Netafim SPINNET Bedienungsanleitung

V 001.01 - 2018

SPINNET

™

VIBRONET

™

COOLNET PRO

™

MISTNET

™

SPINNET

™

MICRO-SPRINKLERS/EMITTERS

UPSIDE-DOWN

HANDBOOK

NO PORTION OF THIS PUBLICATION MAY BE REPRODUCED, STORED IN AN AUTOMATED DATA FILE OR MADE PUBLIC

IN ANY FORM OR BY ANY MEANS, WHETHER ELECTRONIC, MECHANICAL, BY PHOTOCOPYING, RECORDING OR IN ANY

OTHER MANNER WITHOUT THE PRIOR WRITTEN CONSENT OF NETAFIM™.

THIS DOCUMENT IS PRESENTED WITH THE EXCLUSIVE AIM OF NOTIFYING SELECTED POTENTIAL CLIENTS REGARDING

THE NETAFIM™ DRIP IRRIGATION SYSTEM. RECEIPT OR THE POSSESSION OF THIS DOCUMENT SHALL NOT IMPLY

RIGHTS AND ITS CONTENTS SHALL BE VIEWED SOLELY AS A PROPOSAL. THIS DOCUMENT SHALL NOT IN ANY WAY

SERVE AS A GUARANTEE, NOR IS IT LEGALLY BINDING.

NETAFIM™ ENDEAVORS TO PROVIDE QUALITY, ACCURATE AND DETAILED INFORMATION. NEVERTHELESS, NETAFIM™

CANNOT ACCEPT ANY RESPONSIBILITY FOR RELIANCE ON THE INFORMATION PROVIDED HEREIN, AND THE USER

IS ADVISED TO OBTAIN THE PROFESSIONAL ADVICE OF NETAFIM™ AND/OR ITS AUTHORIZED REPRESENTATIVES

INDEPENDENTLY. THERE IS NO UNDERTAKING BY NETAFIM™ THAT THE INFORMATION PROVIDED HEREIN, OR ANY

PART THEREOF, IS ACCURATE, COMPLETE OR UP TO DATE.

MENTION OF THIRD PARTY PRODUCTS IS FOR SOLELY INFORMATIONAL PURPOSES AND CONSTITUTES NEITHER AN

ENDORSEMENT NOR A RECOMMENDATION. NETAFIM™ DOES NOT ASSUME ANY RESPONSIBILITY WITH RESPECT TO

THE USE OR THE PROVISIONS OF SUCH PRODUCTS.

NETAFIM™ SHALL NOT ACCEPT RESPONSIBILITY FOR ANY DAMAGE OR LOSS THAT MAY OCCUR FROM THE USE OF

ITS PRODUCTS OR THIS DOCUMENT.

NETAFIM™ RESERVES THE RIGHT TO MAKE CHANGES AND IMPROVEMENTS TO ITS PRODUCTS AND/OR THE

ASSOCIATED DOCUMENTATION WITHOUT PRIOR NOTICE.

FOREIGN LANGUAGES

In the event that you are reading this manual in a language other than English, you hereby

acknowledge and agree that the English language version shall prevail in case of inconsistency or

contradiction in interpretation or translation.

CONTENTS

Introduction

Use of symbols

Objectives of this document

Safety instructions

Micro-sprinkler/emitter selection

Introduction

Uses

Applications

Irrigation

Germination

Cooling

Rooting

Humidity increasing

Terms and concepts

Precipitation rate (Pr)

