RDQJ-2 Manual Instruction 00425

RONGDE

RDQJ-2

RDQJ-2 Suction Hydrocarbon Gas Detecting System

User Manual

Document No.: 2550-200

SHANGHAI RONGDE ENGINEERING EQUIPMENT CO., LTD --------------------------------------------------------------------------------------------------------------------------- ADD:

Room1401, Xingyu Building No.1 Lane 1695, Pudong Ave Shanghai, China

PC: 200135 TEL: 0086-21-68532791 FAX: 0086-21-58212204 E-mail: [email protected] Website http://www.rongded.com

RONGDE RDQJ-2 Document No.: 2550-200-0-05 User Manual for RDQJ-2 Suction Type Gas Detecting System

RDQJ-2 Plan History-Content 0- 1 Revision: 2.01

Content 1. 1. Brief introduction 1-1

2. 2. System configuration and its working principle 2-1

2.1 2.1 System components 2-1

2.2 2.2 System working principle 2-5

3. 3. Main technical characteristics 3-1

3. 1 3.1 System 3-1

3. 2 3.2 Alarm and control Panel (including Extension alarm panel)

3-1

3. 3 3.3 Hydrocarbon gas detector 3-1

4. 4. Installation 4-1

4.1 4.1 Installation requirement 4-1

4.2 4.2 Location of Detection cabinet 4-1

4.3 4.3 Sample air outlet 4-1

4.4 4.4 Requirement of bulkhead penetrator 4-1

4.5 4.5 Arrangement of sample point 4-1

4.6 4.6 Cable 4-1

5. 5. Operation and setting 5-1

5.1 5.1 Start up 5-1

5.2 5.2 Auto mode 5-2

5.3 5.3 Manual operation mode 5-6

5.4 5.4 Setting 5-8

5.5 5.5 Stop to detecting automatically 5-17

6. 6. Alarm and solution 6-1

6.1 6.1 Alarm indication 6-1

6.2 6.2 Alarm solution 6-1

6.3 6.3 Pre-draining loop failure 6-1

6.4 6.4 Sample loop failure 6-1

6.5 6.5 Lamp test 6-1

7. 7. Troubleshooting 7-1

1 Appendix 1 Hydrocarbon Gas Explosive Limit 8-1

2 //

Appendix 2 Chinese/English Abbreviation in each interface and English/Chinese Comparison

8-2


RDQJ-2 1. General description 1-1 Version: 2.01

1. 1. Brief introduction 1.1

1.1 Purpose

RDQJ-2

,

,

Suction Flammable Gas Detecting Equipment Type RDQJ-2 is mainly used to monitor, display and warn for the density of flammable gas from the easily concentrated areas on the hazard carrier, operating vessel such as the tanker, chemical tanker, liquefied gas carrier, sea oil extraction platform etc. The equipment can also realize data communication with central computer system on board.

1.2 1.2 Complied regulations

This equipment complies with following regulations:

IACS UR F43 (2002 6 2)

IACS UR F43 (Rev. 2 June 2002)


2. 2. System configuration and its working principle 2.1

RDQJ-2 1 () ()

2.1 System Components

The configuration of the RDQJ-2 suction Gas Detecting Equipment is shown on Fig.1. It consists of flammable gas detection cabinet (hereafter called detection cabinet), flammable gas alarm and control panel (hereafter called alarm and control panel), extension alarm panel and suction pipe channels

RUN

RONGDE

TestGas High Horn stop Ackn

DIMMER

1 RDQJ-2

Fig.1 Arrangement of RDQJ-2 Suction Flammable Gas Detecting Equipment

RDQJ-2

Except sending out the alarm when concentration of detected gas reaches or exceeds the pre-set value, RDQJ-2 Suction Gas Detection System also designs with the monitoring and alarm functions for equipment itself such as the power failure and fault of detection lines.

At the same time, system also monitors the gas concentration inside the Detection Cabinet itself. The system will override the sample point and stop the detecting of this point as soon as this sample point found the fault and alarm. All alarms occurred will be saved for further reference.

RDQJ-2 2. System Configuration and working principle 2-1 Version: 2.02


20

Total 20 channels of flammable gas can be provided in this system.

2.1.1 2.1.1 Detection cabinet

There are two pieces of pumps (Pre-draining Pump and Sample Pump) in the gas detection cabinet.

The Pre-draining Pump is be used to pre-draw the sample air from the sample point to ensure fresh sample in the tube when gas detector scans this point. Each sample point is to be pre-drawn in the sequence before scanning.

