
pH, ORP, CD, TDS, DO, SALT
Your purchase of this
pH, ORP, CD, TDS, DO,
SALT METER 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
proper operating
techniques are
developed. Please read
instructions carefully
and always keep this
manual within easy

1. FEATURES..............................................................................................................
2. SPECIFICATIONS........................................................................................................
2-1 General Specifications................................................................................................
2-2 Electrical Specifications.........................................................................
3. FRONT PANEL DESCRIPTION...........................................................................
4. FUNCTION SELECTION.......................................................................................
12
5. PH/mV MEASURING and CALIBRATION
PROCEDURE....................................................................................................
13
6. CONDUCTIVITY/TDS MEASURING and
CALIBRATION PROCEDURE...................................................................................
7. SALT MEASURING and calibration PROCEDURE............................................................
23
8. DO ( Dissolved Oxygen ) MEASURING
and CALIBRATION PROCEDURE...................................................................................
9. OTHER FUNCTION....................................................................................................
9-1 Data Hold.........................................................................................................................
9-2 Record ( Max./ Min. reading )....................................................................
9-3 LCD Backlight ON/OFF....................................................................................................
10. ADVANCED SETTING...............................................................................
11. POWER SUPPLY from DC ADAPTER.....................................................
12. BATTERY REPLACEMENT.............................................................................................
13. SYSTEM RESET.................................................................................................................
14. RS232 PC SERIAL INTERFACE.....................................................................................
15. OPTIONAL ACCESSORIES.........................................................................................

1. FEATURES
* One meter for multi purpose operation :
PH/ORP, CD/TDS, Dissolved Oxygen, Salt measurement.
* pH : 0 to 14.00 pH, ORP : ±1999 mV.
* Conductivity : 200 uS/2 mS/20 mS/200 mS.
* Dissolved oxygen : 0 to 20.0 mg/L.
*
Salt : 0 to 12 % salt ( % weight ).
* Optional PH, ORP, CD/TDS/Salt, Dissolved Oxygen and
* PH meter function can select PH or ORP.
* PH measurement can select ATC or manual temperature
adjustment.
* PH measurement can make the auto calibration for
pH 7, pH 4 and pH 10 or other value.
* Conductivity measurement can select uS/mS or TDS
* Conductivity measurement can select Temp. Coefficient
of measurement solution.
* ATC for the conductivity measurement.
* Dissolved oxygen meter use the polar graphic type
oxygen probe with temperature sensor, high precision
measurement for Dissolved Oxygen ( DO ) and
temperature measurement.
* Heavy duty dissolved oxygen probe, probe head can
connect with BOD bottle.
* DO use the automatic Temp. compensation.
* DO meter build in " % SALT " & " Mountain Height "
compensation value adjustment.
* Separate probe, easy for operation of different
measurement environment.
1

* Wide applications: water conditioning, aquariums,
beverage, fish hatcheries, food processing,
photography, laboratory, paper industry, plating
industry, quality control, school & college, water
conditioning.
* 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 DC 9 V (006 P) batteries or DC 9V adapter.
* RS232/USB PC COMPUTER interface.
2

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/ORP
Function Conductivity/TDS(Total Dissolved Solids)
Dissolved Oxygen
Salt
Advanced
* Auto power OFF management
setting
*
Set temperature unit to ℃ or ℉
* Set DO salt% compensation value
* Set DO height ( meter ) compensation value
* Set DO height ( feet ) compensation value
* Set CD temperature compensation factor
* Set CD to TDS or TDS to CD, CD only
* Set pH manual Temp. compensation value
Data Hold Freeze the display reading.
Memory Recall Maximum & Minimum value.
`
3

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.
Operating 0 to 50 ℃.
Temperature
Operating Less than 85% R.H.
Humidity
Power Supply Alkaline or heavy duty DC 9 V (006 P)
battery or equivalent.
DC 9V adapter input. ( AC/DC power
Normal operation ( LCD Backlight is OFF) :
Approx. DC 14 mA.
*
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..............................................................
* Conductivity/TDS probe,
Salt probe.......CDPB-03.......................................................

PH electrode.......................
Accessories PE-03, PE-11, PE-01, PE06HD
PE-04HD, PE-05T, PE-03K7
* ATC probe ( Automatic Temperature
Probe )........................................ TP-07
* pH 7 buffer solution................. PH-07
* pH 4 buffer solution..................... PH-04
*
Pt Conductivity probe......................................
* 1.413 mS Conductivity Standard
Solution................................ CD-14
*
Oxygen probe..........................................
OXPB-11
* Spare Probe head with Diaphragm set
.........................................................
Probe-filling Electrolyte....................
OXEL-03
* ORP Electrode........................... ORP-14
AC to DC 9V adapter.
USB cable, USB-01.
RS232 cable, UPCB-02.
Data Acquisition software,SW-U801-WIN.
Hard carrying case ( CA-06 )..................................
1 PC
2-2 Electrical Specifications (23±5 ℃)
A. PH/mV
PH
Optional,
Electrode
Any PH electrode with BNC connector.
Measurement PH 0 to 14 PH
mV
Input 10^12 ohm
Impedance
5

