How to set up an electronic watering timer arm. Water timer
Original reviews of the Eurolos biological treatment septic tanks on the Internet.
Positive experience It is not the first time that we have become clients of EuroLos, in particular, we have bought BIO and ECO installations and we want to express our gratitude to the company, as indeed for ... EUGENE, VILLAGE OF THE STATEHOUSE OF RAMENSKOE
Not worth saving WITH THANKS, VICTORIA, VILLAGE ORLOVO
Comfort for country house Thank you for the installation, it so happened that we are contacting for the second time. I express my gratitude to your guys who assembled the installation for my house. ... VIKENTY SERGEEVICH, VILLAGE BORISOVKA, PODOLSK
Reliability As early as 6 months we have installed a cleaning system Wastewater Eurolos. Although the installation is not cheap, it absolutely suits us, because in the time ... IGOR, GARDEN COMPANY ROSS, APRELEVKA
EUROLOS, Solnechnogorsk, Golovkovo
Competent support I did not write reviews here, but now I am writing. After the installation was installed, the guys collected the tools and left. At first, there were some ... , VILLAGE DOMODEDOVO, MOSCOW REGION
Aleksino, Istra district A private house in Aleksino Review of the station Evrolos after long-term constant use. Vyacheslav 19 January 2016
VILLAGE OF THE SOKHOZ RAMENSKOE Positive experience This is not the first time that we have become clients of EuroLos, in particular, we have bought BIO and ECO installations and we want to express our gratitude to the company, since indeed, during the entire period of intensive operation, we did not have any problems. now all our friends and of course relatives understand from our experience that autonomous sewerage this is the best solution for a summer house or cottage. everything is very harmoniously neat and there are no unnecessary worries about the occurrence of an emergency. As for the work, those employees who worked with us proved to be very professional and neither I nor my wife had any complaints. Now we recommend this company to everyone and we are not afraid to bear responsibility for it. in general, thank you very much EUGENE 29 October 2015
VILLAGE ORLOVO Not worth saving WITH THANKS, VICTORIA 13 September 2015
VILLAGE BORISOVKA, PODOLSK Comfort for a country house Thank you for the installation, it so happened that we are contacting for the second time. I express my gratitude to your guys who assembled the installation for my house. Now my granddaughter says that it remains to put a pool in the yard, and she will not leave me. The installation works fine, the water runs out without problems, everything works, and I really can't get enough of it. Thanks to the girls - consultants, very smart and polite, great luck to them! (ugh, ugh). VIKENTY SERGEEVICH 13 September 2015
GARDEN PARTNERSHIP ROSS, APRELEVKA Reliability Already for 6 months we have installed the Eurolos wastewater treatment system. Although the installation is not cheap, it absolutely suits us, since during the time of use there were no reasons for complaints. Before Eurolos, we had an ordinary cesspool, and of course these are incomparable concepts. Firstly, before we constantly monitored the level, and periodically carried out cleaning, but now this is not necessary. It is really very comfortable and frees you from unnecessary problems. I highly recommend purchasing this rig, as this is not a case where it is worth saving. I think you understand. And I wish the EuroLos employees success in their work and also provide services only at a high professional level. IGOR 5 May 2015
Solnechnogorsk, Golovkovo Septic tank for a summer residence in Solnechnogorsk Video review of the installation of the Eurolos BIO 8 station at a dacha with seasonal accommodation. EUROLOS 9 March 2015
VILLAGE DOMODEDOVO, MOSCOW REGION Competent support I did not write reviews here, but now I am writing. After the installation was installed, the guys collected the tools and left. At first, some questions arose, I wanted to figure it out a little myself, so I was looking for answers on the net. I did not expect that by calling the company, I would receive a detailed answer. I mean, not trivial memorized phrases, but quite professional patronage, recommendations and personal observations were given. Everything is very human, but on a professional level, for which thanks to your team. IVAN AND FYODOR MIKHAILOVICH SAMOILOV 23 January 2015
Drip irrigation for your garden
Drip irrigation is the most efficient and economical way to water your garden, saving you time, money and water.
