Sanxin PC5 User manual

PC5 pH/Conductivity Tester
pH/Conductivity/TDS/Salinity/Temp.
Operation Manual
Shanghai San-Xin Instrumentation Inc.

PC5 pH/Cond. Tester Operation Manual
1. Battery Installation
Please install batteries according to the following steps. Please note polarity: “+”(anode) is
upward; “-” (cathode) is downward.
2. Keypad
Short press: key-hold time < 2 seconds
Long press: key-hold time > 2 seconds
1. Short press to turn ON the tester and long press to turn
OFF the tester;
2. When turned OFF, long press to enter parameter setting;
3. In measurement mode, short press to turn on backlight.
1. In measurement mode, short press to switch
parameter →→→;
2. In mode setting, short press to change parameter
(Unidirectional).
1. Long press to enter calibration mode;
2. In calibration mode, short press to confirm calibration;
3. When measured value is locked, short press to unlock.
①Pull the battery cap up
②Push the battery cover along to the direction of arrow
③Open the battery cover
④Insert the batteries (4×AAA) and ensure the batteries polarity is as per drawing
⑤Close the battery cover
⑥Lock the battery cover along to the direction of arrow
⑦Fit the tester’s cap while making sure to push all the way down. The tester’s
waterproof design may be compromised if the cap is not fitted correctly.
+
+
+
+
-
-
-
-
Diagram - 1
Battery Cap
LCD Screen
Buttons
Probe Ring
pH/Cond Probe
Probe Cap
Screw Ring
Keypad

3. pH Calibration
3.1. Before first use or unused for a long time, fill certain 3M KCl solution in the calibration bottle,
soak probe for at least 15 minutes. Pay attention that, soaking solution little higher that pH bulb
will be enough. Users can make this solution by themselves. Preparation: dissolve 25g KCl in 100
ml of pure water.
3.2. Rinse the probe in pure water and dry it.
3.3. Fill certain amount (about half volume of calibration bottle) of pH7.00 and
pH4.00 buffer solution in separate pH calibration bottles;
3.4. Long press to enter calibration mode; Short press to exit.
3.5. Dip the probe in pH7.00 buffer solution and stir gently, leave to Stabilize
(LCD displays as shown in the picture on the right). Short press to
complete 1-point calibration. The tester then returns to measurement mode and calibration icon
appears on the LCD.
3.6. For multi-point calibration (either 2 or 3 point), rinse the probe in clean water and repeat
step 3.5 using 4.01pH and/or 10.01pH calibration solutions. After completion of each point, the
calibration icons (for 4.01pH) and (for 10.01pH) will appear on the LCD near the .
4. pH Measurement
Short press to turn on the tester. Rinse the probe in pure water and dry it. Dip the probe in
sample solution, stir gently, leave it to stabilize. Get readings after LCD displays .
5. Special Notes
5.1. Tester can perform 1~3points automatic calibration. But pH7.00 or pH6.86 buffer solution
must be used to make 1st point calibration. Then use other buffer solution to conduct 2nd or 3rd
point calibration. Tester will recognize 5 kinds of pH buffer solutions. Refer to the following chart:
Calibration
USA Series
NIST Series
Indication icon
Recommended
1-point
7.00 pH
6.86 pH
Accuracy ≥ 0.1pH
2-point
7.00 pH,
4.01 pH or 1.68pH
6.86 pH,
4.01 pH or 1.68pH
Range: < 7.00pH
7.00 pH,
10.01pH or 12.45pH
6.86 pH,
9.18 pH or 12.45pH
Range: > 7.00pH
3-point
7.00pH, 4.01 or 1.68pH,
10.01 or 12.45pH
6.86pH, 4.01 or 1.68pH,
9.18 or 12.45pH
Range: 0~14.00pH
Diagram - 2

5.2. The tester has self-diagnostic function, information as following chart:
Icons
Self-diagnostic information
Checking
Wrong pH buffer solution or the recognition
range of calibration solution exceeds standard.
1. Check whether pH buffer solution is correct.
2. Check whether the probe is damaged.
Press key when measuring value is not
stable during measurement.
Press key when icon appears.
6. Conductivity Calibration
6.1. Press key to switch to conductivity measurement mode. Rinse the probe in pure water
and dry it.
6.2. Fill certain amount (about half volume of the calibration bottle) of 1413μS and 12.88mS
conductivity standard solution in separate calibration bottles.
6.3. Long press key to enter calibration mode, short press to exit.
6.4. Dip the probe in 1413μS conductivity standard solution and stir gently, leave to
Stabilize (LCD display as shown in the picture on the right), Short press key
to complete 1-point calibration, The tester then returns to measurement mode and
indication icon will appears on the LCD.
6.5. For multi-point calibration (either 2 or 3 point), rinse the probe in clean water and repeat step
6.4 using 84uS standard solution and / or 12.88mS standard solution. After completion of each
point, the calibration icons (for 84uS) and (for 12.88mS) will appear on the LCD near
the .
7. Conductivity Measurement
7.1. Press key to turn on the tester. Rinse the probe in pure water and dry it. Dip the probe in
sample solution, stir gently, leave to Stabilize, Get reading after LCD displays .
7.2. Press key to switch between →→→
8. Notes
8.1. The tester uses 84μS, 1413μS and 12.88mS conductivity standard solution. User can conduct 2
or 3point calibration. Refer to the chart as following. Generally, calibrating the tester with 1413μS
conductivity standard solution alone will meet the testing requirement.
Diagram-3

