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Yokogawa
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RF20H
User Manual
28 pgs2.76 Mb0
User Manual
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Yokogawa RF20H User Manual

Instruction
EXAtrac RF20H (Extract 810 and 820)
Manual
Process retractable holder
IM 12B06K05-E-E
1st Edition
2
Table of contents
1.1 General safety instructions 4
1.2 Proper use 4
1.3 Hazard areas and residual hazards 4
1.4 Equipment 5
1.5 Safety equipment 5
1.6 Staff 5
1.7 Disposal 5
1.8 Symbols and pictograms 5
2.1 RF20H (Extract 810 and 820) automatic retractable holder 6
2.2 Process integration 7
3 Delivery 8
3.1 Package contents 8
3.2 Checking the delivery 8
4.1 Preparing the system 9
4.2 Preparing the holder 9
4.3 Installing the holder 9
4.4 Adjusting the protection cage 9
4.5 Installing the cleaning pipes 10
4.6 Installing the pneumatic tubes 10
4.7 Installing the sensor 10
5.1 Commissioning the holder 12
5.2 Automatic operation of the holder 12
6.1 Servicing instructions 13
6.2 Checking wetted sealings 13
6.3 Removing the sensor 13
6.4 Removing the pneumatic tubes 13
6.5 Removing the cleaning chamber with process connection 14
6.6 Replacing the wetted sealings 14
6.7 Removing the insertion rod 15
6.8 Installing the insertion rod 16
6.9 Assembling the drive unit and cleaning chamber 16
6.10 Replacing the drive unit 16
6.11 Servicing plan 16
6.12 Disposal 16
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7.1 Holder does not move from the “service” position to the “measuring” position 17
7.2 Holder does not move from the “measuring” position to the “service” position 17
7.3 Incorrect position reply 17
7.4 No position reply 17
7.5 Frequent contamination of sensor 17
7.6 Sensor breaks frequently 18
7.7 Leakage of process liquid at inspection window 18
7.8 Compressed air emitted at inspection window 18
8.1 Standards 19
8.2 Material properties 19
8.3 Cleaning ports 19
8.4 Sensors 19
8.5 Pneumatic equipment 19
8.6 Dimensions 20
8.7 Ambient conditions 21
8.8 Process conditions RF20H (Extract 810 and 820) S.S./Hastelloy 21
8.9 Process conditions RF20H (Extract 810 and 820) plastic 21
8.10 Ordering structure RF20H (Extract 810 and 820) S.S./Hastelloy 22
3
10.1 Statement of compliance 24
10.2 Atex certificate 25
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1. Safety and protection measures
1.1 General safety instructions
The RF20H (Extract 810 and 820) retractable holder is designed in a way that when the operation manual is observed the product does not cause any hazards.
• Read the operation manual before use.
• Do only install and operate the retractable holder before having read and understood all notes on the safe and proper use.
• Keep the operation manual for future reference.
• Operate the retractable holder only in trouble-free condition.
• In addition, observe laws, regulations, guidelines and standards applicable in the operator’s country and at the site of use.
1.2 Proper use
The RF20H (Extract 810 and 820) retractable holder is attached to tanks or piping. A sensor is inserted in the process liquid by the drive unit in order to measure chemical or physical properties. The procedure is controlled automatically and can not be operated manually.
The choice of material properties of holder and equipment depends on the process properties.
The retractable holder should be serviced on a regular basis.
• Establish a service plan adapted to your process.
• Only perform the service, maintenance described in the operation manual!
• Modifications to the holder must be agreed with the manufacturer.
The manufacturer is not liable for any damages resulting from improper or inappropriate use.
1.3 Hazard areas and residual hazards
Retractable holders are connected to tanks and piping that may be under pressure. Leaking of process liquid only occurs in case of negligence and improper operation.
• Prior to commissioning and after every servicing, ensure that all seals and connections are complete and in working order.
• Never remove the lower and top housing cramp screws during operation of the holder.
• Take applicable protection measures prior to touching the holder as parts of the retractable holder may adopt the process temperature.
