Chemitech IT Perdana pH/ORP-3500 Series User manual

pH/ORP-3500
pH/ORPTransmitting controller
Operation manual
V1.1
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

Introduction
Thanks for choosing pH/ORP-3500 series pH/ORP meter. Please read the operation manual
carefully before installation. Proper sensor installation and parameter setting would give maximum
performance and advantage of this instrument for your good usage. So please carefully read this
manual before installation.
This instrument is a precise electrochemical analysis Dosing &Control Integration System,
which should be operated by technicians with relevant professional knowledge.
Please contact technical backup when you meet any problems during installation and usage.
Check the actual product with complete set after you receive the package, and contact us if
any missing or damage.
Our serious promise:
1. The meter’s quality guarantee is one year from the date of purchasing. During this period,
if the meter has quality problems, manufacturer is responsible for maintenance for free or
replacement.
2. We provide lifelong maintenance service for the product whatever you purchase from us or
distributors.
3. If the damage of the meter is caused by the following reasons, it is out of the maintenance
service:
A).The meter is burned caused by misconnection with high voltage power supply or soggy.
B).The meter is refitted or misused without permission.
C).The meter is damaged under the condition out of use environment.
D).The relevant damage caused by choosing the wrong type.
E).The physical damage caused by ultimate load
F).The meter is out of operation caused by improper storage and transportation (refer to
SJ/T10463-93 standard)
G).Consumable material is out of maintenance service.
Please take care of the items which with this sign.！
*Without the influence on the operation, any small change or improvement on the products by the
manufacturer will not be notified separately. Please make the object as the standard
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

Content
Ⅰ、GENERAL..............................................................................................................1
1.1 WORKING PRINCIPLE................................................................................................................. 1
1.2APPLICATION................................................................................................................................ 1
1.3 CLASSIFICATION......................................................................................................................... 2
1.4TECHNIQUE INDEX...................................................................................................................... 3
Ⅱ、INSTALLATION....................................................................................................4
2.1 INSTALLATION OF INSTRUMENT............................................................................................ 4
2.2ELECTRICAL CONNECTION....................................................................................................... 5
2.3DIAGRAM OF 4-20MA OUTPUT.................................................................................................. 6
2.4 RELAY CONTROL CONNECTION.............................................................................................. 7
2.5 CONTROL MODE.......................................................................................................................... 7
2.6INSTALLATION OF SENSOR....................................................................................................... 8
2.6.1ASSEMBLING AND REPLACEMENT.................................................................................. 8
2.6.2INSTALLATION METHOD.................................................................................................... 9
2.6.3 INSTALLATION REQUIREMENT...................................................................................... 10
Ⅲ、SETTINGS............................................................................................................10
3.1MEASUREMENT MODE............................................................................................................. 12
3.1.1NORMAL DISPLAY..............................................................................................................12
3.1.2 TRANSIENT DISPLAY........................................................................................................ 12
3.2 SETTING MODE.......................................................................................................................... 12
3.2.1 FUNCTION SELECTION..................................................................................................... 13
3.2.2 4MA SETTING...................................................................................................................... 13
3.2.3 20MA SETTING.................................................................................................................... 13
3.2.4HIGH-LIMIT ALARM SETTING.......................................................................................... 13
3.2.5 LOW-LIMIT ALARM SETTING.......................................................................................... 13
3.2.6 ALARM HYSTERSIS SETTING.......................................................................................... 14
3.2.7 TEMPERATURE SETTING.................................................................................................. 14
3.3 SENSOR CALIBRATION............................................................................................................14
3.3.1 SYSTEM CALIBRATION..................................................................................................... 14
3.3.2 BUFFER SOLUTION CALIBRATION................................................................................ 14
3.3.3 OFF-LINE CALIBRATION.................................................................................................. 15
Ⅳ、MAINTENANCE................................................................................................. 16
4.1 SENSOR MAINTENANCE......................................................................................................... 16
4.2 USAGE OF SENSORS................................................................................................................. 16
Ⅴ、TROUBLE SHOOTING.......................................................................................17
Ⅵ、COMPLETE SET................................................................................................. 17
Ⅶ、ORDER DIRECTORY......................................................................................... 18
7.1SENSOR SELECTION.................................................................................................................. 18
7.2FLOW DEVICE SELECTION....................................................................................................... 18
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

