EYC DPME02 User manual

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Note：Please read the manual carefully before use.
Thank you for purchasing our products. In order to continuously improve the quality of
the controller and improve its functions, our company reserves the right to modify the
content and icon display at any time. The actual display may be different from the operation
manual, so the actual situation shall be subject to the machine. When using the controller,
please follow the function and installation method described in the operation manual. Our
company will not be responsible for any indirect or indirect loss or damage caused by
improper use of the product by any person or entity. If you have any problems or find any
omissions or errors in the operation manual, please contact our sales.
Safety and matters needing attention
1.Please read this manual carefully before installation to avoid safety problems and
instrument damage caused by wrong records.
2.Please avoid high temperature, high humidity and corrosive environment to install the
controller, and avoid direct sunlight exposure.
3.Special wires shall be used for the transmission line of electrode signal. It is suggested to
use the wires provided by our company instead of general wires.
4.When using the power supply, it should avoid interference from the power supply,
especially when using the three-phase power supply, the ground wire should be used
correctly(If there is a power surge phenomenon occurs, the controller's power supply and
control devices such as：dosing machine, mixer, etc. can be separated, that is, the
transmitter uses a separate power supply.)
5.The controller output contacts carry alarm and control functions. For safety and
protection reasons, please be sure to connect external relays with sufficient current
value to protect the safety of the instrument.

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Contents
I. Overview ........................................................................................................... 4
II. Combination and installation ............................................................................. 5
2.1 Main engine fixed ..................................................................................... 5
2.2 Panel mounting reference drawing ........................................................... 5
2.3 Electrode mounting.................................................................................... 6
III. Electrode and electrical wiring .......................................................................... 9
3.1 Back panel wiring diagram ....................................................................... 9
3.2 Back contact function diagram ................................................................. 10
3.3 Backplane terminal contact description .................................................... 10
IV. Panel introduction ............................................................................................. 12
4.1 Panel introduction .................................................................................... 12
4.2 Key description ......................................................................................... 12
4.3 Display description ................................................................................... 13
V. Menu introduction ............................................................................................. 14
5.1 System setting .......................................................................................... 16
5.2 Sensor setting .......................................................................................... 17
5.3 Output setting ........................................................................................... 20
5.4 Factory reset ............................................................................................ 23
VI. Calibration ........................................................................................................ 24
VII. Default factory setting ....................................................................................... 25

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Overview
eYc DPME02 conductivity / resistance controller, this meter has a high degree of
intelligence and flexibility. It can measure conductivity / resistance value and temperature
at the same time. It is widely used in urban sewage treatment plants, water supply and
other industries and can continuously measured the conductivity / resistance value of
solution.
Basic function
Initial password：0000
1. AC 220 V and DC 24 V double power supply
2. Enhance security protection IP65 IP rating
3. Language diversity. Factory standard is Chinese interface and can switch English
interface
4. Temperature compensation diversity. Pt1000, NTC 10 K and manual temperature
compensation are available in three temperature compensation modes
5. Two 4 ... 20 mA outputs, corresponding to Conductivity / Resistance value and
temperature(or one set of 4 ... 20 mA & one set of RS-485)
6. Using isolation technology, strong anti-interference ability
7. The high and low points of the two sets of relays can be switched freely, and the
hysteresis can be adjusted freely to avoid relays on and off frequently
8. Password management function is to prevent the misoperation by non-professional
personnel
9. Menu prompt function, greatly facilitates the user's operation
Instrument technical parameters
1. Measuring range：0.055 μs /cm ... 200 ms/cm
2. Accuracy：±1%F.S. temperature：Manual or automatic(Pt1000 or NTC 10 K)
3. Resolution：0.01 μs/cm
4. Temperature compensation：Manual or Auto(Pt1000 / NTC 10 K)
5. Signal output：4 ... 20 mA isolation protection output, independent corresponding PH /
ORP or temperature, maximum load is 500 Ω
6. Alarm output：Two groups can randomly correspond to high and low point alarm(3A /
AC 250 V), normally open contact relay
7. Power supply：AC 100 ... 240 V and DC 24 V.
8. Power consumption：≦5W
9. Environmental condition：(1)Temperature：0 ... 60°C (2)Humidity≦85%RH