The Sample Pump is used to deliver the sample air to the gas detector one by one in the sequence, When the gas concentration of one sample point reaches or exceeds the alarm value, the system will trigger an audible and visual alarm.

2.1

The detection cabinet also installs with the gas detector, pre-drawing solenoid valve and sample valve, gas detector for cabinet itself, purge air assembly etc.

Among those the gas detector for cabinet itself is used to detect the flammable gas inside this cabinet.

Fig.2.1 shows the inner layout of detection cabinet.



PC3025J 24V DC

PC3025J 24V DC

PS1PS2PS3PS4

2.1 Fig.2.1 A picture of inner structure for detection cabinet

2.1.2 2.1.2 Alarm and control panel

This alarm and control cabinet is used to adjust, control and display the alarm and fault statues.

2.2

All adjustment, setting, control and display are carried out by the Touch Screen on the front panel, The buzzer, warning lamps, pushbuttons for silencing, de-flashing and lamp test are also arranged on the front panel. The layout of the front panel of alarm and control panel is shown in Fig. 2.2.

/

The power device, control modules and input/output devices are mounted inside the cabinet.



Display panel

PowerAC220V

PowerDC24V

Power failure

BuzzerSystemfailure

2.2 Fig. 2.2 Front panel layout of alarm and control panel

2.1.3 2.1.3 Extension alarm panel

The extension alarm panel is installed on the bridge, control room or other places needed and is mainly used to extent the system alarms as well as silencing the audible alarm and de-flashing of the lamp at those places.

2.1.4 2.1.4 Suction pipe channels

The suction pipe channels are formed of pre-drawing pump, sample pump, solenoid valve and corresponding pipe lines. They are installed in the detection cabinet.



2.2 2.2 System working principle

2.3

Fig. 2.3 Block Diagram of Gas Detection System

The system has two running modes AUTOMATIC sampling and MANUAL operation.

In AUTOMATIC mode, the system will start scanning all sample points except the sample points which have been override by manual before starting.

In MANUAL mode, the system will only scan the sample point which has been selected by manual before starting.

2.3 1 Y1A Y1A Y1B 1

Refer to Suction Gas Detection Principle Diagram of Fig. 2.3 for read this section. In AUTOMATIC mode, first of all the sample air is to be pre-drawn from No.1 sample point by Main Pump (Y1A sampling solenoid valve opens and main pump runs), sampling time is based on the maximum length of each sampling line. After the sampling time is over, Y1A sample solenoid valve closes and Y1B analysis solenoid valve opens, and then sample pump runs. The sample air from No.1 sample point will be delivered to the gas detection transmitter (i.e., Gas Detector for short name) for detecting by Sample Pump. At same time, Main Pump is turned

Detecting Alarmand Control Panel

PS5

Y15B

A

P RRP

AA

P R

RP

A

1615

A

P R

Y16B

Y16AY15A

Y17B

Y17AA

P R

1714

RP

A

Y14A

Y14B

Purge air source

Y01

Y02

Y11A Y12A Y13A

Y13BY12BY11B

Y9A

Y9B

Y8AY7AY6AY5AY4AY3AY2AY1A

Y8BY7BY6BY5BY4BY3B

RP

A A

P R

11

RP

A

12 13

A

P R

1

RP

A

A

P R

Y1B

2

Y2B

RP

A

A

P R

3

RP

A

A

P R

0.3MPa clean air

Flame arresters

Ball valve

SAMPLE TUBE INLETS

Sample pipe inlets

Ball valve

4 5 6 7 8 9

RP

A

A

P R RP

A

A

P R

RP

A

A

P R

RP

A

A

P R

RP

A

A

P R

RP

A

A

P R

M17

Flow regulator

Gas detector

0.7MPa

()Cabinet gas detector

Clean air pres.switch

Exhaust

RP

A A

P R RP

A A

P R RP

A

BG2

BG1

Shipyard supply

Flame arresters

Air supply

RP

A

A

P R

Y10A

Y10B

10

RP

A

A

P R

A

P R

Y18B

Y18AA

P R

18

A

P R

Y19B

Y19AA

P R

19

Y20B

Y20A

20

Sample pump

Y03

Test gas valve

M2

Sample loopPressure switch

PS3

Test Gas

/Exhaust Pre-pumping gas

Pre-draining Pump

M1

PS4

Sample loopPressure switch

PredrainagePressure switch

PS1

PredrainagePressure switch

PS2

A

P R

P

P

P

P



Y1A Y2A 2

15

1 Y1B 2

to pre-draw the sample air from No.2 sample point automatically by opening of Y2A sample solenoid valve after Y1A sample solenoid valve closed.

