user manual - Automation Products Group, Inc.
Contents
1. JUNCTION BOX APPROVED CONDUIT SEALS AT LOCATIONS 1 2 AND 3 THE CABLE IS POTTED INTO THE SENSOR AND RUNS CONTINUDUSL Y FROM THE SENSOR INSIDE A SEALED CONDUIT THROUGH TER HAZERDOUS AREA AND INTO THE NON HAZERDOUS AREA ENERE IS CONNECTED TO OTHER WIRING INSIDE A JUNCTION BOX Automation Products Group Inc APG APG Providing tailored solutions for measurement applications Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 29 DCU 1104 and DCU 1108 Rev A2 11 06 Specifications DCU 1104 DCU 1108 Operating Range 2 ft to 50 ft 0 6 m 15 24 m Supply Voltage 12 to 30 VDC 24 VDC recommended for maximum performance Outputs oe 4 20mA 2 solid state relays 130 mA max Resolution 0 1 in 2 54 mm ACCURACY irent 0 2596 of range with no temp gradient Sensor Adjustments programmable modes Total Current Draw 180 mA max 24 VDC Transducer Type flat ceramic sealed PVC face Operating Temp 30 to 70 C Internal Temp Compensation yes Sample Rate programmable 0 120 1 sec 1 8 sec in AutoSense mode Beam Pattern 9 off axis Enclosure PVC NEMA 4X IP65 CADIS notes 10 conductor 22 AWG with shield PVC jacketed 6 ft length 1 8 m To order bracket for DCU 11 order BRK 3 ACC 10032. 0 9999 Default 2 00 ft The Out of Range Span will set a certain size window the current reading If the echo received is within this window it will be considered valid and is averaged in the FIFO buffer MODE DESCRIPTION PARAMETERS 9 Loss of Echo Units seconds Delay Range 0 9999 Default 5 This mode sets the delay in seconds before the output will show a loss of echo condition When the DCU 11 does not receive an echo it will hold the last valid condition for the number of seconds entered in Mode 9 When this time has expired the display and trip points will change to their maximum distance reading APG Automation Products Group Inc APG Providing tailored solutions for measurement applications 14 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 DCU 1104 and DCU 1108 Outputs Relay The two relays are fully programmable for BEGIN and END points and their Type of operation The LEDs on the DCU 11 display labeled TRIP 1 and TRIP 2 indicate the status of the normally open relay contacts When the LED is on the relay is energized and the contact is closed AII distance settings will be in the UNITS selected in Mode 1 The relays are rated for 200 mA 24 VDC Switching A C through the relay is not recommended NOTE Outputs do not automatically convert to units used in Mode 1 All outputs must be changed if Mode 1 has been changed MODE DESCRIPTION
3. Dimensions 7 m e 1 2 NPT 3 MPT APG E Automation Products Group Inc APG Providing tailored solutions for measurement applications 30 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 DCU 1104 and DCU 1108 Notes Automation Products Group Inc APG APG Providing tailored solutions for measurement applications sie Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 31 PRODUCTS GROUP INC APG Providing tailored solutions for measurement applications APG Automation Products Group Inc Tel 1 888 525 7300 1 435 753 7300 Fax 1 435 753 7490 e mail sales apgsensors com www apgsensors com Automation Products Group Inc 1025 W 1700 N Logan UT 84321
4. calibrated at the factory Sets an offset for the display Selects the direction of the offset Add or Subtract the offset from the distance before displaying Sets the integer portion of the calibration factor Sets the fractional portion of the calibration factor decimal point is assumed 9999 APG APG Providing tailored solutions for measurement applications Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 27 DCU 1104 and DCU 1108 Mode Sheet continued MODE DESCRIPTION PARAMETERS Rev A2 11 06 EXPLANATION APG 28 24 25 26 27 28 Temperature Compensation Reset Software Version AutoSense Password m Range On Off view Default Off Range No Yes Default No Range 0 1 Default 0 Selects internal temperature compensation for changes in the speed of sound caused by changing temperatures On Off or View sensor temperature Resets the mode parameters to their default values Displays the Software Version Turns on and off the autosense feature 0 off 1 on For factory use only Automation Products Group Inc APG Providing tailored solutions for measurement applications Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 DCU 1104 and DCU 1108 Hazardous Mounting HAZARDOUS AREA NON HAZARDOUS A gt
