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Aquaflex Soil Moisture Sensor (SI.60)
These Aquaflex sensors can be connected to:
An Aquaflex Datalogger (sensor part number SI.60-D) and both Soil Moisture and
Temperature may be logged, or:
Any datalogger, irrigation controller, weather station etc that accepts a frequency (pulse)
input. In this case only Soil Moisture is available from the sensor.
Sensor Location
It is important that the sensor serial number and the location of the sensor are recorded:
Serial Number _____________ Date Installed _____________ Location _________________________________
Sensor Installation
Recommendations for sensor installation are given below. Your local AQUAFLEX Distributor
will be pleased to give advice about the most suitable method of installation for your
application.
There are two main methods for installing the sensors, the choice of which to uses depends
on the required installation depth for the sensor.
For shallow installation (eg turf applications) the sensor can be simply 'slit' into the turf.
For deeper installations a trench must be dug for the sensor.
Shallow Installations (eg Turf)
Mark where the sensor is to be installed with a string line. Position the sensor where it
can be easily located in future – eg on a marker line on a sports field or at the edge of a
golf green marked by sight markers.
Cut a slit to the desired depth (eg 75 to 100mm) for the sensor. A slightly larger cavity is
needed for the electronics block at the cable end of the sensor.
Prepare some method for running the round data cable between the sensor and its
destination (eg a data logger or irrigation controller etc). This might be an additional long
slit in the turf, or a shallow trench etc. This should be sufficiently deep to prevent
damage to the buried data cable.
Push the flat sensor cable into the slit in the turf on its edge to the desired depth.
Tamp down the slits in the turf and sprinkle fine sand or topsoil into the slit, packing it in
as much as possible to avoid air pockets.
Water the turf well to 'bed' the sensor in. Roll the ground if possible
Run the data cable to its destination.
AF043-01
Revision Date: 14 March, 2001
-User Manual-
1
US Patent 5148125
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Table of Contents
Summary of Contents for AquaFlex SI.60
- Page 1 -User Manual- These Aquaflex sensors can be connected to: An Aquaflex Datalogger (sensor part number SI.60-D) and both Soil Moisture and Temperature may be logged, or: Any datalogger, irrigation controller, weather station etc that accepts a frequency (pulse) input.
- Page 2 Run string line and cut a slit in turf Push sensor to desired depth Completed Installation Deeper Installations (eg Agriculture or Vineyard) For deeper installations a trench should to be dug to the desired depth for the sensor Ensure there is a layer of loose soil in the bottom of the trench.
- Page 3 All sensor power and ground connections are connected to the power supply terminals. Conditions of Use Aquaflex must be installed as specified. Use of Aquaflex data is entirely at the discretion of the user and should therefore be subject to current best practice principles of soil moisture management and agronomic management.
- Page 4 While power is applied the sensor takes one measurement every minute. The model SI.60 sensor signal has an output designed for connection to low level electronic circuits only. For devices requiring a clean contact input or higher voltages, use the Aquaflex Frequency Interface (SI.80) which converts the low level signal to a relay output.
- Page 5 1. Sand, silt and sandy or silty loam soils 2. Clay and clay loams. Aquaflex Frequency Output Sensor Calibration Graph 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130...
- Page 6 Critical sensor settings have been lost. Contact your distributor. Conditions of Use Aquaflex must be installed as specified. Use of Aquaflex data is entirely at the discretion of the user and should therefore be subject to current best practice principles of soil moisture management and agronomic management.
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