Portable Temperature/Humidity Data Loggers With Graphing Display

The OM-EL-GFX Series portable temperature/ humidity data loggers measure and store up to 252,928 readings. Using the included Windows® control software users can quickly set up the data logger and view downloaded data by connecting the device to the computer’s USB port.

The data logger features a high contrast graphic LCD display and three input buttons. This allows users to start, stop and restart the data logger using on-screen menus. The menu also provides real-time analysis of data either as a data summary (showing highest and lowest readings and alarm conditions) or as a graph that updates as new data is added. The maximum and minimum readings and also the time and date these are valid from can be displayed on the LCD display by using the info button. If desired, the user can then reset the maximum/minimum readings shown. Each time the maximum/minimum readings are reset while logging, an “event marker” is created in the data. When the data has been downloaded to the computer these events can be viewed on the graph (event markers), and they also appear in the data file associated with the corresponding log when the reset took place. This can be useful as an audit/validation tool for certain applications where procedures mandate that a regular physical check of the logger/statistics have taken place. Multiple data logging sessions can be stored on the device ready for upload to the computer at a later time.

The data logger’s robust design provides IP67 waterproof protection (OM-EL-GFX-1, OM-EL-GFX-2 and OM-EL-GFX-2-PLUS only).

Specifications
OM-EL-GFX-1
Measurement Range: -30 to 80°C (-22 to 176°F)
Internal Resolution: 0.1°C (0.1°F)
Accuracy (Overall Error @ 25°C): ±0.1°C (±0.2°F) typical; ±0.75°C (±1.5°F) maximum
Logging Interval: 1 reading every 10 seconds to 1 every hour
Battery Life: 6 months typical at 25°C (77°F) and 10 minute logging rate
Weight: 99 g (3.5 oz)
Dimensions: 88 H x 48.5 W x 30.5 mm D (3.46 x 1.91 x 1.20′)

OM-EL-GFX-2, OM-EL-GFX-2-PLUS
Temperature
    Measurement Range: -30 to 80°C (-22 to 176°F)
    Repeatability: ±0.1°C (±0.2°F) typical
    Internal Resolution: 0.1°C (0.1°F)
    Accuracy (Overall Error): OM-EL-GFX-2; ±0.5°C (±1.0°F) typical; ±2.0°C (±4.0°F) maximum:
OM-EL-GFX-2-PLUS; ±0.2°C (±0.4°F) typical; ±0.8°C (±1.6°F) maximum
Humidity
    Measurement Range: 0 to 100% RH
    Repeatability: ±0.5% RH
    Long Term Stability: ±0.5% RH/year
    Internal Resolution: 0.1% RH
    Accuracy (20 to 80% RH): OM-EL-GFX-2; ±3.0% RH typical; ±5.0% RH maximum:
OM-EL-GFX-2-PLUS; ±1.8% RH typical; ±4.0% RH maximum
Dew Point
    Accuracy (Overall error in the calculated dew point, for RH measurement between 40 to 100% RH @ 25°C): ±1.1°C (±2.0°F)
Logging Interval: 1 reading every 10 seconds to 1 every hour
Battery Life: 4 months typical at 25°C (77°F) and 10 minute logging rate
Dimensions: 88 H x 48.5 W x 30.5 mm D (3.46 x 1.91 x 1.20′)
Weight: 99 g (3.5 oz)

OM-EL-GFX-DTC (2 channels)
OM-EL-GFX-TC (1 channel)
Temperature Measurement Range:
    Type K: -200 to 1350°C (-328 to 2462°F)
    Type J: -200 to 1190°C (-328 to 2174°F)
    Type T: -200 to 390°C (-328 to 734°F)
Internal Resolution: 0.1°C (0.1°F)
Accuracy (Overall Error @ 25°C): ±0.5°C (±0.9°F) typical
Operating Temperature Range: -10 to 40°C (-14 to 104°F)
Logging Interval: 1 reading every 2 seconds to 1 every hour
Battery Life:
     OM-EL-GFX-DTC: 4 months typical at 25°C (77°F) and 10 minute logging rate
     OM-EL-GFX-TC: 1 year typical at 25°C (77°F) and 1 minute logging rate, LCD off
Weight: 105 g (3.7 oz)
Dimensions: 102 H x 48.5 W x 30.5 mm D (4.06 x 1.91 x 1.20′)

OM-EL-GFX-DTP
Temperature Measurement Range (with Included Thermistor Probe): -40 to 125°C (-40 to 257°F)
Internal Resolution: 0.1°C (0.2°F)
Accuracy (Data Logger Error @ 25°C): ±0.1°C (±0.2°F) typical (does not include thermistor probe error)
Accuracy (Thermistor Probe): See chart on PDF
Operating Temperature Range: -10 to 40°C (-14 to 104°F)
Logging Interval: 1 reading every 2 seconds to 1 every hour
Battery Life: 4 months typical at 25°C (77°F) and 10 minute logging rate
Dimensions:
    Data Logger: 101 H x 48.5 W x 30.5 mm D (3.98 x 1.91 x 1.20′)
    Thermistor Probe:
      Cable: 1 m (3′)
      Probe Tip: Stainless steel, 25 L x 5 mm dia (1 x 0.18′)
Weight: 105 g (3.7 oz)

COMMON SPECIFICATIONS
Memory: 252,928 readings
Software: Windows XP/VISTA/7 and 8 (32 and 64-bit)
Power: 2 ½ “AA” 3.6V lithium batteries (included)
Enclosure: IP67 with USB cover attached (excludes OM-EL-GFX-DTC, OM-EL-GFX-TC and OM-EL-GFX-DTP)
Display: High contrast graphic backlit LCD