1
Ⅰ.GENERAL
pH/ORP-3500 series is a kind of popular and cost-effective online pH and ORP
controller , with plug-in pH/ORP-1220 sensor, which have good measurement
accuracy, anti-interference,easy to install and operation features.
¾White backlight LCD screen,several operations, easy for operation
¾Be compatible for six kinds of buffer solution(10.00,9.18,7.00,6.86,4.00,4.01)
which suitable for international standard.
¾Selectable temperature sensor which reduce the replacement cost.
¾Manual calibration is easy for on-site calibration.
¾EMC enhancement type could run smoothly under kinds of industry
environment.
¾（4~20）mA output support instrument/transmitter modes and satisfy all
（4~20）mA receiving unit.
¾Double relay high/low and delay control function could fulfill pH or ORP
interval control and adjustment.
¾Several power supply to be selection according to the different models.Input
AC/DC power, no polarity connection.
1.1 Working Principle
The weak voltage change is generated when H+affected the inserted sensor, the
changeable value will transmit to the instrument. After converting and calculating the
generated pH/ORP signal, the instrument will show the values on the screen.
1.2Application
This series instruments are widely used for online pH/ORP monitoring in
environment protection water treatment, pure water treatment, industrial process and
so on.
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

2
1.3 Classification
model Power
supply
frequency
（Hz）Current mode Sensor selection
pH/ORP-3500 DC 24V ------- Instrument/transmitter pH-1220B plug-in
sensor;
ORP-1220B plug-in
sensor or other
sensors;
TE-1230-14
temperature sensor
pH/ORP-3510 AC
110V 50/60 Instrument/transmitter
pH/ORP-3520 AC
220V 50/60 Instrument/transmitter
【NOTE】
1. Put the instrument in dry environment and the water-drop or moisture will
cause the damage or measurement error；
2. Pay more attention on the power supply before wiring connection.
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

3
1.4Technique index
model pH/ORP-3500series pH/ORP online transmitting controller
Measureme
nt range
pH 0.00~14.00
ORP -2000mV~2000mV
Temp. （0.0~50.0）℃（temperature compensation component: NTC10K
Resolution
pH 0.01
ORP 1mV
Temp 0.1℃
accuracy
pH 0.1 level
ORP ±5mV（electronic unit）
Temp ±0.5℃
Approximate input
impedance 3×1011Ω
Buffer solution 10.00；9.18；7.00；6.86；4.01； 4.00
Temp. compensation
range
（0~50）℃（with 25℃ as standard）
Manual and automatic temperature compensation
(4~20)mA
characteristic
s
Isolated,fully adjustable,reversible,instrument/transmitter for
selection
Loop
resistance 500Ω（Max），DC24V
accuracy ±0.1mA
Control
contact
Electrical
contacts Double relay SPST-NO, hystersis model
Loop
capacity AC220V/AC110V 2A(Max)；DC24V 2A(Max)
Power consumption ＜3W
Working
environment
temperature （0~50）℃
humidity ≤85％RH(none condensation)
Storage environment Temp.(-20-60) ℃;relative humidity:≤85%RH(none condensation
Outline dimension 48mm×96mm×80mm（H×W×D）
Hole dimension 44（H）mm×92（W）mm
installation Panel mounted,fast installation
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

4
Ⅱ、INSTALLATION
Top view Side view
2.1 Installation of instrument
pH/ORP-3500 series is adopted panel mounted type, which could be installed easily.
Please follow the steps:
1. Put the instrument into the fixed hole 44mmX92mm(HxW)
2. Then push the quick clamp along with the trench and fasten the instrument.
3. Do not let the instrument drop on the floor when dismounting the
meter.Withdraw the quick clamp and take the instrument down.
Do not put the instrument unde
r
the sun since the UV will dama
g
ethe
LED screen.
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