5. A2 11 06 under the sensor With the correct settings in Modes 7 and 8 the sensor will ignore the agitator when it passes in front of the sensor and stay locked on the level of the product in the tank However if the agitator stops directly below the sensor for a long period of time eventually the number of Out of Range samples in Mode 7 will be exceeded and the sensor could start displaying the top of the agitator To program the DCU 11 for this application the following modes must be set MODE VALUE DESCRIPTION 1 2 Set units to feet because the output is to be displayed in feet 2 0 NOT A SETABLE VALUE Displays the sensitivity of the returning echo 50 or less indicates a good application 3 2 00 Do not set closer than the minimum distance recommended for the DCU 11 sensor 5 4 Sample once every 4 seconds 6 15 Average 15 samples in the FIFO buffer 7 30 Ignore 30 consecutive samples outside the window set in Mode 8 8 5 ft If the tank has some turbulence between 5 ft the DCU 11 will average these readings in If a reading comes back outside the value in Mode 8 5 ft the DCU 11 will ignore this reading 9 120 Loss of echo will show in output after 120 seconds 10 4 ft Begin Trip 1 at 4 feet from sensor 11 18 ft End trip 1 at 18 feet from sensor 12 2 Use the hysteresis near type of gate to keep the pump on while pumping the level down 13 3 ft Trip 2 begins at 3 ft from the sensor 14 20 f
6. E 3 give a good stable PUMP ON Br THIGH reading In most tank level Lb WM 4 applications we 20 can have high averaging Mode 6 and slow TE sample rate times qs Mode 5 because e lnc the levels change ci CRMUME slowly To TANK DEPTH calculate the time required to completely fill the averaging buffer take the sample rate times the number of samples averaged For example if the sample rate is 5 00 seconds and the averaging is 10 it would take 50 seconds to fill the buffer resulting in a 50 second average The Out of Range samples Mode 7 are the number of successive samples outside of the window specified in Mode 8 that the sensor will ignore After this number of successive samples have been discarded the ones following will be sent to the averaging buffer This allows the sensor to ignore objects that move into the area between the sensor and the target for short periods of time To figure the time period that the sensor will ignore these objects before locking onto them take the sample rate Mode 5 times the number of Out of Range samples Mode 7 An example of where this would be used would be an agitator in a tank Every time the agitator goes around it passes directly Automation Products Group Inc APG APG Providing tailored solutions for measurement applications t Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 23 DCU 1104 and DCU 1108 Rev
7. The DCU 11 contains an internal thermistor which measures temperature By turning temperature compensation ON the effects of temperature changes may be reduced by 50 or better MODE DESCRIPTION PARAMETERS 24 Temperature Range OFF ON Temp in C Compensation Default OFF Selects internal temperature compensation for changes in the speed of sound Set to ON OFF or VIEW sensor temperature EXAMPLE Temperature Compensation is turned ON by pressing the VALUE UP button when in Mode 24 Pressing the VALUE UP button one more time will display the present temperature of the sensor in Fahrenheit Place this mode in the ON position if temperature compensation is desired For the DCU 11 temperature sensor to operate properly it must be shielded from direct sun radiation Because the temperature sensor is internal to the DCU 11 it requires several minutes to react to air temperature changes Reset MODE DESCRIPTION PARAMETERS 25 Reset Range No Yes Default No Reset the mode parameters to their factory preset values default EXAMPLE When the DCU 11 is powered up NO is loaded in Mode 25 This saves the user selected modes into the DCU 11 If the factory preset values are wanted press the VALUE UP button to load YES in Mode 25 If YES is entered the DCU 11 will perform a reset when the mode UP or mode DOWN key is pressed loading all the modes with the default parameters Automation Products Group Inc APG APG Providin