If the gas concentration of the sample point reaches or exceeds the pre-set alarm value, the system will trigger an audible and visual alarm, and the alarm value of gas concentration, alarm point, alarm time and sample pressure value will be displayed on the display screen. In general condition, the detecting time is equal or longer than the response time of the gas detector (about 15 seconds).

When detecting of No.1 sample point is finished (Y1B analysis solenoid valve closes, Sample Pump stops), the cleaning solenoid valve opens to purge the gas detector with the clean air. Then the gas detector is connected to next sample point again to detecting the next sample point after the gas concentration value comes to zero by purging.

System shall be running according the above mentioned procedure for all sample points in the sequence automatically until the end of the first cycle. Then the second cycle of detection process shall be started again.



RDQJ-2 3.0 Technical Characteristic 3-1 Version:2.01

3 3 Main Technical characteristics

3.1 3.1 System technical specification

AC220V 50Hz

DC24V

Power supply: AC220V 50Hz;

Back-up power: DC24V;

Detecting gas: Hydrocarbon gas in air

: 10%30% LEL Low alarm setting value: 10%LEL ~ 30%LEL;

20%30% LEL High alarm setting value: 20%LEL ~ 30%LEL

5LEL Detecting accuracy: 5LEL between alarm acting value and

alarm setting value;

20 Detecting points: 20 routes;

-30kPa Normal working pressure (suction): -30kPa

0.2MPa Purge air source pressure: 0.2MPa

15s

Responding time: 15s

(after detecting line opened)

3.2 3.2 Alarm and control panel (include extension alarm panel)

AC220V 50Hz

DC24V

Power supply: AC220V 50Hz;

Aux. power: DC24V

20 Max detecting points: 20 routes

: 10%30%LEL Low alarm acting value: 10%LEL ~ 30%LEL

: 20%30% LEL High alarm acting value: 20%LEL ~ 30%LEL

3.3 3.3 Hydrocarbon gas detect transmitter

Detecting gas: Hydrocarbon gas in air;

Detecting method: Diffused sampling

Detector: type : Manifold

Detecting principle: semiconductor

DC24V1226V

Working voltage: DC24V (can normally work in the range of 12~26V), three wires;

1.2W Power consumption: 1.2W


RDQJ-2 3.0 Technical Characteristic 3-2 Version:2.01

420mA Output signal: 420mA;

5 Detecting accuracy: 5

IP54 Protection: IP54


RDQJ-2 4. Installation 4-1 Version: 2.01

4. 4. Installation 4.1

800mm

4-14-2

4.1 Alarm and control panel, detection cabinet and extension alarm panel must be positioned in the safety location which is out-off flammable area, and should be mounted in the cargo control room, bridge or engine control room which is dry, ventilated, good lighting and no serious noise.

The cabinet should be installed at suitable height and a 800mm space in front should be lifted in order to let duty person operation and observation.

Below Fig.4-1~Fig.4-2 are the mounting size of each cabinet for reference.

4-1 Fig.4-1 Mounting size of Alarm and Control Panel

Display panel

Power

AC220VPowerDC24V

Power failure

BuzzerSystemfailure



4-3

Fig.4-3 Layout of Detection Cabinet 4.2

4.2 The detection cabinet should be arranged on the bulkhead. If where the cabinet cannot be arranged on the bulkhead, then the sample pipes shall be steel or other equivalent material and without detachable connections, except for the connection points for isolating valves at the bulkhead and cabinet. The sample pipes are to be laid by their shortest route.

4.3

4.3 Sample gas outlet should be set in the safe area and discharge the sample gas to the open atmosphere within a safe location.

4.4

4.3

4.4 The bulkhead penetrator (or sample pipe) between safe and hazardous areas should have the fire integrity same as the compartment of bulkhead.

Every relevant of the sample gas line on the bulkhead of the safe side should be installed with a hand-operation isolating valve.

Fig.4.3 is the installation sketch map of sampling pipe lines for reference purpose.

