Specifications, Diagrams in PDF
Contents
1. the setting POWER then the setting VER then the setting RESET Resets the programming to factory default settings YES Resets the programming to factory default settings NO Exits without making changes EXIT Exits VALUES menu and goes back to the top menu Press ENTER to go back to the top menu or press INDEX to loop back through the VALUES menu options HELP MENU Contains contact information for Dwyer Instruments Inc MAINTENANCE amp REPAIR Other than the controls mentioned in this manual there are no user maintenance adjustments or routine servicing required for this product The unit is not field repairable and should be returned to the factory if service is required Disassembly or modifications made by the user will void the warrantee and could impair the continued safety of the product If repair is required obtain a Returned Goods Authorization RGA number and send the unit freight prepaid to the address below Please include a detailed description of the problem and conditions under which the problem was encountered Dwyer Instruments Inc Attn Repair Department 102 Highway 212 Michigan City IN 46360 Copyright 2009 Dwyer Instruments Inc Printed in U S A 6 09 FR M3 443689 00 DWYER INSTRUMENTS INC Phone 219 879 8000 www dwyer inst com P O BOX 373 MICHIGAN CITY INDIANA 46361 U S A Fax 219 872 9057 e mail info dwyer inst com2. A or HOLD Factory default value is 22 mA Unit will resume nor mal operation when echo signal is again received 22 mA Output of 22 mA 21 mA Output of 21 mA 20 mA Output of 20 mA 4mA Output of 4 mA HOLD Output of last known signal is held EXIT Exit without making changes REVERSE MA Sets the transmitter output to be forward or reverse acting Select NORM or REV Factory default is NORM with 4 mA set at the maximum range of the unit and 20 mA set at the end of the blind zone See Figure 7 below NOTE HEIGHT and FILL H must be set before reversing the output NORM 4 mA is set to be the bottom of the tank tank empty and 20 mA is set to be the height the liquid can go in the tank tank full REVERSE 20 mA is set to be the bottom of the tank tank empty and 4 mA is set to be the height the liquid can go in the tank tank full EXIT Exit without making changes ly i Sey H og f H f EMPTY Z f ly ly 1 ly UL2AZZLLLLZZ ZZ ZL Figure 7 Reverse Output Operation HELP Displays a guide to the menu items in this menu Press ENTER to display EXIT Exits OUTPUT menu and goes back to the top menu Press ENTER to go back to the top menu or press INDEX to loop back through the OUTPUT menu options TARGET CAL MENU Target Calibration sets the tank empty and tank full distances for the transmitter output based on the actual level in the tank This is good to use if the tank dim
3. Bulletin L 45 Series ULT Ultrasonic Level Transmitter Viercoid a Series ULT Ultrasonic Level Transmitter provides reliable accurate noncontact measurement of liquid levels Ultrasonic non contact technology offers no moving parts to wear jam cor rode or get coated like contact technologies Mapping software makes effective measuring surface only a 3 diameter column No concerns with ladders pipes or other tank intrusions in the remaining sound cone Unit is FM approved explosion proof making it ideal for use in hazardous locations The ULT features easy programming with 6 digit LCD display and simple menu structure Output range is adjustable with choices of inputting tank dimensions or just fill and empty the tank while calibrating and it automatically scales to levels it senses Window cover allows early viewing of display Failsafe output options and diag nostic capabilities makes the ULT a good choice for critical applications Model Chart Ultrasonic Level Transmitter 24 6 7 5 m 32 8 10 m 2 NPT male process with 1 2 NPT female conduit 2 BSPT male process with M20 conduit Specifications Installation and Operating Instructions 4 9 32 108 74 I j 1 2 NPT o3 21 64 H f 84 53 LAT SPECIFICATIONS Service Compatible fluids Not for use with powder and bulk solids Wett