What is drip irrigation?
It is an efficient and economical irrigation method. This irrigation method gives more than 90% efficiency of the water used. Unlike sprinkler irrigation methods, which are only 65-75% efficient, drip irrigation reduces leakage and evaporation. Drip irrigation delivers water very slowly to the root of the plant, just where it is needed.
Drip irrigation is used in greenhouses, nurseries and agricultural firms. Be that as it may, ordinary home owners can take advantage of the use and benefits of drip irrigation... As a homeowner, you can use drip irrigation for your vegetable and year-round gardens, trees, flower beds, and flowers.
The benefits of drip irrigation
Tubes with a lot of droppers, called drip lines, are placed above the ground along the plant beds. Droppers slowly let water into the soil at the root zone. As the moisture level is kept at an optimal level, the plant's growth productivity and quality are improved. Plus, drip irrigation:
Prevents disease by minimizing water contact with plant leaves, stems and fruits.
Allows the beds between plants to be dry, improves access and reduces weed growth.
Saves time, money and water thanks to its highly efficient system.
Reduces labor costs.
Increases efficiency even on uneven surfaces.
Reduces water leakage and fertilization below the root zone.
Drip irrigation system assembly and components.
The main components of a drip system are a faucet or automatic controller, filter, main line, auxiliary lines, connectors and fittings, drip lines and plugs.
The main line is connected to a water source - to an external tap - and then, through an auxiliary line, to drip lines. Basically, construction lines are used if you have many watering zones. The total length of the main line and auxiliary lines should be no more than 120m.
The tap regulates the water supply to the system and can be controlled either manually or automatically (if an electrical controller is connected). A pressure regulator is required if the pressure can exceed 2 bar.
Filters prevent droppers from clogging up with substances undissolved in water during a long time of use. It is best if the filter has a filter mesh of at least 120 MESH or higher. Adapters and filters are used to connect drip lines to the remainder of the system. This is important as it is the correct size to prevent leakage when pressurized water supply.
Drip lines and drippers
The drip line is a polyethylene tube with built-in drippers that should be located near the plants. Drip lines and droppers come in different types and diameters depending on your needs. The length of each drip line 16 mm / 33 cm / 2.1 l / h should not exceed 50 m from the point where the water enters the tube so that the emission uniformity is 95%. You will need to reinforce the line to prevent it from moving.
Typical mistakes
The following points are provided to introduce you to some typical mistakes that are encountered in the design and installation of a drip irrigation system.
Too long drip line or too many drips:
The Tandem drip line contains drippers that are pre-installed at the factory every 33 cm and each dripper consumes 2.1 l / h (at 1 bar pressure)
The maximum recommended length is about 50 meters on a flat surface in order to have an equal flow with 95% uniformity or a maximum of 80 meters for 90% flow uniformity, which already means that an emission difference of up to 15% is possible between the first and last dropper in the line ... Since the Tandem drip line has 4 outlets in each drip chamber, this contributes to better flow and better stability against clogging.
Filtration:
Use the correct filters for your system. Choose the right filter element for your water quality and drip type. We recommend a filter with a mesh of at least 120 MESH. Never use the system without filters.
Incorrect pressure:
In order for the drip system to function properly, it must be supplied with the correct pressure. (BAR or ATM are the same) If you try to put too many IVs into the line, the pressure will drop below the minimum operating minimum and your system will not work. If you are using the wrong pressure regulator or not using one at all, your system will be too pressurized and will not work properly. The table below shows the different flows with different pressures and relative diagrams.
... Incorrect zoning:
"Zoning" is a grouping of a large drip line in common "zones". Usually zones are grouped by plant type. The trees are separated from the flower beds. Plants that are resistant to dry climates are separated from moisture-loving ones, etc. if you have different types soils, you can also separate them into separate zones. The main thing that you should remember is the ability to water each plant according to its needs when the system is on? If you place a large tree on the same line as a small flower bed, one of them will be either too dry or too wet.
