Toshiba LF470 Quick Start Manual

Also see for LF470: Specification sheet Instruction manual

TIC-LF470H6 Wiring Precautions(1) Connect the following two cables correctly:1) signal cable (on the right facing the LF470)2) excitation cable (on the left facing the LF470)(2) Do not bend apply excessive force to these cables. Piping Precautions(1) Connect the fluid pipe to the pipe connection portusing a joint that matches the Rc (PT) female screw.Use seal tapes when connecting the pipe to the portto prevent a fluid leakage. Do not tighten theconnection screw too much.(2) Design piping so that the detector’s pipe is alwaysfilled with the fluid to be measured, whether thefluid is flowing or not.(3) The fluid to be measured must be held still in thepipe when the LF470 is being adjusted. If the fluidcan not be stopped after the LF470 installation,install a bypass pipe in parallel with the LF470flowmeter. Meter sizeTo select the meter size:See Table 2 to 4 and find meter sizes within thevelocity of 0.3 to 32.8 ft/s (0.1 to 10m/s) for aspecified full-scale (measuring range high limit)flow. Select one that has its full-scale velocitybetween 3.0 and 10 ft/s (1 and 3m/s).Note: Make sure the full-scale flow rate used for the finalplanning stage stays within 32.8 ft/s (10m/s) interms of flow velocity.Table 2. Meter size and Flow Velocity (SI unit)Unit:gal/minMeter size(inch) 0.98 ft/s 3.0 ft/s 10 ft/s 32.8 ft/s1/10” 0.02334 0.07115 0.2372 0.77811/6” 0.05975 0.1821 0.6071 1.9921/4” 0.1344 0.4098 1.3660 4.482Table 3. Meter size and Flow Velocity(English unit) Unit:L/minMeter size(mm) 0.3 m/s 1.0 m/s 3.0 m/s 10 m/s2.5 0.08835 0.2945 0.884 2.9454 0.2262 0.7540 2.262 7.5406 0.5088 1.6967 5.090 16.967 About establishment environmentDo not store or install the flowmeter:• Where there is direct sunlight.• Where excessive vibration or mechanical shockoccurs.• Where high temperature or high humidity conditionsexist.• Where corrosive atmospheres exist.• Places that can be submerged under water.• Where there is a sloped floor. To put the flowmetertemporarily on the floor, place it carefully withsomething, such as a block, to support it so that theflowmeter will not topple over.In areas like the following, there may be the case thatinfrared switches do not function correctly. (If these areunavoidable, use an appropriate cover.)(1) Where unit (operation panel) is exposed to directsunlight, reflection of light onto window pane anddiffused light reflection.(2) Where smoke and steam may occur.(3) Where exposed to direct snow, ice or mud.Ordering Information1. When ordering the LF470 flowmeters, refer toTables 4 to 5 (Specification Code).An entry must be made for each of the columns ineach of these tables.2. Fluid characteristics:(1) Type of fluid to be measured and its characteristics(2) Fluid temperature(3) Fluid pressure(4) Electrical conductivity of the fluid3. Measuring range4. I/O function setting5. Ordering scope:Flow calibration data: (required or not)6. Other itemsSpecifications other than standard itemsConsult a Toshiba representative before ordering whenchoosing materials of the wetted parts such as lining,electrodes, and grounding rings..

/ 8

Related manuals for Toshiba LF470