Lutron Electronics PCE-228 User manual
pH/mV
SD card real time data logger
pH METER
Model : PCE-228
Your purchase of this
pH METER with SD
CARD DATA LOGGER
marks a step forward for
you into the field of
precision measurement.
Although this meter a
complex and delicate
instrument, its durable
structure will allow
many years of use if
p r o p e r o p e r a t i n g
t e c h n i q u e s a r e
developed. Please read
t h e f o l l o w i n g
instructions carefully
and always keep this
manual within easy
reach.
OPERATION MANUAL
TABLE OF CONTENTS
1. FEATURES..............................................................................
1
2. SPECIFICATIONS........................................................................
2
2-1 General Specifications................................................................
2
2-2 Electrical Specifications.........................................
4
3. FRONT PANEL DESCRIPTION...........................................................................
5
4. pH/mV MEASURING and CALIBRATION
PROCEDURE....................................................................
7
4-1 pH measurement ( manual Temp. compensation )......................
8
4-2 pH measurement ( ATC , automatic Temperature )....................
8
4-3 mV Measurement......................................................................
9
4-4 pH calibration .....................................................................
9
5. OTHER FUNCTION....................................................................
13
5-1 Data Hold.........................................................................................
13
5-2 Record ( Max./ Min. reading )....................................................................
13
5-3 LCD Backlight ON/OFF....................................................................
14
6. DATALOGGER................................................................................
14
6-1 Preparation before execute datalogger function...............................................................................
14
6-2 Auto Datalogger ( Set sampling time 1 second ).......................≧
15
6-3 Manual Datalogger ( Set sampling time = 0 second ).....................
16
6-4 Check time information...............................................................................
17
6-5 Check sampling time information...............................................................................
17
6-6 SD Card Data structure.......................................................................
17
7. Saving data from the SD card to the computer........................
19
8. ADVANCED SETTING...............................................................................
21
9. POWER SUPPLY from DC ADAPTER.....................................................
26
10. BATTERY REPLACEMENT.............................................................
26
11. SYSTEM RESET.................................................................................
27
12. RS232 PC SERIAL INTERFACE.....................................................
27
13. OPTIONAL ACCESSORIES.........................................................
28
14. PATENT.....................................................................................
30
1. FEATURES
* pH : 0 to 14.00 pH, mV ( ORP ) : ± 1999 mV.
* pH measurement can select ATC or manual Temp. adj..
* Optional ATC probe for pH measurement.
* pH measurement can make the auto calibration for
pH 7, pH 4 and pH 10 or other value.
* Real time SD memory card Datalogger, it Built-in Clock
and Calendar, sampling time set from 1 sec to 8 hour
59 min. 59 sec.
* Manual datalogger is available ( set the sampling
time to 0 ), during execute the manual datalogger
function, it can set the different position ( location ) No.
( position 1 to position 99 ).
* Innovation and easy operation, computer is not need to
setup extra software, after execute datalogger, just take
away the SD card from the meter and plug in the SD card
into the computer, it can down load the all the measured
value with the time information ( year/month/date/
hour/minute/second ) to the Excel directly, then user can
make the further data or graphic analysis by themselves.
* SD card capacity : 1 GB to 16 GB.
* LCD with green light backlight, easy reading.
* Can default auto power off or manual power off.
* Data hold, record max. and min. reading.
* Microcomputer circuit, high accuracy.
* Power by UM3/AA ( 1.5 V ) x 6 batteries or DC 9V adapter.
* RS232/USB PC COMPUTER interface.
* Wide applications: water conditioning, aquariums,
beverage, fish hatcheries, food processing, photography,
laboratory, paper industry, plating industry, quality
control, school & college, water conditioning.
1
2. SPECIFICATIONS
2-1 General Specifications
Circuit Custom one-chip of microprocessor LSI
circuit.
Display LCD size : 52 mm x 38 mm
LCD with green backlight ( ON/OFF ).
Measurement pH
Function ORP ( mV )
Datalogger Auto 1 sec to 8 hour 59 min. 59 sec.
Sampling Time
@Sampling time can set to 1 second,
Setting range
but memory data may loss.
Manual Push the data logger button
once will save data one time.
@Set the sampling time to
0 second.
@Manual mode, can also select the
1 to 99 position ( Location ) no.
Memory Card SD memory card. 1 GB to 16 GB.
Advanced
* SD memory card Format
setting
* Set clock time ( Year/Month/Date,
Hour/Minute/ Second )
* Set sampling time
* Auto power OFF management
* Set beep Sound ON/OFF
* Decimal point of SD card setting
* Set temperature unit to or ℃ ℉
* Set pH manual Temp. compensation value
Data Hold Freeze the display reading.
Memory Recall Maximum & Minimum value.
Sampling Time Approx. 1 second.
of Display
Data Output RS 232/USB PC computer interface.
*Connect the optional RS232 cable
UPCB-02 will get the RS232 plug.
