L‐ULS Series ULS Small Tank Ultrasonic Transmitter, Switch and Controller Series ULSS, ULSM, ULSL Manual Dwyer Instruments Inc. 102 Indiana Hwy. 212 (P.O. Box 373) Michigan City, IN 46360 (46361) USA www.Dwyer‐Inst.
INTRODUCTION / TABLE OF CONTENTS Step One Series ULS is an innovative level sensor family that replaces float, conductance and pressure sensors that fail due to contact with dirty, sticking and scaling media in small (< 4’/1.25m) to medium (<18’/5.5m) tall tanks. Applied in skid, machine, tool and process applications, the general purpose sensors are available with single and multi‐function capabilities including measurement, switching and control.
SPECIFICATIONS Range: Accuracy: Resolution: Dead band: Beam width: Configuration: Memory: Supply voltage: Consumption: Loop resistance: Signal output: Signal invert: Signal fail‐safe: Contact type: Step Two ULSS: 49.2” (1.25m) ULSM: 9.8’ (3.0m) ULSL: 18.0’ (5.5m) ULSS: 0.125” (3mm) ULSM: +/‐ 0.2% of range ULSL: +/‐ 0.2% of range ULSS: 0.019” (0.5mm) ULSM: 0.039” (1mm) ULSL: 0.079” (2mm) ULSS: 2” (5 cm) ULSM: 4” (10 cm) ULSL: 8” (20 cm) ULSS: 2” (5cm) dia.
DIMENSIONS Step Three Series ULSL Series ULSM Series ULSS 4 of 30 MN890570 Rev A
SAFETY PRECAUTIONS Step Four About this Manual: PLEASE READ THE ENTIRE QUICK START PRIOR TO INSTALLING OR USING THIS PRODUCT. This manual includes information on the Series ULS Ultrasonic Level Switch, controller and transmitter from Dwyer Instruments, Inc. Please refer to the part number located on the switch label to verify the exact model configuration, which you have purchased.
COMPONENTS Step Five Series ULS is offered in different models. Depending on the model purchased, you may or may not have been shipped all the components shown below. You do however, need a Series ULS, USB Fob and FKM gasket to configure, install and operate Series ULS. P/N ULSS‐10 ULSS‐11 ULSS‐20 ULSS‐21 ULSM‐10 ULSM‐11 ULSM‐20 ULSM‐21 ULSL‐10 ULSL‐11 ULSL‐20 ULSL‐21 Max. Range 4.1’ (1.25 m) 4.1’ (1.25 m) 4.1’ (1.25 m) 4.1’ (1.25 m) 9.8’ (3.0 m) 9.8’ (3.0 m) 9.8’ (3.0 m) 9.8’ (3.
GETTING STARTED Step Six Series ULS is configured through ULSX‐CAL, a PC software program. ULSX‐CAL is a free download from Dwyer Instrument, Inc’s website. You must download and install ULSX‐CAL prior to plugging in the USB Fob. Please go to http://www.Dwyer‐Inst.com/software, click on ULSX‐CAL.
ULSX‐CAL Step Seven With Series ULS connected to your computer, open the ULSX‐CAL software by clicking on the ULSX‐CAL icon. Follow steps 1‐3 to configure the transmitter. Click “Help” in the lower right hand corner and open the help menu of ULSX‐CAL for additional instructions on ULSX‐CAL. If you need additional assistance using ULSX‐CAL, please contact a Dwyer Instruments, Inc Applications Engineer at (800) 872‐9141. Above Screen Capture is for the Series ULSS.
ULSX‐CAL CONFIGURATION Step Seven This section of ULSX‐CAL is where you select the application’s configuration settings. Start from the top and work to the bottom, choosing the selections that are applicable to your configuration. “Not Applicable” will automatically show when a selection doesn’t apply to your configuration settings, and you may move on. All configuration settings must be selected or have “Not Applicable” before you can continue to the next step.
ULSX‐CAL CONFIGURATION (continued) Step Seven Pump/Valve Action: This feature allows you to select if the pumps or valves will be used to automatically fill or empty the tank. For 2‐ Pump/Valve mode, both devices must be the same (automatic fill or empty). You cannot set one relay for fill and the other for empty. o Empties Tank – Will set relay(s) to automatically empty a tank. Start level will be above the Stop level for each relay.