43

55

85

469

188

5

145

525

55

171

8643

1325

1275

1225

GAS DETECTION CABINET

600

560

4-?14



Note: The installation of sampling pipe lines should be carried out according to the drawings provided with the equipment. Clamping of the piping shall be performed according to good practice and prevailing rules. Piping fittings or flanges of good quality shall be used, and materials in the fittings/flanges shall be selected to fit the material in the piping. All piping shall be flushed prior and the pipe ends are kept sealed at all times before connection.

4.5

450mm

4.5 The sample points should be arranged at the bottom of the tank (or the bottom plate of the cargo pump room), within the range of 450mm height above

4.6

4.6 Signal cables between the alarm panel, detection cabinet and extension alarm panel should be used with shielded cable. The outdoor cables should be added with metal sheath tube.

Note: All cables must be connected according to drawings provided with the equipment. Connection and clamping shall be also performed according to good practice and prevailing rules.

4.3

Fig.4.3 Sampling pipe lines installation sketch map


RDQJ-2 5.0 How to use 5-1 Version: 2.01

5. 5. Operation and setting

The display, operation and setting of this system shall be carried out through the touch screen located on the front panel of detection panel. Therefore familiar using the touch screen should be the fundamental requirement for operation this system.

The system has two operation modes: Auto detection and Manual operation.

5.1 5.1 Start-up

,STANDBY 5.1

30s

0.15MPa30s

(1) Switch on the power supply, the screen displays STANDBY! as shown on fig.5.1. System enters standby state. The countdown time (30s) displays on the screen. In this standby period, cleaning solenoid valve opens, sample detector is purged with clean air (air pressure 0.15Mpa). After 30s, the cleaning procedure finished and the preparation is finished.

5.1 Fig.5.1 System startup interface

5.2 AUTOMANUAL SET

(2) The system automatically switches to MAIN MENU interface after finished with the preparation phase, as shown on fig.5.2. Interface displays three options: AUTO, MANUAL and SET



5.2 Fig.5.2 MAIN MENU interface

20s AUTO SEQUENCE CONTROL() 5.3

(3) After 20s, if user has no any acting, then the system enters AUTO SEQUENCE CONTROL operation mode automatically. Refer to the interface as shown in Fig.5.3.

5.2 5.2 Auto mode

5.3

Fig.5.3 Auto detecting interface

Channel State : White: Normal : Yellow: Override : White: Normal : Green: is being

pre-drained : White: Normal : Green: is being

detected : GreyUnavailable

Channel



AUTO AUTO SEQUENCE CONTROL() 5.3

l Override Point ()

l Pre-drainage Point (: )

l Sample Point (: )

l Alarm Point

l Gas Detector

l Clean Air Pressure

l 0.0%LEL:

l ALM:

l

AUTO:

MANU

PURGE

SAMP

SET

(1) Touch AUTO button, screen switches to AUTO SEQUENCE CONTROL interface, as shown in fig.5.3. Following items are displayed on the screen:

l Override Point (Override status of each gas detecting channel: in the override state or detecting state)

l Pre-drainage Point (Pre-draining status: it is being pre-drained or waiting for pre-draining)

l Sample Point (Detecting status for gas sample: It is being detected or waiting for detection)

l Alarm PointCurrent alarm points number

l Gas DetectorGas detection sensor current status: Normal or fail

l Clean Air PressureThe status of clean air pressure: The pressure is normal or fail

l 0.0%LEL: The percentage value of the current gas concentration detected

l ALM: The concentration percentage value of the gas in the alarm condition

l The meaning of each indicator at lower position

AUTO: The system is at AUTO mode

MANUThe system is at MANU mode

PURGEThe gas detecting chamber is purged

SAMPThe gas sample is being detected

SETThe system is at parameter setting mode

20 Override( ) Pre-drainage Point ()Sample Point ()

Remarks:

There are total three lines of circle graph and 20 detecting channels for each line. They are used to display the status for Override, Pre-draining Point and Sample Point.

Override,

For the Override, the color of the circle graph is white when the detection point is normal or is being detected. The color will become yellow if this detection point is overridden by manual or auto operation. The detection channel is unavailable if the color is



grey. Pre-drainage Point,

For Pre-draining Point, the color of the circle graph is white during this detection point is normal and not detected in the state. If the green color, it shows that this point now is being detected.

Sample Point Pre-drainage Point

The Sample Point is the same state as the Pre-draining Point.

(2) Automatic process begins running, white color of graph means this point is normal and not detected, while green means this point is being detected.