5
2.2Electrical Connection
The measurement cable can not be mixed with high-pressure and high frequency
cable. To avoid any interference, the cables should be 30cm distance and connect
with the ground.
Connect the power line and signal line according to the below diagrams:
pH/ORP-3500 rear terminal
pH/ORP-3510 rear terminal
pH/ORP-3520 rear terminals
Wiring connection:
0V/220V AC 220V input interface (pH/ORP-3520)
0V/110V AC 110V input interface (pH/ORP-3510)
24VA/B DC 24V input interface (pH/ORP-3500)
（Internal automatic recognition of polarity ）
Electromagnetic compatibility group protection terminal
Hi High limit alarm control terminal blocks
Low Low limit alarm control terminal blocks
T- （T+、T-） transmitting mode external feed
T+/I- Transmitting /Instrument Mode public terminal
I+ (I+、I-)Instrument mode mA output terminal
TEMP-I Connect the receiving terminal of the temp.sensor(red)
TEMP-G Connect grounding terminal of the temp. sensor (black)
NC Empty terminal
BNC connector Connect pH or ORP sensor
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

6
2.3Diagram of 4-20mA output
Instrument mode
Transmitting mode
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

7
2.4 Relay control connection
Relay ON/OFF contact component control wiring diagram
2.5 Control mode
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

8
2.6Installation of sensor
Adapter
Connection cap
Chemical
p
robe
Themiddlefixedcap
(
f
o
r
se
l
ect
i
o
n
)
Sensitive glass
membrane
（glass bulb）
2.6.1Assembling and replacement
Location key
Location slot
(3)
(2)
(1)
Screw
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

9
The location key and location slot must be occlusive exactly. No rough
installation.
2.6.2Installation method
Flow device P34A Flow device P34B
[Note] ：Recommend using the flow device with needle valve (P34)
1. Needle valve flow device (model P34A/B) is recommended when pipeline installation，
which can change probe under pressure-bearing、continue condition；
2. Round sensitive glass steep pH probe direct install in the pipeline, it will threaten the
probe when the pipeline pressure change, water hammer or siphon effect，after using
flow device, the probe and atmosphere will communicate, operational states safe and
measure stability
3. When direct install pipeline，pure water measurement value will instability because the
water is weak electrolyte，sensitive glass film（glass bubble）and salt bridge present
discontinuity open circuit，result the measure value instability
4. When direct install the pipeline to measure pure water，high concentration KCL of pH
probe and pure water form huge concentration difference，trough liquid abutment spread
into the water largely. Cause the probe lose effectiveness，pollute the pure water
meantime.，make the conductivity under probe downstream of pH probe rise hugely.
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

10
2.6.3 Installation requirement
Horizontal installation does not work Backward installation does not work
Ⅲ、SETTINGS
You could set the relative parameter after connect the instrument and sensor. Please enter into the
setting mode to check and set the relative parameters for your first use. These parameters are in
different menus.
Middle 1 1/4＂NPSC straight pipe thread
fitting Upright install or slant install no more
than 30 º
bottom 3/4＂NPT taper thread fitting；Upright install or
slant install no more than30 º
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

11
Main Menu
Please operate the meter with the keys. Under the different mode, the function will be
different.
Sign Name Function
SELECT
1. check the temp. compensation value under pH measurement
status
2. exit o
r
skip the setting paramete
r
3. select thousand, hundred ,ten and unit circularl
y
unde
r
parameter setting interface
4. long-time press the key unde
r
pH measurement status, it will
enter into pH mV calibration interface
Add key
1. set the 0-9 figure under parameter setting status
2. long-press the key unde
r
pH measurement status, it will ente
r
into the buffer calibration interface.
3. check mV value under pH measurement status.
Enter key 1. ente
r
into the main menu
2. save the paramete
r
settin
g
s
Three functions shows on the main interface: the upper icon is menu bar which guide the
operation; the left area displays the measurement unit of the current time; the value means the
measurement data or menu items.
pH/ORP-3500 working mode：
◆Measurement mode：Normal display、transient display
◆Setting mode：Parameter setting
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

