Yoke P613 PH User manual
Shanghai Yoke Instrument Co.,Ltd.
Model P613 PH /Conductivity Meter
Operation Manual
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Table of Contents
1. Brief Introduction -----------------------------------------------------------------------------------1
2. Technical Parameters ------------------------------------------------------------------------------ 2
3. Instructions to the Meter ---------------------------------------------------------------------------3
3.1. LCD Display --------------------------------------------------------------------------------------3
3.2. Operation Keys -----------------------------------------------------------------------------------4
3.3. The Storage, Recall and Elimination of the Measuring Information ----------------------5
4. P/H Measurement ----------------------------------------------------------------------------------6
4.1. Preparation Work ------------------------------------------------------------------------------ --6
4.2. Meter Calibration --------------------------------------------------------------------------------6
4.3. PH solution Test ----------------------------------------------------------------------------------8
4.4. Parameter Setting ---------------------------------------------------------------------------------8
4.5. Considerations------------------------------------------------------------------------------------14
4.6The Self-diagnose Information------------------------------------------------------------------14
5. MV Measurement ---------------------------------------------------------------------------------14
6. Conductivity Measurement ----------------------------------------------------------------------14
6.1. Preparation Work ------------------------------------------------------------------------------- 15
6.2. Meter Calibration ------------------------------------------------------------------------------- 15
6.3. Conductivity Test --------------------------------------------------------------------------------16
6.4. Important Statement ---------------------------------------------------------------------------- 16
6.5. Parameter Setting ------------------------------------------------------------------------------- 18
6.6. Considerations ----------------------------------------------------------------------------------- 22
7. Meter’s Complete Kit ----------------------------------------------------------------------------- 23
8. Warranty ---------------------------------------------------------------------------------------------24
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1. Brief Instruction:
Thanks for buying and using the model P613 pH / mV / Conductivity Meter (the
following called “meter”in short).
Before using this meter, please read the operation manual carefully in order to help use
and maintain it correctly. On the basis of improving instrument of performance constantly,
we reserve the right of changing the content of this manual and accessories in case of not
notifying in advance.
This meter is a perfect combination with the most advanced electronic technology, sensor
technology and software design. The meter can measure the parameters of pH and
conductivity for high accuracy water solution. It is the best portable conductivity meter
with the highest performance and the lowest cost. It is suitable for the trade such as the
mining industry, power plant, water treatment projects and environmental protection, etc.,
especially has more extensive application in the field and spot test.
Built-in microprocessor chip, beautiful appearance, multi-functional and easy to use, this
meter has the following prominent features:
1.1.Built-in microprocessor chip, with the intelligent functions of automatic calibration,
automatic/manual temperature compensation, data storage, function setting and
automatic power off and low voltage display etc. Equips with calibration solution and
special carrying case, easy to use.
1.2.Adopts digital filter and step slipping technology to intelligently improve meter’s
response speed and result accuracy. “ ” will appear when reading to be stable.
1.3.A new type of acidity meter electrode and conductance electrode,it can be measured
pH,mV,COND,RES,TDS,SAL,it is more convenient to use, more accurate to measure.
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1.4.Automatic identification of PH buffer solution and conductivity calibration solution,
user can choose anyone from three series of buffer solutions: Europe & U.S.A. series,
NIST series, and China series,can be a point, two and three points to calibrate the way
to facilitate customer selection.
1.5. Meter’s circuit board adopts SMT film-covering technology to improve meter’s
production reliability.
1.6. Meter has the back light LCD display monitor.
1.7. IP54 dust and water resistant.
2. Technical Parameters:
2.1. pH:
Measuring range
(-2.00 - 19.99) pH
(Depending on type of electrode used)
Resolution
0.1/0.01 pH
Accuracy
Meter:±0.01pH; Complete Kit: ±0.02pH
Input current
≤2×10-12 A
Input impendance
≥1×1012 Ω
Stability
±0.01 pH/3h
Temp. Compensation range
(0 - 100) ℃(auto/manual)
2.2. mV:
Measuring range (mV/ORP/EH)
-1999 mV - 0 - 1999mV
Resolution
1mV
Accuracy
Meter:±0.1% FS
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2.3. Conductivity：
Measuring range
Conductivity:
(0.00 - 19.99)μS/cm (20.0 - 199.9)μS/cm
(200 - 1999)μS/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
Meter:±1.0% FS, connect meter with electrode:±1.5% FS
Temp. compensation range
(0 - 100) ℃(manual / auto)
Electrode constant
0.1 / 1 / 10 cm-1
Benchmark temperature
25℃, 20℃and 18℃
2.4. Other Technical Parameters:
Data storage
150 groups
Storage content
Series number, measuring value, measuring unit
and temperature,
Power
Two AA batteries (1.5V x2)
Size and weight
Meter: (165×90×32)mm/310g
Quality and safety certification
ISO9001:2000, CE and CMC
2.5. Working Condition:
Environment temperature
5 - 35 ℃(0.01 grade)
Environmental humidity
≤85%
IP rating
IP54 dust and water resistant.
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3. Instructions to the Meter:
3.1. LCD Display:
① —— Parameters mode icon
② —— Measuring value
③ — — Serial number and icon as measuring value to be stored and recalled, and
indication icon for special state.
M+ —measuring value to be stored icon; RM —reading to be recalled icon;
④ —— Measuring unit
⑤ —— Temperature measuring value and unit
⑥ —— Measuring value to be stable icon
⑦ —— Electrode calibration indicate icon
⑧ — — Indication icon of low voltage, appears when the voltage less than 2.4V, call
attention to change the batteries.
3.2. Operation Keys:
The meter has 7 operation keys in all.