5.4, HC Gas 0.0 (%LEL) () Cabinet Gas 0.0 (%LEL) ()

(3) If user wants to know the detailed analyzing condition of sample point, touch the key at the top-right corner of screen by finger, then the screen switches to the interface in Fig.5.4. The screen shows for HC Gas 0.0 (%LEL) (the concentration of flammable gas of detected area) and Cabinet Gas 0.0 (%LEL) (the concentration of flammable gas inside of detection cabinet).

GAS CONTENT 1-6 5.5 6

GAS CONTENT 7-12 6

Touch key again, the screen switches to GAS CONTENT 1-6 interface (Fig.5.5). This interface shows the gas concentration (indicates by percentage) of each detection point of the first 1-6 channels.

Further touch key again, the screen changes to GAS CONTENT 7-12 interface to show the gas concentration (indicates by percentage) of next 6 detection points. Other detection points can be shown by touching key again.



5.4 Fig.5.4 Gas concentration display interface

5.5 Fig.5.5 Each flammable gas concentration interface

ALARM RECORD 5.6

(4) If want to know alarm recorded, push ALARM RECORD key to enter the ALARM RECORD interface, as shown in Fig.5.6. Screen will display historic alarms recorded (can save to Max alarm data of 100 pieces). Red color means that now it is still in



100

100

ALARM RECORD 5.6WB3 Gas high NAME 2

alarm state. Blue means that it is recovered to normal state. When a new alarm happens but the recorded alarms have exceeded 100 pieces, it will delete the foregoing records. Push ALARM RECORD key again, the ALARM RECORD interface will disappear. The meaning of WB3 Gas high and others in Fig.5.6 are shown in appendix 2 or Detecting gas table, those detected gas and channel name will be different with the each different project.

Push or can change the page.

AUTO SEQUENCE CONTROL () 5.3 EXIT

(5) If want to stop running automatic mode, touch EXIT key in the AUTO SEQUENCE CONTROL interface, the system will stop running automatic mode and return to MAIN MENU interface.

5.6 Fig.5.6 Alarm Record Interface

5.3 5.3 Manual operation mode

MAIN MENU() MANUAL

5.7

(1) Push MANUAL button on MAIN MENU interface, screen switches to MANUAL CONTROL window, its interface is shown in Fig.5.7



5.7 Fig.5.7 MANUAL CONTROL interface

3 3 AUTO SEQUENCE CONTROL ()

3

(2) In the interface, there are corresponding point name buttons to choose. Push 3 button for example, to choose 3 channel, dialog box switches to AUTO SEQUENCE CONTROL interface, system automatically begins running for this channel, that is, to sample pre-drain and sample detect for this 3 point after finished with purging of the detector. Meantime, the white color means that it is pre-draining of gas sample and green means that it is analyzing and detecting of gas sample.

5.2 5.4

5.23

(3) System will enter the interface as shown in Fig.5.2 according to the procedure described in section of 5.2 (3) to get analyzing situation of this point. For the further operation, follow the steps as described in section 5.2 (3).

MAIN MENU

MAIN MENU20 AUTO

(4) System shall return to MAIN MENU interface automatically from MANAUAL mode if there is no further operation after finished with the pre-draining and the detection of selected point by operator. Other channel can be selected by user according to above steps. The MAIN MENU interface will be changed into AUTO mode if user has no further operation within 20 seconds.

MANUAL CONTROL Back MAIN MENU ()

(5) Push Back key on MANUAL CONTROL window, the interface will return to MAIN MENU interface.



5.4 5.4 System Setting

MAIN MENU() SET

5.8

(1) Push SET button on MAIN MENU interface to enter system setting procedure. Firstly the password window comes on screen, as shown in Fig.5.8.

5.8

Fig.5.8 Code input interface before enter setting

5.9

(2) Touch the code input window, and then pop-up soft keypad (Fig.5.9).

5.9 Fig.5.9 Code input interface



3 1234 ENT ENTER OPERATION MENU() 5.10

3Input password 1,2,3,4, then push ENT to confirm. After that push ENTER button, enter OPERATION MENU interface, AS shown In Fig.5.10.

