Application Field
Products Description
General Features:
1. Large LCD screen with controllable white backlight.2. Built-in microprocessor chip has Intelligent functions such as auto calibration, ATC, data storage, function settings, auto
diagnosis, auto power off, and undervoltage prompt, etc.

Features:
● pH Mode:
1. Auto recognition of 25 buffers with three kinds of options: Europe & USA, NIST and China. Support 1, 2, 3 point calibration.

● Conductivity Mode:

1. Adopt advanced conductivity measurement technology, with conductivity electrode (K=1), it can meet measuring accuracy
requirement for range of 0.5μS/cm ~ 200mS/cm.

2. Can switch among conductivity, TDS, salinity and resistivity. Multinomial calculation for TDS and salinity to ensure the
conversion precision of the full scale.
3. Auto recognition of 8 conductivity standard solution with 2 kinds of options: Europe & USA, and China.
● DO Mode:

1. It has functions of ATC, auto salinity compensation and manual pressure compensation.
2. Polarographic DO electrode, short polarization time (3-5 mintues).
● ISE Mode:

1. Can test electric potential, pH, pX, ORP, ion concentration and temperature.
2. Can switch 6 kinds of concentration units: μg/L, mg/L, g/L, mol/L, mmol/L, PX.
3. Auto recognition of buffers with three kinds of options: Europe & USA, NIST and China. Support 1, 2, 3, 4, 5 point calibration.

Model
Description
Application
P611
pH meter
General laboratory pH meter, which can be used in most of the areas related to water quality analysis.
P612
Conductivity meter
Used to measure the conductivity value of conventional aqueous solutions, especially in education and scientific research.
P613
pH/Conductivity meter
Suitable for high-precision pH/conductivity measurement in scientific research, quality control, biotechnology, fine
chemicals,etc.
P614
DO meter
Applicable to aquaculture, water source monitoring, sewage treatment and environmental monitoring, etc., also widely used in
education and scientific research.
P615
pH/DO meter
Suitable for biotechnology, aquaculture, power plants and environmental protection industries, especially in education and
research.
P616
Conductivity/DO meter
Widely used in biotechnology,aquaculture,power plants and environmental protection industries.
P618-F
Fluoride ion meter
Test and analysis of the fluoride in drinking water, surface water, sea water, living sewage and industrial wastewater and the
fluorine ion in mineral ,organic,and biological materials.
P618-Na
Sodium ion meter
Suitable for measurement of sodium ion and pH value in natural water,boiler water and industrial drainage,especially for the
quality monitoring of high purity water in power plant.
P618-Cl
Chloride ion meter
Measure chloride ion and pH value in drinking water, food and sewage.
P618-Ca
Calcium ion meter
Test calcium ion and pH value of water solutions. Widely used in the analysis and research of water quality, biochemistry and
biomedicine.
P618-Br
Bromide ion meter
Test bromide ion and pH value in drinking water, food and sewage.
P618-NO
Nitrate ion meter
Test nitrate ion and pH value in drinking water, food and sewage.
P618-K
Potassium ion meter
Measure potassium ion and pH value in drinking water, food and sewage.
P618-NH
Ammonia Ion Meter
Test ammonia & nitrogen and pH value in drinking water, food and sewage.
P618-Cu
Copper ion meter
Test copper ion and pH value in food, beverage, electroplating industry and sewage.
P618-I
Iodide ion meter
Test iodide ion and pH value in drinking water, food and sewage.
Model
P611
P612
P613
P614
P615
P616
P618


Standard Accessaries
Electrode holder
pH composite electrode
Cond. electrode (K=1)
DO electrode
Ion electrode
Temperature probe
Reference electrode
pH buffer solution
DO filling solution
Membrane cap
Cathode polishing paper
Power adapter
Manual
Model
P611
P612
P613
P614
P615
P616
P618


Parameters
pH/mV
ISE
Cond./TDS/Sal./Res.
DO
Temp.


pH
Measuring range
(-2.00~19.99)pH








Resolution
0.1/0.01 pH
Accuracy
Meter:±0.01pH; Overall: ±0.02pH
Auto calibration
1, 2, 3 point
Buffer
Europe & USA, NIST, China standards
Input current
≤2×10-12 A
Input impedance
≥1×1012 Ω
Stability
±0.01 pH/3h
Temp. compensation
(0 ~ 100)℃, auto or manual


mV
Measuring range
±1999.9mV








Resolution
1 mV
Accuracy
±0.1% FS


pX
Measuring range
(0.000-14.000) pX


Resolution
0.01 pX
Accuracy
±0.02 pX
Temp. compensation
(0 ~ 100)℃, auto or manual
Auto calibration
1, 2, 3, 4, 5 point


Ion Conc.
Measuring range
(0-19990)
Resolution
4 significant figures (scientific notation)
Accuracy
±0.5%


Cond.


Measuring range
Conductivity:






(0.00~19.99)μS/cm
(20.0~199.9)μS/cm
(200~1999)S/cm
(2.00~19.99)mS/cm
(20.0~199.9)mS/cm
TDS:(0 ~ 100)g/L
Salinity:(0 ~ 100)ppt
Resistivity:(0 ~ 100)MΩ·cm
Resolution
0.01/0.1/1μS/cm; 0.01/0.1 mS/cm
Accuracy
±1.0% FS, Overall:±1.5% FS
Temp. compensation
(0~100)℃(Auto/manual)
Electrode constant
0.1 / 1 / 10 cm-1
Reference Temp.
25℃、20℃、18℃


DO
Measuring range
(0 ~ 20.00) mg/L(ppm), (0 ~ 200.0)%






Resolution
0.1/0.01 mg/L(ppm), 1/0.1 %
Accuracy
Electrode: ±0.10 mg/L, Instrument: ±0.40 mg/L
Response time
≤30s (25℃, 90%response)
Residual current
≤0.1 mg/L
Temp compensation
(0 ~ 45)℃, auto
Salinity compensation
(0 ~ 45) ppt, auto
Pressure compensation
(66 ~ 200) kPa (manual)
Auto calibration
Air saturated by water, water saturated by air
Electrode type
Polarographic


Temp.
Measuring range
(0 ~ 100)℃














Resolution
0.1℃
Accuracy
5 ~ 60℃:±0.4℃ Others: ±0.8℃


Other
Display
Large LCD screen














Data storage
200 sets
Power
Two AA batteries (1.5V x2)
Ambient Temp.
5 ~ 35 ℃
Ambient Humidity
≤85%
IP grade
IP57 Dustproof and waterproof
Dimensions/N.W.
(65×120×31)mm/180g
Shipping Size/G.W.
(460×300×55)mm/1Kg