ExplanationAbbreviation / term
Water having a relative low EC value (no or hardly any fertilisers), such as rain water,
groundwater, drinking-water, well water and reversed osmosis water
Fresh water
High Breaking Capacity, a type of fuseHBC
Input/OutputI/O
Module with digital inputs, analogue inputs and/or digital outputs to which sensors,
measuring equipment and actuators can be connected.
I/O module
Network where the Connext or Intégro process computer and the I/O modules
exchange data.
I/O net
Refers to the British system of units, e.g. for dimensions (e.g. inches). This system
is different from the metric system.
Imperial
The unit supplies the irrigation water to a stock tank or silo. From there, a separate
system handles the irrigation.
Indirect distribution
Water to which fertilisers and acid or lye are added, so that it has the desired EC
and pH value.
Irrigation water
Calibration parameter of a litre counter: the volume (in l) per pulse. This factor is
not only determined by the design of the flow sensor, but also by the internal
dimensions of the T-piece to which this sensor is screwed and the depth to which
the sensor is inserted in the T-piece.
K-factor
Sensor installed in a water tank or silo. The sensor provides an analogue signal,
indicating the water level as a percentage. The level sensor must be calibrated on
a regular basis. (See also level switch and float switch)
Level sensor
Switch installed in a water tank or silo. The level switch transmits a digital signal
when the water reaches a certain level. (See also level sensor and float switch)
Level switch
A type of light sensor to measure sunlight in kilolux (klux) over the visible part of
the spectrum (wave length 400 - 800 nm)
Linear light sensor
See "flowsensor".Litre counter
Anticipating by the process computer on a recipe change by stopping the preparation
of new irrigation water on time. This causes the stock in the mixing tank to be used
up to the minimum level and the new recipe being available within less time.
Mixing tank level reduction
Electric protection, based on a thermal working principle, which switches off the
(pump) motor when it consumes too much power. The motor protection can be
reset after cooling down. The motor protection resides in the cabinet, not on the
pump.
Motor protection
The part of a venturi or sprinkler that is responsible for the operationNozzle
Negative temperature coefficient, refers to a type of temperature sensorNTC
Proportional/Integrating, refers to a type of control where the correction signal
consists of a proportional component (correction signal directly proportional to
the deviation) and an integrating component (correction signal increases the longer
the deviation persists). The control is adjusted by the P and I factors.
P/I
degree of acidity (negative logarithm of the concentration of acid particles (H
+
))
pH
Printed circuit boardPCB
Programmable system device, a chip into which system software is programmed,
amongst other things
PSD
Dose of sunlight (radiation intensity integrated over a period of time, in term of
J/m²) that is received over a specific period of time.
Radiation sum
With a report alarm, an alarm is only reported. With a stop alarm, the process is
also aborted.
Report alarm/stop alarm
To fill up the sand filter with water so that the sand bed becomes homogeneous
and the filter ready for use.
(to) Rinse (a sand filter)
A type of flow meter that is visually readable. A rotameter is based on a float body
that is pushed up by the upwards flowing liquid in a transparent tapered pipe.
Rotameter
The layer of sand in a sand filterSand bed
Menu or window with settings and/or reports within the use interface of the Connext
and Intégro software. The sections are uniquely coded (e.g. I420.5 and M430) and
the data is arranged in tables with rows (lines) and one or more columns.
Section
The reproductive capacity of only some of the types of micro-organisms is disabled
(for instance, after selective disinfection fungi and nematodes can no longer multiply,
but viruses may still be able to. As long as the corresponding viruses are not harmful
to the crop, this is not a problem.) See also “total disinfection”.
Selective disinfection
Filling a sand filter with water in such a way that the bed of sand is even and the
filter is ready for use. The dirt that has come from the bottom of the sand filter
after the settlement is transported to the drain water tank.
Settlement of sand filter
63NutriJet - user - 00.002
Appendices
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