5.10 OPERATION MENU

Fig.5.10 System setting interface (OPERATION MENU)

: The meaning of every option is as follows:

GAS DETECTOR ZERO CALIBRATION -

GAS DETECTOR ZERO CALIBRATION--for detector zero set

GAS DETECTOR CALIBRATION -

GAS DETECTOR CALIBRATION for calibration of detecting range

ALARM SET - ALARM SET for setting of alarm limitation value

OVERRIDE -

OVERRIDE for setting of override sample points

SAMPLE POINT SET -

SAMPLE POINT SET for setting of total sample points

5.4.1 5.4.1 Detector zero set GAS DETECTOR ZERO CALIBRATION 5.11-1

(1) Push GAS DETECTOR ZERO CALIBRATION button, enter the detector zero setting interface (shown in Fig.5.11-1). At that time, the cleaning air solenoid valve opens to purge the gas detector for cleaning the detector inside.



5.11-1 Fig.5.11-1 Detector zero setting interface

START MONITOR VALUE SET 5.11-2

(2) Touch START key, system switches from MONITOR state to VALUE SET state. (shown in Fig.5.11-2)

5.11-2 Fig.5.11-2 Detector zero set interface

0 Calibration 0 AD AD 0 Calibrate AD PLC

(3) Push 0% Calibration, interface will display Zero AD value which is corresponding 0% LEL value. After AD value is stable, push 0% Calibration to save the present AD value to PLC and PLC takes this value as the zero. Push START to return to MONITOR state again, then push Back key to return to system



START MONITOR Back

set interface (OPERATION MENU). Zero set (or calibration) is now finished.

5.4.2

5.4.2 Detector range calibration

5.12 Fig.5.12 Detector range calibration interface

GAS DETECTOR CALIBRATIOM

5.12

(1) Push GAS DETECTOR CALIBRATION button, enter the interface for detector arrange calibration (shown in Fig.5.12).

5.13 Fig.5.13 Detector range calibration input interface



30LEL

(2) Connect the standard test gas (e.g. 30%LEL propane) to the range calibration joint inside of detection cabinet, open the pipe calibration valve inside the cabinet, the detection pump is running

30LEL

CURRENT VALUE 11.0

(3) The interface will display the electric current value of 30%LEL standard test gas, for a sample, CURRENT VALUE 11.0.

30 LEL 5.13 11.0 ENT Back

(4) Push 30% LEL, switch to range calibration input interface (as shown in Fig.5.13), input 11.0 by keyboard and push ENT key to confirm. After that the setting for detector range calibration is finished, then push Back key to return to system setting interface (OPERATION MENU). Now the detector range calibration is finished.

10 LEL50 LEL

(5) The detector range calibration for 10 LEL and 50 LEL shall be carried out as above procedure.

5.4.3 5.4.3 Alarm value

ALARM SET

5.14

(1) Push ALM SET button, enter the gas alarm setting interface (GAS DETECTOR ALARM SET), as shown in Fig.5.14).

5.14 Fig.5.14 Detector gas alarm setting interface



GAS DETECTOR ALARM.SET

10 ENT 5.15

(2) Push GAS DETECTOR ALARM SET key, pop numeric keyboard, input gas alarm value (e.g. 10), and push ENT to confirm. After that the setting of gas alarm value is finished, its interface is shown in Fig.5.15.

5.15

Fig.5.15 Detector gas alarm setting interface Back (OPERATION MENU)

(3) Touch Back key, the screen returns to the system set interface (OPERATION MENU).

5.4.4 5.4.4 Manual override setting for sample channels

If some sample points dont need to detect at current (e.g. this sample point doesnt exist with the hydrocarbon gas, or this channel is failure), the OVERRIDE function can be used for these channels.



5.16 Fig.5.16 Manual override setting interface for sample points

1 OPERATION MENU() OVERRIDE

OVER RIDE CONTROL 5.16

1Push OVERRIDE key on OPERATION MENU interface, the interface will switch to OVER RIDE CONTROL interface. Fig.5.16 shows this interface.

OVER RIDE CONTROL

( 1820) ON OFF

OFF ON

2Choice the point name to be Overridden as requirement on OVER RIDE CONTROL interface. This selected point shall be not detected during auto detection procedure and manual detection operation after this point has been overridden.

Touch this No. button (for example, 18~20), the letter ON at the right frame will become OFF. It indicates that this point of gas sample is overridden. Touch this button again, the letter OFF will become ON again if it is required to list this gas sample into the gas detection.

5.2AUTO SEQUENCE CONTROL

5.16 OFF. OFF ON

Remarks: During system running process, if one fault monitor point is failure (e.g. sample pressure is low). It thereby affects the normal sample detection function, this channel will be overridden and trigger an alarm automatically. By this time, the overridden point will be became yellow color in the interface of AUTO SEQUENCE CONTROL (Fig.5.2). At the same time, OFF comes at the right block of this channel No. Touch this button with two times the OFF changes into ON after the fault removed. Meantime this channel is at detected status now.



