Mini-Systems with Data Logger DL 18 or DL 18 - BLE

Our Mini-Systems are based on the data loggers DL 18 (interface: USB to PC withWindows or MacOS) or DL 18-BLE (interface: Bluetooth Low Energy to Windows PC, orTablet / Smartphone with Android or iOS). Both loggers feature 4 precise and high-resolution measuring channels (temperature-compensated, 16 bits) for connecting various analogue sensors, such as 4x dendrometer, 4x soil moisture sensors, 4x temperature probes (T-soil,T-surface,T-Tissue), 2x leaf temperature sensors (LAT-B2),and2x T/RH air sensor. Our mini measuring system can operate independently due to their robustness (weather resistant protective box and metal roof are included); battery-operative, extremely low power consumption (2replaceableAAA batteries, lifetime> 1 year);as well as their large internal memory (1,900,000 data points). Mini-Systems are thus ideal for long-term measurements in outdoor conditions with a spatially decentralized distribution of the measuring points

Advantages

  • Small, robust, weatherproof
  • User friendly: easy sensor connection with stereo plug, easy configuration and data readout via PC or smartphone/tablet, control buttons for the most important functions directly on the logger device, LCD display can be turned off (displayable information includes current measurement values, recording status, alarms, battery status, memory usage)
  • Extensive measurement functions: average, event-controlled burst-measurements, measurement-value-controlled alarms, etc.
  • Precise and high-resolution measurements
  • Low power consumption, powered by 2 AAA batteries; very long battery life
  • Large measurement data memory


Specific to the DL 18-BLE model

  • Wireless configuration and data transmission via Bluetooth Low Energy to Windows-PC, Tablet or Smartphone with Andriod or iOS

Limits

  • Only 4 channels
  • On the logger itself, linear conversions of the raw readings can be programmed and carried out; however, complex conversions must be performed post-hoc, after data download of the raw measured values (e.g., in a spreadsheet program)

Technical data

Logger-Type

Mini Logger

DL 18

Mini Logger

DL 18-BLE

Scope of application

Battery-powered data recording in outdoor conditions

Battery-powered data recording in outdoor conditions. Bluetooth data transfer to smartphone/tablet particularly advantageous if logger accessibility is difficult (e.g., if attached to a greater height in the tree)

Compatible Sensors

Sensors with analogue output signal:

- Dendrometer (all models)

- Temperature sensors (T-Series)

- Leaf temperature sensor (LAT-B2)

- T/RH air sensor (EM 14)

- Soil moisture sensor (SMT100)

- Light sensors (Par: EM 20; Pyranometer: EM 25)

Sensors with analogue output signal:

- Dendrometer (all models)

- Temperature sensors (T-Series)

- Leaf temperature sensor (LAT-B2)

- T/RH air sensor (EM 14)

- Soil moisture sensor (SMT100)

- Light sensors (Par: EM 20; Pyranometer: EM 25)

Special features/limitations

Small; robust, weatherproof metal box; cost-effective; easy to use; long battery life

Small; robust, weatherproof plastic box; wireless communication with mobile devices via Bluetooth; cost-effective; easy to use; long battery life

Number of measuring channels & measuring range

4 channels for 0 to 2.5 V

4 channels for 0 to 2.5 V

Recording interval

Adjustable between 1 sec and 18 hours (averaging possible)

Adjustable between 1 sec and 18 hours (averaging possible)

Storage capacity

4 MB (max. 1,900,000 measured values)

e.g.

For 4 channels and 30 minutes recording interval sufficient for 7,900 days

4 MB (max. 1,900,000 measured values)

e.g.

For 4 channels and 30 minutes recording interval sufficient for 7,900 days

Resolution

40 μV

e.g.:

Dendrometer, depending on the model: 0.2 to 1 μm

T-Series, LAT-B2: 1.6 * 10-3 ° C

40 μV

e.g.:

Dendrometer, depending on the model: 0.2 to 1 μm

T-Series, LAT-B2: 1.6 * 10-3 ° C

Accuracy

± 0.1 mV ± 0.1% of measured value

± 0.1 mV ± 0.1% of measured value

By the logger supplied sensor excitation voltage

2.5 V (switched, stabilized)

2.5 V (switched, stabilized)

Logger powering & battery life

2x AAA cell, user-replaceable

Battery life: typically 1 year with a logging interval of 1 minute

2x AAA cell, user-replaceable

Battery Life: typically 1 year with a logging interval of 1 minute and activated Bluetooth

Interface

USB to PC (Windows or MacOS)

Bluetooth Low Energy to Windows-PC, tablet or smartphone (Android or iOS); range up to 30 m line-of-sight

Operational conditions

Normal outdoor conditions, recording -20 to 70 ° C, 0 to 100% relative air humidity

Normal outdoor conditions; recording -20 to 70 ° C, 0 to 100% relative air humidity

Size and Weight

17x13x8 cm, 725 g (complete in metal protection with mounting plate)

17x13x8 cm, 600 g (complete in plastic protection with mounting plate)

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    Manual

    Technical data sheets

    Do you already know our references?

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    Accessories & Compatible Products:

    Compatible Sensors:

    • Dendrometer (all models)
    • Temperatursensoren (T-Serie)
    • Blattsensoren (LAT-Serie)
    • Luftfeuchtigkeits- und Lufttemperatursensor (EM 14)
    • Bodenfeuchtesensoren
    • Light sensors (PAR: EM 20; Pyranometer: EM 25)

    Contact

    You need a quotation, have questions about a product, or need extensive technical advice in the context of your project planning. Starting with an initial determination of your needs, through the detailed planning of the required measurement equipment and data transmission technology, up to professional implementation on site, we are at your disposal at any time with advice and action.

    General information on order processing

    Thank you for your interest in our products and services! Here you will find important information about the ordering process:

    To our international customers: Please note, we ship worldwide! If we do not currently have a listed distributor in your country (a list can be found here) , please feel free to contact us directly.

    Assessment of your needs

    With your consideration and input, we determine which of our products best meet your needs. We are also happy to design fully-integrated measuring stations (plant, climate, soil sensors), including an independent power supply and mobile data transmission, depending on your requirements.

    Do you require our assistance before placing an order?

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    Are you already familiar with our products and know exactly what you need?

    Perfect, then just write us an email! In your order, please state the diameter of your measuring objects in addition to the required cable lengths.

    Your contact details and Assessment of your needs

    Like so many things, everything started with an idea ...

    In the case of the plant scientist and founder of ECOMATIK, Dr. Liu, it was the idea that modern measurement technology should enable crucial plant physiological parameters to be measured directly, precisely and with high temporal resolution on the plant itself. It was obvious to him that there is an information potential of immense value in the detailed understanding of immediate reactions of plants to their environment...