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10. Dimensions：H96xW96xD132 mm
11. Hole size：H92.5xW92.5 mm
Combination and installation
2.1 Main engine fixed
Note：For panel installation, please reserve 92.5x92.5 mm square holes on the panel of
the distribution box.
The transmitter is placed directly from the panel of the distribution box.
Put the holder attached to the transmitter from the rear and snap it into the fixing groove.
2.2 Panel mounting reference drawing
112mm
92.5mm
92.5mm
87mm
87mm
挖孔尺寸 固定器
柜装安装方式，使用盘面固定器固定 配电箱方孔间距
Digging size
Fixator
Cabinet mounting method
Fixed with a dish holder
Distribution box square
hole spacing

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2.3 Electrode mounting
2.3.1 Electrode shape and installation form
2.3.2 Common installation methods
Installation of sensors is a very careful work, please install sensors must carefully
select the installation site, deliberate installation methods, so as to avoid the
measurement data distortion.
(1) The electrode joint in figure A is too long, and the extension part is too short. The

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dead cavity is easy to be formed in the sensor, resulting in measurement error. It
should be installed according to figure B(go deep into the water direction=FLOW)
A Wrong installation B correctly installed
(2) The installation mode of A will lead to the formation of the air cavity in the
conductivity cell, resulting in measurement errors and instability, and should be
installed as shown in figure B.
A Wrong installation B The small round hole of the
conductivity cell is located in
the water outlet window.
(3) Other common wrong installation methods：

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The measurement error or instability can be caused by the flow cannot guarantee the
full pipe or high gas accumulation.
2.3.3 Installation precautions and maintenance
(1) The flow cell should be installed in the pipeline where the flow rate is stable and it is
not easy to produce bubbles. It can be installed in the way of side flow, so as to
avoid inaccurate measurement.
(2) The concentric tubular electrode paperback, oblique or vertical installation should
be installed in the direction of FLOW and deep into the flowing water body；other
structural shape electrodes prevent the dissipation pressure due to turbulence in the
measurement room when electrode side direction installation and cause
measurement data disorder.
(3) The measurement signal is weak signal acquisition, the cable must be independent
of the line. It is prohibited to connect with power line and control line in the same
group of cable connectors or terminal boards and prohibited to wear pipe and tie
with power line and control line, avoid interference with measurement or damage,
breakdown instrument measurementunit.
(4) The cable of the electrode is standard length and special cable before leave the
factory. When the measuring cable needs to be lengthened, please make an
agreement with the manufacturer before supply.
(5) Please keep the electrode measurement part clean when installed. Don't touch the
surface directly with hands or dirty objects. After contact with greasy dirt, grease and
glue, the accurate value can’t be measured for a longtime.
(6) The conductivity cell is a precise measuring component. It can’t be decomposed
and change the shape and size of the electrode. It can’t be cleaned, soaked and
mechanically scraped by strong acid or alkali. These operations will lead to the
change of electrode constant and affect the measurement accuracy of the system.
(7) The measuring cable is the special cable, and the other specifications of cable can’t
be changed at will. All the incorrect change and change without permission will
result in the error of measurement.
(8) The instrument is made of precision integrated circuits and electronic components.
It should not be installed in direct sunlight. It should be placed in a dry environment
or in the control box to avoid leakage or measurement errors caused by water
droplets sputtering or moisture.
(9) In order to ensure the safe operation of the installation, connect the power after the

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installation has been checked correctly.
Electrode and electrical wiring
3.1 Back panel wiring diagram
01- REL1
02-REL1
03-REL2
04- REL2
05-+24V
06-GND
07-NC
08- N
09-NC
10- L
S/N:0149316250013
Cond1-11
NC -12
T/P-
18
T/P-
17
+-
16
--
15
-14
-13
NC
Cond2
T/NTC
T/NTC
+ -20
- -21
+ -22
- -23
NC-24
D O
4-20ma
T
4-20ma
RS485
B- A+
GND
NC -
19
RS-485
DO
4 ... 20 mA
T
4 ... 20 mA