5.4.5 5.4.5 Setting for sample points

20

The maximum sample point of this system is 20 channels. The current sample points number can be set according to the actual project.

1 OPERATION MENU() SAMPLEPOINT SET() SAMPLE POINT SET 5.17-1

1Push SAMPLE POINT SET key on OPERATION MENU interface, the interface will switch to SAMPLE POINT SET interface. Fig.5.17-1 shows this interface.

5.17-1

Fig.5.17-1 Setting the sample channel number (2) + - ( 17) USE ,5.17-2

2Touch + or button to increase or reduce the number of sample point 17, for example. The sample gas number will be saved in the system after push USE button, as shown in Fig.5.17-2.



5.17-2

Fig.5.17-2 Setting the sample channel number

AUTO SEQUENCE CONTROL GAS CONTENT 13~20 1720 5.17-3 5.17-4.

At the same time, channels of 17~20 are changes into grey color and those channels now becomes unavailable in the interfaces of AUTO SEQUENCE CONTROL and GAS CONTENT 13~20, as shown in Fig.5.17-3 and Fig.5.17-4

5.17-3 1720

Fig.5.17-3 Channels of 17~20 are inhibited and unavailable



5.17-4 1720

Fig.5.17-4 Channels of 17~20 are inhibited and unavailable

3 Back (OPERATION MENU)

3Touch Back key, the screen returns to the system set interface (OPERATION MENU).

5.5

5.5 Stop to detect automatically

5.5.1

5.3GAS DETECTOR FAIL

5.5.1 When the gas detector is failure, the system will stop to detect sample gas automatically and trigger a failure alarm. At the same time, item GAS DETECTOR shows FAIL in yellow color in the interface of Fig.5.3.

5.5.2 30LEL

l SYSTEM FAIL

l ALARM RECORD

l 5.3 5.4 CANINET GAS

5.5.2 When the hydrocarbon gas density inside the sample cabinet is more than 30%LEL, the system will automatically stop sampling.

Meantime:

l The SYSTEM FAIL indicator on the control panel flashes in red color and the buzzer sounds

l Push ALARM RECORD on the display interface, the alarm record can be read

l Push in Fig.5.3 interface, the interface changes to Fig.5.4 interface. The alarm value is shown behind item of CABINET GAS in this interface


RDQJ-2 6.0 Alarm Status and Treatment 6-1 Version: 2.01

6. 6. Alarm and Solution 6.1

6.1 The buzzer sounds and the corresponding alarm indicator lights with flashing automatically when one of the following failures appears:

Gas alarm

(1) Hydrocarbon gas density reachs or exceeds alarm preset value Gas alarm flashes in red;

(Power failure)

(2) Main power failure (Power failure flashes);

System failure

Override

(3) Any sample channel is failure (System failure flashes);

(4) Any sample channel is overrided automatically because of the fault (Override flashes).

6.1

Fig. 6.1 The indicators and operation buttons on alrm and control panel

6.2 , Gas alarm

,:

6.2 When hydrocarbon gas density reaches or exceeds alarm preset value, buzzer sends out continuous sound and the red alarm light (Gas alarm) flashes. When other failure signals of equipment itself appears, the buzzer sounds intermittently and the yellow failure light flashes.

The person on duty can operate according to following steps after received this alarm signal:

Horn stop(),

(1) Push Horn stop button to stop the buzzer sounding;

Power

AC220VPowerDC24V

Power failure

BuzzerSystemfailure


RDQJ-2 6.0 Alarm Status and Treatment 6-2 Version: 2.01

Ackn(), ,,..

(2) Push Ackn pushbutton, the alarm indicator stops flash and keeps steady lighting until the alarm signal disappears. The alarm lamp goes out automatically after the fault removed.

Check the site condition in time to solve the problem based on alarm caused.

6.3 System alarm()

6.3 When the any pre-draining pump alarm (vacuum pressure is abnormal) is caused, the System alarm indicator flashes. Then check according to following two ways to remove the failure:

(1) Whether the main solenoid valve opens or not

(2) Whether the pipe is blocked (there is ballast water in tank)

6.4 System alarm()

6.4 When any line of sample pressure comes alarm (sample pressure is abnormal), the System alarm indicator flashes. Then check according to following two ways to remove the failure:

(1) Whether the sample solenoid valve opens or not

6.5 Test

(2) Whether the sample pipe is blocked

6.5 The indicators and buzzer can be tested by pushing Test button.

6.6 1 2

6.6 Appendix 1 lists the Hydrocarbon Gas Explosive Limit in percent, and Appendix 2 shows the Chinese/English Abbreviation, English/Chinese names appeared on every display picture.


