EL-USB-2-LCD
EL-USB-2-LCD
ORDERING INFORMATION
Humidity, Temperature
and Dew Point Data Logger
with LCD
Standard Data Logger
EL-USB-2-LCD
(Data Logger, Software on
CD, Battery)
Replacement Battery
BAT 3V6 1/2AA
FEATURES
• 0 to 100%RH measurement range
• -35 to +80°C (-31 to +176°F) measurement range
• Dew point indication via Windows control software
• USB interface for set-up and data download
• User-programmable alarm thresholds for %RH & T
• Status indication via red and green LEDs
• High contrast LCD, with two and a half digit temperature
and humidity display function
• Immediate, delayed and push-to-start logging
• Supplied with replaceable internal lithium battery and
Windows control software
This standalone data logger measures and stores up to 16,379 relative humidity and 16,379 temperature readings over 0 to 100%RH and
-35 to +80°C (-31 to +176°F) measurement ranges. 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. Relative humidity, temperature and dew point (the temperature at which water
vapour present in the air begins to condense) data can then be graphed, printed and exported to other applications. The high contrast LCD
can show a variety of temperature and humidity information. At the touch of a button, the user can cycle between the current temperature
and humidity, along with the maximum and minimum stored values for temperature and humidity. The data logger is supplied complete with
a long-life lithium battery, which can typically allow logging for up to 1 year.
Specications
Minimum
0
Measurement range
Relative Humidity
Repeatability (short term)
±0.1
Accuracy (overall error)
±3.0*
Internal resolution
0.5
Long term stability
Unit
100
%RH
±6
%RH/Yr
+80 (+176)
±0.5 (±1)
Internal resolution
0.5 (1)
Accuracy (overall error)
±2 (±4)
Operating temperature range***
-35 (-31)
1/2AA 3.6V Lithium Battery Life
°C (°F)
°C (°F)
°C (°F)
±1.1 (±2)**
every 10 s
°C (°F)
°C (°F)
±0.1 (±0.2)
Accuracy (overall error)
Logging rate
%RH
%RH
0.5
Repeatability
Dew Point
Maximum
%RH
-35 (-31)
Measurement range
Temperature
Typical
every 12 hr
-
+80 (+176)
°C (°F)
Year
1†
* This species the overall error in the logged readings for relative humidity measurements between 20 and 80%RH.
** This species the overall error in the calculated dew point for relative humidity measurements between 40 and 100%RH at 25°C.
*** At temperatures below -20°C (-4°F) the LCD will exhibit slower response times of approximately 10 seconds.
†
Depending on sample rate, ambient temperature and use of LCD.
Specications liable to change without prior warning
Issue 2
10 /09
S.C
Applies to EL-USB-2-LCD
Page 1 of 5
EL-USB-2-LCD
Humidity, Temperature and Dew Point Data Logger with LCD
EL-WIN-USB (CONTROL SOFTWARE)
Lascar’s EasyLog USB control software is supplied free of charge with each data logger. Easy to install and use, the control software runs
under Windows 2000, XP (Home and Professional Editions) & Vista (32-bit). The software is used to set-up the data logger as well as
download, graph and export data to Excel.
The software allows the following parameters to be congured:
• Logger name
• °C, °F
• Logging rate (10s, 1m, 5m, 30m, 1hr, 6hr, 12hr)
• High and low alarms
• Immediate, delayed and push-to-start logging
• Display off, on for 30 seconds after button
press, or permanently on
• Data rollover (allows unlimited logging per ods
by overwriting the oldest data when the memory
is full)
The latest version of the control software
may be downloaded free of charge from
www.lascarelectronics.com
DISPLAY AND STATUS FUNCTIONS
The EL-USB-2-LCD features a high contrast LCD and two bi-colour LEDs. The LCD shows logged temperature and humidity values using seven
segment numbers, along with annunciators. The LCD can also show information regarding the logging status.