... The drip irrigation system can be connected via an automatic regulator.
Since a small amount of water is delivered slowly, drip irrigation is designed to function throughout the day, excluding rainy days. The question of how long to use drip irrigation depends on how much water your plants require per day and how much the drip outlets have. Water is served once or twice a day. Best time for watering - early in the morning, because at this time the level of evaporation is lowest.
... Water Demand: You should know the water demand according to the evapotranspiration factor (Evaporation rate in the area you are in and plant transpiration). If, say, the total evaporation is 5 mm per day in the hottest month, we calculate this data according to the size of the zone we wish to water, i.e. 100m2: 100m2x 0.005m = 0.5m3 per day is the water demand every day. This is an accurate calculation of the amount of water you need to apply each day through the drip system. You can water every two days, doubling the amount of irrigation water, or even every 3 days, tripling the amount of water. You also need to adjust the system in months that are not so hot.
The usual way to do this is through trial and error. Adjust system usage times and daily schedule for the entire season. The main thing is the need to observe the plants and pay attention to their needs. You need to do more than just install the drip system and go into the house. You should check your system periodically to make sure it works fine.
Beginning of work
If this is your first time installing a drip system, we recommend trying one of the kits. Each kit contains everything you need to install a working drip irrigation system. All parts can be purchased separately to be added to the system later.
The components of the drip irrigation system are the following: controller, valves, filters (pressure regulator if pressure exceeds 2 bar), drip fittings, drip line (micro pipes) (drippers) and scissors and tweezers type tools.
... The Greentimer is a battery powered controller: it has an all-in-one design that can be hung directly on a bell or other water source. This type of controller is ideal for small systems in one irrigation zone.
... The ideal working pressure for your irrigation system is 1 bar for drippers or 1.2 bar at the starting point of the water supply (If your pressure is more than 2 bar, use a pressure regulator to reduce the high pressure).
... If you leave polyethylene pipe 16 mm in the sun, it will be easier for you to work with.
... If you have a problem trying to insert the ½ ”prongs into a 16mm pipe, then placing the pipe in warm water will make the process easier. You can also heat the tube ends using a hair dryer.
The diagram below gives a visual representation of how to assemble each type of system:
... A drip irrigation system using a bell and battery powered controller (timer), filter, 16 mm polyethylene pipe, 16 mm drip line with droppers inserted every 33 cm, produces a flow of 2.1 liters per hour at a pressure of 1 bar. 
Note: When connecting your components, be sure to use the correct thread and apply some insulation to it to avoid water leakage.
Wrap insulating tape around the threaded connection of the Greentimer controller
Screw the insulating foil around the filter thread
Connect the coupling
Screw the insulating tape around the threaded connection of the inlet nipple
Insert the connector into the 16mm pipe, fix the connector
Unscrew the 16mm tube and cut when it reaches ground level
Connect the elbow to the other end of the 16mm tubing and then to the drip line
Connect the Tandem drip line to the knee. Install a Tandem drip line along the line of your plants
Use a T-joint to follow the contour of your plants
Close the end of the drip line by bending the tubing and installing the double clamp
Planning your system
Start by making a sketch of the area you want to water. Make sure to include locations for trees, bushes, vegetables, and natural shelter. Prepare a list of your plants by category, i.e. natural shelters, bushes and trees. Based on plant size, category and density, you can determine the required flow rate for the droppers. Show on paper the location of the site's water resources, obstructing walls, and paved areas. This will require measuring the area you want to water.
Planning for future use
In any project you create, leave room for future expansion. As plants mature, they may require more water. Watering times can be extended to meet this need, but in general, more drip lines need to be added to ensure growing plants. In addition, new plants can be added to the landscape, so leave room in the overall project with a 20-30% increase in available water capacity.
