1 ) to select " YES " or " no ".▲
* YES : Auto power off.
* no : Auto power disable, it is the manual power off.
b.After select the desiring function ( YES or no ), press the
" Enter button " ( 3-4, Fig. 1 ) to save the function with
default.
14

5-5 Change the data logger sampling time
( Lower display show " SP-t " )
a.Use " button " ( 3-3, Fig. 1 ) to select▲
data logger sampling time to
0, 1, 2, 5, 10, 30, 60, 600, 1800, 3600 seconds
b.After the sampling time value is determined, press the
Enter button " ( 3-4, Fig. 1 ) to save the sampling
time with default.
Note :
Set the sampling time to 0 second is used
for the manual Data Logger function.
5-6 To show the balance data numbers in the
memory
( Lower display show " SPACE " )
The display will show the balance data no. that exist
into the memory ( allow memorize data no. ).
5-7 Clear the existing saving data from the memory
( Lower display show " CLr " )
a.Use " button " ( 3-3, Fig. 1 ) to select " YES " or " no ".▲
* YES : It will execute the memory clear function..
* no : It will be not to clear the memory.
b.If select " YES ", press the " Enter button " ( 3-4, Fig. 1 )
the beeper will sound three sounds for warning,
if really intend to clear the memory, then press the
" Enter button " again.
15

5-8 Code entering for the further calibration usage
( Lower display show " CodE" )
The upper display will show 0.
The code setting is used for the further technician
service usage, it do not enter any new code, just press
the " Enter button " ( 3-4, Fig. 1 ) will finish the
Advanced Setting Procedure.
6. SEND THE DATA OUT
1)To send the data out from the meter, exit the
" Hold function " and the " Record function " at first.
2)Press the " Send button " ( 3-2, Fig. 1 ) at least 5
seconds until the lower display show " r232 ", then
release the button.
108 The total data logger
no. that saved into
r232 the memory.
3)Push the " Send button " ( 3-2, Fig. 1 ) once, the lower
display will show " SEnd ", the upper no. will count up
until reach the data logger storage no., at the same
the storage data logger data will send out the meter
from the " RS-232 output terminal " ( 3-8, Fig. 1 ).
0 Count up from 0 to
the data logger
SEnd storage no.
16

4)If intend up load the data to the computer, then
should connect the optional RS232 cable/UPCB-01 or
USB cable/USB-01 and cooperate the Data Logger
software ( optional, Model : SW-DL2005 ).
5)Press the " Send quit button " ( 3-3, Fig. 1 ) will
escape the data sending function.
7. RS232 PC SERIAL INTERFACE
The instrument has RS232 PC serial interface via a 3.5
mm terminal ( 3-8, Fig. 1 ).
The data output is a 16 digit stream which can be
utilized for user's specific application.
A RS232 lead with the following connection will be
required to link the instrument with the PC serial port.
Meter PC
(3.5 mm jack plug) (9W 'D" Connector)
Center Pin..............................
.
Pin 4
Ground/shield........................Pin 2
Pin 5
The 16 digits data stream will be displayed in the
following format :
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
17