UWT RF 3000 Series Technical Information/Instruction Manual Download Page 40

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Level limit switch

Series RF 3000

Technical Information / Instruction manual

page

Open the housing lid

Remove the field wiring cables

Remove the two fastening screws

Take out the electronic board, remove cable ties and internal wires

Mount a new electronic board in reverse sequence

CAUTION:
•

Observe right sequence of internal probe wires

•

Obeserve to reconnect the internal grounding wire

•

Opening the lid (cover): see safety notes on page before

•

Hazardous Locations: The unit must have always an electronic board inserted and conneted to the probe. If the

electronic board is not connected to the probe, the probe acts as an isolated capacitance. The risk of static charge
and thus possible explosion is present.

Change of electronic board

Electronic
(view from
below)

Internal
probe
wires

Cover plate

Internal
grounding
wire

Fastening
screw

Cable tie

Maintenance

RFnivo

RF 3000 f

gi241014

Summary of Contents for RF 3000 Series

Page 1: ...s 13 Options 13 Mounting 14 Electrical installation 20 Qickstart 22 Advanced proramming 29 Probe modifications 35 Assembly Remote version FM FMc Control Drawing 36 Troubleshooting 37 Maintenance 39 Notes for use in Hazardous Locations 41 Disposal 43 Subject to technical change We assume no liability for typing errors All dimensions in mm inch Different variations than specified are possible Please...

Page 2: ... the product Risk of electric shock WARNING A failure to observe the necessary precautions can result in death serious injury and or considerable material damage This symbol is used when there is no corresponding caution symbol on the product CAUTION A failure to observe the necessary precautions can result in considerable material damage Safety symbols In manual and on product Description CAUTION...

Page 3: ...ation of the device Function The unit detects the capacitance between the probe and the container wall The performance allows to use the unit in a wide range of even difficult applications combined with simple handling Active shield technology The powerful active shield technology allows to ignore material build up on the probe Even the influence of conductive build up on the probe is electronical...

Page 4: ...mand detector with short length observe max load Empty detector with short length observe max load Application in down pipe observe max load Inactive length to bring active probe to required level Inactive length and sliding sleeve for adjustable height Full detector rope version Empty detector rope version observe max load Inactive length due to long mounting nozzle A B D F H J I G E C K RFnivo 1...

Page 5: ...x d Flameproof explosionproof Aluminium Aluminium Aluminium Technical data Dimensions Plastics PA6 reinforced no electronics inside electronics inside Remote version Remote version exemplified with RF 3100 Angle bracket Remote cable Spezial triaxial cable max length 20 m 65 ft min bending radius 50 mm 2 RFnivo 1 2 3 4 5 6 7 8 9 10 11 12 RF 3000 f gi241014 5 ...

Page 6: ...extension Rope version Shortest length Process connections Active shield RF 3100 Standard version Only units with rod version are available with EHEDG Certificate On rod versions with EHEDG Certificate the length L is increased by 25 mm 0 98 Thread G 3 4 NPT 3 4 Thread except 3 4 Thread EHEDG EHEDG version Shortest length EHEDG version Inactive extension RFnivo 1 2 3 4 5 6 7 8 9 10 11 12 RF 3000 f...

Page 7: ...ge Technical data Dimensions Thread Flange Rod version Shortest length Rod version Inactive extension Rope version Inactive extension Rope version Shortest length Process connections Active shield RF 3200 Heavy Duty version RFnivo 1 2 3 4 5 6 7 8 9 10 11 12 RF 3000 f gi241014 7 ...

Page 8: ...Technical data Dimensions Rod version Shortest length Rod version Inactive extension Rope version Inactive extension Rope version Shortest length Thread Flange Process connections Active shield RF 3300 High temperature version RFnivo 1 2 3 4 5 6 7 8 9 10 11 12 RF 3000 f gi241014 8 ...

Page 9: ...lution degree 2 inside housing Electronics Universal voltage Relay DPDT Power supply 21 230 V 50 60 Hz or DC 10 incl 10 of EN 61010 Max ripple of power supply 7 Vss at DC sypply Installed load max 1 5 VA or 1 5 W Signal output Floating relay DPDT AC max 250 V 8 A non inductive DC max 30 V 5 A non inductive Display 4 digit LCD Display of actual measured capacitance signal output state and self diag...

