DONGRUN FDO-99E User manual

FDO-99E Fluorescence Method
Dissolved Oxygen Analyzer
PRODUCT MANUAL
SHANDONG DONGRUN INSTRUMENT SCIENCE & TECHNOLOGY CO., LTD.

CATALOG
1. SECURITY NOTICE................................................................................................................................1
2. PRODUCT OUTLINE .............................................................................................................................2
3. PRODUCT FEATURES............................................................................................................................3
4. TECHNICAL PARAMETERS ....................................................................................................................3
4.1 SENSOR PERFORMANCE ....................................................................................................................3
4.2 TRANSMITTER PERFORMANCE ..........................................................................................................4
5. PCKING LIST ........................................................................................................................................5
6. INSTALLATION & WIRING.....................................................................................................................6
6.1 SENSOR INSTALLATION ......................................................................................................................6
6.2 TRANSMITTER INSTALLATION ............................................................................................................8
6.2.1 PANEL MOUNTED TYPE ...................................................................................................................... 8
6.2.2 PIPING MOUNTED TYPE ..................................................................................................................... 9
6.2.3 PLATE MOUNTED TYPE..................................................................................................................... 11
6.3 WIRING........................................................................................................................................... 12
7. PANEL INSTRODUCTION .................................................................................................................... 17
8. MENU OPERATION INSTRUCTION ...................................................................................................... 18
8.1 DISPLAY INTERFACE INTRODUCTION ................................................................................................ 18
8.2 PARAMETER SETTING OPERATION ................................................................................................... 19
8.2.1 MEASUREMENT SETUP................................................................................................... 21
8.2.2 OUTPUT SETUP ................................................................................................................................. 22
8.2.2.1 ALARM SETUP .......................................................................................................................... 22
8.2.2.2 ELECTIRC CURRENT SETUP ...................................................................................... 23

8.2.2.3 COMMUNICATION SETUP ....................................................................................... 23
8.2.3 SYSTEM SETUP ................................................................................................................................. 24
8.2.4 SYSTEM MAINTENANCE................................................................................................ 24
8.2.4.1CALIBRATION........................................................................................................ 25
8.2.4.2CLEANING SETUP................................................................................................... 25
8.2.4.3RESET SETUP ........................................................................................................ 26
8.2.4.4CONDITION SETUP................................................................................................. 26
8.2.4.5PARAMENT RESTORE.............................................................................................. 26
8.2.5 QUERY ....................................................................................................................27
9. INSTRUMENT MAINTENANCE............................................................................................................ 27
9.1 DAILY MAINTENANCE ...................................................................................................................... 27
9.2 SENSOR CLEANING .......................................................................................................................... 28
9.3 TRANSMITTER CLEANING ................................................................................................................ 28
9.4 FLUORESCENCE FILM REPLACEMENT................................................................................................ 28
10. COMMON TROUBLESHOOTING........................................................................................................ 29
11. RELATION TABLE OF OXYGEN DISSOVLED VALUE AND WATER TEMPERATURE.................................... 30
12. QUALITY INSURANCE.................................................................................................... 31

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - １- www.cndongrun.com
1、Security Notice
Welcome to use FDO-99E Fluorescence Method Dissolved Oxygen Analyzer,
manufactured by Shandong Dongrun Instrument Science and Technology Co., Ltd!
Before instrument installation, please make sure to read this manual carefully, which not only guides you to
the correct use of instrument, more important is to avoid unsafe issues caused by improper use of
instrument. Our company will not bear any responsibility due to any instrument damage or failure caused
by improper use.
To ensure safety, the electrical connection should be done by the professionals. This instrument adopts AC
220V or DC 24V power supply, please do not open the instrument shell or junction box under the condition
of power connection, in order to avoid electric shock or instrument damage. Before turning on the
instrument and connecting to power, please be sure to confirm the power supply is properly connected to
the specified location on the meter socket. Incorrect connection may result in permanent damage of
instrument.
The degree of instrument lightning protection mainly depends on the situation of implementation of the
related instrument system lightning protection project. The instrument itself is NOT anti-lightning.

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - ２- www.cndongrun.com
2、Product Outline
Fluorescence Method Dissolved Oxygen
Analyzer is based on the “quenching”
principle of certain substances to reactive
fluorescent in the physics, which detects the
concentration of dissolved oxygen or partial
pressure of oxygen in the water. Figure on
the right is the sensor measuring principle
diagram: The front-end measuring sensor
consists of two LEDs (emitting red-ray and
blue-ray separately), photoelectric detector
and the fluorescent cap.
The fluorescent material that in the front-end of fluorescent cap is a special kind of ruthenium metal
compounds. Fluorescent substances are coated below the polyester foil that allows gas molecules to pass.
The surface of polyester foil is coated with a layer of black ray insulation materials, in order to avoid
interference from ray of the sun or other rays in the water. When sensor works, the fluorescent material
was stimulated to produce red-ray when the modulated blue-ray is reaching. Due to the "quenching" effect
of oxygen molecules, the intensity of excitated fluorescence is related to time and oxygen concentration.
The higher oxygen concentration, the lower the intensity of excited fluorescence, and the shorter the time.
The stimulate red ray is detected by the photoelectric sensor, that compares with the reference light signal,
then it calculates the phase difference, and compares with internal calibration value, then oxygen
concentration is calculated, through the linearization and temperature compensation, outputs of the oxygen
density in the end.
Widely used in industrial and municipal sewage treatment plant: regulating reservoir, aeration tank,
aerobic/anaerobic digestion pool water monitoring, and water environment detection, such as river, lake,
sea, fishery, etc.