Setting up your system
Installing a drip irrigation system is a fairly simple process. Start by comparing your plan to the actual landscape and make any necessary adjustments to your plan to reflect the actual conditions at the site. Begin installation and assembly at the water source. If the drip system is serving more than one zone, then by adding valves to each drip tube you achieve control of each zone. If you choose to automate your system, your controller should be the first component in your build.
Installation of drip lines
Install drip lines using fittings as needed. Don't lay the lines too tightly; leave room for expansion and contraction due to changing weather conditions. Make it possible for larger plants to receive more water by adding more drippers (more drip line meters). You can draw a line around the tree to ensure large quantity droppers.
The first start of the system
Before turning on the system for the first time, leave all ends of the drip lines open, turn on the water supply and allow it to flow freely for a few minutes. This will flush out any dirt that may be inside the line. Close the ends of the drip line using plugs. Make sure the drippers are working properly and there is no water leakage at the connection points.
Service
... Inspect the droppers to make sure they are not clogged.
... Filters should be rinsed and cleaned at least once a month, depending on the quality of the water. By checking the filters one week after installation, you will get an idea of how often to schedule filter cleaning.
... It is also necessary to periodically flush the line tubes; again, water quality will be the deciding factor in determining the frequency of flushing.
... During cold weather, we recommend draining the water from the plastic tubes or rolling them up and putting them in storage.
... During cold weather, we recommend removing the battery-powered controller and, having completed a complete disassembly of the equipment (filters, valves), put them in storage indoors.
... Once a year, remove plugs or open hose ends to flush the line.
... As the plants grow, you may need to add, change, or remove drip lines.
To better manage your irrigation process, you should know:
Determination of soil type
When water is slowly applied to the root zone at one point, it is subject to gravity (downward movement) and capillary action (outward movement), creating a characteristic of wetted soil type and irrigation rate. To determine what type of soil you have in your area, take a handful of dry soil, squeeze lightly and release. Sandy (rough) soil will crumble and fall apart. Loam (medium density) will stick together but can be easily broken. The clay is compressed without breaking.
Each soil type will require a separate layout. On sandy soil, water tends to seep down, so we recommend using closely spaced or large volume droppers. In loam, the water will move slowly and spread evenly, so you can use fewer drippers with more distance between them.
Tandem Drip Line with outlets on both sides of the drip chamber provide faster flow and better distribution of irrigation water.
The relationship between soil and water
Capillary moisture is water held in pores by the surface tension that exists between the water and soil particles. Capillary moisture is the primary force that distributes water horizontally and is the primary source of water for the plant.
Gravity water is free water in the soil that flows downward under the influence of gravity. After the soil is saturated with water, gravity water seeps down, leaving the soil at the field capacity
EXAMPLE OF GOOD IRRIGATION UNIFORM
WASTE WATER
Field moisture capacity is a method of measuring the volume of water retained in the soil despite the action of gravity. If the soil is saturated with rain or watering and then dries freely within 24 hours, the soil is usually at the field water capacity.
For most plants, soil moisture content at the field moisture capacity is the ideal moisture level for vegetative growth as there is a good balance between soil moisture saturation and weathering. The soil will lose a small amount of water after it dries out to field capacity if there are no plants on it. Plants will remove water through transpiration and reduce moisture in the soil. On hot days, plants can use water faster than the soil can supply the roots, or faster than the roots can supply the rest of the plants, and the plant will wither. Usually, with sufficient moisture in the soil (which you can maintain with your irrigation system), the plant will recover overnight.
The point of persistent wilting is the moisture content in the soil at which the plant wilts and remains wilted.
Calculation of the total volume of consumption
To determine the total flow rate in the area of the drip system, simply add the total number of drippers and their flow rate.
Example: You have designed a system using a 50 meter Tandem drip line, with drippers every 33 cm and a flow rate of 2.1 liters per piece (on each dripper). 50 m divided by 0.33 m = 152 droppers multiplied by 318 liters per hour.