12
Switch the mode as following：
3.1Measurement mode
3.1.1Normal display
The instrument will display the current pH/ORP value after powered on.
3.1.2 Transient display
Under pH measurement status, check the current temperature by pressing ,
and check the mV value by pressing It will return to normal display without
operation for five seconds
3.2 Setting mode
Some parameters have been set before ex-factory. If the test environment changes (such as
replacement of electrode, reset the alarm setting), please check the parameter which is in different
menus. The specific content and operations as following：
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

13
3.2.1 Function selection
Choose “pH” or “ORP” function selection by pressing and press for saving
the setting and enter into the next parameter setting.
3.2.2 4mA setting
When the screen displays “4mA”, press to select the digital position and
input the actual pH/ORP value by pressing , and save and enter into the next menu
setting by pressing .
3.2.3 20mA setting
When the screen displays “20mA”, press to select the digital position and
input the actual pH/ORP value by pressing , and save and enter into the next menu
setting by pressing .
3.2.4High-limit alarm setting
The screen will displays “Hi” after entering the interface of high-limit alarm
setting, press to select the digital position and input the actual value by pressing
, and save and enter into the next menu setting by pressing .
3.2.5 Low-limit alarm setting
Same operation as the high-limit alarm setting, and press after setting.
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

14
3.2.6Alarm Hysteresis setting
When “Hi”and“Lo”appear at the same time, set the pH/ORP hysteresis value
by pressing“ ” and“ ”. Save and enter into the next menu.
回差 The MIN value: pH≥0.1；ORP≥10mV！
3.2.7 Temperature setting
When“H”or“A”blinks，press “ ” to do the manual temperature compensation
（H25.0℃）or automatic temperature compensation (A25.0℃) (automatic
temperature compensation need to connect a temp. sensor NTC10K.). Then save and
return to measurement status.
NO THIS OPERATION FOR ORP MEASUREMENT!
3.3 Sensor calibration
3.3.1 System Calibration
pH/ORP sensors are electrochemical and their sensitivity decreases with
influence of time and medium. In order to get an accurate measurement, it is
suggested to often calibrate sensor’s slope. The calibration period relays on the
influence from the measured medium
1) Normal buffer solution ,10.00\9.18\7.00\6.86\4.00\4.01
2) If the medium are acid or alkali, please choose two point slope calibration, use two kind
buffer solution.
3) Before the calibration, please read the instruction carefully , and prepare the standard buffer
solution
4) The meter with directly input calibration method, please reference the calibration steps.
5) If the sensor with long time storage, please put it in the water or KCL solution for 12
hours , and then calibrate it.
3.3.2 Buffer solution calibration
1. Choose the correct buffer solution to calibrate.；
2.Press the for 3 seconds and enter into buffer solution calibration interface
under pH measurement interface, input the current temperature , save and enter
into buffer solution calibration by pressing .
3. When the “C10.0” and pH blinks，it means to enter into the buffer solution
selection; press “ ”and enter into the next calibration menu.
4. Put the clean sensor into the buffer solution for 3-5 minutes.
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

15
5.Press“ ”to save the settings and enter into the next calibration，fetch the
sensor out and clean, then put it into the suggestive buffer solution and finish the
calibration in turn.
6. Check the buffer solution and recalibrate when“ ” comes out and then
recalibrate.
Please follow the below detailed calibration process:
“ ”means skip this operation；and “ ”means enter the operation.
3.3.3 OFF-LINE CALIBRATION
When field calibration is not good to carry on ,the calibration to sensor’s slope by
using lab devices and buffer solution is recommended .Take notes of corresponding
mV value of buffer solution in room temperature.Input of this record value to off-line
calibration is called as manual input calibration.
Press “ ”for 3 seconds under pH measurement status,input the corresponding
mV value in different buffer solution, press “ ”to save and enter into the main
menu.
Clean
water
clean the
sensor
10.00
Calibration
solution
Temp. imput
10.00/9.18
solution
7.00/6.86
solution
Clean
water
clean the
sensor
4.01/4.00
solution
7.00 4.01 9.18 6.86 4.00 Measurement
main
enterface
Clean
water
clean the
sensor
Clean
water
clean the
sensor
Put sensor into selected buffer solution to
calibrate
Calib
rate
calib
rate
calib
rate cleanclean
clean
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

