Notes
Battery use:
the GP1 battery can be changed quickly without losing program settings
or data, but no readings will be taken and no control of irrigation will occur while the
battery is removed.
A standard PP3 alkaline battery will power the GP1 and SM300 for more than 4 months
when recording at 30 minute intervals. Check the battery voltage from time to time in
DeltaLINK
and replace when below 6 Volts. See the
GP1 Quick Start Guide
for
further detail.
Sealing:
the SM300, GP1 and all connectors are sealed to an appropriate standard,
but to maintain this sealing you should:
Take care when attaching cables to ensure that the connectors are clean,
undamaged and properly aligned before pushing the parts together. Screw
together firmly to ensure the connection is water-tight.
Ensure that all cable glands and cover screws are fully tightened.
Where possible avoid placing the GP1 directly underneath irrigation nozzles.
Replace the GP1 desiccant bags annually.
Status LED:
the GP1 LED flashes twice every 10 seconds when it is logging normally.
It will flash four times instead if it detects a problem.
Care and Safety
The rods of the SM300 are sharp in order to ease insertion. Take care and
follow handling precautions.
Avoid touching the rods or exposing them to other sources of static damage.
Keep the SM300 in its protective tube when not in use.
Do not pull the sensor out of the soil by its cable.
If you feel strong resistance when inserting the SM300 into soil, it is likely you
have encountered a stone or a root. Stop pushing and re-insert at a new
location.
Delta-T Devices Ltd
130 Low Road, Burwell
Cambridge CB25 0EJ
UK
Tel
:
+44 1638 742922
Fax
:
+44 1638 743155
web