When in doubt about the capacity of your water source, measure how long it takes to fill a bucket of known volume. For example, it takes 20 seconds to fill a 5 liter bucket, then the maximum water flow per hour is 5 liters multiplied by 3 = 15 liters per minute x 60 minutes = 900 liters of water per hour. If the system requires more water, split the system by adding another valve. The maximum recommended flow rate for a 16 mm drip line is 800-900 liters.
SteleCables
Engineer
Irritec S.p.A
Electronic water timer D-2
Setting the current time and date
1. Press the button TIME
2.Use the arrows to set the hour (0-23 hours)
3. Press the button SET
4.Use the arrows to set the minutes (0-59 minutes)
5. Press the button SET to store the minutes
6.Use the arrows to set the day of the week (Su-Sunday, Mo-Monday, Tu-Tuesday, We-Wednesday, Th-Thursday, Fr-Friday, Sa-Saturday)
7. Press the button SET to store the day of the week.
This completes the setting of the current time and day of the week.
Forced on / off the water supply
1. Press the button ON
2.Use the arrows to set the hour at which you want to turn on the water supply (0-9 hours)
3. Press the button SET to store the hours.
4.Use the arrows to set the minutes for which you want to turn on the water supply (1-59 minutes)
5. Press the button SET to store the minutes.
The timer will turn on the water supply for the time specified by you.
To turn off the water supply, simply press the button OFF
Setting water supply on / off programs
1. Press the button PROG
2.Use the arrows to select the program number (1-16 programs)
3. Press the button SET to save changes
4.Use the arrows to set the hour when the timer should start (0-23 hours)
5. Press the button SET to save changes
6.Use the arrows to set the minutes when the timer should start (0-59 minutes).
7. Press the button SET to save changes
8.Use the arrows to set the duration (in hours) for which the timer should turn on (0-9 hours)
9. Press the button SET to save changes
10.Use the arrows to set the duration (in minutes) for which the timer should turn on (1-59 minutes)
11. Press the button SET to save changes
12. Use the arrows to select the days on which to automatically start watering.
"2nd" - every other day
"3rd" - in 2 days
or on a specific day of the week.
The "*" mark is not used in this timer model.
13. By pressing the button SET, You can select the days on which to start watering.
14. Press the clock button to end programming.
View installed programs
1. Press the button PROG
2.Use the arrows to scroll through the program data (1-16 programs)
3. Press the clock button to end viewing.
Below is an instruction for the previous model 8-program timers.
You have purchased a quality electronic water timer that uses an efficient solenoid valve to open / close the water supply valve. Please read this instruction manual carefully to familiarize yourself with the peculiarities of the timer operation and programming. Check that the program (s) is (are) running when you use the timer for the first time. The timer is intended for use by adults who have read this instruction manual.
Usage.
This water timer is designed for outdoor use (gardens, summer cottages, vegetable gardens, fields) and provides control over the water supply. The use of the water timer for industrial purposes or in conjunction with chemicals, flammable or explosive substances is prohibited.
Technical data.
Supply voltage: 3V (2 AAA batteries 1.5V)
Battery Life: 3-6 months
Time error: less than 0.25 sec / day
Working temperature: from + 5 ° C to + 60 ° C
Allowable water pressure: 0.5 - 8 bar
Keypad lock: prevents accidental program changes.
Principle of operation.
The electronic water timer will ensure the scheduled watering of your garden and plants fully automatically according to the program you set. You can program a timer to water your garden early in the morning or late at night when the water evaporates the least. The timer will ensure watering of plants even when you are on vacation or away. The device provides two ways to control irrigation:
1. Manual: Press the Man / Auto button to switch the valve to:
On - Off - Auto
2. Automatic: it is possible to program timed watering up to 8 times a day. You can also choose from 15 different combinations of days of the week on which days the timer will water.
PREPARATION FOR WORK.
1. Unscrew the protective cover. Gently pull out the battery compartment on the front of the timer. Insert two new 1.5V batteries (size AAA). Reinsert the battery compartment.