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3.2 Back contact function diagram
Cond/Res
TEMP
AC INPUT
POWER DC INPUT POWER
Relay2Relay1
Cond/res
4~20mA
TEMP
4~20mA
Cond
Cond
SG
T/P -
+
-
+
POWER
3.3 Backplane terminal contact description
01 REL1：First alarm control, external relay
02 REL1：First alarm control, external relay
03 REL2：Second alarm control, external relay
04 REL3：Second alarm control, external relay
05 DC：DC+24 V output
06 GND DC：DC-24 V output
07 NC：NC
08 AC：AC power supply 220 V(N)
09 NC：NC
10 AC：AC power supply 220 V(L)
11 Cond1：Conductivity electrode blue wire
12 NC：NC
01- REL1
02-REL1
03-REL2
04- REL2
05-+24V
06-GND
07-NC
08- N
09-NC
10- L
S/N:0149316250013
Cond1-11
NC -12
T/P-
18
T/P-
17
+-
16
--
15
-14
-13
NC
Cond2
T/NTC
T/NTC
+ -20
- -21
+ -22
- -23
NC-24
DO
4-20ma
T
4-20ma
A+
GNDB-
RS485
NC -
19
Cond / Res
4 ... 20
TEMP
4 ... 20
Cond / Res
RS-485
DO
4 ... 20 mA
T
4 ... 20 mA

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13 NC：NC
14 Cond2：Conductivity electrode white wire
15 NC：NC
16 T/NTC：NTC 10 K temperature resistance interface1
17 T/NTC：NTC 10 K temperature resistance interface 2
18 T/P：Pt1000 temperature resistance interface1
19 T/P：Pt1000 temperature resistance interface2
20 Cond-ma(+)：Conductivity current output positive end
21 Cond-ma(-)：Conductivity current output negative end
22 T-ma(+)：Temperature current output positive end / RS-485 A connector
23 T-ma(-)：Temperature current output negative end
24 NC：NC / RS-485 B connector
Note：This instrument supports two groups of 4 ... 20 mA or one group of 4 ... 20
mA and one group of RS-485
AC：AC 100 ... 240 V+10% 50 / 60 hz；DC：12 ... 24 V；Power：5 W；
Relay：Withstand voltage AC 240 V, Maximum current 0.5 A；
Output current：500 Ω maximum resistance
08 —N 05 —+24 V
10 —L 06 —GND
01 —REL1 17 —T / P Red line(Temperature)
02 —REL1 16 —T / P Yellow line(Temperature)
11 —Cond1 Blue line
Control alarm wring 14 —Cond2 White line
Sensor(Electrode) wiring
20
21
20
21 RS-485 wiring(optional)
Current output wring
AC 220 V Input
DC 24 V Input
Alarm device
AC 220 V
Power Supply
Cond current output
RS-485 output
Temperature current output
22 —A+
22 —GND
24 —B-

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Panel introduction
4.1 Panel introduction
1413
12.00
测量界面
2000-01-01 09:00 AM
us/cm
8.00
电导率 25
R2-L
R1-H
Enter
ESC
R2
R1
4.2 Key description
To prevent improper operation by non-users, enable password protection when
entering parameter settings and corrections. Each function description is as follows：
：Trigger the setting interface in the measurement mode, return to the previous
menu under the setting interface.
：Switching and numerical adjustment of menus under the setting interface.
：Switching and numerical adjustment of menus under the setting interface.
：View historical alarm information in measurement mode, enter the next level
menu under the setting interface, and the shortcut key of the alarm information
interface.
Mcasuring
Conductiviry