Water distribution uniformity

Max. length of distribution pipe

Head loss in the hanging micro-tube

Sprinkler water trajectory

Selecting a micro-sprinkler/emitter

Micro-sprinkler/emitter selection table

Micro-sprinklers/emitters assortment

Features and beneﬁts

Drip-less and shadow-less emitters

Durability and low maintenance

Compliance with standard requirements

Anti-drain (AD) valves

SpinNet™

Description

Applications

Speciﬁcations

Filtration

Features and beneﬁts

Performance

Water trajectory

Distribution uniformity

Head loss

SpinNet™ SD

Description

Applications

Speciﬁcations

Filtration

Features and beneﬁts

Performance

Water trajectory

Distribution uniformity

Head loss

A particular case

VibroNet™

Description

Applications

Speciﬁcations

Filtration

Features and beneﬁts

Performance

Water trajectory

Distribution uniformity

Head loss

CoolNet Pro™

Description

Applications

Three different conﬁgurations

Necessary terms

Mister vs. Fogger

Speciﬁcations

Filtration

Features and beneﬁts

Performance

Water trajectory

Head loss

Applications

Cooling

Rooting

Humidity increasing

MistNet™

Description

Applications

Speciﬁcations

Filtration

Features and beneﬁts

Performance

Water trajectory

Accessories and complementary products

Introduction

Anti-drain (AD) valve

Stabilizer (serves also as a tool)

PE ﬂexible tube

Top connectors

Accessory connection

Appendix

Max. distribution pipe length

Warranty

4 UPSIDE-DOWN MICRO-EMITTERS HANDBOOK

INTRODUCTION

ELECTRICAL HAZARD

The following warning(s) contains instructions aimed at preventing bodily injury or direct damage

to the irrigation system components in the presence of electricity.

The symbols used in this document refer to the following:

WARNING

Instructions aimed at preventing bodily injury or direct damage to the crops and/or the irrigation

system.

CAUTION

Pertinent guidelines aimed at preventing unwanted system operation, installation or conditions.

Failure to follow said guidelines is liable to void the product's warranty.

ATTENTION

The subsequent text contains recommendations aimed at enhancing the efﬁciency of usage of

the instructions contained in the document.

NOTE

Speciﬁc points aimed at emphasizing a certain aspect of the operation or installation of the

system.

SAFETY FOOTWEAR

The subsequent instructions are aimed at preventing foot injury.

TIP

The following offers clariﬁcation, suggestions or useful information.

ACID HAZARD

The following warning(s) contains instructions aimed at preventing bodily injury or direct damage

to the crops and/or the irrigation system in the presence of acid.

PROTECTIVE EQUIPMENT

The subsequent instructions are aimed at preventing damage to health or bodily injury in

the presence of nutrients, acid or chemicals.

EXAMPLE

The following offers an example to clarify the operation of the settings, method of operation or

installation.

The values used in these examples are hypothetical and should not be applied to your own

situation.

UPSIDE-DOWN MICRO-EMITTERS HANDBOOK 5

Objectives of this document

This document's purpose is to present the basic concepts regarding upside down micro-sprinklers/emitter

systems for protected crops, to familiarize the reader with the system components and their functions,

and to provide an understanding of the parameters by which to select the optimal system for each

application.

It is intended for Netaﬁm's personnel, its representatives and agents across the globe and for its clients,

their decision makers, managers and operational personnel.

The importance of thorough knowledge of the subjects discussed in this document for the selection and

effective operation of the micro-sprinkler/emitter system cannot be overemphasized.

ATTENTION

This document is not a user manual. For detailed instructions pertaining to the operation,

maintenance and troubleshooting of the components of the Netaﬁm™ micro-sprinkler/emitter

system, refer to the user manuals and documentation of each component supplied with the system.

This document should be available to the farm's personnel at any time for consultation on subjects

concerning the correct application and current operation of the micro-sprinkler/emitter system.

In addition, Netaﬁm's irrigation products department is at the client's service for any inquiry, advice or

additional information required after reading this document.

Safety instructions

All local safety regulations must be applied when installing, operating, maintaining and troubleshooting the

Netaﬁm™ micro-sprinkler/emitter system and its components.

INTRODUCTION

WARNING

When handling nutrients, acids and chemicals, always use protective equipment,

gloves and goggles.

WARNING

In an agricultural environment - always wear protective footwear.

WARNING

Measures must be taken to prevent the inﬁltration of nutrients, acids and chemicals into the water

source.

