With its colour monitor and internal memory, Graphtec’s GL220 is a compact, lightweight, multi-channel data-logger that provides 10 analog measurement channels, in addition to four channels each of discrete logic and pulse inputs.
It also supports one external trigger input and four alarm outputs.
The unit is equipped with a 2 GB internal Flash memory to allow the direct capture of acquired data, and its built-in USB port may be used to connect any standard USB Flash drive for additional capacity. Alternatively, the USB interface may be connected to a PC to allow data upload in real-time or from memory, as well as remote configuration and real-time data acquisition.
Each analog channel can measure from 20 mV to 50 V full-scale across 11 programmable measurement ranges. Each channel is electrically isolated from all others and from instrument ground to allow accurate and safe measurements in industrial applications where ground potential differences are common.
The GL220 can be used to measure voltage, current, 4–20 mA process currents, as well as thermocouple-based temperatures; humidity can also be measured with the help of an optional sensor. The instrument provides four discrete input channels that can be used for counting and rotational speed measurement applications.
The data-logger can be programmed to calculate average value, peak value, minimum value, rms and arithmetic operations. Sample intervals can be programmed to one of 16 values ranging from 10 ms to one hour. The four alarm outputs can be programmed to trigger as a function of analog input signal level judgment, pulse judgement or logic pattern.
The focal point of the GL220 is its 4,3” built-in WQVGA colour display that allows real-time trending, data review and complete instrument configuration. Each channel allows up to four break points to be programmed for accurate scaling into meaningful units like psi, grams, Newtons, gallons per minute, etc.
The instrument allows data capture to be started or stopped based upon signal level, an external event, date/time, alarm, duration or Boolean channel combinations. Analog signal triggers can be programmed based upon level and window tests: above threshold, below threshold, inside window or outside window.
The GL220 includes a Windows application for direct capture, measurement and monitoring of data. In addition to waveform and data value capture and display, the application can export data to an Excel file for further analysis and report creation. The software includes built-in help for quick reference.
The GL220 can be powered from its international AC adaptor, from an optional built-in battery pack, or from any 9 to 24 V d.c. source using an optional cable.
For more information contact Peter Jones Electronic Equipment, +27 (0)11 608 2944, [email protected], www.peterjones.co.za
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