1.4 Equipment
Only use certified and approved accessories and equipment. Seals Choose material properties
of process seals and O rings according to process medium and cleaning liquid(s).
Observe swelling ability and acid
and alkaline resistance of seal material.
Sensor Choose a suitable sensor and
observe information in chapter 8 “technical specifications”.
Pressure air Filter (40 µm), clean and deoil
compressed air.
Ensure that the pressure is between
4 and 6 bar.
Cleaning Choose cleaning liquid and
liquid/ detergent according to process, detergent holder, and seal material and
dispose it an appropriate way.
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1.5 Safety equipment
Position The retract protection prevents the “service” insertion rod from retracting without
sensor in the process as this would cause a leakage of process liquid.
• The sensor can only be installed/ removed when the holder is in the “service” position.
• Disabling the retract protection is considered as negligence.
Position In the “measuring” position the “measuring” sensor is immersed in the drive unit.
• You cannot remove the sensor.
• Trying to remove the sensor in the “measuring” position is considered as negligence!
Protection You may adjust the protection cage cage at the end of the insertion rod in
order to protect the sensor from mechanical impacts.
1.6 Staff
Qualifications Leave installation and servicing of
the retractable holder to trained staff!
Protective The operation staff must wear clothing goggles and applicable protective
clothing during commissioning and servicing works.
Accident Observe work safety laws and
prevention regulations applicable in the regulations operator’s country and at the site of
use!
1.7 Disposal
Observe regulations and rules for waste disposal applicable in the operator’s country and at the site of use.
1.8 Symbols and pictograms
Pictograms and symbols are used in
the operation manual to provide better orientation.
DAN GE R!
The safety note with the DANGER! signal
indicates the risk of personal danger and high material damage in case of failure to observe the instructions.
CAU TI ON!
The safety note with the CAUTION! signal
indicates the risk of material damage in case of failure to observe the instructions.
Indicates an important note!
This sign indicates that the operations
should be carried out in the specified order.
1.9 Reliable Use in Explosive Atmospheres
For a reliable use under potential explosive conditions please regard the following remarks:
• Avoid electrostatic charges on the top of the drive
unit. Wipe with an antistatic cloth only.
• The electrostatic charge must be taken into
account in case of parts not made of a conductive material. This applies particularly for non­conductive fluids.
• The sensor must conform to Directive 94/9EC and
the ambient temperatures must be observed.
• It must be ensured that the compressed air does
not contain a potentially explosive atmosphere.
• It must be ensured that the extension and
retraction movements of the sensor do not damage the connection.
• The various temperature classes of the different
materials must be observed.
• A liquid potential equalisation must be ensured.
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2. Product description
2.1 RF20H (Extract 810 and 820) automatic retractable holder
Components
1. Pneumatic connections 1-4
2. Top housing cramp
3. Drive unit
4. Lower housing cramp
5. Process connection
6. Sensor
7. Insertion rod with protection cage
8. Cleaning port “IN”
Fig. 1: Retractable holder
Variations
Retractable holders are attached to tanks or piping by an applicable process connection. In order to comply with the various process properties the RF20H (Extract 810 and 820) retractable holder is fabricated of stainless steel, Alloy C-22 or plastic. You can further choose between different process and cleaning ports, sealing materials, and sensors.
Drive
Compressed air is supplied via the pneumatic connections on the drive unit. The drive unit inserts the insertion rod in the process medium up to the maximal insertion depth. For safety reasons this is only possible with a sensor installed.
9. Cleaning port “OUT”
10. Cleaning chamber
Service
Cleaning, rinsing and calibration of the sensor is possible while the process is running. For this purpose the holder must be moved to the “service” position. Another pneumatic position signal feedback is given when the final position is reached. In the “service” position the insertion rod seals the cleaning chamber against the process to prevent leakage of process liquid. The required liquid is introduced into the cleaning chamber via the cleaning port “IN” and subsequently drained via the cleaning port “OUT”.