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - ３- www.cndongrun.com
3、Product Features
1) No need to replace solid electrode or film / electrolyte
2) No flow speed/ agitation requirement
3) Higher resolution and measurement accuracy
4) Stable measurement, no drift
5) It will not be poisoning by sulfide.
6) The service life of sensor fluorescence cap is above 1 year.
7) It is not affected by the thermal disturbance.
8) It is not affected by cross interference of the following substances: H2S, pH, CO2, NH3, SO42-,
CL-, CL2 etc.
9) Basic maintenance-free
10) 128 * 64 dot matrix LCD screen can display measurement value, signal output, time,
temperature etc. Yellow backlighting design, is beautiful and practical.
11) Protection degree IP65, suitable for outdoor use
12) 4~20mA isolation current output, optional field bus interface
13) Can provide a cleaning relay and two programmable control relays
14) Ensure internal memory chips set parameters after power-off, and recording data is not lost in
ten years.
4、Technical Parameters
4.1 Sensor Performance
1. Measurement range: DO: 0-20 mg / l or 0-20ppm, Air saturation: 0-120%
2. Resolution: 0.01mg / l
3. Measurement Accuracy: ±0.2mg/l or 1% F.S
4. Response time: T90<60s
5. Temperature sensor: Operating range: 0 –50℃;

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - ４- www.cndongrun.com
Resolution: 0.1℃, Accuracy: ±0.5℃, Response time:<10s
6. Operating temperature: 0 - 50℃
7. Storage temperature: -40 - 80℃
8. Installation depth: 0 - 10 m
9. Calibration: no need to calibrate, as factory has made three-point calibration.
10. Chemical adaptability: safe for using methanol and ethanol, avoid other organic solvents.
11. Measurement foil: Polyester embedded ruthenium metal fluorescence powder
12. Light insulation coating: Teflon
13. Foil service life: 5 years (10 seconds measured interval)
14. Sensor shell: 316L stainless steel
15. Size: Φ41×140mm
16. Weight: 600g
17. Power supply:DC5V or DC9V, power supplied by transmitter
18. Sensor cable: standard 10 meters
4.2 Transmitter Performance
1) Power supply: 85V AC ~ 265V AC or 24V DC±10%;
2) Power consumption: 6W (starting current 220VAC: 300mA (10 ms))
3) Operating temperature range: - 20℃~ 60℃
4) Two lines of analog signal output: 4 ~ 20 mA. DC
5) Output load resistance: 0 ~ 500 Ω
6) Data record capacity: 15000

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - ５- www.cndongrun.com
7) Event record capacity: 4800
8) Output relay: 2, clean relay: 1, contact capacity: 5A/30VDC or 5A/250VAC
9) Mechanical size:
Dimension: 98 * 98 * 130 mm
Panel installation: insert part width * height is 92 * 92 mm, length: 115 mm
Panel opening: 93 * 93 mm
5、Packing List
Packing list refers to Table 1.
Table 1 Packing List
Name
Quality
Transmitter
1
Install card buckle
2
Sensor
1
Product manual
1
Product Certificate
1

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - ６- www.cndongrun.com
6、Installation & Wiring
6.1 Sensor Installation
The distance between fluorescence dissolved oxygen sensors installed and the surface of water, is 0.2-1m
according to the actual situation. The fluorescent cap cannot contact with the sludge or hard objects. There
should be no light shining on the lower part of the fluorescent cap directly.
There are a lot of floating material, or flowing hard particles in the water, which may contact to the sensor,
so actions should be taken in order to avoid damage of sensors or inaccurate measurements.

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - ７- www.cndongrun.com
Instrument box
and bracket
Guide rod
and bracket
Sensor
Traction rope
Floater
Sensor
Sidewall mounting bracket
M10 nut
The elastic gasket
FIG. 1 Sensor Installation Diagram

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - ８- http:// www.cndongrun.com
6.2 Transmitter Installation
6.2.1 Panel-mounted Type
Need to open a 93 mm x 93 mm square hole
on the installation panel, then fix the transmitter
on the panel by install card buckle.
FIG. 2 Panel Mounted Diagram

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - ９- http:// www.cndongrun.com
6.2.2 Piping Mounted Type
Transmitter is installed by location A on the back of the transmitter.
FIG.3 Back Diagram of Transmitter