Page 10: ...or rope version Material Stainless steel 1 4301 304 1 4305 303 or 1 4404 316L 1 4401 316 for rope Probe isolation ceramic Probe gaskets graphite Thread G 1 1 DIN 228 NPT 1 1 tapered ANSI B 1 20 1 Flanges according to selection 1 4541 321 or 1 4404 316L All material food grade Sound level max 40 dBA Overall weight ca Standard housing de housing d housing Basic weight Active probe length L1 Inactive...

Page 11: ...quired Max range max sensitivity 3 100 pF 0 5 pF 3 400 pF 2 pF Spark protection Robust build in protection against static discharge of the bulk material Features of bulk material Min DK depending on selected probe length L1 and probe diameter See tables on page 25 and 32 Max mechanical load RF 3100 Rod version A 125 Nm B 20 Nm Rope version 4 kN tensile load RF 3200 Rod version A 525 Nm B 90 Nm Rop...

Page 12: ...ial passing the sensor element Transport and Storage Transport Observe the instructions as stated on the transport packaging otherwise the products may get damaged Transport temperature 40 80 C 40 176 F Transport humidity 20 85 Transport incoming inspections must be caried out to check for possible transport damage Storage Products must be stored at a dry and clean place They must be protected fro...

Page 13: ...irective 1935 2004 EC Pressure Equipment Directive 2014 68 EU The units are not subject to this directive because they are classified as pressure keeping equipment and do not have a pressurized housing see Art 1 clause 2 1 4 The units are designed and manufactured in accordance to the Pressure Equipment Directive The unit is NOT intended for use as a equipment part with safety function Art 1 claus...

Page 14: ...the process connection after mounting Chemical resistance against the medium Materials of construction are chosen based on their chemical compatibility or inertness for general purposes For exposure to specific environments check with chemical compatibility charts before installing Temperature range The range of the ambient and process temperature of the device must be observed Mechanical load The...

Page 15: ...s in mm inch suggested values in brackets values to be adhered bindingly Metal metal sealing The support must be plane and without any gap No PTFE sealing tape or similar is allowed to be in between Fixing torque 100 Nm The quality of the welding with the container wall must be according to the respective regulations and EHEDG requirements of Doc 9 e g gaps transitions surface finish Mounting EHED...

Page 16: ...Use of inactive length CORRECT Extensive material build up Use of inactive length WRONG Active probe inside socket WRONG Active probe inside material build up Observe distance to active probe Active probe Active probe Active probe Active probe WRONG Active probe inside intersection between cylindric and conical part of the silo material may stay when silo is empty RFnivo 1 2 3 4 5 6 7 8 9 10 11 12...

Page 17: ...ilos The inner or outer PE terminal must be connected to reach a grounding reference Further mounting requirements Observe distance to material flow filling Protective angle recommended depending on mechanical load and abrasion of the material Switching point With proper calibration the signal output switches when the active probe is covered by material RFnivo 1 2 3 4 5 6 7 8 9 10 11 12 RF 3000 f ...

Page 18: ...robe inside socket WRONG Active probe inside intersection between cylindric and conical part of the silo material may stay when silo is empty Grounding reference with non metal silos The inner or outer PE terminal must be connected to reach a grounding reference Further mounting requirements Observe distance to material flow filling Empty detector Do not mount above the center of the silo outlet d...

Page 19: ...als the cable and that it is tight danger of water intrusion Cable glands that are not used have to be locked with a closing element A strain relief must be provided for the field wiring cables when the device is installed with the factory provided cable glands Conduit system In case of using a conduit system with NPT thread instead of a cable gland the regulations of the country where the unit is...

Page 20: ...ble with ferrule with or without plastic sleeve 0 25 to 1 5 mm AWG 24 to 14 2 conductors with same cross section solid 0 2 to 0 75 mm flexible 0 2 to 0 75 mm flexible with ferrule without plastic sleeve 0 25 to 0 34 mm Cable glands Dust and Gas Hazardous Locations Installation according to the regulations of the country where the product is installed Not used entries have to be closed with blankin...

