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1 Products availableOur Complete range of products are Dynamic Load Cell, DA indicator, DH-INDICATOR, CRANE OVERLOAD PROTECTION SYSTEM and through put weigher.
Vibration switch does the function of a watch dog. Certain amount of vibration is allowed in all the systems / Products. Vibration beyond a limit is catastrophic. This device monitors the vibration level of a machine, system and switches off / alarm, if its vibration goes out of the set limit.This can prevent unscheduled break downs for various heavy machinery such as large motors, gear boxes, cooling tower fans, etc.
PreethiTech Vibration Switch consist of
Accelerometer with a frequency range of 10 Hz to 10 KHz giving an output proportional to acceleration.A level setting circuit, to set the allowable level of acceleration.A relay output, when the vibration exceeds the set level. This relay output can give warning or can shut the equipment under consideration.
Movement of bulk material is an essential feature in modern industrial processes. The simplest and fastest mode of transportation of such material is to convey them over a moving belt. In this operation the precise weighing of material, as it moves, has assumed a key role in process industries. Hence weigh feeder is a closed loop control system in which a precise control can be had over the flow of materials, which has indicating, totalizing and controlling instruments and circuits.
The Weigh Feeder is a custom engineered equipment that finds application in continuous bulk proportioning of solids. This gravimetric feeder is operated by a closed loop control system enabling feeding at a controlled rate and exercises precise control over rate of flow based on a micro controller.
The system is capable of accepting external signals from other controllers or from the process computer, depending on the extent of plant instrumentation. These gravimetric feeders are in operation in steel, cement, fertilizer and chemical industries. Each system consists of control and local panels, load cells to measure the instantaneous load, a digital tacho to sense the speed of the belt and a belt feeder conveyor shaft is driven by an AC motor coupled through the gear box.
Every process industry be it steel, pharmaceuticals, food, chemicals etc would need to do batch production in certain processes. This would be due to processes like mixing, reactions etc. It is then so desired that certain quantities of different ingredients are put together as a batch and the recepie is critical for the process. The system should ensure that only the right quantity of the ingredient is discharged to make the batch. The system would comprise of loadcells, gates, control desk which houses a PLC and the SCADA software. The sequence of operation can be customized for the process. Batching systems ensure that there is efficient process control in terms of the quality of end product, reduction of physical labor and the error arising due to the same, improved productivity and a cleaner factory.
In the case of conveying of bulk materials which has material characteristics like free flowing by nature, which packs under pressure, which are very light and fluffy i.e., may be windswept and materials with very high temperature, in such cases belt feeders are not suitable ; only Screw Feeder are recommended. The Gravimetric Screw Feeder is custom engineered compact, enclosed and eco-friendly equipment that finds applications in continuous bulk proportioning of solids. This gravimetric feeder operated by a closed loop control system enables feeding at a controlled rate and exercises precise control over rate of flow.
The system is capable of accepting external signals from other controllers or from the process computer, depending on the extent of plant instrumentation. These gravimetric feeders are in operation in cement, fertilizers and chemical industries. Each system consists of control panel, local panel, loadcell to measure the instantaneous load, tacho to sense the speed of the screw which is mounted inside closed trough. The screw shaft is driven by a constant speed AC motor coupled through a gear box.
During the operating life, rotating machines suffers gradual deterioration in their condition and performance due to wear and tear caused by friction between moving parts on the machines. Increase in machine wear is always accompanied by increase in vibration level, which therefore can be used as index of machine condition. If the machine is allowed to run on without corrective measures being taken, vibration levels will increase with time at increasing rate until a stage is reached where the machine fails completely. Monitoring vibration levels on machines such as Fans, Blowers, Pumps, Cooling Towers and Turbines which has to be operated continuously will help to detect increase in vibration levels that are likely to result in machine failure, so that a programmed shut down may be carried out for maintenance. PG701 series of Vibration Transmitters are designed to monitor the vibration levels of the above mentioned rotating machines. The 4-20Ma signal being proportional to the G level can be connected directly to the monitoring device such as a PLC, else customized display devices & data logging system, can be provided by us.
