High Precision DC Current Data Loggers - Signatrol UK

Leading data-logging specialists Signatrol are introducing two new current measuring versions of their successful low cost SL120 series of portable data loggers. The SL121i is designed to measure and record data from 4-20 mA current loops with a resolution to 12 bits. This precision is essential for logging process control signals and the loggers can be connected directly into 4-20 mA loops via the 1.5 m lead fitted with crocodile clips as standard. The SL121i is electrically protected against reverse polarity connection or over-current.

These self powered data loggers are configured using Signatrol’s versatile TempIT software via an infrared reader, which draws power from the COM port on the computer used for set up. Both units have two internal programmable Hi-Lo software alarms and sample rates can be programmed from 2 seconds to 24 hours. An internal 450 character manifest can be scripted to include application and location details.

The SL121i has a capacity of over 16000 readings. Additional features in the SL121i include a green ‘active’ logging LED and red alarm indication, which remains lit if pre-programmed current levels are exceeded. An audible alarm also sounds if excursions occur. The delayed start feature can be used in applications where the logger set up is done in advance and remotely from the measuring location.

Fast Data download is carried out using the infra-red interface and the TempIT software allows the user to graph in mA or other engineering units.

Signatrol expect the SL121i to find application across a broad spectrum of process and control industries and the units are ideal for logging at remote sites, especially in the water and waste industries, and for conducting temporary investigations.

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