Float-Tek Vertical Continuous Float Transmitter LV55 Series 17 SEPT 08 Rev A Flowline, Inc. 10500 Humbolt Street Los Alamitos, CA 90720 Tel: (562) 598-3015 Fax: (562) 431-8507 www.flowline.
of 12 Float-Tek LV55 Series MN201345 17 SEPT 08 Rev A
Preface This manual explains how to use the Switch-Tek series of horizontal and vertical floats. Warranty, Service & Repair To register your product with the manufacturer, go to the Flowline website for on-line registration. The website address is as follows: www.flowline.com On-line Warranty Registration can be found under Contact Us in the Navigation Bar along the side of the home page. If for some reason your product must be returned for factory service, contact Flowline Inc.
Warranty Flowline warrants to the original purchaser of its products that such products will be free from defects in material and workmanship under normal use and service for a period which is equal to the shorter of one year from the date of purchase of such products or two years from the date of manufacture of such products. This warranty covers only those components of the products which hare non-moving and not subject to normal wear.
Table of Contents Introduction ..........................................................................................................................6 Technology ..........................................................................................................................6 Installation............................................................................................................................7 Threads.............................................................................
Introduction 1. Continuous Float Transmitters should be installed rigidly so the float is free to move as the liquid level changes. 2. Continuous Float Transmitters should be mounted in a tank area free of severe turbulence or protected from such turbulence by appropriate and adequate slosh shields. 3. Continuous Float Transmitters stems should be vertical for best results, but satisfactory operation is possible in most liquids with the stem at up to a 30° angle from vertical. 4.
Installation FLOWLINE’s Float-Tek level switch is an in tank system. Float-Tek may be installed through the top wall of any tank or flange, using a standard 2” NPT tank adapter or blind flange. If the top is not available, Flowline’s side mount bracket, LM50-1001, enables Float-Tek to be installed directly to the side wall or lip of the tank.
Dimensions Material Compatibility: o The LV55 series is made of 316 Stainless Steel (316 SS) with a top housing made of Polypropylene (PP). o Make sure that the switch is compatible with the application liquids. To determine the chemical compatibility between the sensor and its application liquids, refer to the Compass Corrosion Guide, available from Compass Publications (858-589-9636).
Electrical Interface Use the Red wire as the (+) and the Black wire as the (-).
Specifications Range: Standard lengths: 6” to 96” (15.2 cm to 2.4 m) 16”, 24”, 32”, 36”, 42” or 48” Note: sensing length will be shorter than the stem length by 2.63". This is the top dead band and the bottom dead band added together Accuracy: 0.25” over span in water Resolution: 5 mm Specific gravity: 0.55 minimum Orientation: +/- 30° from vertical Supply voltage: 10 to 30 VDC Loop resistance: 600 Ohms @ 24 VDC Signal Output: 2-wire: 4-20 mA output Calibration: None, fixed Process Temp.
Maintenance Maintenance should consist of inspection to see that the float is free to move and not coated with any substance, which would change its weight or volume significantly. If this occurs, the float should be cleaned. This is easily accomplished without disturbing the installation. In addition, the stem may be wiped down to remove any build-up. The only repair possible in the field is replacement of either the float or stem. Dents or nicks on the float are usually of no consequence to operation.
Cleaning procedure: 1. Power: Make sure that all power to the transmitter, controller and/or power supply is completely disconnected. 2. Transmitter removal: If necessary, make sure that the tank is drained well below the switch prior to removal. Carefully, remove the transmitter from the installation. 3. Cleaning the switch: Using a soft bristle brush and mild deter-gent, carefully wash the switch. Do not use harsh abrasives such as steel wool or sandpaper, which might damage the surface of the sensor.