8. as temperature humidity or chemical atmosphere These environments can be compensated for by using a calibration factor which calibrates the reading to match the actual distance MODE DESCRIPTION PARAMETERS 20 Distance Offset Units Mode 1 Range 0 9999 Default 0 Sets an offset for the display when measuring distance to a level MODE DESCRIPTION PARAMETERS 21 Offset Polarity Range NEG POS Default NEG Selects the direction of the offset Adds or subtracts offset to reading MODE DESCRIPTION PARAMETERS 22 Calibration Range 0 9999 above the Default 1 Decimal Point Sets the integer portion of the calibration factor MODE DESCRIPTION PARAMETERS 23 Calibration Range 0 9999 below the Default 0 Decimal Point Sets the fractional portion of the calibration factor Decimal point is assumed Automation Products Group Inc APG APG Providing tailored solutions for measurement applications she Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 19 DCU 1104 and DCU 1108 Rev A2 11 06 to be in the far left position So a value of 53 would correspond to 0 0053 whereas 5300 would correspond to 0 5300 EXAMPLE The Calibration Factor is used to bring the displayed reading in line with the measured distance To obtain the measured distance measure from the target to be detected to 5 in behind the DCU 11 face 5 in behind the DCU 11 face is the electrical zero point
9. for Trip 1 Relay output Sets the END point for Trip 1 Relay output Selects the output type for Trip 1 Sets the BEGIN point for Trip 2 Relay output Sets the END point for Trip 2 Relay output ahd Automation Products Group Inc APG Providing tailored solutions for measurement applications Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 Mode Sheet continued MODE DESCRIPTION PARAMETERS DCU 1104 and DCU 1108 EXPLANATION 15 16 17 18 19 20 21 22 23 Trip 2 Type 4mA 20mA 4mA Trim 20mA Trim Offset Offset Polarity Calibration Above the Decimal Point Calibration Below the Decimal Point Automation Products Group Inc Range 0 7 0 near exclusive 2 hysteresis near 3 far 4 inclusive 5 hysteresis far 6 disable 7 loss of echo Default 0 Units Mode 1 Range 0 9999 Default 3 00 Units Mode 1 Range 0 9999 Default 4 00 Range 0 9999 Default 5200 Range 0 9999 Default 9208 Range 0 9999 Default 0 Range neg pos Default neg Range 0 9999 Default 1 Range 0 9999 Default 0 Selects the output type for Trip 2 Sets the end point for the 4 mA analog limit Sets the end point for the 20 mA analog limit Fine tunes the 4 mA analog output calibrated at the factory Fine tunes the 20 mA analog output
10. of the sensor 1 Point Calibration The calibration factor is determined by dividing the actual distance measured by the displayed distance Enter this number in the calibration Modes 22 and 23 Then the displayed readings should match the measured distance 2 Point Calibration If a more precise calibration is required a two point calibration should be used This is accomplished by using the linear equation of Y AX B where Y measured distance X DCU Il reading A Multiplier B Offset The multiplier A can be determined by taking ultrasonic readings at two known distances and dividing the difference of the known distances D by the difference of the ultrasonic U readings A D D U U where D far known distance U Ultrasonic reading at D D close known distance U Ultrasonic reading at D Enter this multiplier in Modes 22 and 23 The multiplier can then be entered in the above equation to calculate the offset B D A U The offset should be entered using Modes 20 and 21 APG E Automation Products Group Inc APG Providing tailored solutions for measurement applications 20 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 DCU 1104 and DCU 1108 Utilities Temperature Compensation As air temperature changes so does the speed of sound This change can cause 0 1 drift in distance for every F change Mode 24 allows compensation for this change
11. to an object the stronger the returning echo will be Therefore as the distance increases the object requires better reflective characteristics to return a sufficient echo Size A large object will have a greater surface area to reflect the signal than a small one therefore a large target will be detected at a greater distance than a small target The surface area recognized as the target is generally the portion closest to the sensor Angle The inclination of the object s surface facing the ultrasonic sensor affects the reflectivity of the object The portion perpendicular to the sensor returns the echo If the entire surface is at a great enough angle the signal will be reflected away from the sensor and no echo will be detected Generally a target at an angle greater than 5 degrees off perpendicular will not be detected APG E Automation Products Group Inc APG Providing tailored solutions for measurement applications 6 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 DCU 1104 and DCU 1108 Installation 1 Installation use and maintenance shall be in accordance with the manufacturer s instructions the National Electrical Code and any applicable local codes 2 Electrical equipment connected to associated apparatus should not use or generate more than 250Vrms 3 Tampering or replacement with nonfactory components may adversely affect the safe use of the system
