Instrumentation Amplifier

Kyowa’s instrumentation amplifiers are connected to widely used several strain-gage transducers such as load cells, pressure transducers etc. and enable us to monitor various physical quantities such as weight, force, pressure, displacement and torque.
Besides they provide several output signals for control such as analog, comparator, BCD, RS-232C, and CC-Link.

A weighing system with load cells built-in, or a system with pressure transducers built-in, are incorporated into various machine tools, or industrial robots which are used in steelmaking, cement, foods, pharmaceutical and chemical, for the purposes of measurement, monitoring or control on various tests.

Recent trends toward labor saving, quality assurance and safety management have increasingly accelerated applications of Kyowa’s instrumentation amplifiers in various industrial fields.

Instrumentation Amplifier

Load Cell Applied Systems

Receiving loads from a hoisting mechanism using multiple load cells, the system detects the total weight, and then measures the real load after subtracting the tare.
Since WGA series outputs analog signal to an external meter, a hoisting load is monitored.
In addition, high & low limit signals let you know overload and it makes the system suitable for safety management.

Monitoring Contents of Tanks

Weighing contents of each tank enables automation and labor saving on mixing work.
Three or four load cells are usually mounted on each tank. Output signals are summed with a junction box and then amplified.
Relay output is used to monitor the amount of material in each tank.

Measuring Press-fit Load

In the automotive parts industry, a compression load cell and an instrumentation amplifier are used to measure and judge the load given through press-fitting air conditioning parts. The instrumentation amplifier provides a peak hold function and outputs the judgment signal to the OK/NG indicator after comparing each measured value with the reference value. The system is applied to similar press-fitting processes in other industries.

Controlling Cloth Tension

In the textile industry, for the quality control, square load cells and instrumentation amplifiers are used to measure cloth tension and to make the tension uniform. The same system is widely used for the production process for rolled steel, metal, paper, film and tape.

Measuring Flour Weight

In the flour industry, load cells and instrumentation amplifiers are used to weigh the bagged material for the purpose of judging whether the weight is as specified.
The result is output to an OK/NG indicator. Since the beam-type load cell is highly accurate and thin, it is suitable as a sensor for the system. The same system is used for weighing bagged materials in the fields of feedstuff, cement, and foods.

Pressure Transducer Applied System

Quality Control of products

In this system, a pressure transducer detects the pressure of gas which is sealed in a container, and a WGA-710C instrumentation amplifier measures the detected signal and then compares it with the preset value for OK/NG judgement.