USER'S GUIDE - Control Components
Contents
1. 5 404 6 ESitron 0 100 0 12 30Vdc 4 20mA Power Supply Electrical connection using the Galvanic Isolator for a PLC with an active input card 2 3 SC404 G SSitren dn ES A 24Vdc 10 Galvanic Isolator Ground Active PLC input card Electrical connection using the Galvanic Isolator for a PLC with a passive input card SC404 G ESitron 24Vdc 10 Power Supply Galvanic Isolator Passive PLC input card PLC Ground Wiring Diagram Different wiring scenarios for the G2 electronics The G2 offers a built in galvanic isolator In this case a separate one is not necessary supply Connecting directly into the power 0 100 96 4 20mA 24Vdc 10 Ground Power Electrical connection for a PLC with an active 4 20mA input card Supply 24Vdc 10 Electrical connection for a PLC with a passive input car2. Terms amp Conditions Sitron s TERMS amp CONDITIONS Design Sitron reserves the right to make any alterations or changes necessary to improve the Products correct defects or to make the Products safer without prior notice or consent by Buyer Pricing All stipulated amounts shall be in US dollars and all prices quoted are valid for thirty 30 days from date of offer unless otherwise stated Safety and Instructions The Buyer ensures that it and all its representatives and agents will observe all safety and technical instructions in Sitron s operating manuals catalogs or other directions or instructions either written or verbal Delivery and Freight All goods are sold FOB point of shipment Brasil Transportation to the destination is the Buyer s responsibility and Buyer alone shall bear the cost of freight optional or other shipping requirements and or insurance Sitron shall not be liable for loss or damage to the Products after said Products are delivered to or received by the shipper carrier and all risk of damage orloss shall immediately pass to Buyer Receiving unloading and storing of Products will be the responsibility of the Buyer Buyer also accepts that courier may choose to return Products to Sitron if any local taxes or duties are not paid by Buyer at point of delivery Buyer must make any and all claims for corrections or deductions within ten days of the delivery of the Products Shipment Delays Si
3. Sitron USER S GUIs Installation Operation Maintenance Instructions 5 404 Capacitive Level Sensor Control Components Pty Ltd Ph 61 2 9542 8977 ROL Fx 61 29542 7978 2 help ccezy com au Ed Web www ccezy com au Sitron Contents Introduction 2 2255 Rod EFE Lake and ea 4 Models amp 5 Wiring x ee ce oe eed E and oad godes 6 Mounting Note ua chm E Red p A Rea 11 InstallatiOli io eit REESE 12 Calibration cus aee Escort ca dte dal cu a re a RA DR a DR 16 ael MP 18 Technical Specifications 19 Trouble 0 1 20 Ordering 21 Terms amp Conditions 22 NOOS eaoaai Rd RE 24 SC404 Capacitive Level Sensor The SC404 is a capacitance continuous level transmitter with an integrated electronics module mounted within the housing This 2 wire loop powered unit provides a 4 20mA output Setup and calibration is achieved with a zero and span adjustment which works best when starting with an empty tank to set the zero and then filling it to set the span This flexible level measurement device works well in many industrial processes and process media
4. Span end of scale 1 Power Supply 2 Power Supply 3 Ground 24Vdc 4 20mA Wiring Diagram Different wiring scenarios for the N1 electronics Important There are several types of PLC configurations and some of them have the negative terminal grounded internally In this case a galvanic isolator must be used along with the probe to distinguish both signals negative and ground Connecting directly into the power supply 0 100 12 30Vdc enum 4 20 mA Power Supply Electrical connection using the Galvanic Isolator for a PLC with an active input card 24Vdc 1095 Galvanic Isolator Ground Active PLC input card Electrical connection using the Galvanic Isolator for a PLC with a passive input card 24Vdc 10 Power Supply Galvanic Isolator Passive PLC input card PLC Ground Sitron USA Phone 516 935 8001 Fax 800 516 1656 Sitron Wiring Diagram Different wiring scenarios for the G1 electronics Connecting directly into the power supply
