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Ultra-Low MicroDL w/ Flat Flex Probe

Ultra-Low MicroDL w/ Flat Flex Probe

Part Number:MicroDL - Flat Flex Probe


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  • Operating Range:Ultra-Cold, -80°C to 30°C
  • Temperature Accuracy:±1.0°C at Full Scale
  • Alarm Display:LCD Display of Critical Mission Data
Key Features

  • Flat, Flexible Temperature Probe.
  • ±1.0°C Temperature Accuracy at Full Scale.
  • Measures Temperature in 0.1°C Increments.
  • User-Defined Logging Rates.
  • Stores up to 8K, 32K, 64K of Temperature Data.
  • Programmable High/Low Temperature Alarms.
  • LCD Display of Critical Mission Data.
  • User-Defined Logger Label.
  • Push-to-Start Mission Launch.
  • Unique Serial Number.
  • Optional NIST Traceable Certificate.
  • UV Resistant Enclosure.
  • Splash Proof IP54 Enclosure Rating.
  • 3 Year Battery Life (Continuous Use).

The Ultra-Low MicroDL w/ Flat Flex Probe is a temperature data logger designed for monitoring extremely cold environments reaching temperatures as low as -80°C.  The primary enclosure with LCD display is deployed outside the ultra-low environment, while the RTD probe located on the opposite end of the flat flexible cable is deployed in the Ultra-Low environment.  The flat flex cable is 20" long and .3" wide and is able to pass around doors or container lids without disturbing the integrity of the seal.  (If your application requires the entire unit to be contained in the ultra-low environment, please contact us.)  The Ultra-Low MicroDL loggers are available in 8K, 32K, or 64K memory capacities.  They are ideal for monitoring dry ice packages, such as those used in Red Blood Cell products, and ultra-low freezer applications. These multi-use loggers may be downloaded, reconfigured, and deployed numerous times; and can last for months to years in most applications due to the ample storage capacity and battery life.

The MicroDL loggers have many user programmable logging functions which enable the logger behavior to be customized for application specific needs (e.g. logging rates, alarm thresholds, start delay). The loggers also have a digital display which enables you to view real-time temperature readings as well as review summarized historical data. The chart below compares the features which differ between the models:

Model # Memory Size Continuous Memory Variable Memory
mDL880fp 8K Yes Yes
mDL3280fp 32K No No
mDL6480fp 64K No Yes

Alarm Functions

The MicroDL loggers record both high and low temperature alarms. The alarm duration reported may be configured to be the continuous duration (longest single alarm incident) or the cumulative alarm duration (total of all high or low alarm incidents). At the push of a button, the LCD display allows you to view mission critical data such as:

microDL Logging Enabled
Is the logger running?
microDL Alarm Duration
Have high or low alarms occurred? If so, how long?
microDL Maximum Temperaure
What are the maximum and minimum temperatures reached?
microDL mean kinetic temperature
What is the mean kinetic temperature?
Battery Life

The MicroDL battery is rated for 3 years* of use in typical applications and the batteries are factory replaceable. The amount of battery life remaining is reported each time the logger is configured, helping prevent the deployment of loggers with insufficient battery life. If a MicroDL logger's battery is depleted, the temperature data is retained and once the battery is replaced the temperature data can be recovered.

*In situations where loggers are recording readings quickly (faster than once a minute) or are used at temperature extremes, there may be a reduction in battery performance.

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