Relative Humidity
symbol
Maximum logged
value symbol
Negative symbol
Minimum logged
value symbol
Reading
Temperature
scale
The LCD shows six different recorded readings, which can be cycled through using the built-in push button. The most recent logged value,
maximum logged value and minimum logged value can be displayed separately for humidity and temperature. In addition, logging and alarm
status is shown using two high intensity LEDs.
www.lascarelectronics.com
Specications liable to change without prior warning
Issue 2
10 /09
S.C
Applies to EL-USB-2-LCD
Page 2 of 5
EL-USB-2-LCD
Humidity, Temperature and Dew Point Data Logger with LCD
LCD INDICATION
Display
Logger Status
Explanation
Delayed Start
This is shown when the logger is set to
start at a specic data and time*
Push to Start
This is shown when the logger is setup
for “Push to start” logging
Logging
This is shown when the logger is running
in “LCD off” mode, and the button is
pressed. The display clears again after
three seconds
Stopped
If the logger has not been set to log and
the button is pressed, three dashes are
displayed for three seconds
* If the logger is set to “LCD off” or “LCD on for 30 seconds” mode, then this will only be shown after the button
is pressed. Otherwise the display will remain blank.
LED FLASHING MODES
EL-USB-2-LCD features 2 bi-colour LEDs; one LED represents temperature measurement, the other represents RH. Each is clearly marked
on the logger. To save power, the status indication alternates between the two channels every 10 seconds. First you will see the status of
the temperature logging, and 10 seconds later you will see the status of the RH logging, and so on.
RH% °C (°F)
RH% °C (°F)
10 seconds later
Green double ash
The data logger is not currently logging, but is primed to start at a later date and time (delayed start).
Green single ash
The data logger is currently logging. No alarm on the channel.
Red single ash
The data logger is currently logging. Low alarm on the channel.
Red double ash
The data logger is currently logging. High alarm on the channel.
Green triple ash
The data logger is full and has stopped logging. No alarm on the channel.
RH%
Red/
Green LED
°C (°F)
Red/
Green LED
Red triple ash
The data logger is full and has stopped logging. Alarm (high, low or both).
No LEDs ash
The data logger is stopped, the battery is empty or there is no battery tted.
Specications liable to change without prior warning
Issue 2
10 /09
S.C
Applies to EL-USB-2-LCD
Page 3 of 5
EL-USB-2-LCD
Humidity, Temperature and Dew Point Data Logger with LCD
DIMENSIONS
25.3 (1.04)
All dimensions in mm (inches)
22.1 (0.87)
126.0 (4.9)
MEASUREMENT ACCURACY
BATTERY REPLACEMENT
We recommend that you replace the battery every 12 months, or prior to logging critical data.
The EL-USB-2-LCD does not lose its stored readings when the battery is discharged or when the battery is replaced; however, the data logging
process will be stopped and cannot be re-started until the battery has been replaced and the logged data has been downloaded to a PC.
Only use 3.6V 1/2AA lithium batteries. Check with your supplier that the battery you are ordering is ‘press t’ and is not tted with solder tags.
Before replacing the battery, remove the EL-USB-2 from the PC.
Note:
Leaving the EL-USB-2 plugged into the USB port for longer than necessary will cause some of the battery capacity to be lost.
WARNING
Handle lithium batteries carefully, observe warnings on battery casing. Dispose of in accordance with local regulations.
www.lascarelectronics.com
Specications liable to change without prior warning
Issue 2
10 /09
S.C
Applies to EL-USB-2-LCD
Page 4 of 5
EL-USB-2-LCD
Humidity, Temperature and Dew Point Data Logger with LCD
CAUTION
Exposure of the internal sensor to chemical vapours such as those produced by some plastics and foamed materials may interfere with the
internal sensor and cause inaccurate readings to be logged. In a clean environment, this will slowly rectify itself; therefore ensure that the
logger is used in a ventilated area, i.e. air exchange is allowed.