6 UPSIDE-DOWN MICRO-EMITTERS HANDBOOK

MICRO-SPRINKLER/EMITTER SELECTION

Introduction

Netaﬁm™ micro-sprinklers/emitters have been uniquely designed for upside-down installations, and

are the ideal solution for irrigation, cooling and humidity enhancing for protected crops in greenhouses,

tunnels, nurseries and net-houses. Our products enable unprecedented watering uniformity in both

standard full overlap installation and with our traditional "strip of micro-sprinklers/emitters".

The versatile Netaﬁm™ line of micro-sprinklers/emitters covers a broad scope of applications; thereby

simplifying the design process. Whether you are designing a new application or retroﬁtting an existing

system, our micro-sprinklers/emitters offer highly reliable solutions for all your needs.

Uses

Protected crops in

•Greenhouses •Nurseries •Nethouses •Tunnels

Applications

Irrigation

Full coverage

There is no doubt that in most cases plant irrigation and fertilization is much more efﬁcient and effective

when accomplished using drip systems. However, there are situations in which the farmer will choose to

use micro-sprinklers to perform this action, especially with protected crops. For instance, when there is a

very large quantity of potted plants per unit area, or when the crop is particularly dense and reaching each

plant with dripperlines would not be cost-effective. In such cases, the irrigation system must provide very

efﬁcient and uniform watering.

For this purpose, Netaﬁm™ proposes a network of SpinNet™ bridgeless micro-sprinklers (see page 19)

placed upside down (in the vast majority of protected crop applications) and by full overlap between the

wetted patterns produced by each emitter to create a uniform "rain" over the entire area.

Rectangular pattern Triangular pattern

UPSIDE-DOWN MICRO-EMITTERS HANDBOOK 7

MICRO-SPRINKLER/EMITTER SELECTION

Strip coverage

There are individual

cases, especially when

the crop is grown in

a tunnel or when the

grower wants to divide

one greenhouse span

into two separate

irrigation strips. In

such cases, only one

distribution pipe is

placed above the crop

and is not "assisted" by

micro-sprinklers on an

adjacent distribution

pipe.

For this purpose,

Netaﬁm™ has developed

a dedicated solution:

the SpinNet™ SD (shoulder distribution) micro-sprinkler (see page 23) that allows farmers to achieve

excellent distribution uniformity with a very high wetting accuracy (i.e. a very high percentage of the water

actually falls within the strip under irrigation), thus increasing water use efﬁciency.

Germination

Germination is the process in which a seed is planted shallowly (only a few millimeters deep) and the

substrate (soil, substrate or a mix of both) is irrigated so that the seed germinates and becomes a young

plant.

For germination the irrigation must:

•Be very gentle, so that the water droplets will not move small clods of the soil/substrate and leave the

seed exposed, thereby possibly inhibiting proper germination.

•Provide perfect distribution uniformity. Germination is usually carried out on tables/trays divided into

individual cells (the water cannot pass through the boundary between substrate zones). Thus, although

very gentle, the water droplets must be able to provide perfect distribution uniformity.

For this purpose, Netaﬁm™ proposes the VibroNet™ bridgeless micro emitter with vibrating action (see

page 29).

Cooling

Evaporative cooling (i.e. without contact between the water and the plants): a volume of air is cooled

by spraying very small droplets of water into the air. These droplets evaporate (thanks to the physical

attributes of condition equalization of objects when contacting each other). The droplets are at 100%

relative humidity (saturation) and the air inside the structure is at a lower relative humidity (the lower the

relative humidity of the air inside the structure, the more efﬁcient the cooling action). The droplets turn

from liquid to gas (evaporation). Here another physical property enters in action: For every gram of water

evaporating, 560 calories are consumed from the air, as a result the air is cooled (The smaller the droplets,

the more efﬁcient the evaporation resulting in a better cooling action).

For this purpose, Netaﬁm™ proposes the CoolNet Pro™ super-ﬁne mister (see page 31).