16
Incorrect mV value input during calibration process, the screen will display “ ”.
Press “ ” to continue the calibration, and press “ ”to enter into the next
calibration.
Ⅳ、MAINTENANCE
4.1 Sensor Maintenance.
1. To avoid long time dry store, the sensor should be kept in the protection cap
with KCl solution in 3.0mol/L.；
2. Clean the sensor and calibrate the same on the indicator regularly.；
3. In case of suspende
d
stuff attached, wash it with HCl o
r
NaOH solution in
0.01mol/L and rinse with clean water；
4. If the above methods are invali
d
to reset slope, it means that the senso
r
should be replaced.；
5. The platinum surface of ORP senso
r
should
b
e shining. In case of smudginess,
wash it with HCl or NaOH solution in 0.01mol/L and rinse with distilled
water. If the surface of platinum is polluted and formed oxidation film, the
platinum could be polished with sand paper and toothpaste, then clean it with
distilled water；
6. Place the senor into 3.5 mol/L KCl solution for 6 hours before usage;
7. Buffer solution gets different value at different temperature so please confirm
the temperature of buffer solution at calibration。
4.2 Usage of sensors
1. pH/ORP sensors are consumables .Lon
g
time stora
g
e is not su
gg
ested;
2. Sensitive
g
lass fil
m
(
g
lass
b
ubble) is forbidden to use when the medium with
hydrofluoric acid, fluorion and high-concentration sulfion.
3. pH/ORP sensors are not allowe
d
to measure an
y
or
g
anic solution which will
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]

17
damage or dissolve PC or ABS(such as carbon tetrachloride, trichloro
ethylene or tetrahydrofuran etc….)；
4. The chemical part of the senso
r
is
g
lass, please protect carefull
y
durin
g
transportation and storage.
5. Please clean the senso
r
at a re
g
ula
r
time
by
usin
g
swab an
d
neutral cleanser;
do not use the acid and corrosive solution to clean the sensor。
6. High-temp. pH glass senso
r
is recommende
d
fo
r
b
iopharmacy an
d
high-pressure autoclaved sterilization. The protection part is optional;
7. pH signal is wea
k
signal, the collecting cable shoul
d
run separately. Do not
mix the cable together.
8. Measurement cable is fo
r
special use, it’s not allowe
d
to cut o
r
len
g
thene
d
privately or replaced by other cables.；
9. Install a filte
r
b
efore senso
r
when there is molecule in the medium to protect
the pH glass bubble.
Ⅴ、TROUBLE SHOOTING
Problem Possible causes Trouble shooting
No display
when
powered on
A．Badconnectionof
power supply
B．Instrument fault
Acheck to see if there is 24Vvoltage between power
terminals 24VA and 24VB.
B．Check by professional technicians.
Unstable
display
A．Improper wire
connection of sensor
B．Air bubbles in the
pipeline
C．Unstable water
quality
D.badness connection
A．refer to the instruction manuals
B．select the proper measurement point or change the
pipeline
C．stabilizing the water quality
D．Check the connector to be connected
Big deviation
A. Senso
r
fault
B. The cable is
damaged
C. incorrect
installation
D. setting proble
m
A．Take out the sensor from the pipeline and calibrate
B．replace the senor which can not be calibrated
C．find the correct measurement point and use the flow
device
D．reset the parameter of the instrument
Difference at
transmitting
data
A. loop resistance is
too large
B. incorrect
connection mode
C. unusual powe
r
supply
D. wrong transfer
volume
A. replace the cable to reduce the loop resistance
B. check the connection ri
g
ht o
r
not
C.
p
owered
by
the standard
D. reset the transferred volume
Ⅵ、COMPLETE SET
Chemitech IT Perdana | Solution For Your Trouble | Service Laboratorium Instrument
https://chemitech.id
order via whatsapp: [phone]