4. RESSURE DERATING 40 UNACCEPTABLE 30 RANGE 20L ACCEPTABLE RANGE OPERATING PRESSURE PSI 0 1 1 1 L 40 20 0 20 40 60 80 TEMPERATURE C OPERATING PRINCIPLE Ultrasound is sound with a frequency greater than the upper limit of human hearing approximately 20 kilohertz The ULT con tains an ultrasonic transducer and a temperature sensing ele ment The ultrasonic transducer transmits ultrasound wave puls es through air directed towards the material of which the level is desired The ultrasound waves then reflect off of the material as an echo and travel back to the transducer The level of the material is determined by the transit time of the ultrasound wave pulse from the sensor to material and for the echo to come back to the sensor The speed of sound through air is sensitive to the air temperature The ULT uses the temperature sensing element to compensate for air temperature changes The ULT incorporates patented surface processing technology and adaptive signal processing Surface processing technology filters out all signal obstructions that may be in the tank creating an effecting beam diameter of only 3 7 6 cm This beam diam eter is a straight column and not cone shaped like competitor units Adaptive signal processing continuously optimizes sensor power output filtering and environmental noise rejection INSTALLATION Unpacking Remove the ULT from the shipping carton and inspect for dam age I
5. alibration switches CAUTION Hazardous Area Use Plug any unused conduit openings Plug must engage a minimum of 5 threads Use a conduit seal within 18 45 7 cm of conduit entry Disconnect power before opening servicing programming installing or removing The ULT provides two 1 2 NPT female ports for conduit con nection The conduit connection must be made such that con densation is not allowed to enter the sensor housing If neces sary install a conduit breather drain in a separate conduit body to prevent buildup of moisture If nonmetallic conduit is used the protective ground may be connected to the internal ground con nection screw The ULT transmitter is designed as a two wire 4 20 mA device Connection to the board is through a two pin terminal block The circuitry is polarized so the positive must be connected to termi nal 1 and the negative must be connected to terminal number 2 It is recommended that shielded twisted pair wire be used if the potential exists for interference from external noise sources Ground the shield at the case using the internal ground screw and leave the other end of the shield open Do not use the shield as one of the current loop conductors Power Supply The transmitter requires a minimum of 18 Volts DC at its con nection for proper operation and a maximum of 28 Volts Choose a power supply with a voltage and current rating suffi cient to meet this power specification under all op
6. ed Materials Sensor PVDF process connection 303 SS Ranges 24 6 7 5 m 32 8 10 m Accuracy 0 2 of maximum range Resolution 0 079 2 mm Blind Zone Under 8 20 cm Beam Width 3 7 6 cm diameter Temperature Limits Ambient 40 to 140 F 40 to 60 C Process 4 to 140 F 20 to 60 C Temperature Compensation 40 to 140 F 40 to 60 C Pressure Limits 30 psi 2 bar up to 25 C 77 C Above 25 C 77 F rating decreases 1 667 psi per 1 C increase See chart See pressure and temperature chart Power Requirement 18 to 28 VDC 2 wire Output Signal 4 to 20 mA or 20 to 4 mA Two wire Max Loop Resistance 250 Ohms at 24 VDC Electrical Connections Screw terminal Conduit Connection 1 2 NPT female two or M20 Process Connection 2 NPT male or BSPT Enclosure Rating Weather proof meets NEMA 4X explosion proof rated Class Div 1 Groups B C D Class II III Div 1 Groups E F G Mounting Orientation Vertical Failsafe On lost echo after 30 seconds user selectable to 4 20 21 22 mA or last signal Memory Non volatile Display 6 character LCD Units In cm ft m percent Memory Non volatile Programming 4 button Weight 4 0 Ib 1 8 kg Agency Approvals CE FM DWYER INSTRUMENTS INC P O BOX 373 MICHIGAN CITY INDIANA 46361 U S A Phone 219 879 8000 Fax 219 872 9057 www dwyer inst com e mail info dwyer inst com TEMPERATURE P
7. ensions are unknown or if it is desired to fill and empty the tank for precise measurement points Press INDEX to advance to the next menu time Press ENTER to retain the value See Figure 8 below FULL Fill the tank to the full liquid level desired Press ENTER and this level will be saved EMPTY Drain the tank to the empty level desired Press ENTER and this level will be saved HELP Displays a guide to the menu items in this menu Press ENTER to display EXIT Exits TARG CAL menu and goes back to the top menu Press ENTER to go back to the top menu or press INDEX to loop back through the TARG CAL menu options BL Zi D MNR A AE oe HEIGHT FILLH 11 MAX R Z gt f Z Z H Z CZZZZZZZZZZZZZ Figure 8 Target Calibration VALUES MENU SETUP Displays the current programmed setup for the unit This is scrolling data that will return to the VALUES menu after display ing all the parameters Values shown are MEASUR then the setting UNITS then the setting SHOW then the setting HEIGHT then the setting FILL H then the setting SAFE then the setting REV MA then the setting DIAGNOSTICS Displays diagnostic items that may be relevant to the transmitter and its performance in the application This is scrolling data that will return to the VALUES menu after displaying all the parame ters Values shown are RANGE then the setting TEMP then the setting ECHO then