8 UPSIDE-DOWN MICRO-EMITTERS HANDBOOK

MICRO-SPRINKLER/EMITTER SELECTION

Terms and concepts

To select the appropriate micro-sprinkler system, one must be familiar with the following terms and concepts:

Precipitation rate (Pr)

Water distribution uniformity

• Christiansen Coefﬁcient of Uniformity (%CU)

• Distribution uniformity (%DU)

• Scheduling Coefﬁcient (SC)

Distribution pipe maximum length

Head loss in micro-tube and accessories

Micro-sprinkler/emitter water trajectory

A. Precipitation rate (Pr)

The average amount of water applied to the irrigated area during a speciﬁed period, measured in this

manual in mm/h (millimeters per hour) units.

Calculating Pr

Pr (mm/h) = Micro-sprinkler/emitter ﬂow rate (l/h) / [Spacing between micro-sprinklers/emitters in the

same distribution pipe (m) x Spacing between distribution pipes (m)]

EXAMPLE

Where:

Micro-sprinkler/emitter ﬂow rate 70 l/h

Spacing between micro-sprinklers/emitters on the same distribution pipes 2.0 m

Spacing between distribution pipes 2.5 m

70 / (2 x 2.5) = 14.0

Pr = 14.0 mm/h

Rooting

This is necessary when the farmer wants to increase growth by cutting. For this purpose, a moist air

volume is required. The plant should be grown in a humid environment to facilitate growth of the new

roots. The emitters chosen for this purpose must be able to increase humidity in a uniform manner.

For this purpose Netaﬁm™ proposes the CoolNet Pro™ super-ﬁne mister (see page 31).

Humidity increasing

In some cases, the farmer is required to increase the humidity in the structure (regardless of the two

actions mentioned above). For example, when planting/sowing new plants in a relatively cold period, to

perform this operation correctly, it is necessary to heat the air inside the structure. This will dry the air.

Therefore, to ensure the beginning of a proper and effective growth, moisture must be added to the air.

For this purpose, Netaﬁm™ proposes the CoolNet Pro™ super-ﬁne mister (see page 31).

UPSIDE-DOWN MICRO-EMITTERS HANDBOOK 9

MICRO-SPRINKLER/EMITTER SELECTION

B. Water distribution uniformity

It is of vital importance that the irrigation water is distributed as evenly as possible throughout the irrigated

area. Properly designed micro-sprinklers/emitters enable greater distribution uniformity.

• Good distribution uniformity contributes to

higher yield and a higher quality crop.

• Poor distribution uniformity reduces yield and

crop quality and may damage the soil/substrate.

Netaﬁm™ conducts rigorous tests to assess the distribution uniformity capacity of its micro-sprinklers/

emitters. The following is a brief summary of these testing procedures.

The water distribution uniformity survey: Setup and data collection

A 4 X 4 micro-sprinklers/emitters grid (16 micro-sprinklers/emitters) is set up according to the planned

layout - spacing between micro-sprinklers/emitters

in the same distribution pipe and spacing between

distribution pipes.

ATTENTION

The survey must be conducted on a ﬂat,

leveled and obstruction-free area.

Nine rectangular areas, each deﬁned by 4 micro-

sprinklers/emitters at its four corners are produced.

The center area is selected and a grid pattern

of rain gauges or catch cans is set up, with the

following distances between them each-

• 0.5 meter or less on both axes for

micro-sprinklers/emitters (ﬂow rate ≥ 30 l/h)

• 0.25 meter or less on both axes for

micro-sprinklers/emitters (ﬂow rate < 30 l/h)

ATTENTION

All the catch cans must be identical and placed in a leveled and stable position.

The system is operated for 1 hour under normal operating conditions.

ATTENTION

The effect of wind on distribution uniformity is unpredictable.

For an accurate measurement, the system must not be operated under windy conditions.

The level of the water collected in each gauge or can is measured and their results (in mm) noted as a

list, from the highest to the lowest.

Emitter

Catch cans

Distribution

pipe

10 UPSIDE-DOWN MICRO-EMITTERS HANDBOOK

MICRO-SPRINKLER/EMITTER SELECTION

There are 3 methods for calculating distribution uniformity:

• Christiansen Coefﬁcient of Uniformity (%CU) - known to produce the most ﬂattering results.