Page 21: ...lameproof explosion proof enclosure with a conduit system In a conduit system single electric conductors are installed in a certified pipe system This pipe system is in a flameproof explosion proof construction as well The flameproof explosion proof enclosure and the pipe system needs to be sealed from each other by a certified flameproof seal of a type d or explosion proof of a type XP This seals...

Page 22: ...Level limit switch Series RF 3000 Technical Information Instruction manual page Quickstart RFnivo 1 2 3 4 5 6 7 8 9 10 11 12 RF 3000 f gi241014 22 ...

Page 23: ...l measured capacitance in pF Actual signal output states uncovered probe u or covered probe c Resolution is 0 1 pF 100 pF or 0 5pF 100 pF If values are 100 pF a dot behind the number means 0 5 pF e g 100 means 100 5 pF Note If the actual measured capacitance is higher than electronic can measure 400pF with sensitivity setting 2 pF or 100 pF with sensitivity setting 1pF the unit will state 400c or ...

Page 24: ...der Quickstart menu When the unit is in Measurement mode press MENU button for 3 sec to enter in Quickstart menu Note If Code is displayed a Lock Code is required Set the code number with the arrow buttons and confirm with the Menu button Then press again the Menu button for 3 sec to enter in Quickstart menu Press for 3 sec to return to Measurement mode Press for 1 sec to store setted value and ju...

Page 25: ...en uncovered and covered probe is present a higher sensitivity can be selected 1 pF or 0 5 pf This is not possible if remote version with remote cable length 10 m 33 ft is installed outdoors temperature drift For higher change of capacitance and evt excessive buildup the sensitivity can be reduced 4 pF or more Calibration procedure see page 26 Calibration with uncovered and covered probe This meth...

Page 26: ...ng calibration the display states CAL the red LED is blinking Wait until calibration is finished ca 10 seconds Then display states the actual measured capacitance followed by u for Probe uncovered Note If Code is displayed a Lock Code is required Set the code number with the arrow buttons and confirm with the Menu button Then press again the CAL button for 3sec to start calibration If other statem...

Page 27: ...pacitance as stated in the display for covered probe 5 Set Sensitivity Calculate the capacitance difference between uncovered and covered probe Set sensitivity as follows Quickstart Menu item D Horizontal mounting Vertical mounting rope version Capacitance difference uncovered covered Sensitivity Capacitance difference uncovered covered Sensitivity 0 8 1 5 pF 1 5 3 pF 3 6 pF 6 15 pF 15 23 pF 23 38...

Page 28: ...menus will not change Data storage of last valid calibration values If power supply is switched off the last valid calibration values are stored and are still valid when power is switched on again General items The unit allows to test the internal electronics and the external connected signal evaluation Test procedure In Measurement mode Start the test by pressing the TEST button for 3 seconds Not...

Page 29: ...Level limit switch Series RF 3000 Technical Information Instruction manual page Advanced programming RFnivo 1 2 3 4 5 6 7 8 9 10 11 12 RF 3000 f gi241014 29 ...

Page 30: ...omfortable display and menu Procedure for Manual calibration see page 32 to 34 G OFF ON Manual calibration ON OFF If set to ON Menu items H K L appear Menu items D Sensitivity in Quicksart Menu and F Auto recalibration are no more valid and will be hidden Push button calibration is no more possible if CAL button is pressed the display states G ON H LO HI Low High Sensitivity range Low sensitivity ...

Page 31: ...es not influence the functionaly of the measurement If a failure is detected the display states ERR the red LED is on and the relais is set to de energized Electronic is defect and must be changed N xxx pF Actual calibrated Switchpoint covered uncovered If OR or UR is stated there is no valid calibration see Troubleshooting page 37 P xxx pF Actual calibrated Switchpoint uncovered covered If OR or ...

Page 32: ...list for dielectric constant DK of different materials Calibration with uncovered and covered probe This method is most safe since it sets the switchpoint in the middle between uncovered and covered probe This ensures the max distance to both uncovered and covered probe and thus ensures the max tolerance against e g material buildup It is required for lower DK values which give a lower change of c...