*Connect the optional USB cable
USB-01 will get the USB plug.
2
Operating 0 to 50 .℃
Temperature
Operating Less than 85% R.H.
Humidity
Power Supply
* AC/DC power adapter is optional.
Alkaline or heavy duty DC 1.5 V battery
( UM3, AA ) x 6 PCs, or equivalent.
* AC/DC power adapter is optional.
DC 9V adapter input. ( AC/DC power
adapter is optional ).
Power Current Normal operation ( w/o SD card save
data and LCD Backlight is OFF) :
Approx. DC 14 mA.
When SD card save the data and LCD
Backlight is OFF) :
Approx. DC 37 mA.
* AC/DC power adapter is optional.
If LCD backlight on, the power
consumption will increase approx.
12 mA.
Weight 489 g/1.08 LB.
Dimension 177 x 68 x 45 mm (7.0 x 2.7x 1.9 inch)
Accessories *
Instruction manual..............................
1 PC
Included
Optional * PH electrode.......................
Accessories PE-03, PE-11, PE-01, PE-02, PE-07,
PE-06HD, PE-04HD, PE-05T, PE-03K7
*
ATC Temp. probe.....................
TP-07
* pH 7 buffer solution............. PH-07
* pH 4 buffer solution............. PH-04
*
ORP Electrode...........................
ORP-14
*
Hard carrying case..................................
CA-06
*
Soft carrying case..................................
CA-05A
SD memory card ( 1 GB )
SD memory card ( 2 GB )
AC to DC 9V adapter.
USB cable, USB-01.
RS232 cable, UPCB-02.
Data Acquisition software,SW-U801-WIN.
3
2-2 Electrical Specifications (23± 5 )℃
pH Optional,
Electrode Any pH electrode with BNC connector.
Measurement pH 0 to 14 pH
mV -1999 mV to 1999 mV
Input 10^12 ohm
Impedance
Temperature Manual 0 to 100 , be adjusted by℃
Compensation push button on front panel.
for pH Automatic With the optional temperature
measurement ( ATC ) probe ( TP-07 )
0 to 65 .℃
pH pH7, pH4, and pH10, 3 points calibration
Calibration ensure the best linearity and accuracy.
Measurement
Range Resolution Accuracy
pH 0 to 14 pH 0.01 pH ± (0.02 pH + 2 d)
mV ( ORP ) 0 to 1999 mV 1 mV ± (0.5% + 2 d)
*pH accuracy is based on calibrated meter only.
4
3. FRONT PANEL DESCRIPTION
5
3-1 Display
3-2 Power Button ( Backlight Button )
3-3 Hold Button ( ESC Button )
3-4 REC Button ( Enter Button )
3-5 Button ▲
3-6 Button ( Function Button )▼
3-7 Time Button
3-8 Logger Button ( SET Button, Sampling check )
3-9 Stand
3-10 Battery Compartment/Cover
3-11 Battery Cover Screw
3-12 Tripod Fix Nut
3-13 Temp. Socket ( pH ATC Socket )
3-14 pH Socket ( BNC Socket )
3-15 DC 9V Power Adapter Input Socket
3-16 Reset Button
3-17 RS-232 Output Terminal
3-18 SD card socket
6
4. pH/mV MEASURING and
CALIBRATION PROCEDURE
The meter default function are following :
* The display unit is set to pH.
* The temperature unit is set to .℃
* Manual ATC ( without connect the ATC probe )
* Auto power off.
* The sampling time of data logger function is
2 seconds.
Fig. 2
If the meter is first time to connect
the pH electrode, it should make the
calibration before operation, the
calibration procedures refer to
chapter 4-4, page 9.
7
4-1 pH measurement ( manual Temp. compensation )
1)Power on the meter by pressing " Power Button "
( 3-2, Fig. 1 ) once.
2)Prepare the pH Electrode ( optional ), install the
" Probe Plug " ( 4-1, Fig. 2 ) into the " pH Socket/BNC
Socket " ( 3-14, Fig. 1 ).
3)Adjust the manual Temp. value same as the
solution's temperature exactly, the procedures
refer chapter 8-8, page 25.
4)Hold the " Electrode Handle " ( 4-2, Fig. 2 ) by hand
and let the " Sensing head " ( 4-3, Fig. 2 ) immersed
wholly into the measured solution and little shake the
electrode.
5)The main display will show the pH value, the
bottom display will show the setting manual Temp.
value.
4-2 pH measurement ( ATC , automatic Temperature )
1)All the procedures are same as
5-1 pH measurement ( manual Temp. compensation)
but should prepare one temperature probe ( optional,
TP-07 ), insert the TP-07's plug into the " Temp. Socket "
( 3-13, Fig. 1 ), immerse the sensing head of temperature
probe ( TP-07 ) into the measurement solution.
2)The main display will show the pH value, the bottom
display will show the sensing Temp. value of the
measured solution ( measured from ATC probe, TP-07 ).
8
Table of contents
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