ROC pH/ORP-5500 Series User manual

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pH / ORP Transmitter / Controller
pH / ORP-5500 Series
USER MANUAL

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ntroduction
Correct sensor installation and parameter setting would show great 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 meter, the installation and operation should
be performed by technicians with relevant professional knowledge
Please check the actual product with complete set after you receive the package, and contact us if
any items are missing or damaged
Warranty：
1. The meter’s quality guarantee is one year from the date of purchasing During this period,
if the meter has quality problems, the supplier is responsible for maintenance work on
free of charge basis
2. If the damage of the meter is caused by the following reasons, it is out of Guarantee:
A The meter is burned
B The meter is refitted or misused
D The relevant damage caused by improper power supply
E The cable damaged and rupture caused by improper installation and usage;
F The incorrect measurement of the sensor caused by disconnecting or connecting wires
personally;
G Any other form of misuse/mishandling
Please take care of the items which with this sign ！
Thanks for choosing pH / ORP – 5500 series pH / ORP Controller

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CONTENT
1、CONCEPTION ERROR! BOOKMARK NOT DEF NED.
1 1 WORKING PRINCIPLE 5
1 2 APPLICATION 5
1 3 CLASSIFICATION 5
1 4 TECHNIQUE INDEX 6
2、INSTALLATION 7
2 1 INSTALLATION OF INSTRUMENT 7
2 2 ELECTRICAL CONNECTION 8
2 3 DIAGRAM OF 4-20MA OUTPUT 10
2 4 RELAY CONTROL CONNECTION 11
2 5 CONTROL MODE 11
2 6 OUTLINE DIMENSION AND INSTALLATION OF SENSOR 12
2 6 1INSTALLATION METHOD OF THE SENSOR 13
2 6 2 INSTALLATION REQUIREMENT 14
3、SETTINGS 15
3 1 MEASUREMENT MODE 18
3 1 1 NORMAL DISPLAY 18
3 1 2 TRANSIENT DISPLAY 18
3 2 SETTING MODE 19
3 2 1 FUNCTION SELECTION 19
3 2 2 4MA SETTING 19
3 2 3 20MA SETTING 19
3 2 4 HIGH-LIMIT ALARM SETTING 19
3 2 5 LOW-LIMIT ALARM SETTING 19
3 2 6 ALARM HYSTERSIS SETTING 19
3 2 7 TEMPERATURE SETTING 20
3 3 SENSOR CALIBRATION 20
3 3 1 SYSTEM CALIBRATION 20
3 3 2 BUFFER SOLUTION CALIBRATION 21
3 3 3 OFF-LINE CALIBRATION 22
4 MAINTENANCE 23
4 1 SENSOR MAINTENANCE 23
4 2 USAGE OF SENSORS ERROR! BOOKMARK NOT DEF NED.
5 INSTRUMENT AND PROBE FAULT COMMON TROUBLE SHOOTING 24
6 COMPLETE SET 24
7 ORDER DIRECTORY 25
7 1 SENSOR SELECTION 25
7 2 FLOW DEVICE SELECTION 25

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1. Conception
FEATURES :
 White backlight LCD screen, several operations, easy for operation
 Compatible with six kinds of buffer solutions suitable for international standards
 Selectable temperature sensor which reduce the replacement cost；
 Manual calibration is easy for on-site calibration
 EMC enhancement type could run smoothly under various kinds of industry
environment
 （4~20）mA output supports instrument/transmitter modes and satisfies all 4~20mA
receiving units
 Double relay high/low and delay control function could fulfill pH or ORP interval
control and adjustment
pH / ORP-5500 series is an online pH and ORP Controller , with plug-in PH-1110A sensor,
which has good measurement accuracy, anti-interference, easy to install and operational
features