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Enter：View the basic parameters in measurement mode, and the setting interface is
used to enter the next level menu, the shortcut key of the system information
interface.
4.3 Display description
In the display mode of system measurement, it will be shown as follows：
1413
12.00
测量界面
2000-01-01 12:00 AM
us/cm
8.00
电导率 25.0
R2-L
R1-H
界面信息
电导率输出电流的
数据显示
温度电流输出的数
据显示
测量单位
继电器的动作信息
温度模式和实时数
据
电极类型
时钟的日期显
示实时时间显示
电导率测量的实时数
据
Indicator light description：
R1：Action indicator of relay 1, the high displays the red light, the low displays the green
light.
R2：Action indicator of relay 2, the high displays the red light, the low displays the green
light.
The figure above shows the display interface of system information and alarm
information
respectively.
System information：All setting parameters of the meter are displayed in the system
information. Press Enter to enter the system information interface.
Alarm information：Up to 60 relay alarm messages can be stored. Press the button to
enter the alarm information interface.
Conductivity /
Resistance value
Conductivity
Measuring
Conductivity / Resistance
output current
Temp and current
output data
Interface
information
Electrode
type
Date
Time
Temp
Relay action
Units of
measurement
System Information
Alarm Information

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Menu introduction
This controller is divided into four first-level menus according to the function, and
each level menu includes two or even two sub-menus. Each menu is numbered for easy
viewing and setting of meter parameters. Moreover, the secondary menu will display the
setting parameters of the lower menu instrument according to the function at the upper
right of the screen, and the user can know the instrument parameters without entering
the lower menu.
The main menu includes four first-level menus：
1. System setting
The system setting parameters of the instrument include language, password, date,
backlight, etc.
2. Sensor setting
Includes display mode, calibration, digital filtering, temperature mode, temperature
regulation, and compensation.
3. Output setting
Including relay 1, relay 2 and two 4 ... 20 mA parameter settings.
4. Factory reset
Including setting recovery and alarm information recovery.
Menu prompt function：
Enter the secondary menu and the parameter settings for the next menu will be
displayed at the top right of the screen.
For example, enter the backlight of the system setup menu, the backlight parameter
is set to 30 seconds.

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5.1 System setting
Menu 1.1 Language
This instrument supports Chinese and English two languages, two languages can
switch freely.
For example：select simplified Chinese and press Enter key to confirm, the whole
display interface of the instrument will be changed into simplified Chinese.
Note：In order to prevent the user from misoperation, after the customer selects
the parameter and presses the Enter key, there will be four prompts “ESC”, “OK”,
“NO” and “ENT” at the bottom of the screen, corresponding to the four buttons of
the meter. The user needs to reconfirm whether the parameter is correctly
selected. If yes, press the button that is “OK”, otherwise press is “NO”.
Menu 1.2 Password
The default password of this instrument is 0000. You can change the password
according to your own needs. After changing the password, the user will enter the new
password after entering the setup menu next time.
Menu1.3 Date
Menu 1.3.1 Date format
The meter supports the selection of three date formats, and you can select the
appropriate date format according to your needs.

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Menu 1.3.2 Date setting
Enter the date setting menu to set the year, month, day, hour, minute, and so on. After
successful setting, the system time of the meter will automatically change to the set
time.
Menu 1.4 Backlight
This instrument supports four kinds of backlight time, the user can set the corresponding
backlight time according to the demand. The screen willdarken when the meter reaches
backlight time.
5.2 Sensor setting
Menu 2.1 Display mode
This instrument supports 6 display modes, each display mode represents different
measurement accuracy and measurement unit selection.
Remarks：
2000 μs/cm：The measuring range is 0 ... 2000 μs/cm, and the unit is μs/cm.
200.0 μs/cm：The measuring range is 0 ... 200 μs/cm, the unit is μs/cm.
20.00 μs/cm：The measuring range is 0 ... 20.00 μs/cm, the unit is μs/cm.