12. APG Automation Products Group Inc APG Providing tailored solutions for measurement applications 8 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 DCU 1104 and DCU 1108 Wiring RED seisis 10 30 VDC 24 VDC recommended BLACK POWER SUPPLY GROUND YELLOW ANALOG GROUND ORANGE 4 20 mA ANALOG OUTPUT BLUE 4 RELAY 1 COMMON GRAY RELAY 1 NORMALLY OPEN PURPLE RELAY 2 COMMON BROWN RELAY 2 NORMALLY OPEN GREEN CLOCK SYNCHRONIZATION WHITE DIGITAL OUT SHIELD TERMINATE AT POWER SOURCE Cable is a 10 conductor with shield 22 AWG 6 ft 1 83 m length Ground and Analog ground are connected internal to the DCU 11 Shield is not connected in the DCU 11 and should be grounded at the power source Wiring for Clock Synchronization The DCU 11 has the capability to synchronize the transmit pulses of multiple sensors When GREEN WAG LOOK ENE sensors are mounted in close proximity to one another the sensors GREEN HE LIE PAE should be synchronized to help prevent cross talk J between sensors Wiring for a Digital Out The digital output is a pulse width signal which corresponds to the distance being detected by the DCU 11 sensor The digital signal is typically used in conjunction with a APG ACC 1007 or ACC 1008 remote readout Automation Products
13. Automation Products Group Inc APG APG Providing tailored solutions for measurement applications t Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 7 DCU 1104 and DCU 1108 Rev A2 11 06 Installation The DCU 11 sensor should be mounted so that it has a clear sound path to the level monitored Mount the sensor away from tank walls and inlets The path should be free from obstructions and as open as possible for the 18 beam pattern 9 off axis Follow the guidelines mentioned in Understanding Ultrasonics earlier in this manual When using a stand pipe to mount the sensor above the tank the stand pipe should be seamless and no longer than 4 in to provide a smooth path for the sound waves to propagate into the tank Seams from couplers nipples or gaskets can cause erroneous echoes and degrade the sensors performance The DCU 11 can be mounted in a coupler or flange by using the 3 in threaded case It can also be mounted using a Uni Strut mounting bracket The minimum detection range of the DCU 11 is 2 ft The sensor should be mounted to ensure the target does not come closer than the minimum range or erroneous readings may result To mount the DCU 11 for Class 1 Division 2 Groups A B C and D see the Hazardous Mounting section of this manual E Stand Pipe Top of Tank 10 45 CUT Soft gasket material is recommended with flange mounting
14. CU 11 display and control buttons can be accessed by unscrewing the sealed cap on the rear of the sensor The membrane display has two lights indicating the status of Trip Points 1 and 2 The LED display shows distance measurements The display is also used when programming to display the individual modes and their values The DCU 11 has four programming buttons VALUE UP VALUE DOWN MODE UP and MODE DOWN They are accessed similar to a digital watch To cycle forward through the 27 modes hold down the MODE UP button To cycle backwards through the modes hold down the MODE DOWN button To select a mode press the MODE UP or MODE DOWN button until the desired mode is displayed Press either the VALUE UP or VALUE DOWN button once to view the selected mode setting To change the selected mode setting hold down the VALUE UP or VALUE DOWN button until the desired setting is displayed To STORE or SAVE the desired change press the MODE UP or MODE DOWN button The display will return to displaying the distance measurement The value is also permanently stored in the EE memory and will not be lost when power is turned off If a button is not pressed for 2 minutes the display will turn off to reduce power requirements Pressing any button will return the display to showing it s distance reading A list of the 27 modes is located on the DCU 11 MODE SHEET provided with this manual Automation Products Group Inc APG APG Providing tailored solut