Page 33: ...ance is displayed This gives an indication at which capacitance the output will change from covered to uncovered If the output has once changed to uncovered and shall change back to covered the value must be decreased by the setted Hysteresis Menu item L If the actual measured capacitance is close to the limits of what the electronic can measure 400 pF with sensitivity setting Low or 100 pF with s...

Page 34: ...ween capacitance of uncovered and covered probe as follows Switchpoint covered uncovered uncovered 1 0 5 x covered 2 uncovered 1 1 Capacitance uncovered probe see step 2 above 2 Capacitance covered probe see step 3 above With Low sensitivity range Advanced Menu item H If the difference between uncovered and covered probe is smaller than 4 pF set either to High sensitivity or use a more sensitive p...

Page 35: ...al load traction from bulk material and reduced stability of a rope if it is not made from one piece Rod version Active probe Rope version Active probe Modifications on units with explosion approvals Hazardous Locations are not permitted Consult factory Modifications may change the technical data mechanical stability Never do modifications on other than the active part of the probe This will destr...

Page 36: ...open to avoid that the wires are beeing twisted Note Inside the threaded bush is a seal ring which seals the tube to the threaded bush 6 Tighten the cable gland on the tube 7 Fasten the fixing screw Tube Plug Mating plug Mating plug Threaded bush Threaded bush Cable gland Fixing screw Fixing screw All cable glands used for the remote cable must be closed tightly to reach ingress protection The cab...

Page 37: ...t probe is unvovered Check if Probe is defect or defect incorrect probe wiring UR red blinking Under Range Actual measured capacitance is lower than 3 pF Calibration not possible Probe is defect or defect incorrect probe wiring The signal output relay will be de energized G ON red blinking CAL button pressed with Manual calibration setted to ON Push button calibration is not possible If Push butto...

Page 38: ...red 2 Unit not properly calibrated Recalibrate 4 Excessive material build up on active probe Increase distance to wall longer inactive length Change position Recalibrate with less sensitivity 4 Defect or incorrect probe wiring Check probe wiring see below Signal output states uncoverered while material is above the probe The actual measured capacitance 1 is less than the actual calibrated Switchpo...

Page 39: ...erved Cleaning agent must comply with the materials of the unit chemical resistance Mainly the lid sealing cable gland and the surface of the unit must be considered The cleaning process must be done in a way that The cleaning agent cannot enter into the unit through the lid sealing or cable gland No mechanical damage of the lid sealing cable gland or other parts can happen Units with EHEDG certif...

Page 40: ...t the internal grounding wire Opening the lid cover see safety notes on page before Hazardous Locations The unit must have always an electronic board inserted and conneted to the probe If the electronic board is not connected to the probe the probe acts as an isolated capacitance The risk of static charge and thus possible explosion is present Change of electronic board Electronic view from below ...

Page 41: ...roval according to the ATEX directive is based are designed for atmospheric conditions and do not automatically cover deviating pressure conditions Thus an ATEX type approval issued in accordance with this directive only covers atmospheric pressure This applies to all manufacturers A deviating operating pressure can be assessed and approved by an expert for the respective application Regardless of...

Page 42: ...L Db Max Surface temperature EPL Da Temperature class EPL Gb 20 70 C 4 158 F 1 40 70 C 40 158 F 2 40 60 C 40 140 F 3 80 C 176 F 120 C 248 F T200 120 C 248 F T4 120 C 248 F 120 C 248 F T200 120 C 248 F T4 250 C 482 F 250 C 482 F T200 250 C 482 F T2 445 C 833 F 4 445 C 833 F 4 T200 445 C 833 F 4 T1 4 Remote version electronic enclosure Ambient temperature range Max Surface temperature EPL Db Tempera...

Page 43: ...on manual page Disposal The product consists of materials which can be recycled details of the used materials see chapter Technical data Mechanical data Recycling must be done by a specialised recycling company RFnivo 1 2 3 4 5 6 7 8 9 10 11 12 RF 3000 f gi241014 43 ...

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