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User’s Guide

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OM-EL-WiFi-TH

Temperature/ Humidity

Data Logger

OM-EL-GFX-2-PLUS

High Accuracy Temp/RH

Data Logger with Graphic Screen

FEATURES

• Higher accuracy sensor when compared with the OM-EL-GFX-2

• Rugged and robust, IP67 construction

• -30 to +80°C and 0 to 100% RH measurement ranges

• Logging rates between 10 seconds and 1 hour

• Stores over 250,000 readings

• On screen menu and graphing to start, stop, review and restart the logger in the field

• Micro USB interface for PC based set-up and data download

• Immediate, delayed, push-button or temperature/RH triggered start mode

• User-programmable alarm thresholds

• Graphic LCD shows real-time readings, graph and current status

• Resettable Min/Max readings may be viewed on the LCD

• User set audible alarm

• Highly visible confidence/alarm LEDs

• Supplied with user replaceable ½ AA batteries

The OM-EL-GFX-2-PLUS standalone USB data logger measures and stores up to 252,928 temperature and humidity readings over a -30 to +80ºC

(-22 to 176°F) and 0 to 100%RH range at a resolution of 0.1ºC (0.1°F) and 0.1%RH.

Using the Windows control software (available as a free download from www.omega.com) the user can quickly set up the logger name, sample rate, alarm settings and start mode (immediate start, push to start, delayed start or temperature/humidity triggered start). This software can later be used to download the stored data which can be graphed, printed and exported to other applications.

The data logger features a dot-matrix LCD and three face-buttons to navigate through an on-screen menu. This menu provides the user with access to real-time trend analysis, data summaries and the ability to start, stop and restart the data logger without the need to connect the data logger to the host-PC. Users can reset the maximum/minimum reading using the on-screen menu; this introduces an ‘event marker’ into the data which can later be viewed in the graphing software (‘Mark Events’ option) and the data file after download.

Specifications

Measurement range

Internal resolution

Minimum

0

Typical

±0.1

Maximum

100

Relative Humidity Accuracy (overall error)

Repeatability

Long term stability

Measurement range -30(-22)

±1.8*

0.1

<0.5

±4.0

+80 (+176)

Temperature

Internal resolution

Accuracy (overall error)

0.1 (0.1)

±0.2 (±0.4) ±0.8 (±1.6)

Dew Point

Logging Rate

Operating Temperature Range***

2 x ½AA 3.6V Lithium Battery Life

Repeatability

Accuracy (overall error)

Every 10 seconds

+30 (-22)

±0.1 (±0.2)

±1.1 (±2.0)**

4†

* This specifies the overall error in the logged readings, for relative humidity measurements between 20 and 80%RH.

** This specifies the overall error in the calculated dew point for relative humidity measurements between 40 and 100%RH at 25°C.

*** At temperatures below -5°C the LCD will exhibit slower response times. The LCD will be disabled at temperatures under -20°C and above 70°C.

† At 25°C and 10 minute logging rate, with no alarm LEDs or sounder and minimal LCD use.

Every 1 hour

+80 (+176) www.omega.com

Specifications liable to change without prior warning Issue 5 07/2015 S.L Applies to OM-EL-GFX-2-PLUS Page 1 of 4

Unit

%RH

%RH

%RH

%RH

%RH/year

°C (°F)

°C (°F)

°C (°F)

°C (°F)

°C (°F)

Time

°C (°F)

Months

OM-EL-GFX-2-PLUS

High Accuracy Temp/RH Data Logger with Graphic Screen

OM-EL-WIN-USB (CONTROL SOFTWARE)

Omega’s USB control software is available to download from www.omega.com. Easy to install and use, the control software runs under

Windows XP, Vista Windows 7 and Windows 8. The software is used to set-up the data logger as well as download, graph and export data to Excel. Each stored logging session is saved as a separate file.