5. acquires no right title or interest to this intellectual property whether in whole or in part Errors Sitron reserves the right to correct all typographical or clerical errors or omissions in its prices or specifications 23 5 Sitron Sitron Brasil R Baronesa de 83 S o Paulo SP 01231 001 T 5511 3825 2111 5511 3825 2171 Sitron USA 1800 Prime Place Hauppauge NY 11788 PH 516 935 8001 FX 800 516 1656 www sitron com BRASIL vendas sitron com USA Other Countries info sitron com
6. any other warranty condition or guarantee if the total price for the Products or the payment of Services rendered has not been paid by the due date for payment The Buyer must make alltools resources or personnel available to help Sitron to diagnose the defect without any back charge In absence of Buyer s cooperation in this regard there shall be no liability under the above Warranty Sitron s liability under this warranty shall be limited to repair or replacement at Sitron s option of such defective Products FOB factory upon proof of defect satisfactory to Sitron Warranty does not include transport Return Goods No goods may be returned without Sitron s permission and an RMA number Sitron assumes no responsibility for return shipments made without permission In issuing credit for such shipments Sitron reserves the right to charge a restocking fee dependent on Sitron s ability to recondition and resell the returned equipment Insurance The responsibility for insuring the Goods after the risk in them has passed to the Buyer shall be that of the Buyer Confidential Information All drawings specifications and technical information provided by either Buyer or Sitron shall be treated as confidential and shall not be disclosed to anyone other than those who require it as part of the fulfillment of the order Buyer agrees that the designs and or any other related material provided are and remain Sitron s exclusive property and that the Buyer
7. d 4 20 Ground PLC 24Vdc 10 Power Supply Active PLC input card Passive PLC input card PLC Sitron USA Phone 516 935 8001 Fax 800 516 1656 Sitron Mounting Note Materials that are conductive will cause a short circuit between a bare stainless steel probe and the tank wall For that reason we recommend the use of Teflon or other types of insulating coatings on the rod s surface Fig 1 Material build up also affects the accuracy of RF capacitive measurements and therefore additional adjustment to the probe s sensitivity is recommended in applications where build up is a concern Fig 2 Housings must also be compatible with the requirements for wash down wet and or dusty environments Hazardous environments may require the housing to be certified In addition the active probe might need to be intrinsically safe or have an intrinsic safety barrier Fig 3 Bare Rod Coating PTFE or Halar Conductive Medium Steel Tank NOS The electronic circuitry of the probe performs several functions such as rectifying and filtering the incoming power generating the radio frequency signal measuring the changes in current flow analog signal generators and display meters The circui
8. d Signal Fluctuating Verify the grounding Signal under 20mA Sensitivity to low Adjust sensibility again Reference is incorrect Lack of linearity Add a Reference Sheath the rod Coating on the rod is damaged Send back for repair Sitron USA Phone 516 935 8001 Fax 800 516 1656 20 Sitron Order Information Zi MODEL SC404 1 2 3 4 3 4 14 25 OTHER PROCESS CONNECTION TYPE esp FLANGE ANSI 150 CARBON STEEL PAINTED FLANGE ANSI 150 316 SS FLANGE ANSI 150 ELES FLANGE ANSI 150 304 SS TRI CLAMP OTHER sPECIFY COATING none HALLAR COATED EEE NYLON 11 COATED PTFE TUBED UP TO 120C PTFE TUBED CABLE OTHER SPECIFY PTFE TUBED FOR HIGH TEMP UP TO 200C TYPE OF ROD OR CABLE La RIGID ROD 1 2 12 7mm or 5 8 16mm 316SS RIGID ROD REFERENCE ROD 1 2 12 7mm or 1 4 6 3mm 316SS fa STEEL CABLE 6 0mm c ROD and SHEATH 31655 INSERTION LENGTH SPECIFY smaru NYLON SMALL ALUMINIUM LARGE NYLON LARGE ALUMINIUM ELECTRICAL CONNECTION 1 2 CABLE GLAND W 1 2 BSP CABLE GLAND 3 4 BSP 1 2 CABLE GLAND W 1 2 FEM CABLE GLAND W 3 4 NPT OPTIONS Medium Temp 50mm 316SS Neck 80 120C High Temp 100mm 316SS Neck 80 150C
