Bulletin L-UL Series UL Transmitters TM Specifications - Installation and Operating Instructions DWYER INSTRUMENTS, INC. P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Phone: 219/879-8000 Fax: 219/872-9057 www.dwyer-inst.com e-mail: info@dwyer-inst.
Table of Contents Table of Figures Chapter 1. Introduction Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Measuring Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Chapter 2. Installation Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS Service: ULB: Bulk solids, ULF/ULL: Compatible liquids. Wetted Materials: Sensor: Polypropylene or PVDF (upon request), Acoustic Window: ECTFE. Ranges: (see “Measuring Ranges”). Accuracy: 0.25% of max range (at 20°C). Resolution: 0.04˝ (1 mm). Blind Zone: (See “Blind Zone”). Beam Angle: 5° @ 3db point. Temperature Limits: -40 to 158°F (-40 to 70°C). Temperature Compensation: Automatic. Pressure Limits: 13.5 psi (0.9 bar) to 30 psi (2 bar). Power Requirement: 18 to 28 VDC.
Installing the Unit on Threaded Flange/Thread-Free Flange The unit is available in 2˝ NPT or 2˝ BSP (upon request). Chapter 2: Installing the Unit Precautions • Ensure that the unit is mounted in an area that meets the stated temperature, pressure and technical specifications. • Ensure that high-voltage sources or cables are at least 40˝ (1 m) away from the sensor and its cable. • Use round cables with minimum diameter of 0.24 to 0.28˝ (6 to 7 mm) to ensure that the unit remains sealed per IP65 standards.
Non-Intrinsically Safe Connections Installing the Unit Via Extension Pipes If the level of the measured surface falls within the dead-zone, (blind zone) area, you should use an extension pipe to mount the unit. When using an extension pipe, ensure that: • The sensor is positioned in the center of the pipe. • The pipe extension is exactly perpendicular to the surface of the target. • The internal pipe diameter is at least 3.0˝ (76.2 mm) wide.
Using Series UL Functions The LCD display screen, functioning in "normal" mode, provides continuously updated measurement readings. The display screen is also used to view the menu options, function settings and data values, accessed by using the function buttons. Chapter 3: Setting Up and Calibrating the Unit This chapter explains how to set up and calibrate the unit for accurate measurement monitoring. The unit is supplied with preprogrammed default settings, making it ready for immediate operation.
appears, press the ESC button to return to the NOTE: If an error message main menu. Values are displayed in feet and inches or meters and centimeters (model dependent). Defining Interfering Signals The Pr03 function enables you to locate and store up to six interfering signals (false echoes) in the unit’s memory to avoid having obstructions, such as a tank agitator or a sidewall, interfering with the measurement of the contents. Defining interfering signals is done while the tank is empty.
Configuring 20 mA Current Output The Pr05 function enables you to enter values to be used as the 20 mA mark for remote monitoring. Configuring 4 mA Current Output Pr04 function enables you to enter values to be used as the 4 mA mark for remote monitoring. You can define the 4 mA values for level, distance or flow measurements (depending on series). The measurement value types should be defined in Pr04. These definitions will be applicable as well for the 20 mA values defined in Pr05.
To Define a Working Area: Selecting Low/High Dynamic Speed (ULF and ULL Series Only) The Pr06 function enables you to choose the required speed level. There are two settings available: • SE 0: Low dynamic mode (default setting). This mode provides slower readings with a greater degree of accuracy (rate of up to 31˝/80 cm per min). • Fail-Safe: 10 minutes. • SE 1: High dynamic mode. This mode provides faster readings but with less precision (rate of up to 39˝/100 cm per min). • Fail-Safe: 3 minutes.
Shifting the Blocking Distance (SBD) This function enables you to define an area in which measurement results would be ignored. This option is applicable for installations requiring extension pipes or nozzles positioned above the material level. This area should approximately fit the pipe/nozzle length to eliminate false echoes and to provide accurate and stable measurement readings.
Defining 22 mA Signal Error Messages The unit allows you to define if the following signal error indications: Near Zone and Lost Echo, will be active when the current output reaches 22 mA. The default setting enables 22 mA analog current and error messages to appear on its LCD display. Chapter 4: Open Channels (ULF) This section describes how to set flow measurement parameters for open channels and explains the flume/weir codes methodology used when setting up flow measurements.
Flume/Weir Types This is the first value (X) entered for the Pr00 function.
Palmer Bowlus Flume Trapezoidal Throat Cross-Selection (Type 7) Khafagi-Venturi Flume (Type 5) Code (YY) Conduit Diameter (in) D 01 6 02 8 03 10 04 12 05 15 06 18 07 21 08 24 09 27 10 30 Code (YY) Flume Type b0 (cm) 01 12 QV 302 02 30 QV 303 03 40 QV 304 04 50 QV 305 05 60 QV 306 06 80 QV 308 07 100 QV 310 08 130 QV 313 09 160 QV 316 Figure 15: Khafagi-Venturi Flume Figure 17: Palmer Bowlus Flume Trapezoidal Throat Cross-Selection Parshall Flume (Type 6) H Flume (Type 8) Code (YY) Throat Width (in) 0
Neyrpic Venturi Flume/Long-Base Weir (Type 9) Rectangular Contracted Sharp-Crested Weir (Type 2) Code (YY) Venturi Flume Type 01 1253AX 02 1253AY 03 1253AZ 04 1253A 05 1253B 06 1253C 07 1253D 08 1253E 09 1253F Code (YY) Crest Length (in) 01 12.00 02 18.00 03 24.00 04 30.00 05 36.00 06 48.00 07 60.00 08 72.00 09 96.
H Flume (Type 7) Parshall Flume (Type 5) Code (YY) Flume Size (in) Measurement Point (in) 01 6 1.96 02 9 2.75 03 12 3.54 04 18 5.51 05 24 7.08 06 30 9.05 07 36 11.02 08 54 16.
22 mA Signal Error Messages The following list of messages will appear on the display and coincides with a 22 mA analog current error output signal (when the error signals messages are enables): Chapter 5 Troubleshooting This chapter describes how to resolve problems that may occur when calibrating the unit as follows: Error Description 1. Noise in area. (Indicated by 22 mA if the Error Signals are Enabled). 2. Inappropriate power supply/no grounding. Faulty power supply. Sensor disconnected.
Appendix A Appendix B Gas Factor Table The following table contains 32 different types of gasses and their factor for compensating the sound velocity: Installation Tips Factor 0.62 0.63 0.74 0.54 0.99 1.26 0.92 0.53 0.41 0.37 0.56 0.77 1.01 0.38 0.68 0.71 0.90 0.71 0.95 2.93 3.79 0.89 0.62 1.29 0.71 1.30 1.01 0.63 1.02 0.72 0.61 0.
Appendix C Figure 29: Nomenclature MAINTENANCE/REPAIR Upon final installation of the Series UL, no routine maintenance is required. The Series UL is not field serviceable and should be returned if 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. Contact customer service to receive a Return Goods Authorization number before shipping your product back for repair.
