Ecomatik DL 18 Bedienungsanleitung

DL 18

Data Logger

ECOMATIK GmbH

Muenchner Str. 23

D-85221 Dachau/Germany

Tel.: +49 8131 260 738

Fax: +49 8131 260 736

e-mail: [email protected]

website: www.ecomatik.de

User Manual

Version 2019

Dendrometer Data Logger DL18

1. Introduction

Thank you for purchasing our ECOMATIK DL 18 data logger set. The DL 18 is an out-

standing choice to be used in combination with ECOMATIK dendrometers (all models),

temperature sensors (leaf: LAT-B2; air, surface, tissue, soil: T-Surface/-Tissue/-Soil), air

temperature and humidity sensor (T/RH-Sens), soil moisture sensor (EM 35) or light sen-

sors (PAR: EM 20, Pyranometer: EM 25). Using the four channels of the DL 18 you can

operate up to 4 dendrometers, or other combinations of the above listed sensors. The

logger is powered by two user replaceable batteries. With standard use the batteries will

last more than one year.

2. Components

After unpacking you should have following items:

1 dendrometer logger with two AAA alkaline batteries

1 weather box for using the logger under outdoor conditions

1 bag of desiccant (dry silica gel)

2 two wood screws for mounting the logger

Fig. 1 Dendrometer Data Logger (DL18)

If you have purchased software, you will additionally receive following items:

1 Software USB Stick

1 logger-computer communication cable

Fig. 2 Software and Data Cable

Logger Box

Logger

Batteries

Wood Screws

Silica Gel

Dendrometer Data Logger DL18

3. Safety information and Maintenance

For the functionality it is very important to protect the logger against moisture. Screw the

cable gland firmly and replace the silica gel if necessary. In tropical regions the protection

from moisture is particularly important.

In normal use the battery lasts for more than a year. But remember, some batteries have

poor quality. Therefore, it is useful to log the battery voltage. Check the battery indicator at

data download. If you are planning a long measurement period under low temperature,

you should use Lithium batteries instead of provided alkaline batteries. Lithium battery has

much better properties at low temperature.

4. Connecting dendrometers to the logger

As the fig. 3 shows, you can connect up to 4 dendrometers to the logger.

It is very important to protect the logger against moisture. Screw the cable gland firmly,

and never remove the rubber plug from the unused cable gland.

Fig. 3 Connecting dendrometers to the logger

5. Installing the software

To install the software from the USB Stick:

Insert the stick in your computer, select the folder

Ecomatik\software\windows\Hoboware_Free_Setup.exe for Windows computer

or ecomatik\software\mac\Hoboware_Free_Installer.dmg for Mac computer

6. Configuring the logger

The software has many features. For dendrometers you mainly need only 4 functions (fig.

4):

Lauch Logger: Configure the logger.

Data Readout: Download measured data.

Logger Status: Shows what the logger is doing.

Data Export: Export data in CSV format for processing with Excel etc.

Dendrometer Data Logger DL18

Fig. 4 Main functions for dendrometer use

Launching logger:

Connect the logger to USB port

Click the Launch icon on the toolbar (This displays the logger’s Launch window looking

similar to the following)

Fig. 5 Launch window

Launch

Logger

Data

Readout

Logger

Satus

Data

Export

Serial No of Logger connected

Dendrometer Data Logger DL18

Select measuring function Adapter Cable, Cable-2.5-Stereo (0-2.5 Volts DC) (fig. 6)

Fig. 6 Measuring mode for dendrometer: Cable-2.5-Stereo (0-2.5 Volts DC)

Select Logging Interval and other parameters

Fig. 7 A typical configuration for 4 dendrometers without Scaling (LCD units V)

Click Delayed Start for Lauching Logger.

7. Data conversion

The measured data with previous configuration (fig. 7) are in units of volts. For

dendrometers there are 2 ways to convert the raw data in micrometer: With your

personal computer or with the scaling function of the data logger.

Data conversion with personal computer

The raw dendrometer data from the logger has the unit Volt. You get micrometers values

by using the following formula:

Dendrometer Data Logger DL18

For Dendrometer types DR1, DR3, DD-L1, DD-S1, DD-S2, DRO, DRW, DDW, DC1, DV

Micrometer = raw data (V) x 4400

For Dendrometer types DF1, DC2

Micrometer = raw data (V) x 6000

For Dendrometer type DC3, DD-L2, DR2, DF2

Micrometer = raw data (V) x 10160

For Dendrometer type DC4, DD-L3, DF3

Micrometer = raw data (V) x 20320

For other sensor types, e.g. leaf temperature (LAT-B2), surface, tissue or soil temperature

(T-Surface/-Tissue/-Soil), air temperature/humidity (T/RH-Sens) or soil moisture, raw sen-

sor signal will also be recorded in volts. Due to the complex conversion functions of these

sensor types, raw sensor values have to be converted manually after data download to

your personal computer. For conversion, please use the conversion functions as given in

the user’s manual of the respective sensor (Excel programs for data conversion are avail-

able on request).

Data conversion with the scaling function of the data logger

The scaling function of the DL 18 can be used to automatically convert raw volt signals

from dendrometer measurements into micrometers. For channels connected with other

sensor types (LAT-B2, T-Surface/-Tissue/-Soil, T/RH-Sens, soil moisture), please do not

use the scaling function. In those cases the raw sensor signals will be recorded in volts

and have to be converted manually after data download.

To enable the scaling function for dendrometers, click the scaling button (fig. 7, right side)

and enter the following data in the table “Linear Scaling Assistant”.

Change the value in this field as follows. Other 3 data fields remain un-

changed.

11,000.00000 for DR1, DR3, DD-L1, DD-S1, DD-S2, DRO, DRW, DDW, DC1, DV

15,000.00000 for DF1, DC2

25,400.00000 for DC3, DD-L2, DR2, DF2

50,800.00000 for DC4, DD-L3, DF3

Fig. 8 Enter linearization data

Dendrometer Data Logger DL18

Confirm the input and back to the Launch logger window.

Click Delayed Start for Lauching Logger (Fig. 9).

Fig. 9 A typical configuration for 4 dendrometers with scaling (LCD units micrometer)

8. Technical Specifications

Memory

1 900 000 readings

If you connect 4 dendrometers, and collect data every 30 minutes, the

memory will store data of 7900 days

Resolution

0.2 µm for Dendrometer types:

DR1, DR3, DD-L1, DD-S1, DD-S2, DRO, DRW, DDW, DC1, DV

0.3 µm for Dendrometer types:

DC2, DF1

0.5 µm for Dendrometer type:

DC3, DD-L2, DR2, DF2

1.0 µm for Dendrometer type:

DC4, DD-L3, DF3

Accuracy

±0.1% of reading

Interface

USB interface to PC

Channel

4, for connecting up to 4 dendrometers

Logging Interval

1 sec. to 18 hours, user selectable

Battery Life

1 year typical with logging rate of 1 minute and sampling interval of 15

seconds or greater, user replaceable 2 AAA battery

Environment

Logging -20° to 70°C (-4 to 158°F); 0 to 95% RH (non-condensing)

Other compatible

Sensor types

- soil moisture (EM 35)

- leaf temperature (LAT-B2)

- surface, tissue or soil temperature (T-Surface/-Tissue/-Soil)

- air temperature/humidity (T/RH-Sens)

- light (PAR: EM 20, Pyranometer: EM 25)

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