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20.00 ms/cm：The measuring range is 0 ... 20.00 ms/cm, the unit is ms/cm.
200.0 ms/cm：The measuring range is 0 ... 200.0 ms/cm, the unit is ms/cm.
20.00 mΩ/cm：The measuring range is 0 ... 20.00 mΩ/cm, the unit is mΩ/cm.
Menu 2.2 Coefficient settings
This controller chooses the suitable electrode coefficient according to the measuring
range of water sample. The electrode coefficient is determined by the manufacturer and
can be fine-tuned to achieve the purpose of correction.
Note：The electrode coefficient of conductivity and the corresponding
measuring range are as follows：
Coefficient ＝0.01 →0.05 ... 200.0 μs/cm
Coefficient ＝0.1 →0.1 ... 2000 μs/cm
Coefficient ＝1.0 →1.0 ... 20.00 ms/cm
Coefficient ＝10.0 →10 ... 200 ms/cm
The user must determine the electrode coefficient before adjusting the coefficient, and
then adjust the coefficient within the appropriate adjustment range to achieve the
purpose of correction.
Menu 2.3 Digital filtering
The measured value of the meter is filtered by means of averaging, and three digital
filtering methods are supported.
Low point：average every 5 seconds Midpoint：average every 10 seconds High point：
average every 20 seconds
Note：The rate of change of the low point is higher than the rate of change of the
high point.
Menu 2.4 Temperature mode

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The meter supports two types of temperature compensation, Pt1000 and NTC 10 K. It
can freely set two temperature display modes：Celsius and Fahrenheit.
Note：
2.4.1 PTC°C：Pt1000 temperature probe, Celsius display mode.
2.4.2 NTC°C：NTC 10 K temperature probe, Celsius display mode.
2.4.3 MTC°C：Manual mode, Celsius display mode.
2.4.4 PTF°F：Pt1000 temperature probe, Fahrenheit display mode.
2.4.5 PTF°F：NTC 10 K temperature probe, Fahrenheit display mode.
2.4.6 MTF°F：Manual mode, Fahrenheit display mode.
Menu 2.5 Temperature settings
The temperature adjustment is divided into two parts, the upper part is the temperature
adjustment value, and the lower part is the adjusted temperature display value. Press
Enter key, the temperature display of the meter will be the adjusted value.
Menu 2.6 Compensation
Compensation includes three submenus
2.6.1 Temperature compensation(PH)
You can freely set the temperature compensation parameter according to the actual
situation. After pressing the Enter key to confirm, the measured value will change
according to the temperature compensation parameter.

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Note：
The temperature compensation reference temperature of the instrument is fixed
at 25°C, and the calculation formula is：
Ct ＝ C25 { 1 + α(T-25) }
C25：Is DO value at 25°C α：Is Temp. compensation coefficient
T：Is Temp. of the solution to be tested Ct：Is Temp. of T°C
5.3 Output setting
The output settings mainly include relay 1, relay 2 and two 4 ... 20 mA settings, of
which two 4 ... 20 mA correspond to the measured values of temperature. The following
takes the relay 1 and 4 ... 20 mA of dissolved oxygen as an example.
Menu 3.1 Relay 1
Menu 3.1.1 Relay 1 mode
The relay is divided into three modes：off, high and low. Users can set the
corresponding relay mode according to their needs, press Enter to confirm.
Menu 3.1.2 Relay 1 trigger value
The user can freely set the trigger value within the range allowed by the meter and
press Enter to confirm.

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Menu 3.1.3 Relay 1 hysteresis value
The user can freely set the hysteresis value within the range allowed by the meter
and press Enter to confirm.
Note：
Greater than(or less than) the alarm trigger value is pulled in. Below(or greater
than) the hysteresis value is released. The relay action diagram is as follows：
迟
滞
值
高点触
发值
断开吸合 吸合断开
Menu 3.2 Relay 2
The setting of relay 2 is the same as the setting principle of relay 1, please refer to
the setting of relay 1.
Menu 3.3 Electric current
This menu is divided into four sub-menus：
3.3.1 Electric current 1 ... 4 mA setting
3.3.2 Electric current 1 ... 20 mA setting
3.3.3 Electric current 1 ... 4 mA correction
High point
trigger
value
Hysteresis
value
Disconnect
Suction
Disconnect
Suction
Low point
trigger
value
Hysteresis
value
Disconnect
Disconnect
Suction
Suction