sca3802a0600h_03
Contents
1. can be ordered up to 30 m KR 1 OOO KLERQEOOS E A 5 y R 2 K Anivelco gt 4 is Q 4 SC 300 series compact ultrasonic level transmitters USER S MANUAL er Y CE Manufacturer NIVELCO Process Control Co H 1043 Budapest Dugonics u 11 Phone 36 1 369 7575 Fax 36 1 369 8585 E mail sales nivelco com http www nivelco com 2 2 ACCESSORIES User s manual Programming manual CD ROM for versions with HART only 1x Magnetic screwdriver 1x2 nut sealing for SCA 38 with 2 BSP process connection material EPDM 1x1 nut 2 2 1 Optional Accessories SAA 110 Transparent pipe connector for LED status observation SFA 300 flange 2 3 ORDER CODE Mounting Material Output Code 1 BSP or 1 and 2 BSP 4 20 mA relay 1 BSP and 2 NPT 4 20 mA HART relay 1 BSP fast connecting gland PP Mounting bracket 200 mm OK Mounting bracket 500 mm Mounting bracket 750 mm M 2 4 DIMENSIONS SCA 380 SCA 360 3 INSTALLATION ATTENTION Before mounting the unit in its final position make sure that the programming points of the unit are accessible with the supplied magnet the LEDs are clearly visible and the level of the liquid can be changed between its minimum and maximum during the programming session If any of the above conditions are not met the programming should be carried out before mounting the unit in its final position See 52. Programming When mounted on a pipe we recommend the use of the SAA 110 transparent pipe connector that enables on site programming Wind Intense movement of the air may effect the ultrasonic measurement and cause inaccuracy or eventually make it fail Vapors fumes Vapors and fumes of gases may radically reduce the measuring range of the device e g chemicals outdoor tanks under sunshine The structure of the stand off pipe should be rigid the inner rim where the ultrasonic beam leaves the pipe should be rounded Positioning The optimal position of the EasyTREK is between r 0 2 to 0 4 d of the tank This will prevent unwanted interference caused by dome top tanks The sensor face has to be parallel with the surface of the liquid within 2 Obstacles No object should protrude into the ultrasonic beam of the device e g ladder thermometer etc Foam Foam on the surface of the liquid can make ultrasonic measurement difficult or eventually make it fail Mount the device in a location where foam building is minimal or use a stilling pipe Temperature The transmitter should be protected against overheating e g by direct sunshine to avoid inaccurate measurement 4 ELECTRICAL INSTALLATION Power Supply Brown Cee 10 5V 28V AC v Green A 10 5V 40V DC yalow N Curent lour Pink S Output Grey M White Red LED Relay Shielded ECHO T Output Top
3. Thank you for choosing a NIVELCO instrument We are sure that you will be satisfied throughout its use 1 APPLICATION The EasyTREK is a liquid level transmitter measuring by the non contacting ultrasonic principle The transmitter comes with scaleable 4 20 mA output programmable relay and HART communication This intelligent microprocessor based smart level transmitter is suited to measure most liquids under various process conditions The device can be programmed using the supplied magnet or via HART if equipped 2 TECHNICAL DATA 2 1 GENERAL DATA Type SCA 360 0 SCA 380 0 Measuring range Xm Xm 0 35 10m 0 25 6 m Material Total beam angle 5 Ambient temperature 30 C 60 C 30 C 60 C Process temperature 30 C 80 C Pressure absolute 0 3 3 bar 0 03 0 3 MPa Power supply Consumption 10 5 40 V DC 3 6 W or 10 5 28 VAC 4 VA 4 20 mA 600 Q galvanically isolated max 250V Current secondary lighting protection Error indication by the current output programmable 3 6mA Outputs 22mA hold last value Electrical protection Class Ill Ingress protection IP 68 Weight 1 2 kg programmable SPST NO 48 V AC 5 A AC12 Relay For indication of echo loss default or for differential level control Digital communication HART Resolution lt 2 m 1mm 2 5 m 2mm 5 10 m 5 mm Damping Electrical connection 6x0 5 mm shielded cable 7 5 mm length 3 m
4. e 4 mA analogue output to a required min level max distance E factory default Xm max measuring distance Assignment of the 20 mA analogue output to a required max level min distance F factory default Xm min measuring distance Error indication by the current output factory default hold last value Relay switching differential if not programmed the relay is for echo loss indication factory default echo loss indication relay NO Damping factory default 60 sec Note Current output can also be assigned in inverted mode 4 mA 100 20 mA 0 Touch Magnet Programming is only possible if the EasyTREK receives valid echo i e ECHO LED is lit Is the ECHO LED blinking the search for echo is in process In case of Easy TREK with HART communication SCA 3010 4 Touch Magnet Programming is only possible if the transmitter is in the LEV measuring mode factory default Thus the relay switching difference between ON and OFF must be greater than 20 mm Interpretation of LED statuses LED ison LED is blinking O LED is off LEDs are blinking alternatively The left side LED symbol in the programming table below corresponds to the GREEN LED while the right side LED corresponds to the RED LED of the device Green LED RedLED Programming Open up the supplied screwdriver to access the magnet When programming put the magnetic part to one of the s