RDQJ-2 7.0 Troubleshooting 7-1 Version: 2.01

7.0 7.0 Troubleshooting (1) (1) Failure: No display

Cause:

a, a, Wrong wiring

b, b, PCB failure

c,

c, Power failure

Actions

a, a, Check wiring and connect again if wrong wiring

b, b, Return to factory for repair

c,

c, Check the power supply and recovery

(2) (2) Failure: Indicating too high or too low

Cause:

a,

b,

a, Zero excursion

b, Sensor fault

Actions:

a, a, Calibrate zero again

b, b, Replace damaged sensor by new one

(3) (3) Failure: Reading unstable

Cause:

a, a, Warming time not enough

b, b, Sensor failure

c, c, PCB fault

d, d, Electro disturbance

Actions:

a, a, Waiting for certain time after system started

b, b, Replace damaged sensor by new one

c, c, Send back to factory to repair

d, d, Check the grounding if it is good


RDQJ-2 7.0 Troubleshooting 7-2 Version: 2.01

(4) (4) Failure: Responding time too long

Cause;

a, a, Sensor probe is jammed by dust

b, b, Sensor failure

c, c, PCB failure

Actions:

a, a, Clean up the dust screen and replace the air-filter

b, b, Replace by new one

c, c, Return back to factory for repair Order Notice

Following information should be provided by user when order the equipment:

a. a, Detected points

b. b, Cargo oil varieties loaded

c. c, Other special requierments shopuld be specfied


RDQJ-2 8.0 Appendix 8-1 Version: 2.01

1 Appendix 1 Hydrocarbon Gas Explosive Limit

--%Explosive limit in air (volume fraction) / %

Gas name

Chemical formula Upper limit Lower limit

Carbon monoxide

CO 12.5 74

Carbon bisulfide

CS2 1.0 60

Ethane C2H6 3.0 15.5

Ethanol C2H5OH 3.4 19

Ethene C2H4 2.8 32

Acetylene C2H2 1.5 100

Aether C2H5OC2H5 1.7 36

Methane CH4 5.0 15

Methanol CH3OH 5.5 44

Toluol C6H5CH3 1.2 7

Propane C3H8 2.2 9.5

Propylene C3H6 2.4 10.3

Chloropropane

C3H7Cl 2.6 11.1

Ammonia NH3 15 30.2

Benzene C6H8 1.2 8

Formaldegyde

HCHO 7.0 73

Kerosene 0.7 5

Hydrogen H2 4.0 75

Turpentine 0.8

Light oil 0.9 6



2 // ()

Appendix 2 Chinese/English Abbreviation in each interface and English/Chinese Comparison Chart

(Only for reference, this appendix will be changed with project)

Abbreviation English Chinese

F.P.T Gas high F.P.T high gas content

F.P.T Main vacuum F.P.T Main vacuum alarm

F.P.T Sample press F.P.T Sample press alarm

1P WBT Gas high 1P W.B.T high gas content 1#

1P WBT Main vacuum 1P W.B.T Main vacuum alarm 1#

1P WBT Sample press 1P W.B.T Sample press alarm 1#

1S WBT Gas high 1S W.B.T high gas content 1#

1S WBT Main vacuum 1S W.B.T Main vacuum alarm 1#

1S WBT Sample press 1S W.B.T Sample press alarm 1#


































WBT Gas high W.B.T high gas content

WBT Main vacuum W.B.T Main vacuum alarm

WBT Sample press W.B.T Sample press alarm

Gas detector fail Gas detector failure

Main V. sensor fail Main vacuum sensor failure

Clean air press low Clean air pressure low

Sample P. sensor fail Sample pressure sensor failure


Main power fail Main power failure

F.P.T Override F.P.T Override

1P WBT Override 1P W.B.T Override 1#

1S WBT Override 1S W.B.T Override 1#














WBT Override W.B.T Override

Cabinet Gas High Cabinet high gas content

C. Gas detector fail Cabinet gas detector failure

FPT Au. Ov. F.P.T Auto Override

Documents

RDQJ-2 Manual Instruction 00425