Lutron Electronics PDO-519 Manual de usuario
Pen type, auto calibration
DISSOLVED
OXYGEN METER
Model : PDO-519
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
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 5
" PROBE MAINTENANCE ", page 9.
TABLE OF CONTENTS
1. FEATURES................................................................
.
1
2. SPECIFICATIONS......................................................
.
2
3. FRONT PANEL DESCRIPTION.....................................4
3-1 Display................................................................4
3-2 Power button.......................................................4
3-3 HOLD button ( Unit button ).................................4
3-4 REC button ( , button ).................................℃℉ 4
3-5 Probe head with diaphragm set............................
.
4
3-6 Battery compartment/Cover.................................
.
4
3-7 Protection cover for probe head.......................... 4
4. MEASURING PROCEDURE..........................................5
4-1 Calibration...........................................................5
4-2 Dissolved Oxygen ( DO) measurement .................6
4-3 Oxygen in Air ( O2) measurement ........................7
4-4 Temperature measurement..................................
.
7
4-5 Data Hold............................................................8
4-6 Data Record ( Max., Min. reading ).......................
.
8
5.PROBE MAINTENANCE...............................................9
6. BATTERY REPLACEMENT...........................................11
7. OPTIONAL CARRYING CASE.......................................11
1. FEATURES
* This Digital Dissolved 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
* All in one Pen type Dissolved Oxygen Meter, easy
operation.
* Automatic Temp. compensation from 0 to 50 for sensor.℃
* Microprocessor circuit assures high accuracy and provides
special functions and features.
* Multi-display, show Dissolved oxygen & Temp. at the
same time.
* Build in temperature , measurement.℃℉
* Temperature unit can default to or .℃℉
* LCD with two display, easy readout.
* Auto power off to save the battery life.
* IP-67 Water resistance.
* Records Maximum and Minimum readings with recall.
* Data hold function for freezing the desired value.
* Use the durable, long-lasting components, including a
heavy duty & compact ABS-plastic housing case.
1
2. SPECIFICATIONS
Display LCD size : 29 mm x 28 mm.
Dual function LCD
Circuit Custom one-chip of microprocessor LSI
circuit.
Measurement Dissolved Oxy
g
en 0 to 20.0 m
g
/L ( liter ).
& Ran
g
eAirOxy
g
en 0 to 100.0 %.
* For reference only
Temperature 0 to 50 .℃
Dissolved Oxy
g
en 0.1 m
g
/L.
Resolution Oxy
g
en in Air 0.1 % O2 .
Temperature 0.1 .℃
Accuracy Dissolved Oxy
g
en ± 0.4 m
g
/L.
(23± 5 )℃Oxy
g
en in Air ± 0.7% O2.
* For reference only
Temperature ± 0.8 /1.5 .℃℉
Sensor The polaro
g
raphic type oxy
g
en probe with
Structure an incorporated temperature sensor.
Temp. 0 to 50 ,℃
Compensation
* Automatic adjustment
Memory Records Maximum, Minimum readin
g
s with
Recall recall.
Power of
f
Auto power off saves battery life, or manual
off by push button.
Data Hold Freeze the display reading.
Sampling Time Approx. 1 second.
of display
Operating 0 to 50 .℃
Temperature
Operating Less than 80% RH.
Humidity
Power Supply DC 1.5V battery ( UM-4/AAA ) x 4 PCs.
Power Current Approx. DC 6.2 mA.
Weight 176 g/0.39 LB.
* Include probe and batterry.
2
Protection IP-65 : 0 to 50 .℃
IP-67 : 0 to 30 .℃
Dimension 180 x 40 x 40 mm ( 7.1 x 1.6 x 1.6 inch ).
Accessories Soft carryin
g
case ( CA-05A )..........
.
1 PC.
Included Operation manual...........................1 PC.
Spare Probe head with Diaphragm
OXHD-04.......................................
.
2 set
Probe-filling Electrolyte
OXEL-03........................................
.
1 set
Optional * Spare Probe head with
probe and Diaphra
g
m set.....................OXHD-04
accessories * Probe-fillin
g
Electrolyte........
.
OXEL-03
* Hard carryin
g
case...............CA-06
3
3. FRONT PANEL DESCRIPTION
Fig. 1
3-1 Display
3-2 Power button
3-3 HOLD button ( Unit button )
3-4 REC button ( , button )℃℉
3-5 Probe head with diaphragm set
3-6 Battery compartment/Cover
3-7 Protection cover for probe head
4
4. MEASURING PROCEDURE
4-1 Calibration
Before the measurement, the meter should be processed
the following calibration procedures :
1)Move the " Protection cover " ( 3-7, Fig. 1 ) away from
the " Probe head " ( 3-5, Fig. 1 ).
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
be changed, 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 "
5
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 " Unit button " ( 3-3, Fig. 1 ) continuously
at least two seconds, the display indicator will change
from " % O2 " change to " mg/L ", now the meter
is ready for Dissolved Oxygen ( DO ) measurement.
3)* Immersed the " Probe head " ( 3-5, Fig. 1 ) to
the measured liquid ( sample ) completely in order
for the probe to be influenced by the automatic
temperature compensation circuit, refer to Fig. 2, page 7.
6
* As for the thermal
equilibrium to occur
between the probe & the
measurement sample Fig. 2
( liquid ) must be taken,
it will take a few minutes
typically.
4)* 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.
* 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.
5)Rinsed the probe accurately with normal tap water after
each series of measurement.
Install " Probe head protection cover " ( 3-7, Fig, 2 )
into the " Probe head " ( 3-5, 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 is for reference only.
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 " " are :℃℉℉℃
7
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