PreethiTechs bagging machines are extensively used in various industries like spices, coffee, cattle feed, tea, fertilizer, etc. We make both the nett weight bagging system which is called the pre-weigh & dump machine and also the direct bagging machine. For the higher capacities we have the jumbo bagging machine. These machines are fully electronic and the sensing of weight is by high precision loadcells which are manufactured in house. The high speed electronics is totally designed by us and has features like dynamic inflight correction, coarse, fine and dribble feed , etc.The feed of material from the storage hopper is controlled either by gates, vibrofeeders or conveyors depending on the material being handled. Bagging speeds of upto to 6 bags per minute is achieved for 50 kg on a single head. These machines are integrated with a slat conveyor to carry the bag after filling and a stitching/ sealing machine to complete the process.
A135A1 is a 3- digit, panel-mounting indicator capable of reading upto a maximum of 1999 for an input of 15mV DC with a sensitivity of 10 mV/division. It is compatible with strain gauge based transducer like loadcells, Pressure Transducers, Torque Transducers etc., which have 350 ohms bridge resistance. It can support a maximum of four transducers when connected in parallel. The system provides a very stable power supply of 10V DC for excitation of the transducers. It consists of a differential amplifier to amplify the signal from the transducers. The circuitry is based around an Analog to Digital converter (ADC). The ADC drives a 7-segment, 13mm height LED display. The system provides an output of 0-10V corresponding to the applied load. OR The system provides a current output of 4-20mA corresponding to load applied.
Loss in-Weigh Feeders operate on the principle of controlled loss-in-weight. The proposed system comprises of a Weigh Hopper, Loadcells, Screw Conveyor with motor and associated control electronics. The Weigh Hopper and Screw Conveyor are mounted on 3 Nos. of Loadcells. The Loadcells are connected to a controller through a junction box.The material from the storage hopper is fed to the weigh hopper, which is controlled by a gate. A small screw feeder is mounted below this weigh hopper. The weigh hopper and screw feeder are mounted on high precision Loadcells and the output of the Loadcells are summed in a junction box and fed as an analog input to the controller. The controller calculates the rate, compares with the set rate and feeds the corresponding 4-20mA signal to the VVVF drive so as to control the speed of the motor of the screw, thereby controlling the rate of discharge.
Force Calibrator is designed to revalidate a loading system (UTM) or a hydraulic press from time to time. The system consists of a precision load cell / pressure transducer connected to the Force Calibrator, , which works on a single 9V battery with a 7 segment 10mm height, LCD display. To increase battery life a sleep mode has been incorporated. The indicator goes into a sleep mode if there is no change in reading beyond 5 counts within a span of 15 mins, thereby increasing battery life. The sleep mode can be revoked without any change in reading subject to load being held constant. The unit is factory calibrated using standards that has been calibrated in a national standards lab.
PreethiTech provides Hopper / Tank / Silo / Bin Weighing Systems offer simple, rugged, accurate and reliable weighing. It ranges from 5 KGs to any Tonne capacity depending upon single loadcell arrangement or multiple loadcells. Single load cell conversion is best suited for Liquid Weighing and in the case where only level indication is required. For Hopper and Silo Weighing System, generally, three loadcell mounting arrangement is ideal. But, for horizontal tank, four loadcell based systems are recommended and for outdoor application, hermetically sealed loadcells are preferred. The Indication for Hopper / Tank and Silo Weighing System can be Level / Weight, which is available either as Wall Mounting Type or Panel Mounting Type.Today we have digital load cells that can make the whole process of installation and trouble shooting easier.
DH340A0 is a field-programmable indicator designed to be used with strain gauge based transducers. The main features of the indicator are
The indicator can be programmed through keypad for range, resolution, filter time constant and decimal point. Tare, Tare recall and calibration are also performed through keypad. It is provided with hardware lock facility to avoid unauthorised setting changes. The front panel has got digital display and keypad. The power supply, input and output are at rear end.
Over loading of the crane is a common occurrence. To prevent the same, IPA has the Trip safe which would ensure that over loading of the crane/hoist is prevented. In this crane over load protection system, the trip safe module is used in conjunction with a suitable loadcell. The advantage of this system over the conventional system is the speed at which the module responds. Also as this is the direct measurement of the load, the action taken for tripping is appropriate and quick. The Trip Safe will ensure that both overload and under load is prevented. Underload occurs when the hook is further released after it touches the ground, which can cause the rope to slip out of the pulley. This low cost solution is ideally suited for all crane and hoist manufacturers.