9. eter clockwise to increase current Turn the potentiometer counter clockwise to decrease current Fig 4 7 If the current is lower than 20mA after fully turning the Span Potentiometer clockwise it is necessary to increase the sensitivity by selecting the next level of the switch Sub and Gain If the current still remains lower than 20mA continue on to the next level until you achieve 20mA 8 With the 20mA signal adjusted it is best to re adjust the Zero Drain the tank back down to the starting level and re adjust if necessary the minimum level to 4mA one more time After this stage set up is complete Fig 1 Fig 2 Fig 3 Fig 4 Fig 5 Sitron USA Phone 516 935 8001 Fax 800 516 1656 Calibration YO YO On Zero Span 0 0 Zero Span Zero Span Dogo Calibration The dielectric value varies according to the product temperature pressure rod s length and shape of the tank Because of these variations the parameters of the capacitive probe need to be adjusted according to each application as well as each tank While the SC404 can be tested on a bench the results of calibrating it will not be the same as calibrating the unit within the actual tank that you plan on installing it in The SC 404 has 3 stages of se
10. including a variety of liquids powders and pastes The SC404 is made with 31655 rigid rods or 316SS cables coatings are required for conductive mediums and can also be made with a secondary reference rod or reference sheath built into the process connection The wide range of applications for RF analog level measurement probes such as liquids pastes solids and granules requires attention in selecting the correct configuration and installing it in the proper location To cater to all applications Sitron s probes are offered with different designs and features Features Wide range of applications industries i e water oils corrosives solids powders grains etc Accurate and reliable measurement No moving parts Rugged construction Can operate at high temperatures and pressure A Functions on conductive as well as non conductive medias Sitron USA Phone 516 935 8001 Fax 800 516 1656 Introduction Sitron Models and Dimensions Housing Types N1 G1 130mm 89mm 129mm 76mm 8 3 g 8 3 128mm Mounting Options for SC404 Simm Extended necks for medium temperature up to 120 C and high temperature up to 150 C SC404 W SC404 W SC404 w Cable SC404 Standard Reference Sheath Reference Rod also w reference cable Note Minimal insertion for the SC404 is 1 2 meter Process C
11. is entitled to reasonable cancellation charges including but not limited to labor material and other related expenses Sitron USA Phone 516 935 8001 Fax 800 516 1656 2 Sitron Terms amp Conditions Termination Fee Schedule Order entered but not released for manufacturing 10 Order in any stage of production 75 Order complete and ready for shipment 100 Warranty Sitron warrants its product against manufacturing defects in material and workmanship when installed in applications approved by Sitron for a period of one year from the date of original shipment unless otherwise stated in writing by Sitron Sitron is not responsible for damage to Sitron s Products or other equipment or products because of improper installation or misapplication of the Products by Buyer Installation or startup of Sitron s equipment must be performed under the guidelines set forth in Sitron s instruction manuals wiring diagrams etc or performed under the direct supervision of Sitron s field technicians or Sitron s authorized Sales Representatives in order to be covered by Sitron s warranty Sitron shall be under no liability in respect to any defect from fair wear and tear willful damage negligence abnormal working conditions failure to follow Sitron s instructions whether written or verbal misuse modification or alteration or attempted repair of the Goods without Sitron s approval Sitron shall not be liable under the above warranty or
