Lake-monitors Flow Transmitters Manuel d'utilisateur

www.lakemonitors.comProduct ManualFor Lake Flow Meters,Alarms and Transmitters

The indicated flow reading will read high for heavier fluids and low forlighter fluids. A corrective factor can be applied to the standard scaleor a s

Measuring ranges cover 1.5-12 SCFM through 150-1300 SCFM.Twenty-four port sizes from 1/8" through 2" in NPT, SAE and BSP canbe ordered to me

DENSITY CORRECTION FACTORSSCFM (indicated) x (CF) = SCFM (Actual) CF = (f1) x (f2) X (f3)Note: all correction factors need not be used.Table 1. (f1)

Page 13 / Flow Meters / Lake ManualSelecting the Proper MetersTo order a pneumatic flow meter the following information is required:n pipe size and po

TROUBLESHOOTING & MAINTENANCEPage 14 / Flow Meters / Lake ManualTROUBLESHOOTING CHARTMalfunction: Magnet follower sticks in mid-scale and will not

Page 15 / Flow Meters / Lake ManualTROUBLESHOOTING CHART (CONTINUED)Malfunction: Window tube is cracking or crazing.Possible Cause:Using incompatible

DisassemblyImportant: It is not necessary to remove window tube or window seals to clean the meter. Note also how the meterdisassembles for easy of re

IMPORTANT: If inner cartridge does not slide out freely, it may be sign of contamination. The transfer magnet is a powerful ALNICO magnet. Keep it awa

Cleaning and InspectionNote: If the inner cartridge is damaged or contaminated beyond repair, the complete meter can be sent to the manufacturer for e

FILTRATION AND CONTAMINATIONRecommended FiltrationThe manufacturer recommends system filtration of at least 74 micronfilter or a 200 mesh screen. It h

This manual is a service guide produced by Lake Monitors andprovides specific procedures and/or illustrations for disassembly,assembly, inspection, cl

Self-Generation ContaminationSelf-generated contamination is a product of wear, cavitation,fluid breakdown and corrosion. Systems that are carefully f

FLOW ALARMSwww.lakemonitors.com

NOTE: Installation, operation and cleaning instructions for the basic flow metercartridge can be found in the first section of this manual. The follow

The pointer indicates the set point for the alarm switch. In Illustration1, the switch will be actuated at all flow rates below 4 GPM. Tochange the se

Switches SpecificationsType Form C, dry contactUL/CSA Rating 10 & 1/4 hp, 125 or 250 VAC1/2 A, 125 VDC & 1/4A, 250 VDC3A, 125 VAC “L” lamp loa

Illustration 7 shows the connections for a standard, single switchFlow Alarm as they are shipped from the factory. The wiring for othertypes of connec

Standard Control CircuitsPage 26 / Flow Alarms / Lake Manual

Page 27 / Flow Alarms / Lake Manual* The load must be within the flow alarm’s and the slave relay’s contact rating. Please see specifications.

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FLOWTRANSMITTERSwww.lakemonitors.com

www.lakemonitors.comFLOW METERS

NOTE: Installation, operation and cleaning instructions for the basic flow metercartridge can be found in the first section of this manual. The follow

The sensor array located in the sensor assembly sends a signalrelative to the position of the follower to the signal conditioning circuit.The signal c

4-20 mA Output ConnectionsWiring Instructions (Refer to Illustrations 2 and 3 above):1) Move the programmable jumper on the signal conditioningboard i

0-5 VDC Output ConnectionsWiring Instructions (Refer to Illustrations 4 and 5 above):1) Move the programmable jumper on the circuit board into theposi

0-2000 Hz Pulse Output ConnectionsWiring Instructions (Refer to Illustrations 6 and 7 above):1) Move the programmable jumper on the circuit board into

1-5 VDC Output ConnectionsWiring Instructions (Refer to Illustrations 8 and 9 above):1) Move the programmable jumper on the signal conditioning board

ConnectorsStandard flow sensors are prewired with 4-wire Hirschmann-type DINconnectors which consist of a male section as shown in Illustration 10and

User AdjustmentsThe 4-20 mA, 0-5V, and 0-2000 Hz square wave outputs on the LakeMonitors Flow Transmitter are all factory calibrated. User adjustments

12) Gradually increase the flow through the system until the flow rate indicated on the printed flow rate scale reaches full-scale (the highest value

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Basic Application InformationThe flow meter can be installed directly in the fluid line without flowstraighteners or special piping. The meter is used

For downloadable product manuals,data sheets and CAD drawings,visit Lake’s web site today!www.lakemonitors.comLAKE MONITORS 8809 INDUSTRIAL DRIVE, F

Warning and Precautionary Areas1) The meters are designed to operate in systems that flow in only one direction: the direction of the arrow on the flo

INSTALLATIONBasic Installation InstructionsThe meters are mounted in-line and are direct reading. The meterscan be mounted in a vertical or horizontal

Fluid Flow in Reverse DirectionThe standard meter will not permit flow in the reverse direction(opposite direction to the arrow printed on the flow ra

OPERATIONOperating PrinciplesLake has developed a line of unique flow meters which combine thesimplicity of a sharp-edged orifice disk and a variable

1. End Porting 8. Flowing Sharp-Edged Orifice Disk2. Body Casing 9. Tapered Center Shaft3. Magnet Follower 10. Transfer Magnet4. Window Tube 11. Scale