15. Group Inc APG APG Providing tailored solutions for measurement applications xin Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 9 DCU 1104 and DCU 1108 Wiring for a Relay Output When switching a highly capacitive or inductive load a swamping diode should be used This will protect the internal relay from possible damage and prevent electrical noise from being introduced to the sensor which could result in false readings DCU 11 Wiring Diagram AC O 24vDC 24VDC f 24VDC S rabid COIL wamping Diode RELAY E x i tly m Alarm Brown N O Gray N O Purple Common Blue Common o 9 LJ APG Power Supply b ACC 1008 5 24VDC Neg Solis Red 10 30VDC 0 Volts Black Neg White White Digital out 4 Length of time for signal to travel from transducer to target and return to transducer The width 1 0 Device Orange 4 20mA Yellow 4 20mA Rev A2 11 06 LIAN varies and is proportional to the target distance APG Automation Products Group Inc m APG Providing tailored solutions for measurement applications 10 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 DCU 1104 and DCU 1108 Programming The D
16. Operator s Manual DCU 1104 and DCU 1108 Rev A2 11 06 Doc 9002660 APG Automation Products Group Inc APG Providing tailored solutions for measurement applications Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com E mail sales apgsensors com DCU 1104 and DCU 1108 Rev A2 11 06 Table of Contents UU IO 4 FT TM cc 3 Tato IE con E M NUMEE NEIN ea 4 Understand EFRON Fait nae hd 3 DRS OR CH 7 WITING m EE 9 PPV PUTIN MET Eians 11 DPT EMT c P 12 Pi MM 13 OUPUIS Suroso eea Men eU Ma DRM Gud R ME EM 13 Calibra tl M 19 uui 21 LU SECTION Emplois dogs Oe NUR Gender Ur 23 TOG SCOT e C E PM 25 Hazardous M untino cos coaius secu pni bb te Poe pna PR a t 29 OCH ICOMONG 30 APG E Automation Products Group Inc APG Providing tailored solutions for measurement applications 2 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 DCU 1104 and DCU 1108 Warranty and Warranty Restrictions APG warrants its products to be free from defects of material and workmanship and will without charge replace or repair any equipment found defective upon inspection at its factory provided the equipment has been returned transportation prepaid within 24 months from date of shipment fro
17. PARAMETERS 10 Begin Trip 1 Units Mode 1 Range 0 9999 Default 3 00 Sets the Begin point for Trip 1 Relay Output MODE DESCRIPTION PARAMETERS 11 End Trip 1 Units Mode 1 Range 0 9999 Default 4 00 Sets the End point for Trip 1 Relay Output MODE DESCRIPTION PARAMETERS 12 Trip 1 Type Range 0 7 0 near 1 exclusive 2 hysteresis near 3 far 4 inclusive 5 hysteresis far 6 disable 7 loss of echo Default 0 Selects the output type for Trip 1 Automation Products Group Inc APG APG Providing tailored solutions for measurement applications I Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 15 DCU 1104 and DCU 1108 Rev A2 11 06 MODE DESCRIPTION PARAMETERS 13 Begin Trip 2 Units Mode 1 Range 0 9999 Default 3 50 Sets the Begin point for Trip 2 Relay Output MODE DESCRIPTION PARAMETERS 14 End Trip 2 Units Mode 1 Range 0 9999 Default 4 50 Sets the End point for Trip 2 Relay Output MODE DESCRIPTION PARAMETERS 15 Trip 2 Type Range 0 7 0 near exclusive 2 hysteresis near 3 far 4 inclusive 5 hysteresis far 6 disable 7 loss of echo Default 0 Selects the output type for Trip 2 APG Automation Products Group Inc APG Providing tailored solutions for measurement applications 16 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 DCU 1104 and DC
18. U 1108 Trip Type Explanation ZERO BEGIN END Type O Z On Off Off Near Type 1 On Off lt On T Exclusive of _ OFF _ Type 2 On 7 On lt Hysteresis Near le gt Type 3 lt Off lt On On Far Type 4 pu I edie Inclusive On On lt Type 5 ve E gt Off Hysteresis Far lt off gt Type Trip Point Disable Type 7 Relay remains closed trip light on unless an error is detected in communication loss of echo or loss of power NOTE The Zero line represents the face of the sensor when operating in Distance mode and the bottom of the tank when operating in Tank mode Automation Products Group Inc APG APG Providing tailored solutions for measurement applications uiu Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 17 DCU 1104 and DCU 1108 Rev A2 11 06 Analog The 4 20 mA analog output can be configured anywhere over the range of the DCU 11 The 4 mA end point is entered in mode 16 and the 20 mA end point in mode 17 The 4 and 20 mA values are calibrated at the factory but can be fine tuned by Modes 18 and 19 The DCU 11 will digitally create a straight line between the two points for the analog output The resolution of the output will be the same as the displayed resolution To fine tune the analog output a current meter should be connected between the yellow and orange wires The sensor should be aimed a