Calibration Indication Icon
Calibration Standards
Measuring Range
84μS/cm
0 ~ 200μS/cm
1413μS/cm
200 ~ 2000μS/cm
12.88mS/cm
2 ~ 20mS/cm
8.2. The tester has been calibrated in factory. Generally, user can use the tester directly or users
can test conductivity standard solutions first. If the error is big, then calibration is needed.
8.3. Temperature compensation factor: The default setting of the temperature compensation
factor is 2.0%/℃. User can adjust the factor based on following test solution and experimental
data in parameter setting P4.
Solution
Temperature
compensation coefficient
Solution
Temperature
compensation coefficient
NaCl solution
2.12%/°C
10% hydrochloric acid
solution
1.32%/°C
5%NaOH solution
1.72%/°C
5% sulfuric acid solution
0.96%/°C
Dilute ammonia
solution
1.88%/°C
8.4. TDS and conductivity is linear related, and its conversion factor is 0.40~1.00. Adjust the factor
in parameter setting P5. The factory default setting is 0.71. Salinity and conductivity is linear
related, and its conversion factor is 0.5. The tester only needs to be calibrated in conductivity
mode, then after calibration, the meter can switch from conductivity to TDS or salinity mode.
8.5 With self-diagnostic information:
The tester has self-diagnostic function, information as following chart:
Icons
Self-diagnostic information
Checking
Wrong conductivity standard solution
or the recognition range of calibration
solution exceeds standard.
1. Check whether conductivity standard
solution is correct.
2. Check whether the probe is damaged.
Press key when measuring value is
not stable during measurement
Press key when icon appears.

9. Parameter Setting
9.1. Parameter setting method
When turned off, long press to enter parameter setting→Short press to switch P1-P2…
P8→Short Press parameter flickering→Short press to choose parameter→Short press
to confirm parameter→Long press to return to measurement mode.
9.2. Setting chart
9.3. Parameter setting instruction
a) Select standard pH buffer solution (P1):
There are two options of standard buffer solutions: USA series and NIST series. Factory default
setting is USA series.
b) Automatic lock (P2):
Select “On” to activate auto lock function. When reading is stable for more than 10 seconds, the
tester will lock the value automatically, and HOLD icon will display on LCD. Press key to
cancel automatic hold.
c) Backlight (P3):
“Off”-turn off backlight, “On”-turn on backlight, 1- backlight will last for 1 minute.
d) Temperature compensation factor (P4):
Adjust temperature compensation factor between 0.00~4.00%. Factory default setting is 2.00%.
Details refer to clause 8.3.
Symbol
Parameter Setting Contents
Code
Factory Default
P1
Select pH buffer standards
USA –NIST
USA
P2
Select automatic lock
Off –On
Off
P3
Select backlight
Off - 1- On
1
P4
Temperature compensation factor
0.00 ~ 4.00%
2.00%
P5
TDS factor
0.40 ~ 1.00
0.71
P6
Salinity unit
ppt - mg/L
ppt
P7
Select temperature unit
℃-℉
℃
P8
Restore to factory default
No –Yes
No

e) TDS factor (P5):
Adjust TDS factor between 0.40~1.00. Factory default setting is 0.71.
f) Salinity and temperature unit (P6 and P7):
Salinity unit: ppt and mg/L, Temperature unit: ℃and ℉.Factory default setting is ppt and ℃.
g) Factory default setting (P8):
Select “Yes”to recover instrument calibration setting to theoretical value (pH and conductivity),
parameter setting returns to initial value. This function can be used when instrument does not work
well in calibration or measurement. Calibrate and measure again after recover the instrument to
factory default status.
10. Technical Specifications
pH
Measuring range
-2.00 ~ 16.00pH
Resolution
0.01pH
Accuracy
±0.01pH
Calibration points
1 ~ 3points automatic calibration
Automatic temperature
compensation
0 ~ 50℃
Cond.
Measuring range
0~200.0μS, 0~2000μS, 0~20.00mS
Resolution
0.1/1μS, 0.01mS
Accuracy
±1%F.S
Calibration points
1 ~ 3points automatic calibration
TDS
Measuring range
0~100.0ppm, 0~1000ppm,
0~10.00ppt
Salinity
Measuring range
0 ~ 10.00ppt
Temp.
Measuring range
0 ~50℃
Resolution
0.1℃
Accuracy
±0.5℃

11. Other Specifications
LCD
Ultra clear STN LCD. 180°viewing angle
Blue: Measurement. Green: Calibration. Red: Alarm
Reading lock
HOLD
Low battery reminder
Replace batteries when icon blinks
Automatic power-off
8 minutes after last key press
Water proof rating
IP67 floats on water
Power
DC3V, AAA batteries×4
Battery life
Continuous operation>200 hours
Dimension/Weight
Tester: 40×40×178mm/133g;
Suitcase: 255×210×50mm/700g;
12. Probe Replacement
Twill off the screw ring, unplug the probe, plug in new probe (pay attention to probe’s position),
and screw on the screw ring.
13. Warranty
We warrant this instrument to be free of defects in parts and workmanship for two years from
date of shipment (a six month limited warranty applies to probes). This warranty does not apply to
defects resulting from actions of the user, such as misuse, improper wiring, operation outside of
specification, improper maintenance or repair, or unauthorized modification.
Warranty period is the time limit to provide free service for the products purchased by customers,
not the service life of the instruments or probes.
Shanghai San-Xin Instrumentation, Inc.
Add: 3/F. Building No.4, No. 471 Guiping Road, Shanghai, China. 200233
Tel: [phone] Fax: [phone]
Website: www.shsan-xin.com E-mail: [e-mail]