Exposure to extreme conditions or chemical vapours will require the following reconditioning procedure to bring the internal sensor back to
calibration state. 80°C (176°F) at <5%RH for 36h (baking) followed by 20-30°C (70-90°F) at >74% RH for 48h (re-hydration).
High levels of pollutants may cause permanent damage to the internal sensor.
THE EASYLOG USB RANGE
Each EL-USB data logger features the direct-to-USB connection and easy-to-use functionality that the range is known for. The range
comprises 14 data loggers as detailed in the following table:
Part No
Function
Range
Accuracy (overall error)
Typ.
Max.
Readings Battery
Battery Life*
EL-USB-1
Temperature
-35 to +80°C (-31 to +176°F)
±1ºC (±2ºF)
16,382
3.6V ½AA
1 year
EL-USB-1-PRO
High temperature
-40 to +125°C (-40 to +257°F)
±0.2ºC (±0.4ºF)
±0.5ºC (±1ºF)
32,510
3.6V ҀAA
3 years
EL-USB-2
Temperature, humidity & dew point
-35 to +80°C (-31 to +176°F)
±0.5ºC (±1ºF)
±2ºC (±4ºF)
16,382
3.6V ½AA
1 year
0 to 100%RH
±3%RH
±6.0%RH
16,382
EL-USB-2+
Increased accuracy temperature,
humidity & dew point
-35 to +80°C (-31 to +176°F)
±0.3ºC (±0.6ºF)
±1.5ºC (±3ºF)
16,382
3.6V ½AA
1 year
0 to 100%RH
±2.0%RH
±4.0%RH
16,382
Temperature, humidity & dew point
with LCD
-35 to +80°C (-31 to +176°F)
±0.5ºC (±1ºF)
±2ºC (±4ºF)
16,379
3.6V ½AA
1 year
0 to 100%RH
±3.0%RH
±6.0%RH
16,379
EL-USB-2-LCD+
Increased accuracy temperature,
humidity & dew point with LCD
-35 to +80°C (-31 to +176°F)
±0.3ºC (±0.6ºF)
±1.5ºC (±3ºF)
16,379
3.6V ½AA
1 year
0 to 100%RH
±2.0%RH
±4.0%RH
16,379
EL-USB-3
Voltage
0 to 30V d.c.
±1%
32,510
3.6V ½AA
1 year
EL-USB-4
Current loop
4 to 20mA
±1%
32,510
3.6V ½AA
1 year
EL-USB-TC
Thermocouple (J, K and T-type)
K-type probe included
-200 to +1350ºC (-328 to +2462ºF) (K-type)
±1ºC (±2ºF)
32,510
3.6V ½AA
6 months
±1ºC (±2ºF)
32,510
3.6V ½AA
6 months
EL-USB-2-LCD
-200 to +1190ºC (-328 to +2174ºF) (J-type)
-200 to +390ºC (-328 to +734ºF) (T-type)
EL-USB-TC-LCD
Thermocouple with LCD (J, K and
T-type) K-type probe included
-200 to +1350ºC (-328 to +2462ºF) (K-type)
-200 to +1190ºC (-328 to +2174ºF) (J-type)
-200 to +390ºC (-328 to +734ºF) (T-type)
EL-USB-CO
Carbon monoxide
0 to 1000ppm NOT A LIFE SAVING DEVICE
±6ppm
32,510
3.6V ½AA
3 months
EL-USB-CO300
Carbon monoxide
0 to 300ppm NOT A LIFE SAVING DEVICE
±4ppm
32,510
3.6V ½AA
3 months
EL-USB-LITE
Low cost temperature
-10°C to +50°C (+14 to +122°F)
±1ºC (±2ºF)
4,080
CR1620
1 month
Lithium coin cell
EL-USB-RT
Real-time temperature & humidity
monitor
±1.5ºC (±3ºF)
-20 to +70°C (-4 to +158°F)
7 days
N/A
N/A
±4.5%RH
www.lascarelectronics.com
Specications liable to change without prior warning
Issue 2
10 /09
S.C
Applies to EL-USB-2-LCD
Page 5 of 5
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