Mass Measurement


Precision digital indicator for belt weighing applications

Technews Industry Guide - Maintenance, Reliability & Asset Optimisation 2015 Mass Measurement

Loadtech’s LT1300 wall mount load cell indicator is a precision digital unit for load cell and strain gauge applications, which takes weight and speed information from a belt conveyor system to calculate rate and total material transferred. The high bright 6-digit 20 mm LED displays and the sunlight readable graphic LCD display make for easy setup and readability. A simple menu system allows for easy configuration and load cell settings. Calibration can be done directly from the load cell calibration certificate or by using known weights.

A universal mains switchmode power supply (85-264 VAC) is provided as standard, but a low voltage (10-30 VDC) isolated power supply or a high voltage (25-70 VDC) isolated power supply can be installed as optional.

The LT1300 contains precision front end circuitry for high accuracy and stability. The load cell bridge excitation voltage can be field selectable for 5 or 10 VDC and provides for a Kelvin sensed feedback to compensate for cable loss. It can power up to six 350 Ω load cells at 10 V excitation and can interface to both 4 and 6-wire devices. RS-232 and RS-485 communications is supplied as standard with Modbus RTU and Modbus ASCII protocol.

A simple ASCII out protocol is also provided for serial printing and communicating to large displays. The LT1300 has analog circuitry to generate an additional precision 0/4-20 mA,0-10 V or ±10 V output signal. Advanced features include auto-zero tracking, user input linearisation, max/min recording, programmable push buttons and digital inputs, security menu lockout, zero indication, motion indication and advanced digital filtering.

For more information contact Glen Webster, Loadtech Load Cells, +27 (0)12 661 0830, glen@loadtech.co.za, www.loadtech.co.za



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