19. e is the zone from the sensor to a point where the first echo will be accepted Because of the physical properties of an ultrasonic sensor objects cannot be detected closer than 2 ft from the end of the transducer This distance varies according to how much energy is being transmitted Mode 4 and the installation Ensure this parameter is entered after APG Automation Products Group Inc APG Providing tailored solutions for measurement applications 12 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 DCU 1104 and DCU 1108 the Units Mode 1 have been set The blanking distance can also be used to ignore unwanted targets close to the sensor such as welds seams pipe fittings or gaskets MODE DESCRIPTION PARAMETERS 4 Pulses Units 2 42 Khz soundwaves Range 1 20 Default 20 The Pulses mode controls how many pulsed soundwaves are transmitted in each ultrasonic burst The DCU 11 sends out a transmission burst of pulses and measures the time it takes for the echo to return Up to a certain point the more pulses that are sent in a burst the stronger the returning echo When detecting a soft target in damping environments increase the strength of the echo by increasing the number of pulses In acoustically active environments small enclosed areas or hard surface areas decrease the number of pulses in order to decrease the energy transmitted and reduce multiple echoes Filte
20. g tailored solutions for measurement applications zip Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 21 DCU 1104 and DCU 1108 Rev A2 11 06 Software MODE DESCRIPTION 26 Software Version Mode 26 displays the software version for the DCU 11 The value corresponds to the operating version and the approximate date of manufacture MODE DESCRIPTION PARAMETERS 27 Autosense Range 0 1 0 Manual user controls Sensitivity and Pulses 1 Autosense sensor controls Sensitivity and Pulses Autosense mode sets control of the sensitivity and pulses to the sensor The DCU 11 will automatically change the sensitivity to match the application MODE DESCRIPTION 28 Password Mode 28 is used to access factory adjustment modes in the sensor APG Automation Products Group Inc APG Providing tailored solutions for measurement applications 22 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 DCU 1104 and DCU 1108 Lift Station Example A 20 ft deep lift station requires that a pump turn ON when a level is closer than 4 ft to the DCU 11 The pump must stay on until the level drops to 18 ft from the DCU 11 An alarm relay is to be energized under normal operation and should open for failure in power communication invalid readings high level above 3 ft from sensor or loss of echo Setting the averaging in Mode 6 at 10 to 20 samples will 4
21. ions for measurement applications si Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 11 DCU 1104 and DCU 1108 Rev A2 11 06 Operation MODE DESCRIPTION PARAMETERS 1 Units Range 1 3 1 inches 2 feet 3 meters The first thing to set up on the DCU 11 is the Units to be Displayed The Units Mode is used to select the type of measurement and setup units in which you will operate The units will also determine the resolution of the display and the outputs The resolution is inches 1 feet 01 and meters 01 NOTE All modes must be set using the units in Mode 1 MODE DESCRIPTION PARAMETERS 2 Sensitivity Units Range 0000 9999 The sensitivity setting adjusts the level of gain amplification as a percentage of maximum that is applied to the return signal To avoid amplifying unwanted noise set the sensitivity to the minimum value that will allow the target to be reliably tracked through the full range of environmental conditions It is often wise to add another 10 as a buffer NOTE FOR VIEWING ONLY IN AUTOSENSE MODE mode 27 The first two digits on the display will read the highest sensitivity the sensor can operate at effectively The last two digits display the currently operating sensitivity level of the sensor The numbers displayed are used to help with installation MODE DESCRIPTION PARAMETERS 3 Blanking Units Mode 1 Range 2 50 ft Default 2 00 The blanking distanc
