Weighing & Inspection Belgium

Brielstraat 112 - B 9990 Maldegem - T. +32 (0)50 71 09 20 - F. +32 (0)50 38 25 75

www.wibe.beRamsey Goring Kerr Ludwig Rembe H-Sensortechnik Loadrite Hycontrol

To achieve a high level of accuracy it is desirable that there be as large a product mass as possible in the screw. This can be achieved by selecting the right tube diameter, speed, revs, degree of filling and the screw’s play at the wall. It is also important that the systems in front of and after the screw are not allowed to adversely affect the weighing. Both the in-feed and out-feed of the screw must therefore be linked to therest of the system with a flexible sleeve. The following aspects also deserve close attention:

• Positionofthedrivewithrespecttothepowersensor;• Lengthofthescrew;• Determiningtheweightofthefullandemptyscrew;• Determiningthelocationofthecentreofgravityofthescrew anddrive;• Calculating,withthehelpoftheprincipleofmoments,the optimum point of application for introducing power into the powersensor;• Determiningthetypeandcapacityofthepowersensor;• Dimensionsoftheweighingframe.RemoteScaleMonitor (RSM)

The Ramsey Remote Scale Monitor(RSM)programmakesitpossibletocommunicatewiththeMicro-Tech instruments either directly via serialcommunications(RS-485)orviaamodem.Thekeyboardanddisplay of the Micro-Tech can be displayed and operated on thePC.Onepossibleapplicationofthisfeatureistouseitwithinstruments located at a great distance or in hazardous places, or to provide remote technical support.

Some functions are:

• CollectingdatafromtheMicro-Tech instruments• Operatingtheinstrumentsremotely• Generatingreports• Generatingtrendcurves• PrintingreportsfromthePC• Performingset-upandcalibrationprocedures.

RSMwasdevelopedforWindows95.Minimum system requirements:Pentium133MHzPCandamonitorwith a resolution of 800 x 600 pixels.

RamseyGoringKerrLudwigRembeH-SensortechnikLoadriteHycontrolWeighing & Inspection Belgium | Brielstraat 112 - B 9990 Maldegem | T. +32 (0)50 71 09 20 - F. +32 (0)50 38 25 75

Ramsey has a worldwide reputation as a specialist in dynamic weighing systems.

This is due primarily to the thousands of Ramsey belt weighing systems now in use all over the world.

Ramseyscrew conveyorweighing systems

The menu-driven control, special function keys and comprehensive display help make the system extremely userfriendly.

This weighing frame has already proved its reliability and accuracy for over 20 years.

A weighing accuracy from 1% of full-scale values is easily achievable.

ARamseyscrewweighingsystemis generally used for bulk goods which cause dust in freefall and which are ideally suited for transportbyaScrewconveyor.

RaMSey ScRew conveyoR weighing SySTeMS

Ramseyhasaworldwidereputationasaspecialistindynamicweighingsystems.ThisisdueprimarilytothethousandsofRamseybeltweighingsystemsnowinuseallovertheworld.

Whatmanypeopledon’tknowisthatRamseyhasalsouseditsmanyyearsofknowledgeandexperience of dynamic weighing to develop systems for weighing devices such as chain and screw conveyors.

RaMSey ScRew conveyoR weighing SySTeMS

isavailableinapaneldesign(MT-2101P)and a wall-mounted design (MT-2001F),IP65.There is also the Black Box version(MT-2401),IP65.TheMT-2401canbeprogrammed and preset in the fieldusing a hand terminal or a laptop (or anyotherPCrunningatleastWindows95).Aserialinterface(RS-422)canbeusedtoconnecttheMT-2401toaPCrunningtheRamseyRSM(RemoteScaleMonitor) program. This program can beused to operate and read out from theMT-2401atadistance.

Micro-Tech Feeder controller, modelMT-2105

The Micro-Tech 2105 is not just a weightintegrator, it is also a dosing unit fordynamic weighing systems. The measured product stream is comparedwith a preset desired product stream (setpoint). The MT-2105 generatesacontrolsignal(0/4-20mA)withwhichthe product feed or screw speed can beadjusted to ensure that the presentproduct stream is equal to the desiredproduct stream.TheMicro-TechFeederControllerisavailableinapaneldesign(MT-2105P)and a wall-mounted design (MT-2105F),IP65.ABlackBoxversion(MT-2405),IP65isalso available.The Micro-Tech weighing processorscan be equipped with the followingoptions, among others:

• ExtraDigitalI/Oboard• BCDI/Oboard• ExtramAoutputboard• Serialcommunicationsboard (Siemens9364R,Modbus, Allen Bradley)• AllenBradleyRemoteI/O communications• ProfibusDPcommunications

applications

ARamseyscrewweighingsystemisgenerally used for bulk goods whichcause dust in freefall and which areideally suited for transport by a screwconveyor. The existing or plannedlayout of the factory can also have aninfluence on whether or not to use aweighing or dosing screw. A screwweighing system is a particularly attractive solution at places where there are height restrictions.

accuracy

The accuracy of a screw weighingsystem is heavily dependent on thespecifications of the screw conveyor.Nothing very much can be changed inthe weighing set-up of an existing screw.That’s why we prefer to supply a completesystem, in which the screw can be optimally dimensioned. In such cases aweighing accuracy from ± 1% of fullscalevalues is easily achievable.

Flexibelemanchet

Flexibelemanchet

Snelheids-opnemer

KrachtopnemerWeegframe

Draaipunt

Screw conveyorweighing systemIn principle the same components areused for a screw conveyor weighingsystem as for a belt weighing system:

• Weighingframewithprecision powersensor;• Speedsensor;• Weighingprocessor.

weighing frame, model 10-20s

The 10-20s weighing frame is derivedfrom the well-known 10-20 belt weighingframe. This weighing frame has alreadyproved its reliability and accuracy forover20years.Onthefrontoftheweighing frame are two pivot joints between which the in-feed side of the weighing screw is suspended. To ensure an accurate weighing it is essential that the pivot joints continue to function properly. The rear of the weighing frame contains a power sensor on which the

out-feed side of the weighing screw is suspended. The signal from the power sensor is a measure of the weight of product in the screw, expressed in kg/m.

Speed sensor, model 60-12c

The 60-12c digital sensor is connectedto the shaft of the screw by a coupling.The signal from the speed sensor is ameasure of the screw speed, expressedin m/s.

Micro-Tech integrator/Total counter,model MT-2101

The Micro-Tech 2101 is a weight integrator for dynamic weighing systems.By integrating the mV signal of the powersensor(s) (weighing frame) with the pulsesignal of the speed sensor the MT-2101can generate a readout for the productstream in, for example, tons/hour. It isalso possible to read out the load (kg/m),the speed (m/s), a day counter (kg) anda total counter (kg).The menu-driven control, special functionkeys and comprehensive display help make the MT-2101 an extremely userfriendly integrator/total counter.TheMicro-TechIntegrator/TotalCounter

weighing frame 10-20 S

Speed sensor 60-12c

MT-2101P (panel design)

MT-2001F (wall mounted design)

MT-2401 (Black-Box-version)