• Distribution uniformity (%DU) - known to be more rigorous than %CU.

• Scheduling Coefﬁcient (SC) - known to be the most rigorous method of all.

Christiansen Coefﬁcient of Uniformity (%CU)

The %CU is a measurement of uniformity, expressed as the average rate (%) of deviation from the overall

average application.

A perfectly uniform application is represented by a CU of 100%.

Lower uniformity applications are represented by lower percentages.

For micro-sprinkler/emitter irrigation of protected crops:

94% or higher Excellent uniformity

89% to 94% Very good uniformity

Lower than 89% Acceptable for certain low-value crops only

Limitation of the %CU method:

Due to the statistical nature calculation of the %CU method, it does not account for individual spots that

receive no water at all.

Calculating %CU

Gather the water levels previously collected in each gauge or can (mm) [a].

Sum all the numbers in column [a].

The sum is divided by the number of gauges or cans placed. This provides the average net application of

the surveyed area [b].

The average net application of the surveyed area [b] is subtracted from the amount of water collected

in each gauge or can (mm) [a]. Each result, whether lower or higher than the average net application, is

recorded as a positive number in column [c].

All application deviations [c] are summed up.

The sum is divided by the number of gauges/cans placed. This provides the average deviation from the

average net application of the surveyed area [d].

The average deviation from the average net application [d] is divided by the average net application of

the surveyed area [b] and the result are subtracted from 1. This provides the CU of the surveyed area as

a percentage (%) [e].

NOTE

For simplicity, the examples below are based on 20 gauges/cans placed.

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere Netafim Bewässerungssystem Handbücher

Netafim

Netafim NMC-JUNIOR PRO Bedienungsanleitung

Netafim

Netafim D-Net 8550 Bedienungsanleitung

Netafim

Netafim SMART & GREEN 429861 Bedienungsanleitung

Netafim

Netafim SMART & GREEN 429854 Bedienungsanleitung

Netafim

Netafim NETBEAT Bedienungsanleitung

Netafim

Netafim MegaNet 15D Bedienungsanleitung

Netafim

Netafim TECHLINE CV Bedienungsanleitung

Netafim

Netafim nmc-pro Bedienungsanleitung

Netafim

Netafim EFLOW CNL XR Bedienungsanleitung

Netafim

Netafim D-Net 6550 Bedienungsanleitung

Netafim

Netafim nmc-pro Bedienungsanleitung

Netafim

Netafim GYRONET TURBO Bedienungsanleitung

Netafim

Netafim TECHLINE AS Leitfaden

Beliebte Bewässerungssystem Handbücher anderer Marken

Hunter

Hunter Institutional Series Bedienungsanleitung

Cellfast

Cellfast 52-305 Bedienungsanleitung

Tyco Fire Product

Tyco Fire Product Star Galaxy SGQR Bedienungsanleitung

Tyco Fire Product

Tyco Fire Product CENTRAL A Bedienungsanleitung

Oral Care Technologies

Oral Care Technologies Hydro Floss Bedienungsanleitung

Reliable

Reliable F1-300 Bedienungsanleitung

Tyco Fire Product

Tyco Fire Product Gem F892 Bedienungsanleitung

Irrigation-Mart

Irrigation-Mart KIT-GK100-RV-B Bedienungsanleitung

Tyco

Tyco CC3 Bedienungsanleitung

Reliable

Reliable F4FR Bedienungsanleitung

OpenSprinkler

OpenSprinkler OSPi Bedienungsanleitung

EINHELL

EINHELL GE-WW 5537 E Bedienungsanleitung

Valley

Valley Bender160 Bedienungsanleitung

Reliable

Reliable F1FR42 Series Bedienungsanleitung

Reliable

Reliable F1FR-300 Bedienungsanleitung

Toro

Toro 730 Series Kurzanleitung

Eden

Eden 97063-EDAMZ Bedienungsanleitung

Tyco

Tyco TY-L Series Bedienungsanleitung