Lascar EL-USB-ACT

Product Highlights

• Energy monitoring mode (to calculate power, cumulative energy and cumulative cost)
• Compatible with a.c. and d.c. current clamps
• a.c. and d.c. millivolt measurement mode

This standalone data logger measures and stores up to 127,000 a.c. or d.c. current readings. This logger must be used with an appropriate current clamp to take readings over a 0 to 1000 amp d.c. measurement range (0 to 723 amps for a.c.). In 'energy monitoring' mode, this data is converted into power, energy (using a user defined voltage value) and cost (using a user supplied energy unit cost). The millivolt measurement mode allows for direct measurement of voltage, up to 1V d.c. (707mV a.c.).

The user can easily set up the logger and view downloaded data by plugging the data logger into a PC's USB port and using the supplied software. The software has provision for a clamp scaling factor (the clamp input-output ratio of amps to millivolts). Stored data can then be graphed, printed and exported to other applications. The high contrast LCD can show a variety of current, power, energy and cost information. At the touch of a button, the user can cycle between the most recent, maximum and minimum measurement values. The data logger is fitted with 2 replaceable AA batteries.

Ensure the connector(s) from your current clamp are pushed fully home into the 4mm sockets of the EL-USB-ACT.

Note: some designs of 4mm plugs require a noticeably higher force to be applied during the last 5-10mm of travel during insertion.

Also be aware that it is normal for the logger to show a small spike in the reading when either connecting or disconnecting to the current clamp, although this should decay to close to zero after a few seconds. You may wish to make use of either the delayed start, or push to start modes in the software - if you want to avoid this effect appearing in your logged data.