5. l B EasyTREK in programming mode 2 Place magnet to the symbol A repeatedly to O 10 sec select the required damping O 30 sec O 60 sec 3 Place magnet to symbol B OO Programming completed Note If your process allows it leave the Damping at factory default 60 sec Change it only if your process is fast and the output can not track the level RESET to factory default Place the EasyTREK against a target to obtain valid Echo required for programming eon Indication of programming error by the LEDs Attempted programming blinking twice No Echo Find valid echo Attempted programming blinking three times access denied access code active Access code can be activated through HART only Attempted programming blinking four times EasyTREK not in LEV meas mode RESET the EasyTREK Programming of the relay blinking alternately switch differential too small Set switch differential greater than 20 mm 6 MAINTANCE REPAIR The unit may require occasional maintenance of the sensor face by cleaning its surface especially where sticky adhering liquid may splash on it A thin layer of dirt may not cause any trouble however heavily fuming chemicals may reduce the efficiency of the sensor Cleaning of the sensor face must be carried out in a way that does not harm polypropylene Equipment sent back for repair should be cleaned or sterilized by the User Repairs d
6. t e g the wall Programming relay switch off point the level where the relay becomes de energized Place the EasyTREK at a distance from the target corresponding to the required switch off point Do not forget to check for valid Echo 1 Place magnet to the symbol A EasyTREK in programming mode 2 Place magnet to the symbol B O Programming in progress 3 Hold magnet to symbol B Programming in progress 4 Keep holding magnet to B O Programming of the switch off point 5 Remove magnet when all LEDs are off OO Programming completed Use level in tank or a fix target e g the wall Note To re configure the relay for indication of ECHO LOSS perform a RESET see later that will reset all parameters to default Programming Error indication by the current output Place the Easy TREK against a target to obtain valid Echo required for programming 1 Place magnet to the symbol A EasyTREK in programming mode 2 Place magnet to the symbol B repeatedly to ae i Ant value select the required error indication mode OO mA 3 Place magnet to the symbol A OO Programming completed Note The current output will be according to the selected error indication 3 6 mA 22 mA or the last measured value as long as the error continue to exist Damping Place the Easy TREK against a target to obtain valid Echo required for programming 1 Place magnet to symbo
7. uring or beyond guarantee period are carried out solely by the manufacturer 7 STORAGE CONDITIONS Environmental temperature range 35 60 C Relative humidity max 98 8 WARRANTY All Nivelco products are warranted free of defects in materials or workmanship for a period of two years from the date of purchase Repairs under guarantee are carried out at the Manufacturer s premises The Purchaser is liable for costs of dismantling and re installation as well as transport costs Nivelco shall not be liable for misapplication labor claims direct or consequential damage or expense arising from the installation or use of equipment sca3802a0600h_03 October 2001 Technical specification may be changed without notice
8. view of the neck section 5 Shielding o Junction box Denotation of the color wires Extending the cable Brown Power supply In case of DC power supply the unit is polarity When extending the cable use a junction box Shielding Green Power supply independent of the unit cable and that of the extension cable should be Yellow Relay output The relay is NO type connected and grounded at the end of the extension Pink Relay output Three wire installation is possible in case of DC power cates Grey Current output supply by connecting the GND and the pole of the Extend only wires required for the purpose of the White GND power supply In this case galvanic isolation is not application Shielding To be grounded provided 5 PROGRAMMING After performing electrical installation according to 4 the unit is ready for operation For ultimate temperature compensation accuracy switch on the device 1 hour before programming Programming can be performed in two ways e On site using the liquid level as reflecting surface only if the programming points are accessible on the unit the LEDs are visible and the level of the liquid can be changed between the its minimum and maximum during the programming session e Off site using a flat object as reflecting surface e g table or wall The following features can be programmed using Touch Magnet Programming with the supplied magnetic screwdriver Assignment of th
9. ymbols magnet screwdriver io Make sure that after programming the unit will not be exposed to a strong magnetic field N A or N B according to the programming sequence described below and check the LEDs for their status Q Minimum level 0 empty tank assignment to 4 mA Place the EasyTREK at a distance from the target corresponding to the required minimum level 1 Check for valid echo O Valid echo received transmitter programmable 2 Place magnet to the symbol A EasyTREK in programming mode 3 Hold magnet in place Distance assigned to 4 mA 4 Remove magnet when all LEDs are off OO Programming completed Use level in tank or a fix target e g the wall Maximum level 100 full tank assignment to 20 mA Place the EasyTREK at a distance from the target corresponding to the required minimum distance maximum level Do not forget to check for valid Echo 1 Place magnet to the symbol B EasyTREK in programming mode 2 Hold magnet in place O Distance assigned to 20 mA 3 Remove magnet when all LEDs are off OO Programming completed Use level in tank or a fix target e g the wall Programming relay switch on point the level where the relay becomes energized Place the EasyTREK at a distance from the target corresponding to the required switch on point Do not forget to check for valid Echo tion ned indication 3 Hold magnet to symbol B Use level in tank or a fix targe
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