22. m factory THE FOREGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER WARRANTIES NOT EXPRESSLY SET FORTH HEREIN WHETHER EXPRESSED OR IMPLIED BY OPERATION OF LAW OR OTHERWISE INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE No representation or warranty express or implied made by any sales representative distributor or other agent or representative of APG which is not specifically set forth herein shall be binding upon APG APG shall not be liable for any incidental or consequential damages losses or expenses directly or indirectly arising from the sale handling improper application or use of the goods or from any other cause relating thereto and APG s liability hereunder in any case is expressly limited to the repair or replacement at APG s option of goods Warranty is specifically at the factory Any on site service will be provided at the sole expense of the Purchaser at standard field service rates All associated equipment must be protected by properly rated electronic electrical protection devices APG shall not be liable for any damage due to improper engineering or installation by the purchaser or third parties Proper installation operation and maintenance of the product becomes the responsibility of the user upon receipt of the product Returns and allowances must be authorized by APG in advance APG will assign a Return Material Authorization RMA number which
23. must appear on all related papers and the outside of the shipping carton All returns are subject to the final review by APG Returns are subject to restocking charges as determined by APG s Credit Return Policy Automation Products Group Inc APG APG Providing tailored solutions for measurement applications si Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 3 DCU 1104 and DCU 1108 Rev A2 11 06 Introducing Thank you for purchasing the DCU 11 Programmable Ultrasonic Sensor These sensors combine a versatile range of features to handle even the toughest measuring challenges in tank and environmental monitoring and control Sensor features include Total Programmability Built in display for easy setup and distance readings Rugged PVC housing for harsh environments with polyurethane encased electronics for moisture shock and vibration resistance Microprocessor controlled with analog and relay outputs PVC enclosed ceramic transducer for use in wet or dry applications Distance range of 2 ft to 50 ft a 3 5 L 1 2 NPT 12 5 3 NPT h APG Automation Products Group Inc APG Providing tailored solutions for measurement applications 4 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 Understanding Ultrasonics Ultrasonic sensors measure distance u
24. ring MODE DESCRIPTION PARAMETERS 5 Sample Rate Units Seconds Range 0 120 1 1 8 in AutoSense mode Default 1 The sample rate or time between ultrasonic bursts can be adjusted to achieve the reaction time needed for the application Typically product levels change slowly requiring a slow sample rate 1 8 seconds MODE DESCRIPTION PARAMETERS 6 Averaging Units Samples Range 1 50 Default 10 Averaging sets the number of samples that will be averaged in the first in first out FIFO average buffer The DCU 11 will take readings at the rate determined by Mode 5 Therefore a setting of 10 in Mode 6 with a 1 second sample rate would result in a 10 second average updated once each second Automation Products Group Inc APG APG Providing tailored solutions for measurement applications she Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 13 DCU 1104 and DCU 1108 Rev A2 11 06 MODE DESCRIPTION PARAMETERS 7 Out of Range Units Samples Samples Range 1 200 Default 5 This mode is used in conjunction with Out of Range Span Mode 8 to set an effective window for valid readings Setting the Out of Range Samples to 10 would require that a target be detected 10 times in succession outside of the window Mode 8 before the sensor will recognize it as a new valid target and enter it into the FIFO buffer MODE DESCRIPTION PARAMETERS 8 Out of Range Units Mode 1 Span Range
25. sing a transducer to send out ultrasonic bursts Each burst contains a series of 1 20 pulsed sound waves that emit in the shape of a cone reflect off the target and are received by the sensor The time required for the sound burst to travel to and from the target is converted into a distance measurement by the sensor Ultrasonic sensing is affected by several factors including the target surface distance size and angle The following considerations will help ensure the best possible target conditions Surface detection area beam spread DCU 1104 and DCU 1108 low sensitivity and pulses high sensitivity and pulses The ideal target surface is hard and smooth and perpendicular to the face of the transducer This surface will reflect a greater amount of signal than a soft sound wave absorbent surface A target with poor sound wave reflection characteristics will reduce the operating distance of the sensor and decrease its accuracy N soo VY GOOD VN E 80 ds l j surface distance BETTER BETTER tr i i I INCORRECT N b a ti J angl CORRECT rf F od Automation Products Group Inc APG Providing tailored solutions for measurement applications Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 5 APG DCU 1104 and DCU 1108 Rev A2 11 06 Distance The shorter the distance from the sensor
