Instrotech’s Revere stainless steel compression and beam load cells are also available with digital output. The RS485/RS422 bus interface allows the scada or DCS to communicate directly with each load cell in the system, offering advantages in system set-up, control, corner correction, fault finding and load cell replacement.
Models SCC and SBC have a multilayer printed circuit board with a power regulator which supplies an excitation voltage to the Wheatstone bridge. The uncompensated output of the bridge is fed through an A/D converter and digital filter. A microprocessor controls the A/D converter, temperature sensor and digital output interface.
The load cells offer an extensive diagnostics structure which verifies the integrity and operation of the strain gauge circuit, power supply, EEprom, A/D converter and temperature sensor. These load cells produce a strong output signal, which is unaffected by electrical noise and temperature fluctuations on field cabling, thereby enabling the use of cable lengths up to 1200 m. A surge protection device is integrated to protect against overvoltages and lightning strikes.
The hermetically sealed IP66/68 units are of stainless steel construction and are certified to OIML R-60, 400d. Digital output is via a RS485 or RS422 interface and can be processed by a computer, PLC or a dedicated indicator. Multiple systems with up to 32 load cells may be connected to one control unit. Software drivers are available for the user to develop customised system software.
A rationalised output of 240 000 counts means that within a system, any load cell can be replaced without the need for recalibration. Low and medium accuracy systems can be automatically calibrated without the need for dead weights. Capacities for the beam load cell are 0,5 to 10 ton and for the compression type they are 10 to 100 ton.
Noncontact infrared temperature control in aluminium rolling process Instrotech
Temperature Measurement
The aluminium rolling process is critical to the aluminium manufacturing industry, where precise temperature measurement is essential for ensuring high-quality product output and protecting equipment. The Optris long-wavelength camera can accurately measure strip temperatures in cold rolling and coiling applications.
Read more...Rotary atomisers for efficient paint spraying Instrotech
Sensors & Transducers
Painting the bodywork is an integral component of vehicle manufacturing. Keller supplied intrinsically safe pressure transmitters and intrinsically safe temperature sensors to a client producing paint robots for the car industry.
Read more...Quality process control instrumentation Instrotech
Temperature Measurement
Instrotech is a leading provider of high-quality process control instrumentation and industrial automation solutions that are designed to optimise efficiency, reliability and safety across industries.
Read more...Advanced weighing system
Mass Measurement
As global demand for lithium batteries rises, Minebea Intec is providing advanced weighing systems for BYD’s lithium carbonate project in Nanning, China.
Read more...Custom solutions for pressure measurement Instrotech
Sensors & Transducers
Wherever pressure sensors are needed, a solution can normally be found in the Keller product catalogue. However, there are often great benefits to optimising a product specifically for integration and use in complete existing systems.
Read more...Pressure sensors for hydrogen applications Instrotech
Pressure Measurement & Control
Keller manufactures isolated piezoresistive pressure sensors. The great advantage of the piezoresistive measuring principle is its high stability.
Read more...Wind turbines with smart sensors Instrotech
Motion Control & Drives
The wind’s usable kinetic energy increases with the wind speed. Wind turbines, therefore, use kinetic energy to generate torque and then rotational movement. The rotor, consisting of three rotor blades, ...
Read more...Infrared camera for condition monitoring and early fire detection Instrotech
Temperature Measurement
The Optris PI 640i thermal imager is the smallest measuring VGA infrared camera, with a body-sized volume of 45 x 56 x 90 mm, and weighing only 269 to 340 g, depending on the lens. It counts among the most compact thermal imaging cameras on the market.
Read more...Pressure monitoring for oil and water tempering machines Instrotech
Pressure Measurement & Control
Temperature plays a significant role in many manufacturing processes. In such cases, a tempering machine is used to maintain the manufacturing process at the desired temperature. Keller supplied PR-21Y piezoresistive pressure transmitters to a client specialising in developing and producing oil and water tempering machines.
printer friendly version