12. m Scratching the coating could interfere with the probe performance When cleaning the rod use a soft brush or any other similar object Sitron USA Phone 516 935 8001 Fax 800 516 1656 Sitron Technical Specifications Housing 1 Housing 2 Application Operating Voltage Current Consumption Adjustment Sensitivity Range Frequency Oscillation Output Accuracy Repeatability Level Indication Electrical Connection Process Connection Wetted Parts Enclosure Material Max Pressure Operating Temperature Class Protection 1 Housing G1 Housing G2 il Continuous Level Measurement for Liquids and Solids 12 30Vdc Housing N1 G1 24 1096 Housing G2 N2 amp N1 G1 w 150420 22mA max Zero amp Span Potentiometer 100 to 5500pF 400 kHz 4 20mA 0 5 1mm Cable gland 1 2 conduit entry or M12 connector 3 4 to 1 1 2 BSP or NPT Flange or Sanitary Connections 316 Stainless Steel PTFE Glass filled nylon Aluminum 290 PSI 20 Bar 14 to 248 F 10 to 120 IP 65 No power supply Trouble Shooting Solution Verify power supply No signal Inadaquate connection Verify the polarity of the power supply Probable short circuit Verify that the rod is coated for conductive mediums Signal over 22mA Sensitivity to high Adjust sensibility again Lack of signal from referance ro
13. nsitivity and that can be adjusted by a selective Switch Each stage has 3 subdivisions 1 2 3 forthe SC404 and 4 subdivisions 1 2 3 4 for the SC404 G to be combined with the selective switch Check the values on the chart below according to your application Capacitive Range forthe SC404 G Gain Sub 1 1600 5500 1 3750 to 5500 2 2500 to3750pF 3 1600 to 2500pF 2 400pFto1500pF 1 900 to 1500pF 2 600 to 900pF 3 400 to 600pF 3 100pF to 330pF 1 225 to 330pF 2 150 to 225pF 3 100 to 150pF 4 25pF to 150pF 1 150 to 100pF 2 100 to 70pF 3 70 to 25pF Sitron Aluminum G2 2 0 0 Sub ES f Handling Probes Seal the thread with Teflon tape before installation Fig 1 Do not turn or handle by the housing Fig 2 When tightening the sensor use only use the 316S S hexagon fitting to achieve a seal do not twist with the body of the sensor Fig 3 The probe should not be dropped or suffer any Fig 3 impact or fall that could damage the electronics or the coating of the probe Fig 4 and 5 Periodic visual inspection of the probe is required to check for corrosion or deposit build up If deposits are found clean the sensor to ensure optimum performance Care should be taken when handling and installing probes with coated rods to avoid scratching the
14. od or sheath If the probe is mounted without this parallel reference within a cylindrical tank that is mounted on its side the output signal will not be linear Please consult one of our applications engineers if you have further questions Fig 1 correct Fig 2 incorrect Single Rod Adjustment 4 20mA It is recommended that an multimeter be connected according to the figure below fig 5 to monitor the current value during the calibration Prior to calibration it is recommended that both potentiometers are reset Turn both potentiometers counter clockwise until they stop or approximately 20turns Fig 1 1 Drain the tank to minimum level Zero or 4 2 Select the Gain switch 1 2 3 and Sub positions 1 2 or 3 It is recommended to begin with Gain switch 1 and Sub position 1 Fig 2 3 Use the Zero potentiometer to set the current value for the actual level to 4mA Turn the potentiometer clockwise to increase current Turn the potentiometer counter clockwise to decrease current If the adjustment wasn t possible alter the Sub and Gain position and try in adjust the minimum value 4mA through the Zero Potentiometer Fig 3 4 After calibrating the minimum value 4 fill up the tank to maximum level 100 level 5 The Sub and Gain switches should be in the same position as adjusted to 4mA 6 Use the Span potentiometer to set the current value for the actual level to 20mA Turn the potentiom
15. onnections Threaded Tri Clamp Flange EE 3 4 1w 1 BSP 1v de 11777710 1 Yo 2 D _ Rubber Seal 2 RF _ Process Connection 2 n F SC404 with 1 Housing A Adjust Sensibility Gain B Adjust Sensibility Sub gain C Adjust Zero begin scale D Adjust Span end of scale 1 Power Supply 2 Power Supply 3 Ground 12 30Vdc 4 20 Wiring Diagram A B Q C D SC404 122778 DDD 2 SSitron SC404 with G1 Housing A Adjust Sensibility Gain B Adjust Sensibility Sub gain C Adjust Zero begin scale D Adjust Span end of scale 1 Power Supply 2 Power Supply 3 Ground 12 30Vdc 4 20 ZZ I 123 5 404 6 D D D ON Sitron USA Phone 516 935 8001 Fax 800 516 1656 6 Sitron Wiring Diagram Galvanic Isolator ISO420 111mm 1 Probe 2 Probe 11 Power Supply 12 Power Suppy 83 5 SC404 with G2 2 Housing and internal 150420 A Adjust Sensibility Gain B Adjust Sensibility Sub gain C Adjust Zero begin scale D Adjust