26. t Trip 2 ends at 20 ft because any signal greater will indicate a loss of echo or communication 15 4 Any signal higher than 3 ft or lower than 20 ft will cause the alarm relay to open 24 ON Turn temperature compensation on for best accuracy APG E Automation Products Group Inc APG Providing tailored solutions for measurement applications 24 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 Mode Sheet MODE DESCRIPTION PARAMETERS DCU 1104 and DCU 1108 EXPLANATION 1 Units 2 Sensitivity 3 Blanking 4 Pulses 5 Sample Rate 6 Average 7 Out Of Range Samples 8 Out of Range Span Automation Products Group Inc APG Providing tailored solutions for measurement applications Range 1 3 1 inches 2 feet 3 meters Default 2 Units Range 0000 9999 Units Mode 1 Range 2 0 to 50 ft Default 2 00 Units Pulses Range 20 Default 20 Units Seconds Range 0 120 1 Default 0 120 Units Samples Range 1 200 Default 10 Units Samples Range 1 200 Default 5 Units Mode 1 Range 0 9999 Default 2 00 Select the units to be displayed and used in setup NOTE Set Mode 1 first before any other modes FOR VIEWING ONLY The first two digits display highest operating sensitivity and the last two digits display current sensitivity level Sets a dead zone in front of the transd
27. t a target outside the 4mA distance setting Mode 16 The meter should read near 4 mA If the output requires adjustment go to Mode 18 then press either the Value Up or Value Down button until the meter reads 4 mA The same can be done for the 20 mA setting using Mode 19 4 20 mA calibration will be lost upon resetting the sensor MODE DESCRIPTION PARAMETERS 16 4 mA distance Units Mode 1 Range 0 9999 Default 3 00 ft Sets the 4 mA distance MODE DESCRIPTION PARAMETERS 17 20 mA distance Units Mode 1 Range 0 9999 Default 4 00 ft Sets the 20 mA distance MODE DESCRIPTION PARAMETERS 18 4 mA Trim Range 0 9999 Default 5200 Fine tunes the minimum current sourced on the analog output MODE DESCRIPTION PARAMETERS 19 20 mA Trim Range 0 9999 Default 2 9208 Fine tunes the maximum current sourced on the analog output APG E Automation Products Group Inc APG Providing tailored solutions for measurement applications 18 Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com Rev A2 11 06 DCU 1104 and DCU 1108 20 ma 4 ma Zero Point mode 16 mode 17 Max Distance Zero Point mode 17 mode 16 Max Distance Calibration For most open air applications the factory set calibration should be correct Variations between the distance measured by the DCU 11 and the actual distance are caused by environmental conditions such
28. ucer where echoes are ignored The minimum dead zone is required for the transducer to change from a transmitter to a receiver Sets the number of ultrasonic pulses transmitted in each burst 20 being the strongest transmit setting Sets how fast the DCU 11 samples 1 8 sec in autosense mode Sets the averaging size for the FIFObuffer Sets the number of out of range samples required before updating the average MODE 6 Sets a window of acceptance for the average MODE 6 If a reading is out of this window then it must be followed by MODE 7 more readings before the average can be changed APG Tel 1 888 525 7300 Fax 1 435 753 7490 www apgsensors com sales apgsensors com 25 DCU 1104 and DCU 1108 Mode Sheet continued MODE DESCRIPTION PARAMETERS Rev A2 11 06 EXPLANATION 10 11 12 13 14 APG 26 Loss of Echo Delay Units seconds Range 0 9999 Default 5 Units Mode 1 Range 0 9999 Default 3 00 Trip 1 Begin Trip 1 End Units Mode 1 Range 0 9999 Default 4 00 Trip 1 Type Range 0 7 0 near 1 exclusive 2 hysteresis near 3 far 4 inclusive 5 hysteresis far 6 disable 7 loss of echo Default 0 Units Mode 1 Range 0 9999 Default 3 50 Trip 2 Begin Trip 2 End Units Mode 1 Range 0 9999 Default 4 50 Set the delay in seconds before the output will show a loss of echo condition Sets the BEGIN point
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