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1.1 Working Principle
A weak voltage change is generated when H+ affects 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
1.2 Application
This series of instruments are widely used for online pH/ORP monitoring in environment
protection water treatment, pure water treatment, industrial process and so on
1.3 Classification
Model Power
Supply
Frequency
（Hz） Current Mode Sensor Selection
pH/ORP-5520 AC 220V 50 / 60 Instrument / Transmitter
【NOTE】
1 Install the instrument in a dry environment and any water-drop or excess moisture will cause
damage or measurement error；
2 Pay attention on the power supply before wiring connection
pH-1110A

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1.4 Technical index
Controller
Measuremen
t Range
pH 0 00~14 00
ORP -2000mV~2000mV
Temp. （0 0~50 0）
℃
（temperature compensation component: NTC10K）
Resolution
pH 0 01 pH
ORP 1mV
Temp. 0 1 ºC
Accuracy
pH 0 1 pH
ORP ±5 mV（electronic unit）
Temp. ±0 5 º C
Approximate input impedance 3×1011 Ω
Buffer Recognition pH value: 10 00；9 18；7 00；6 86；4 01；4 00
Temp compensation range （0~50）ºC（with 25 ºC as standard）
Manual and automatic temperature compensation
(4~20)mA
Characteristics
Isolated, fully adjustable, reversible, instrument/transmitter for
selection
Loop
resistance 500Ω（Max），DC 24V
Accuracy ±0 1mA
Control
contact
Electrical
Contacts Double relay SPST-NO, return model
Loop capacity AC 220V/AC 110V 2A(Max)；DC 24V 2A(Max)
Power consumption ＜3W
Working
environment
Temperature (0~50) ºC
Humidity ≤85％RH (non condensing)
Storage environment Temp (-20-60)
℃
; ≤85％RH (non condensing)
Outline dimension 96mm×96mm×105mm（H×W×D）
Panel Cutout Dimension 91mm×91mm(H×W)
Installation Panel mounted, fast installation
pH / ORP-5520 Series pH / ORP Online Transmitting
Model

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2. nstallation
Side view
2.1 nstallation of nstrument
Front view
pH/ORP-5500 series is a panel mounted type instrument, which can be installed easily

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Please follow the following steps:
1 Put the instrument into the Panel Cutout 91mm X 91mm (H x W)
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 out carefully
Do not place the LCD display screen directly under the sun for the UV could damage
the screen
2.2 Electrical Connection
The measurement cable cannot be mixed with high-tension and high frequency cables To avoid
any interference, the cables should be at a distance of 30cm from high tension cables and
connected with the ground
Connect the power line and signal line according to the below Diagrams：

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The actual power supply must be the same
with marked power supply !
Wiring Connection：
NPUT Connect pH/ORP measuring sensor（transparent line）
REF Connect pH/ORP reference sensor（shielded line）
CELL-T Connect the receiving terminal of the Temp sensor(red)
GND Connect grounding terminal of the temp sensor (black)
+/ - Instrument mode (powered by instrument)
T+/T- Transmitting model（external feed）
Hi High limit alarm control terminal blocks
Low Low limit alarm control terminal blocks
0V/220V AC 220V input interface(pH/ORP-5520)
NC Empty terminal
EARTH Electromagnetic compatibility group protection terminal

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2.3 Diagram of 4-20mA output
nstrument Mode
Transmitting Mode

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2.4 Relay Control Connection
Relay ON/OFF contact component control wiring diagram
2.5 Control Mode

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2.6 Outline dimension and installation of the sensor
pH/ORP one-piece sensor pH/ORP glass sensor pH/ORP plug-in sensor

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2.6.1 nstallation Method of the Sensor
Flow Device P34A Flow Device P34B
P16 Submersible Installation
Inlet
Outlet
pH sensor and temp sensor by using P33