16. stallation The tank must be free from turbulence or vortices throughout use If this is not possible we highly recommend a stilling well or sheath Fig 1 correct Fig 2 incorrect Ensure that mounting position does not interfere with any obstructions wthin the vessel or tank Fig 1 correct Fig 2 incorrect Installation When installing the SC404 with cable and reference be sure that they are well connected to the bottom of the tank and that it has no slack Fig 1 correct Fig 2 Incorrect The mounting location of the probe should stay clear away from the point where the medium enters this will avoid false reading from the sensor while being filled Fig 1 correct Fig 2 Incorrect Isolato The recommended distance of installation of the probe from the internal wall is a minimum of 500mm and from the tip of the pendulum to the bottom of the tank is 100mm this will prevent a false signal and possible build up between the wall and probe Fig 1 correct Fig 2 Incorrect If the cable is secure to the bottom of the vessel Fig 2 it must be isolated and the vessel is steel it must be isolated so that it does not create a short E circuit Sitron USA Phone 516 935 8001 Fax 800 516 1656 14 Sitron Installation Rod Reference Rod Level In order to achieve a linear output signal the main rod of the probe must have a parallel reference either to the tank or to a secondary reference r
17. tron has no control over the length of time shipments may be held at customs etc For this reason Sitron commits only to a shipment date not a delivery date Buyer shall not hold Sitron liable for claims resulting from delay in shipment except in cases where these terms are accepted in writing by Sitron Acceptance of delivery of Products by Buyer shall constitute a waiver of all claims for delay Partial Deliveries While Sitron strives to deliver all orders on time and complete Sitron reserves the rightto make partial deliveries when necessary Changes Any changes initiated by the Buyer which affects the products specifications quantities ordered delivery schedule method of shipment or packing or delivery location must be made in writing and signed by both parties In this case Sitron reserves the right to adjust the pricing and or delivery of the order which will be agreed to by both parties before further work is performed on the order Any such requests will be priced according to the scope of changes and the status of the current order Customer must sign and return or acknowledge approval of drawings along with any Purchase Order If approval drawings are not returned with order the delivery date may be held or pushed back until Customer has acknowledged approval Cancellation Any cancellation of the Contract by the Buyer shall be effective only if made in writing and accepted in writing by the Sitron In such a case Sitron
18. try is provided with potentiometer adjustments for setting sensitivity that is located in the housing of the probe These adjustments give an added level of fine tuning which enable our customers to control the probe s sensitivity with greater accuracy Fig 3 Variation in current input power supply to the probe will affect the output Therefore a stable power supply should be available Fig 4 Fig 4 Build up get M pose em 11 Installation Fig 1 500mm When installing the probe either directly to the tank or utilizing a connection the capacitance probe should be mounted on the top of the tank never on the side or angle so that the rod stays parallel to the tank wall Fig 1 correct Fig 2 Incorrect The mounting location of the probe should stay clear away from the point where the medium enters this will avoid false reading from the sensor while being filled Fig 1 correct Fig 2 Incorrect 100mm The recommended distance of installation of the probe from the internal wall is a minimum of 500mm and from the tip of the rod to the bottom of the tank is 100mm this will prevent a false signal and possible build up between the wall and probe Fig 2 Fig 1 correct Fig 2 Incorrect Sitron Equip Eletr nicos Ltda Fone Fax 5511 3825 2111 3825 2171 2 5 Sitron In
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