Measuring
When reaching the final position of the “measuring” position, the control receives a pneumatic position feedback signal. In this position the sensor head is immersed in the drive unit and cannot be removed. The sensor measures the chemical or physical properties of the process liquid.
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2.2 Process integration
24V DC
Air 4-6 bar
7
Process Control System
RF20M
(Exmatic 450)
Transmitter
Cleaning solution
Fig. 2: Process flow
Control
The RF20H (Extract 810 and 820) retractable holder can be operated by the automatic control EXmatic. It optimally matches the functions of the holder.
Transmitter
The retractable holder inserts a sensor in the process liquid transmitting its measuring results to a transmitter.
Drain
Process control
The external control and the transmitter can be connected to a process control unit. The measuring and cleaning intervals are then controlled automatically according to the measuring results.
Pressure Temperature
The choice of the applicable holder is subject to the pressure and temperature conditions of the process. The retractable holder of stainless steel or Alloy C-22 can be used for a pressure of up to 16 bar and the plastic model up to 10 bar according to the temperature. The process temperature should be between -10° and 140°C.
Observe pressure and temperature charts in chapter 8!
Installation position
The operation of the holder is generally possible in any position. The reliability of the measuring results depends on the properties of the selected sensor. The sensor should be connected in a position less than 15º to the hozizontal plane.
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3. Delivery
3.1 Package contents
The retractable holder is inspected at the factory and delivered ready for installation in a packaging providing optimal protection for the holder.
Package contents:
• RF20H (Extract 810 and 820) holder
• hexagon key 2.5mm
• 4 spare screws M 4 x 8 (DIN 912)
• 2 spacer for sensors
• operation manual
For the RF20H (Extract 810) S.S./Hastelloy holder you will additionally receive a material certificate
Store the holder in the packaging. This
ensures optimal protection until the installation.
3.2 Checking the delivery
Before approving the retractable holder
for installation the following should be ensured:
• packaging and device are in apparent
good order.
• the data plate of the retractable holder
corresponds to the specifications on the order.
EXtract 810
4404-FPM-255-D50-G14-PN SN: 8000008 P:16 bar T:140ºC
made in germany www.e-p-e.com
Fig. 3a: Data plate Alloy C-22
Fig. 3b: Data plate Plastic
In case of further inquiries please directly contact your dealer.
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4. Installation
4.1 Preparing the system
Ensure that
• Sufficient working space for operation of the retractable holder is available.
• The process is shut off.
• Tank and tubing are pressure-free, empty and clean.
• Connection flange and process connection of the retractable holder fit together.
• The process seal is positioned on the connection flange.
• Ensure that there is no potentially explosive atmosphere
4.2 Preparing the holder
The holder must be in the “service”
position!
• The insertion rod (process end) is completely inserted in the cleaning chamber.
4.4 Adjusting the protection cage
A protection cage is fitted to the lower end of the insertion rod and can be adjusted with the flow direction. The symbol on the drive unit cylinder indicates the position of the opening in the insertion rod. If the symbol is parallel to the flow direction the insertion rod is fully flown through. If the symbols are vertical to the flow the sensor is fully protected from direct flow. The insertion rod can be adjusted in any intermediate position.
A
flow direction
B
Fig. 4: “service” position
4.3 Installing the holder
Prior to installation, ensure this:
• The system is prepared (chapter 4.1).
• The holder is prepared (chapter 4.2).
How to install the holder:
• Position retractable holder on process seal.
• Tighten process connection.
A) Sensor maximally streamed B) Sensor minimally streamed
Fig. 5: Protection cage
Fig. 6: Symbol
Ensure that:
• The process is shut off.
• Tank piping and tubing are pressure-free, empty and clean.
• There is no potentially explosive atmosphere
DAN GE R!
Leakage of process liquid when
housing cramp is opened during running process!
Burns or tissue destruction depending on
process liquid property.
• Stop process!
• Tanks and tubing must be pressure-free!
How to adjust the protection cage:
• Loosen screws of lower housing cramp.
• Rotate drive unit and adjust symbol in flow direction.
• Tighten screws of lower housing cramp.
IM 12B06K05-E-E
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