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[ Note] : Recommend using the flow device with needle valve (P34)
1. Needle valve flow device (model P34A/B) is recommended when pipeline doing
installation
2 Round sensitive glass type pH probe direct installation in the pipeline, will expose the
probe to pressure change, water hammer or siphon effect Using the flow device, the
probe and atmosphere will be in equilibrium and ensure operational safety and stability
in measurement
3 When directly installed in the pipeline, pure water measurement value will be unstable
because the water is a weak electrolyte
2.6.2 nstallation requirement
Horizontal installation does not work Backward installation does not work
Middle 1 1/4＂NPSC straight pipe thread
fitting Upright install or slant install no more
than 30 º
bottom 3/4
slant install no more than30 º
bottom 3/4
slant install no more than30 º
Bottom 3/4＂NPT taper thread fitting；Upright install or
slant install no more than30 º

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3. Settings
You could set the relative parameter after connecting 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
Main Menu
Please operate the meter with the keys Under different modes, the function will be different ：
Sign Name Function
ESC
1 Check the temperature compensation value under pH
measurement status
2 Exit or skip the setting parameter
Select
1 Select thousand, hundred ,ten and unit circularly under
parameter setting interface
2 Long press the key under pH measurement status, it will
enter into pH mV calibration interface

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Add key
1 Set the 0-9 figure under parameter setting status
2 long-press the key under pH measurement status, it will
enter into the buffer calibration interface
3 Check mV value under pH measurement status
Enter key 1 Enter into the main function menu
2 Save the parameter settings
Three functions are shown on the main interface: the upper area is menu bar which guides the
operation; the right area displays the measurement unit of the current time; the middle figures
shows the measurement data or menu items

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Switch the Mode as Following：
After
setting
parameter
or no
operation
for 90
seconds
Press under pH measurement status
No operation for 5 seconds under transient status
Press under pH measurement status
Off
-
line Calibration
check temp
Check mV value
Meas Mode
t ransient display
Long-press under pH measurement status
Long-press under pH measurement status
Buffer solution
Buffer solution calibration
No this function under ORP measurement status
Setting mode
User menu
***
***
***
Meas Mode
Normal Display
T
his function
is not
available in ORP
measurement status
pH / ORP-5500
◆ Measurement Mode：Normal Display、Transient Display
◆ Setting Mode：Parameter Setting

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3.1 Measurement Mode
3.1.1 Normal display
The instrument will display the current pH/ORP value after powered on
3.1.2 Transient display
Check the current temp value by pressing under pH measurement status and check current
mV value by pressing The instrument will return to normal display without any operation in
five seconds
3 2 1
3 2 2
3 2 3
3 2 4
3 2 5
3 2 6
3 2 7
pH
2.88
4mA setting
Low alarm setting
20mA setting
High alarm setting
Hystersis setting
“4 mA” blinks
“Hi” “Lo”
pH or ORP display
“20 mA” blinks
Temp Comp setting
“Lo” blinks
“H” or “A”
“Hi” blinks
Function Selection

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3.2 Setting Mode
Some parameters have been set before dispatch If the test environment changes (such as
replacement of electrode, reset of alarm setting etc), please check the parameter which is in
different menus The specific content and operations as follows:
3.2.1 Function selection
Choose “pH” or “ORP” function selection by pressing press for saving the setting and
enter into the next parameter setting
3.2.2 4 mA setting
When the screen displays “4mA”, press to select the position of input figures Then press
to input the actual pH/ORP value, press to save the settings and enter into the next menu
setting
3.2.3 20 mA setting
When the screen displays “20mA”,press to select the position of input figures Then press
to input the actual pH/ORP value, press to save the settings and enter into the next menu
setting
3.2.4 High-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
3.2.6 Alarm Hystersis setting
When “Hi” and “Lo” appear at the same time, set the pH/ORP hystersis value by pressing“
” and“ ”, and press save and enter into the next menu
回差 The Min Value: Ph≥0.1；Orp≥10mv
！

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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 press save and return to measurement status
This operation is not available for ORP measurement!
3.3 Sensor Calibration
3.3.1 System Calibration
pH / ORP sensors are electrochemical Sensors 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 recommended calibration period would be weekly, but sometimes could be
more often
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 will directly input calibration method, please refer the calibration steps ；
5 If the sensor is stored for a long time, please put the sensor in the water or KCL solution for
12 hours, and then calibrate it