3.2.1. —Switch key
In the measurement mode open and shutdown function , other mode keys do not
work.
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3.2.2. —Calibration key
(a) When in the measurement state, press this key to enter into calibration mode.
(b)When in the non - measurement state, the key is returned as the exit key.
3.2.3. —Function key
(a)When in pH measurement mode, Short-time press (time<1.5s) switch the measuring
parameters, the meter will display
→
(b) When in Conductivity measurement mode, short press (less than 1.5s) the key to in
turn change measuring mode: COND→RES →TDS →SAL.
（c）Long press(≥2S)switching PH and electrical conductivity measurement mode.
3.2.4. —Back light and data deleting key
(a) When in the measuring state, short press (less than 1.5s) to open or close the back
light display.
(b) When the storage records are queried, long press (more than 5s) to delete the saved
data.
3.2.5. —Adding and querying keys . —Reduce and store keys
(a) When in measurement mode, short time press (less than 1.5s) the key to store
the measuring data. Short time press (less than 1.5s) the key to recall the saved
data;
(b) When in the parameter setting state, press the two key to alter the number.
3.2.6. —The combination key of enter and return.
(a) When in measurement mode, long time press (more than 2s) the key to enter into
parameter setting state;
(b) When in the non measurement state, short time press (less than 1.5s) the key to
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determine the current choice.
3.3. The Storage, Recall and Deletion of the Measuring Information:
3.3.1. Store the measuring information:
In the measuring mode, when the measuring data is stable and appear the “ ”,
short-time press key(≤1.5s),LCD will display “M+ ”icon and storage serial
number, and meanwhile memory all the measuring information. Meter can store 150
groups of data(A total of 150 sets of data stored in a variety of different units).
3.3.2. Recall measuring information:
(a) Under the measuring mode, depress the key, meter will recall the last stored
information, and the storage number and “RM”icon will appear in the lower right
corner of the LCD, and the complete measuring information. Again press
or key, meter will in turn recall all the measuring information.
(b) In the recalling mode, press key to return to the measuring mode.
3.3.3. Deleting the stored measuring information:
In the recalling mode, long-time press the key for 2 seconds, LCD will appear
“ ” for 2 seconds. It means the storage has been eliminated, and returns to
measuring mode.
4. pH Measurement:
4.1. Preparation Work:
4.1.1. Press key to turn on ,press to choose pH measurement mode.
4.1.2 Check E-201-9 composite electrode, check whether the PH composite electrode glass
remains moist. If the glass bubble is damaged, the electrode will not be used
properly. The surface of the bulb is too dry. It needs to be soaked in saturated
potassium chloride solution for 24 hours, then activated, and then used.
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4.1.3.Insert the PH composite electrode and the temperature electrode into the
corresponding interface.
4.2. Meter Calibration:
4.2.1. Press to enter into calibration mode, LCD displays the twinkling “ ”
indicate to enter into the first point calibration.
4.2.2. Wash the pH electrode in purified water and dry it, then immerge it into the pH7.00
buffer solution, rock the electrode holder and then still, waiting for the data stable and
appear “ ”, then again press key , the LCD will appear a twinkling 7.00
pH,make sure that this calibration is unmistakable, please press key to confirm
the first point,at this time the LCD displays the twinkling “ ”，Prompt for second
point calibration，Or press the key to exit the calibration mode.
4.2.3. Wash the pH electrode in purified water and dry it, then immerge it into the pH4.00
buffer solution, rock the electrode holder and then still, waiting for a stable data and
appear“ ”,then again press key , the LCD will appear a twinkling
4.00pH,make sure that this calibration is unmistakable, please press key to
confirm the second point,at this time the LCD displays the twinkling “ ”Prompt
for the third point calibration，Or press the key to exit the calibration mode.
4.2.4. Wash the pH electrode in purified water and dry it, then immerge it into the pH10.01
buffer solution, rock the electrode holder and still, waiting “ ” for the data stable
and appear, then again press key , LCD will appear a twinkling 10.01
pH,,make sure that this calibration is unmistakable, please press key to
confirm the third point, at the same time, exiting the calibration mode into the
measurement mode,at the same time, the lower right corner of the LCD displays
simultaneously,the representative instrument was calibrated at third
points.
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4.2.5.Calibration description:
(a) This meter can adopt random one-point, two-point or three-point automatic calibration,
after the first point calibration (see item 4.2.2.), press to exit calibration
mode and enters into measuring mode. The indication icon “ ” will appear on
the lower left corner of LCD. When the measuring accuracy is ≤±0.1pH, user just
need to choose one kind buffer solution to take one-point calibration according to the
measuring range.
(b) After the second point calibration, (see item 4.2.3.), press to exit calibration
mode and enter into measuring mode. The indication icon “ ” for
tow-point calibration will appear on the lower left corner of LCD. User can choose
pH4.00 and pH 7.00 to calibrate if the measurement is just within the acidity range
and choose pH 7.00 and pH 10.01 to calibrate if just within the alkalinity range.
(c) User should choose three-point calibration so as to reach a more accurate
measurement if the measuring range is wide, or if the electrode has been used for long
or has ageing phenomenon. As to the new electrode which be used for the first time, it
must be calibrated by three-point calibration to keep the unanimity of the meter slope
adjustment with the pH electrode.
4.3. PH Solution Test:
Immerge pH electrode into the sample solution after washing and dry it, rock the
electrode holder and still, when the LCD appears the icon “ ” to take the reading
after displaying value to be stable.
Note: According to the pH equal temperature measuring theory: the closer the
temperature of the sample solution with the calibration solution, the more accurate
the measuring value will be acquired. So please comply with this theory.
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