Netafim NETAJET 4G User Manual

NETAJET
™
4G USER MANUAL 7
DESCRIPTION
Analog dosing channel
The NetaJet™ 4G is the first fertilizer-dosing system equipped with Netafim's unique innovative analog
dosing channel.
The analog dosing channel is the long-awaited solution for very accurate and reliable EC/pH control for
Nutrigation™ of high-value greenhouse crops.
The analog dosing channel is equipped with a servo motor capable of continuous variable opening
from 0 to 100%. This unique feature allows unprecedented precise and seamless Nutrigation™.
Advantages
• Ultra-high precision
• Smooth and stable hydraulic operation
• No fluctuations
• Fast EC/pH set-point reaching
• Short stabilization time
• Enables short Nutrigation™ cycles
• No risk of cavitation damage to the booster
Stabilization time
The analog dosing channel offers the benefit of a
significantly shorter stabilization time compared with
the digital (pulsating) dosing channel (up to 50%).
This is particularly beneficial when performing short
Nutrigation™ cycles typical of greenhouse crops.
• X = Analog (continuous-variable) dosing channel
• Y = Digital (pulsating) dosing channel
Dual dosing channel
The NetaJet™ 4G Octa mode (8 dosing channels) includes 3 dual dosing channel.
The dual dosing channel is applicable with 50 l/h (13 GPH) and 600 l/h (158 GPH) Venturis.
Dual dosing channel schematic diagram
pH
Time (sec)
10
9
8
7
6
5
4
3
2
1
0
205 0
X
Y
Source water
352510 403015 45 50
Analog (continuous-variable) dosing channel
Digital (pulsating) dosing channel
pH set point
Digital (ON/OFF) vs. analog dosing channel
performances
A
Rotameter
B
Needle valve
C
Dosing valve
D
Check valve
E
Venturi
A
B
CDE
A
B
CDE
CAUTION
There are fertilizer combinations that should never be used in any concentration in the dual dosing
channel! (see CAUTION, page 5)

Netafim NETAJET 4G Specifications

General

Brand	Netafim
Model	NETAJET 4G
Category	Industrial Equipment
Language	English