Product Care And Maintenance; Legal Notices - Delta-T Devices DL6 Quick Start Manual

8 Specifications, Service and Notices
Inputs/outputs
Analogue channels
(soil moisture)
Analogue channels
(DC voltage)
Temperature
channels
Event counter
channel
Sensor excitation
Alarm out
Note 1: Alarm relay rated 2A but the fuse is 1A. Alarm out should support brief 2A
Feature
Logging frequency
Accelerated logging
Reading capacity
PC connection
Battery lifetime
Environmental

Product Care and Maintenance

The battery can be removed for 10 hours without losing program settings or data, but no
additional data will be logged while the battery is removed. Change the battery when the Power
indicated in the Logger window of DeltaLINK is under 6.6V.
If the battery goes completely flat the LED will not flash. Put in new batteries. You may need to
press the Reset button inside the logger then update the clock in DeltaLINK Logger window.
Use Lithium batteries for extended battery life and the full temperature range of the logger.
A lithium battery will typically last 3 to 5 times longer than a good quality alkaline.
Use of rechargeable or zinc-chloride batteries is not recommended for performance.
Desiccant: If indicator paper in the lid turns pink change or regenerate the white desiccant bag.
Regenerate desiccant at 120ºC for 4 hours. Seal desiccant in a plastic bag when logger is open.

Legal Notices

This product uses software code. It should not be used in safety-critical applications or where consequential
loss may occur. It is the responsibility of the user to ensure appropriate safeguards are in place for regularly
monitoring and checking the equipment.
In no event shall Delta-T's liability exceed the selling price of the product. Delta-T is not liable for indirect,
incidental or consequential damages in connection with the use of equipment, including but not limited to: data
loss, vegetation loss, loss of energy or water, cost of substitute equipment or services, property damage, or
personal injury that results from installer's negligence. The customer agrees to the limitations and exclusions of
liability by purchase or use of this product.
See also Product Usage.pdf in the online Document Library folder.
The DL6 product is CE compliant, conforming to EN61326 (1997).
Range
#
3 -3
6 0.0 - 0.1 m .m
3 -3
6 0.1 - 0.6 m .m
-10 to 1150 mV
Common mode
6
range
-0.2 to 3V
sensor -20 to
1
+60°C
1 <50Hz, contact closure or pulse logic inputs
6 5 - 9V at 120mA
1 1A, 25V DC/AC
Full scale
1s to 24hr User selectable with accelerated logging option
1s to 24hr User selected - rain gauge or event triggered
16k readings Auto-wrap or stop logging - user selectable
1 Via RS232 connection (USB to RS232 converters are available)
1yr 6 alkaline AA cells last for up to one year (depends on logging frequency)
-20 to +60°C Operating
IP67
-10 to +50°C Full accuracy
Delta-T Devices Ltd
130 Low Road, Burwell
Cambridge CB25 0EJ
UK
DL6 Accuracy
logger -10 to +50C
0.001 m
3 -3
.m
1% of reading
(0.3mV + 0.2% of
reading)
+ common mode error:
0.25mV/V
0.4C
Notes
Tel:
Fax:
e-mail:
web:
Notes
Applicable to : ML3, SM300 and
PR2 (with up to 100m cable)
PR1 (up to 25m cable)
Mineral & organic soil calibrations
Logger can read either volumetric
water content or voltage (not both)
Using ST1 or ST2 or other 2K
thermistor
Max 1mm/second if using RG2 rain
gauge (0.2mm/tip)
Uses internal battery voltage supply
Isolated relay switching 2A max
+44 1638 742922
+44 1638 743155
sales@delta-t.co.uk
www.delta-t.co.uk
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