ULSX‐CAL CONFIGURATION (continued) Step Seven Pump/Valve Mode: This feature allows you to select the mode for a control or latching relay. Pump/Valve mode is not active for Switch/Alarms Only or 4‐20 mA Transmitter Only. o Simplex – Allows for the relay to be used as an automatic fill or empty. This is the default and only configuration when 1‐ Pump/Valve is selected.
ULSX‐CAL CONFIGURATION (continued) Step Seven Relay Fail‐Safe: This feature allows you to select the fail‐safe state for the relays. When the sensor regains signal, the output current will revert back to the current level condition. o Relays Off ‐ The relays will revert to the OFF state. Appears when Switch/Alarms Only is selected. o Relays On ‐ The relays will revert to the ON state. Appears when Switch/Alarms Only is selected.
ULSX‐CAL CONFIGURATION (continued) Step Seven Switch/Alarm Configuration: This feature allows you to select the operation for the switches / alarms (used as a high or low alarm). This setting adjusts the number of available relays based upon the previous settings. o No Alarm – Turns off all of the remaining relays. o High Alarm Options – Set from 1 to 4 High Alarms (1‐High, 2‐ High, 3‐High, 4‐High).
ULSX‐CAL CONFIGURATION (continued) Step Seven Switch Hysteresis/Dead band: This feature allows you to select a hysteresis or dead band for the remaining high and/or low alarms. o Options for Hysteresis/Dead band – No Hysteresis, ¼”, ½”, 1”, 2”, ½ cm, 1cm, 2 cm, 5 cm or Not Applicable. o High Alarms – Relay activates above set point. Relay will deactivate when level goes below the set point plus the value of the hysteresis.
ULSX‐CAL CONFIGURATION (continued) Step Seven Loop Fail‐Safe: This feature allows you to select the fail‐safe current output if the sensor fails to detect a return signal. When the sensor regains signal, the output current will revert back to the current level condition. o Hold Last Value ‐ The output will remain in the same state as the last echo detected. Example: If the output was 6.
ULSX‐CAL TANK LEVELS / WRITE TO UNIT Step Seven ULSX‐CAL ‐ Tank Levels: This section of ULSX‐CAL is where you enter application measurement values. This applies to all versions of the Series ULS. You must enter the Sensor Height and Fill Height values. For the Series ULSS, ULSM and ULSL, the Sensor Height and Fill Height values determine the operational range for the 4‐20 mA output. Sensor Height: Distance from the bottom of the tank to the bottom of the transducer.
ULSX‐CAL ‐ WRITE TO UNIT Step Seven After you have entered configurations and tank values, click “Write to Unit” and send the configuration to your Series ULS. Now use ULSX‐CAL’s file management features to save your configuration by clicking “Save Config File” and print your wiring diagram by clicking “Wiring Diagram.
WIRING Step Eight Wire Connections: Red & Black: Red and Black leads are for connection to a 12‐28 VDC power supply or to a 4‐20 mA loop power source (Series ULSS, ULSM & ULSL only). The red and black wires can be extended up to 1,000 feet using a 22 gauge or larger wire, however do not extend the green and white wires. White & Green: White and Green leads are reserved for use with ULSX‐CAL and should not be connected during usage in the application.
WIRING Step Eight Switching Inductive Loads: The use of suppressors (snubbers) is strongly recommended when switching inductive loads to prevent disrupting the microprocessor’s operation. The suppressors also prolong the life of the relay contacts. Suppression can be obtained with a catch diode for DC circuits and a resistor‐capacitor (RC) for AC circuits. Catch Diode Always use stepper relays between the sensor and external loads.
INSTALLATION Step Nine The Series ULS should always be mounted perpendicular to the liquid surface and installed using the provided FKM mounting gasket. Make sure that the fitting and transmitter threads are not damaged or worn. Always hand‐tighten the transmitter within the fitting. Perform an installed leak test under normal process conditions prior to system start up. Note: The preferred mounting fitting for the Series ULSS & ULSM is the ULS‐ACC‐121 (2” thread x 1” thread) reducer bushing.