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - １０ - http:// www.cndongrun.com
FIG. 4 Piping Mounted Diagram

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - １１ - http:// www.cndongrun.com
6.2.3 Plate Mounted Type
Turn the four M4 screws through the mounting plate into
Hole location B, and then install the mounting plate.
FIG.5 Backplate Mounting Diagram

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - １２ - http:// www.cndongrun.com
6.3 Wiring
There is a PG9 thread hole below the instrument, you can access electrode lead(outer diameter φ4～φ6) to
the meter; two M20X1.5 thread holes, you can access signal line(outer diameter φ6～φ10) and power cord
to the meter. To ensure the instrument has good protection grade, please tighten the lock nut of the thread
hole after through the lead wire. For the unused thread holes, please insert the waterproof rubber plug
provided with the goods through the thread holes, then tighten the lock nut. To do so can prevent external
water vapor into the instrument, and ensure the instrument can be used reliably.
Electrical Connection Attention
In order to ensure safety, the electrical connection should be done by the professionals. The power
supply should be kept between 220±20VAC (±2.4V.DC when power supply is 24V.DC). To ensure the safety
of the instrument and the accuracy of the measurement, the ground wire must be connected to the earth
reliably.
Static may damage the internal electronic components, resulting in performance degradation or damage of
the instrument. The following measures are recommended to prevent the damage of sensor caused by
static:
Release static from your body first before you touch any electronic components (e.g. printed circuit board &
the components on it). You can touch the grounded metal surface of the instrument shell or a metal conduit
or pipe:
1) In order to reduce the buildup of the static, excessive movement need to avoid. Please put the
static-sensitive parts into an antistatic container or package when transports.
2) In order to release static from user’s body and keep releasing , please wear a toggle-joint electrostatic
catcher connected with ground wire.
3) If possible, please use antistatic ground pad or workbench pad.

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - １３ - http:// www.cndongrun.com
FIG.6 Transmitter Back Panel Wire Map Diagram (Power supply DC24V)

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - １４ - http:// www.cndongrun.com
Table 2 Intelligent Transmitter Terminal Definition (Power Supply DC24V)
No.
Name
Instruction
1
24V
DC24V Power supply +
2
NC
Not connected
3
GND
DC24V Power supply-
4
NC
Not connected
5-6
WASH
Wash relay normally open contact
7-8
RELAY2
Relay 2 normally open contact
9-10
RELAY1
Relay 1 normally open contact
11
NC
Not connected
12
V+
Sensor power supply+
13
GND
Sensor power supply-
14
485A
Sensor 485 communication A
15
485B
Sensor 485 communication B
16
NC
Not connected
17
NC
Not connected
18
NC
Not connected
19
NC
Not connected
20
NC
Not connected
21
Io1+
4-20mA Current output 1+
22
Io1-
4-20mA Current output 1-
23
Io2+
4-20mA Current output 2+
24
Io2-
4-20mA Current output 2-

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - １５ - http:// www.cndongrun.com
FIG.7 Transmitter Back Panel Wire Map Diagram (Power supply AC220V)

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - １６ - http:// www.cndongrun.com
Table 3 Intelligent Transmitter Terminal Definition (Power Supply AC85-265V)
No.
Name
Instruction
1
N
AC85-265V Power supply null line
2
NC
Not connected
3
L
AC85-265V Power supply fire wire
4
NC
Not connected
5-6
WASH
Wash relay normally open contact
7-8
RELAY2
Relay 2 normally open contact
9-10
RELAY1
Relay 1 normally open contact
11
NC
Not connected
12
V+
Sensor power supply+
13
GND
Sensor power supply-
14
485A
Sensor 485 communication A
15
485B
Sensor 485 communication B
16
NC
Not connected
17
NC
Not connected
18
NC
Not connected
19
NC
Not connected
20
NC
Not connected
21
Io1+
4-20mA Current output 1+
22
Io1-
4-20mA Current output 1-
23
Io2+
4-20mA Current output 2+
24
Io2-
4-20mA Current output 2-

FDO-99E Fluorescence Method Dissolved Oxygen Analyzer Product Manual
Shandong Dongrun Instrument Science and Technology Co., Ltd. - １７ - http:// www.cndongrun.com
7、Panel Introduction
Instrument front panel is shown in Figure 8,the upper half is the display area, including 128*64 lattice LCD
display interface and one LED light; and the lower part is the key area, including five keys. Specific functions
are shown in Table 4.
FIG 8. Transmitter Front Panel Schematic Diagram
Table 4. Transmitter Front Panel Function Description Table
No.
Name
Mark
Instruction
1
LED Light
ACT
System running status indicator light
2
Menu Key
Press this key for 2s under measurement state, then enter the settings
interface；press this key back to the previous menu under setting
state.
3
Up key
Press this key under setting state to make number plus 1
or switch the up display content.
4
Down key
Press this key under setting state to make number minus 1
or switch the down display content.
5
Right key
Press this key under setting state to move to the right to
switch display content or page flip.