Signal Conditioners is a wall-mounting instrument compatible with strain gauge based transducers. It can support a maximum of 4 transducers when they are connected in parallel. Signal conditioners are used to accept for further processing of output signals. After which they are converted into voltages and currents. Voltage signals are used for processing with in the system and current signals are used for transmitting over long distances and then for further processing.
The features of the signal conditioner are:
Output proportional to loadSimple to operateReliableEasy to installRugged designed for industrial environmen
Strain Gauge distributed by Preethitech are of foil type and comes in two different impedances which are 120 Ohms and 350 Ohms.
These are used in the manufacture of loadcells and various strain measurement applications. We also manufacture nickelgaugesfor :
You can have all the accessories like adhesives, cleaning agents, elements for bonding of straingaugesetc. from us.
Tyre inflators, also known astyre pressure controller are the latest product that we have launched into the market. The systems are very rugged and can handle very hostile environments. The intelligent software ensures that the type of tyre is sensed and the filling happens in the shortest possible time. We have two models to suit your budget and operation which are the wall mounted model and the floor mounted model. these can be customized for special areas like cargo companies, military, police etc where the type of trucks are limited and so the tyre pressure need not be entered into the machine but the type of truck can be selected very easily. Our tyre inflators are ideally suited for fuel filling stations, automobile workshops, tyre shops, bus stations, freighting companies etc
The system finds extensive use in process industries where monitoring the quantity of materials coming out after completion of a process, especially where materials like powder, granules etc. are used, which comes out at a very low rate, say in the order of under 5T per day or lesser. It is extensively used in the tea industry.
The system consists of a buffer hopper and a weigh hopper both provided with gates. The weigh hopper is mounted on loadcells. These loadcells are connected to an indicator where the set value can be entered. As soon as the weight in the weigh hopper achieves the set value, the buffer hopper gate closes and the weigh hopper gate opens to discharge the weighed quantity of material on to a down stream process line. The electronic indicator registers the exact quantity of material.
As soon as the weigh hopper becomes empty, the gate closes and the buffer hopper gate opens and the process continues
PreethiTech offers a wide range of weighing solutions among which Crane Scale stands out as one of the rugged, accurate indigenous product- for which we had a patent. We are among the leading crane scale manufacturers in the country of India and abroad. Starting from a capacity of 500Kg hook on crane scales finds its applications in ship building, material handling, manufacturing, etc., where material has to be weighed on the go. Crane scale is hooked on to the lifting mechanism such as a crane or a hoist and the crane scales hook lifts the material that is to be transferred. Simultaneously the weight/load is displayed while the material is being carried.This ensures that another operation of weighing is avoided.We also deal with wireless loadcells.
Rope Tension is a special loadcell used for measuring the tension on a rope. It is clamped on to the rope and is used to measure the slackness or tension of a rope on a crane. It is widely used in cranes for overload protection and rope slackening prevention.
Crane/Hoist Over load Monitoring Systems , Rope Tension Monitoring Systems, Tower Testing Applications, Lift Over load Monitoring Systems
The shearbeam load cell can be either cylindrical or rectangular. The strain gauges are placed at the bottom of the blind holes. The strain gauges are mounted on the beam at 45 degrees to the longitudinal axis. When the load is applied to the beam, gauges along 45 degrees become longer (tension), along 135 degree become shorter (compression), thereby unbalancing the bridge. The shear beam load cell is insensitive to lateral forces, and point of application of torque is not critical. Shear Beam Loadcells with IP-68 pro
Similar to the bending beam, the shear beam loadcells can be used in very harsh industrial environments for measurement of compressive and tensile forces.
Tank weighing and vessel weighing, dynamic weighing typically in conveyor applications, platform scales etc.
The universal shear loadcell is generally used for material testing and in applications where both compression and tension loads are to be monitored.
Bag Filling, Hopper Weighing Systems, UTM & Testing applications, Electro Mechanical Weigh Bridges.
We offer strain guage based pressure transducers with and without integrated amplifier. We are also launching the digital pressure transducer- with a digital output. Our pressure transducers are very rugged and can be used for all media compatible with steel. With a stainless steel enclosure, these tough pressure transducers are available from 5 kg/cm to 300 kg/cm.
