Hanna Instruments HI 8050 User Manual

Page 44

NOTE

TE::::: These settings are for the EC fertilizer control mode only.

EC DIFF CTRL CFG – S40

Prog 01

EC differential: Y

Ideal ECIn : 00.5mS

EC DIFF CTRL CFG S40

This panel allows the setting of differential EC control. Differential control is a
EC control mode where the EC reference is incremented with the value that the
EC of incoming water exceeds the ideal EC of the incoming water. This mode
is used to dose the same amount of fertilizers in irrigation water even if some
other substances are present in the input water that increase the EC of input
water over its normal (ideal) value. This panel displays and allows the setting
of the following parameters:
− Ideal ECin

Ideal ECin

Ideal ECin – The normal EC value of the input water.

− EC differential

EC differential

EC differential – when set to ‘Y’ the differential EC control mode is acti-

vated.

NOTE

TE::::: If incoming water EC is below the ideal EC setpoint, the EC reference

is decreased so that the amount of fertilizer remains constant.

RATIOMETRIC CTRL – S41

Tank:Fert1 Prog:01

Amnt: 50 g/L Vol:Y

Conc: 000 g/L

RATIOMETRIC CTRL S41

This panel is used to set the ratiometric control mode for fertilization. The
ratiometric control can work in weight or in volume. In volume one just to
specify the amount of fertilizer solution volume needed in the irrigation water
for that program (mL/L). In the weight mode the amount of active substance
weight and the concentration (g/L) of fertilizer solution needs to be specified.
The fertilizer tank number indexes this panel. This panel displays and allows
the setting of the following parameters:
− TTTTTank

ank

ank - Panel index. Specify the fertilizer for which is made the dosage.

− Prog

Prog

Prog – Current selected program. Represents the program for which the

fertilizer prescription is made.

− Amnt

Amnt

Amnt – the fertilizer amount in solution volume or in weight of active sub-

stance.

− VVVVVol

ol – if set ‘Y’ the ratiometric control is made in volume dosing, if set to ‘N’ the

ratiometric control is made dosing weight of active substance of fertilizer.

This manual is related to the following products:

HI 8060