The software allows the following parameters to be configured:

• Logger name

• Measurement parameter (ºC or ºF)

• Logging Rate (customizable between 10 seconds and 1 hour)

• High and low temperature alarms

• Immediate, delayed, push-button or temperature/humidity triggered start mode

• Disable or enable LEDs and sounder with delayed activation

• Display and backlight behaviour after button press

The latest version of the control software may be downloaded free of charge from www.omega.com

DIMENSIONS

All dimensions in mm (inches)

48.5 (1.91) 30.5 (1.20) www.omega.com

Specifications liable to change without prior warning Issue 5 07/2015 S.L Applies to OM-EL-GFX-2-PLUS Page 2 of 4

OM-EL-GFX-2-PLUS

High Accuracy Temp/RH Data Logger with Graphic Screen

MENU BUTTON FUNCTIONS AND LED SCREEN INDICATION

ON-SCREEN ICONS

START LOGGER

● Loggers can be started immediately on a button press, delayed to a specific time or delayed to specific temperature reading

● When this EasyLog cube is spinning in the top-left corner your logger is logging

● High/Low Alarm indicators are displayed at the top of your screen

● This icon indicates that your battery is low and will need to be replaced soon

SUMMARY DATA

● Summary screen displays max/ min log and last log. Reset function clears summary if required

● These screens can be reached by pressing the button

LOGGER SETTINGS

● To view a summary of the logger’s settings press the button, then click ‘Logger Settings’

Please note that screens may vary slightly depending on model. OM-EL-GFX-1 screens shown.

DISPLAY DATA

● Data can be displayed on screen in tabular or graphical format

● You can switch between these views by pressing the / buttons at the bottom-left of your screen

STOP/START LOGGING

& MUTE ALARM

● By pressing the button, you can stop your logger, or view logger settings. If you have already stopped logging, this option will change to

‘Start Logging’. The audible alarm can be muted from this menu if enabled

LOCKED MODE

● When in locked mode - an option during PC set-up - the logger can only be stopped and re-started using a PC loaded with the unit’s configuration software

POP-UP MESSAGES

● A message will overlay the screen - if there is an issue - the next time a button is pressed, e.g. if the logger is running low on memory

BATTERY INFORMATION

We recommend that you replace the batteries every 4 months, or prior to logging critical data.

Replacement

The OM-EL-GFX-2-PLUS does not lose its stored readings when the batteries are discharged or when the batteries are replaced; however, the data logging process will be stopped. If the batteries are changed within a 2 minute window the OM-EL-GFX-2-PLUS will retain its settings (internal clock and logging mode). This will allow logging to be restarted without additional connection to a PC via USB.

Only use 2 x OM-EL-BATT lithium batteries. Do not mix battery types and do not mix new and old batteries. Before replacing the batteries, unplug the OM-EL-GFX-2-PLUS from the PC.

WARNING

Handle lithium batteries carefully, observe warnings on battery casing. Dispose of in accordance with local regulations.

Passivation

If left unused for extended periods of time, the Lithium batteries used in the Omega’s range of data loggers naturally form a nonconductive internal layer, preventing them from self-discharge and effectively increasing their shelf life. When first installed in the data logger, this may cause a momentary drop in the battery voltage (the Transient Minimum Voltage) as the internal layer is broken down, resulting in the data logger resetting. Inserting the batteries in the data logger and leaving it connected to a PC for about 30 seconds will remove this layer. After this, remove and re-install the batteries to reset the data logger. Overall battery life will not be affected.

www.omega.com

Specifications liable to change without prior warning Issue 5 07/2015 S.L Applies to OM-EL-GFX-2-PLUS Page 3 of 4

OM-EL-GFX-2-PLUS

High Accuracy Temp/RH Data Logger with Graphic Screen

MEASUREMENT ACCURACY

www.omega.com

Specifications liable to change without prior warning Issue 5 07/2015 S.L Applies to OM-EL-GFX-2-PLUS Page 4 of 4