8. erational con ditions If the supply is unregulated make sure that the output voltage remains within the required voltage range under all power line conditions Ripple on the supply should not exceed 100 mV Loop Resistance The maximum allowable loop resistance is dependent on the power supply voltage The maximum loop voltage drop must not reduce the transmitter voltage below the 18 Volt minimum The maximum loop resistance can be calculated using the following equation R _ Vps 18 0 MAX 20mA Where Vps is the power supply voltage Figure 4 Electrical Wiring Diagram SETUP amp CALIBRATION Four buttons are provided for all setup and calibration opera tions All settings are stored in nonvolatile memory so they will not be lost if the power is removed 8888 L INDEX O ENTER O UP DOWN Figure 5 Display and Programming Buttons KEY FUNCTIONS INDEX Pressing the INDEX button advances the display to the next menu item ENTER Pressing the ENTER button for approximately two seconds will end operating mode and enter programing mode In program ming mode press the ENTER button will store the value of menu items once they are changed to a new value UP Pressing the UP button increments a value in programming DOWN Pressing the DOWN button decrements a value in programming UP amp INDEX Pressing the UP and INDEX simultaneo
9. erse mA is used then this will become the 20 mA value FILL HEIGHT Sets the 20 mA value Program as the distance from the HEIGHT normally the bottom of the tank to the 20 mA value desired Factory default is the maximum range of the model minus the blind zone distance of 8 20 cm Use the UP and DOWN buttons to change the value in the length units the unit has been programmed for The programmed value can be any where in the range above HEIGHT The maximum value for FILL HEIGHT is the maximum range of the unit minus the blind zone distance of 8 20 cm The blind zone distance is auto matically subtracted from the FILL HEIGHT value programmed If reverse mA is used then this will become the 4 mA value Y BLIND ZONE 11 A 8120321 aaa 7 ji gt mA Fi A Y a7 Y A 4 mA lt gt A A EMPTY lt gt y Zi H H H ZZ ZZZ I MD A A A Figure 6 HEIGHT and FILL HEIGHT HELP Displays a guide to the menu items in this menu Press ENTER to display EXIT Exits TANK menu and goes back to the top menu Press ENTER to go back to the top menu or press INDEX to loop back through the TANK menu options OUTPUT MENU Press INDEX to advance to the next menu item Press ENTER to retain the value SAFE MODE Sets the output of the transducer for fail safe mode The trans mitter will output the safe mode programmed setting if the trans mitter loses the echo signal Select 22 mA 21 mA 20 mA 4 m
10. f damage is found notify the carrier immediately Materials The ULT may be used to detect level of a variety of materials Since the sensing technology is non contact it is well suited for corrosive coating slurry or sticky media The hazardous approval rating also makes the unit ideal for use with hazardous rated applications Please see the specifications section for haz ardous approval classifications Mounting Location e The process temperature and ambient temperature must be within the specified limits The probe must be located away from tank inlets or chutes where material may fall on the probe during filling or emptying The probe must be located at least 3 7 6 cm away from the tank side wall The probe cannot be used in vacuum applications The probe must be installed vertically and perpendicular to the media surface e Make sure the covers are accessible to allow for programming wiring and ability to see the display DO NOT INSTALL AT AN ANGLE RELATIVE TO THE LIQUID DO NOT INSTALL WITHIN THREE INCHES OF TANK SIDE WALL 7 ESS Se Q DO NOT INSTALL DO NOT INSTALL WITH OBJECTS IN APPLICATIONS IN THE BEAM WITH VACUUM 4 4 Cat 1 FE f VJ La VACUUM VOZZZZZZZZZZZZZZZ Z ZZ m Figure 1 Unsuitable Mounting Locations MOUNTING FITTING Fittings should be selected t