Temperature Manual 0 to 100 ℃, be adjusted by
Compensation push button on front panel.
for pH
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.
Optional *
PH electrode.......................
PE-03, PE-11, PE-01, PE06HD
probe and
accessories * ATC ( automatic temperature
probe )....................................... TP-07
* pH 7 buffer solution.....................
* pH 4 buffer solution......................
* ORP electrode.............................. ORP-14
Measurement Range Resolution Accuracy
PH 0 to 14 PH 0.01 PH ±(0.02 PH + 2 d)
mV
* PH accuracy is based on calibrated meter only.
B. Conductivity
Conductivity probe Optional, Carbon rod electrode for long life.
Function * Conductivity ( uS, mS )
* TDS ( Total Dissolved Solids, PPM )
* Temperature ( ℃,℉)
Temperature
Automatic from 0 to 60 ℃ (32 - 140 ℉),
Compensation with temperature compensation factor
variable between 0 to 5.0% per C.
Probe 0 to 60 ℃.
Operating Temp.
Probe Dimension Round, 22 mm Dia. x 120 mm length.
Optional *
Conductivity probe......................................
Pt Conductivity probe......................................
accessories * 1.413 mS Conductivity Standard
Solution...........................................

1. Conductivity ( uS, mS )
Range Measurement Resolution Accuracy
200 uS
0.1 uS
2 mS 0.2 to 2.000 mS 0.001 mS ±(2% F.S.+1d)
2 to 20.00 mS 0.01 mS * F.S. -
200 mS 20 to 200.0 mS 0.1 mS full scale
* Temperature Compensation :
Automatic from 0 to 60 ℃ ( 32 - 140 ℉ ), with temperature
compensation factor variable between 0 to 5.0% per C.
* The accuracy is specified under measurement value ≦ 100 mS.
* mS - milli Simens * @ 23±5℃
2. TDS ( Total Dissolved Solids )
Range Measurement Resolution Accuracy
200 PPM 0 to 132 PPM 0.1 PPM
2,000 PPM 132 to 1,320 PPM 1 PPM ±(2% F.S.+1d)
20,000 PPM 1,320 to 13,200 PPM 10 PPM * F.S. 200,000 PPM 13,200 to 132,000 PPM 100 PPM full scale
* Temperature Compensation :
Automatic from 0 to 60 ℃ ( 32 - 140 ℉ ), with temperature
compensation factor variable between 0 to 5.0% per ℃.
* The accuracy is specified under measurement value ≦ 66,000 PPM.
* PPM - parts per million * @ 23±5℃
3. Temperature
Function Measuring Range Resolution Accuracy
℃ 0 ℃ to 60 ℃ 0.1 ℃ ±0.8 ℃
℉ 32 ℉ to 140 ℉ 0.1 ℉ ±1.5 ℉
* @ 23±5℃
7

C. Salt
Conductivity Optional,
probe Carbon rod electrode for long life.
Measurement 0 to 12 % salt ( % weight ).
Range
Resolution 0.01 % salt.
Accuracy 0.5 % salt value
* F.S. : full scale.
Temperature
Automatic from 0 to 60 ℃ (32 - 140 ℉),
Compensation with temperature compensation factor
variable between 0 to 5.0% per C.
Probe 0 to 60 ℃.
Operating
Temperature
Probe Round, 22 mm Dia. x 120 mm length.
Dimension
Optional
probe and *
Pt Conductivity probe......................................

D. Dissolved oxygen
Oxygen
Probe The polarographic type oxygen probe with
Measurement Dissolved Oxygen 0 to 20.0 mg/L ( liter ).
& Range Oxygen in Air 0 to 100.0 %.
0 to 50 ℃.
Resolution Dissolved Oxygen 0.1 mg/L.
Oxygen in Air 0.1 % O2 .
0.1 ℃.
Accuracy Dissolved Oxygen ±0.4 mg/L.
(23±5 ℃) Oxygen in Air ±0.7% O2.
±0.8 ℃/1.5 ℉.
Probe Temperature 0 to 50 ℃,
Compensation
& Adj. Salt 0 to 50 % Salt
Height ( M. T.) 0 to 8900 meter
Probe Weight 335 g/0.74 LB
( batteries & probe included )
Probe Size 190 mm x 28 mm Dia. ( 7.5" x 1.1" Dia. )
Optional * Oxygen probe.......................................... OXPB-11
Accessories * Spare Probe head with Diaphragm set
......................................................... OXHD-04
* Probe-filling Electrolyte.................... OXEL-03
@ Above specification tests under the environment RF Field Strength
less than 3 V/M & frequency less than 30 MHz only.
9

3. FRONT PANEL DESCRIPTION
Fig.1
10

3-2 Power Button ( Backlight Button )
3-3 Hold Button ( ESC Button )
3-4 REC Button
3-5 ▲ Button ( Range Button)
3-6 ▼ Button (Function Button )
3-8 Enter Button
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 DO Socket
3-15 CD Socket
3-16 PH Socket ( BNC Socket )
3-17 DC 9V Power Adapter Input Socket
3-18 Reset Button
3-19 RS-232 Output Terminal