EL-USB-4

EL-USB-4 4-20mA Current Loop Data Logger 4-20mA d.c. current loop measurement range Stores over 32,000 readings Logging rates between 1 second and 12 hours Connection via two screw terminals Immediate and delayed logging start User-programmable alarm thresholds Status indication via red and green LEDs EasyLog software available as a free download. This stand-alone data logger measures and stores over 32,000 current loop readings over a 4-20mA d.c. range at a resolution of 0.05mA d.c. The user can easily set up the logger and view downloaded data by plugging the data logger into a PCs USB port and using the available free downloadable EasyLog software. Data can then be graphed, printed and exported to other applications. The data logger is delivered complete with a lithium metal baertt y, which gives three years logging life. The data logger is also issued with a 4-20mA cap featuring a pair of screw terminals and measurement leads terminating in crocodile clips. EL-WIN-USB Lascars EasyLog control software is available as a free download from www.easylogusb.com. Easy to install and use, the control software is compatible with 32-bit and 64-bit versions of Windows 7, 8 and 10. The software is used to set up the logger, download, graph and annotate data or export in Excel, PDF and jpeg formats. The software allows the following parameters to be configured: Logger name Logging rate (user selectable between 1 seconds and 12 hours) High and low alarms Immediate and delayed logging start Download the latest version of the software free of charge from www.lascarelectronics.com/software/easylog-usb SPECIFICATIONS ACCESSORIES Measurement range 4 to 20mA d.c. BAT 3V6 1/2AA Replacement baertt y Internal resolution 0.05mA d.c. USB-CAP-4-20 Replacement Cap Accuracy (overall error) 1% Input impedance 110 Ohms INCLUDED IN THE BOX Logging rate User selectable between 1 second & 12 hours BAT 3V6 1/2AA Baertt y Operating temperature range -35 to +80C (-31 to +176F) USB-CAP-4-20 4-20mA Range Cap Baertt y Life 3 years (at 25C and 2 second logging rate) EL-USB WALL BRACKET Mounting Bracket Readings 32,510 Dimensions 98 x 26.8 x 26.8 mm (3.85 x 1.05 x 1.05) EL-USB-LEADS Measurement Leads www.lascarelectronics.com/data-loggers Issue 18 09/2018 Page 1 of 3EL-USB-4 4-20mA Current Loop Data Logger LED STATUS INDICATION The EL-USB-4 features two LEDs: a green/red LED to indicate logging and alarm status. In normal operation the green LED will flash, but will change to red if an alarm condition has been triggered. Using EL-WIN-USB it is possible to set the alarm to remain active even if the reading has returned to normal, in which case the alarm LED will continue to flash red. This Hold feature in the software ensures the user is notified that at some point an alarm level has been exceeded, without needing to download the data. Green single flash (Every 10 Seconds) The data logger is currently logging, no alarm. Green single flash (Every 20 Seconds) The data logger is currently logging. No alarm. Although, baertt y is low and should be replaced before logging important data. Green single flash (Every 30 Seconds) The data logger is not currenty logging, but is primed to start at a later date and time (delayed start). Green double flash (Every 20 Seconds) The data logger is full and has stopped logging, no alarm. Red single flash (Every 10 Seconds) The data logger is currently logging. Low alarm. Red single flash (Every 20 Seconds) The data logger is currently logging. Low alarm. Although, baertt y is low and should be replaced before logging important data. Red double flash (Every 10 Seconds) The data logger is currently logging. High alarm. Red double flash (Every 20 Seconds) The data logger is currently logging. High alarm. Although, baertt y is low and should be replaced before logging important data . Red & green single flash (Every 20 Seconds) The data logger is full and has stopped logging. High, Low or both alarms. No LEDs flash The data logger is stopped, the baertt y is empty or there is no baertt y fitted. CONNECTION & APPLICATIONS +ve supply to sensor +ve supply to sensor +ve supply to sensor+ve supply to sensor +ve supply to sensor+ve supply to sensor I out I in I out I inI out I in Signal out Signal out Sensor Sensor (current source) Signal out Signal out (current sink) Signal out Signal out Sensor Sensor Sensor Sensor (current source) (current source) (current sink) (current sink) 4-20mA current loop transmitter 4-20mA current 4-20mA current loop transmitter loop transmitter -ve/GND supply to sensor -ve/GND supply to sensor -ve/GND supply to sensor-ve/GND supply to sensor -ve/GND supply to sensor-ve/GND supply to sensor other 4-20mA current loop devices other 4-20mA other 4-20mA current loop devicescurrent loop devices + + + + + + + + + Connecting to a current loop transmitter. Connecting to a current source sensor. Connecting to a current sink sensor. www.lascarelectronics.com/data-loggers Issue 18 09/2018 Page 1 of 3