11. hat minimize the installation height of the transmitter so that mounting hardware does not interfere with the acoustic signal If the installation does require a riser then the transmitter may be elevated up to 12 30 cm in a 6 15 cm diameter riser 8 20 cm in a 4 10 cm diameter riser and 3 7 6 cm in a 2 5 cm diameter riser see Figure 2 A stand pipe may be used to dampen turbulence or separate sur face foam Use a minimum 3 diameter pipe and cut to the desired length of the transmitter span with a 45 notch at the bot tom A ventillation hole needs to be created at the top of the pipe within the 8 20 cm blind zone see Figure 3 INNER DIAMETER Figure 2 Riser Mounting 1 H BLIND ZONE VENTILLATION HOLE H 8 203 20 lt gt F a gt aS ao OPERATIONAL RANGE 93 76 20 MINIMUM E E 1 LOWEST LIQUID LEVEL Figure 3 Stand Pipe Mounting ELECTRICAL CONNECTION CAUTION Do not exceed the specified supply volt age rating Permanent damage not covered by the warranty may result This unit is not designed for AC voltage operation NOTE Installation must be made in accordance with local codes and regulations When fishing wire through the conduit connec tion do not allow the wire to touch or press on components on the boards Damage to the circuitry may result Make sure that the wire is routed so it will not interfere with the c
12. making changes UNITS Sets the transmitter display and output unit of measure Select INCHES FEET CM or METER Factory default is INCHES INCHES Display and output will be in inches FEET Display and output will be in feet CM Display and output will be in centimeters METER Display and output will be in meters EXIT Exit without making changes SHOW Sets the transmitter display for distance measure or percent age measure Select DISTANCE or PERCENT Factory default is DISTANCE DISTANCE Display will be in units of distance PERCENT Display will be in percentage of range EXIT Exit without making changes HELP Displays a guide to the menu items in this menu Press ENTER to display EXIT Exits DISPLAY menu and goes back to the top menu Press ENTER to go back to the top menu or press INDEX to loop back through the DISPLAY menu options TANK MENU If the tank dimensions are known these menu item can be used to set the 4 and 20 mA points manually See Figure 6 below Press INDEX to advance to the next menu item Press ENTER to retain the value HEIGHT Sets the 4 mA value Program as the distance from the transducer face to the 4 mA value desired normally the bottom or lowest value of the tank Factory default is the maximum range of the model Use the UP and DOWN buttons to change the value in the length units the unit has been programmed for The programmed value can be anywhere in the range below FILL HEIGHT If rev
13. usly will allow faster increments in a value for programming DOWN amp INDEX Pressing the DOWN and INDEX simultaneously will allow faster decrements in a value for programming MENU SELECTIONS The transmitter has two modes operating and programming In the normal operating mode the transmitter will display the liquid height The unit comes factory calibrated with the output default ed to 4 mA equal to the maximum range and 20 mA equal to the minimum range of the transmitter model In the programming mode the transmitter will display the programming menus and choices When in the programming mode the transmitter will hold the last current value The value will not change until the transmitter is returned to operating mode via RUN in the menu structure To enter the programming mode press and hold the ENTER but ton for approximately 5 seconds Once in programming mode there are the following top menu selections DISPLAY TANK OUTPUT TARGET CAL VALUES HELP and RUN Pressing the INDEX button will increment to the next top menu and press ing the ENTER button will enter the menu for programming changes DISPLAY MENU Press INDEX to advance to the next menu time Press ENTER to retain the value MEASURE Sets the transmitter output Select LIQUID or AIR Factory default is LIQUID LIQUID Output will be the height of the liquid in the tank AIR Output will be the height of the air above the liquid in the tank EXIT Exit without
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