INSTALLATION Step Nine Fitting Selection: Check the part number to determine the required fitting mount size and thread type. Series ULS is commonly installed in tank adapters, flanges, brackets or standpipes. Note: Always include the gasket when installing the Series ULS. 1. Tank Adapter: Select a tank adapter fitting, such as the ULS‐ACC‐410 for the Series ULSS & ULSM or the ULS‐ACC‐420 for the Series ULSL. a.
INSTALLATION Step Nine 3. Flange (Series ULSS & ULSM): If installing on a flange, select a flange with a thread that is above the plane of the flange, such as the ULS‐ACC‐312. a. The Series ULSL works well with flange installations. b. Avoid the use of blind flanges with tapped threads or flanges where the threads are even with the plane of the flange, such as the Banjo 1" Poly ANSI Flange (series AF100). c.
INSTALLATION Step Nine 5. Stand Pipe: A standpipe maybe used to dampen turbulence or when foam is present in the application. a. Pipe can be made of any material. b. Select a minimum 3” ID pipe for the stand pipe. i. A 2” pipe is usable with the Series ULSS & ULSM, but is the minimum. ii. Pipes larger than 3” can also be used. c. Use a coupling and reducer bushing to attach the Series ULS to the pipe. i.
ADVANCED FEATURES Step Ten This tool is designed to help solve operational issues. Changing these setting will alter the performance of your unit. Please read through this HELP file to assist you in making adjustments or if you are still unclear about a specific issue, please contact Dwyer Instruments, Inc, Applications Engineering.
ADVANCED FEATURES Step Ten Increase Output Filtering: Placing a check mark in the box will increase the filtering (averaging) of the analog output. Use this filter if the 4 to 20 mA output requires a smooth output for the application such as open channel flow measurement. Decrease Output Filtering: Placing a check mark in the box will eliminate all filtering (averaging) of the analog output. Enables a pulse by pulse level reading.
APPENDIX Step Eleven Updating ULSX‐CAL Software: ULSX‐CAL software can be updated directly from the software. Simply click on the Updates Tab at the top of the window and press the “Download” button. Make sure that your computer has access to the Internet. If not, an error window will appear. When the Download button is pressed, the software will check the version of software you are using with the most recent version at Dwyer Instruments, Inc.
APPENDIX Step Eleven Updating Transmitter Firmware: ULSX‐CAL software can also be used to update firmware inside the Series ULS transmitter. This feature allows the transmitter to be updated when new features are added. First open ULSX‐CAL with an Series ULS transmitter connected and the latest version of ULSX‐CAL installed to your PC. Click on the “Updates” Tab and then click on “Select Program” to select the firmware update. Select the latest version of the firmware file and click on OK.
TROUBLESHOOTING Step Twelve Factory Default: Pressing the “Factory Config” button in the Configuration menu will return the screen to the following settings. Out of the box, the Series ULS will output a 4‐20 mA output that is maximized for its operational range. Series ULSS – 4 mA @ 4.1’ (1.25 m) away and 20 mA @ 2” (5 cm) away from sensor. Series ULSM – 4 mA @ 8.2’ (2.5 m) away and 20 mA @ 4” (10 cm) away from sensor. Series ULSL – 4 mA @ 18.0’ (5.
TROUBLESHOOTING PROBLEM Transmitter indicates a current of 0 mA Transmitter jumps to a current reading between 19 and 20 mA Transmitter indicates a current over 23 mA Transmitter always jumps to the LOST condition Output of transmitter is opposite of the level of liquid No Unit Detected in ULSX‐ CAL Step Twelve SOLUTION Check the wiring for an open circuit. An open circuit is the most common issue with a 0 mA signal. Check the installation of the transmitter.
MAINTENANCE & REPAIR Step Thirteen MAINTENANCE/REPAIR Upon final installation of the Series ULSS, ULSM or ULSL, no routine maintenance is required. The Series ULSS, ULSM or ULSL is not field serviceable and should be returned is repair is needed (field repair should not be attempted and may void warranty). WARRANTY/RETURN Refer to “Terms and Conditions of Sale” in our catalog or on our website.