2. Fasten the water timer securely. The water timer must be in the closed position (OFF). Loosen the large outer ring located at the top of the timer until the threaded inner ring rotates freely. Twist the ring with threaded connection on the pipe. Screw only with your hands (!), Then tighten the outer ring of the timer tightly. Open the tap to check the connection for leaks. (DO NOT USE PLIERS OR PLIERS TO TIGHTEN the timer rings.)
Programming a water timer for irrigation.
| 1. Press the "Program" key. Program 1 ON appears on the screen. |  |
| 2. Press "hour" and "minute" to set the start time for program 1. |  |
| 3. Press "day" to set the day (s) of the week for which program 1 will start watering. (The default is mon-sun, i.e. every day). | |
| 4. Click "Program" again. Program 1 OFF appears on the screen. |  |
| 5. Press "hour" and "minute" to set the time to stop watering for program 1. |  |
If you want to turn on your water timer only once a day for the days indicated in point 3 above, the timer programming is now complete. 6. Click "Program" again. Program 2 ON appears on the screen. |
|
It is possible to install up to 8 programs per day;
- A total of 15 different day-per-week configurations;
- Make sure that the days for the timer to be turned off (OFF) must be the same as for the timer to be turned on (ON);
- MAKE SURE that an OFF time is set for each ON time !!;
- Press "time" to exit programming mode.
If after pressing "Program" you press "day" repeatedly, you will be able to select the following combinations of the days of the timer activation (see paragraph 3 above)
| 1 | MO | 4 | TH | 7 | SU | 10 | SA SU | 13 | MO TU WE TH FR |
| 2 | TU | 5 | FR | 8 | MO WE FR | 11 | MO TU WE | 14 | MO TU WE TH FR SA |
| 3 | WE | 6 | SA | 9 | TU TH SA | 12 | TH FR SA | 15 | MO TU WE TH FR SA SU |
Water timer control keys and display.
Key lock: Press and hold Esc for more than 3 seconds. Press and hold for more than 3 seconds again to unlock.
Time setting: Make sure the keyboard is unlocked. Hold down the "time" key, press "min" to set the minutes, "hour" to set the hours, "day" to set the day of the week.
Esc key: Reset the time of the displayed program.
Greetings to Muskovo citizens!
Finally, a new smartphone came to me, which has there is camera, and I can do any reviews. Go! Today, for my colleague, a timer bought for Ali was received to automate irrigation in the country / garden. All the same, the century is 21 technologies, and there is no time (and who has the desire) to visit the dacha for watering. We do not touch on the part of water delivery to “consumers”, this is another topic, here we will talk about a timer that will open water and let it go to consumers. Go! Review supplemented! Please, under the cut!
I don't like a bunch of photos about tracks, packaging and so on. Everything arrived, and the whole, this is the main thing. So let's start with what arrived: 
The product was purchased in another store, the link is lost. According to the link in the review, there is also an adapter for quick connection, but I either did not have it in the description, or the seller forgot to put it, it's not scary. So, what is available: the timer itself, the instruction, a pair of threaded connectors for connecting to the water supply.
What the timer can do (the most important and interesting):
16 programmable programs
Water pressure: max. 6 bar / 150 PSI
Water temperature: max. 40 degrees
Batteries: 2x1.5V AAA
The most important thing is that it holds some kind of pressure. The device will be operated connected to a container with water, water will flow by gravity through a drip system to consumers. I think it is possible to use it on the water supply, but it may be necessary to install a reducer so that the device does not break. 
When assembled, the device looks like this. Definitely missing an adapter quick release hose. On the other hand, it will always be connected. Why take it off? 
Everything inside is plastic, but the plastic is quite pleasant to the touch, thick and durable. Exactly what is used in garden supplies. 
The lid is transparent. It is screwed onto the timer through a silicone O-ring, very tight, with a squeak. Creates an impression of reliability. 
Everything is powered by two AA batteries. The opening hours are not yet clear, tk. the device was not in operational use. A bug was immediately identified, while I was twisting and photographing, the contact disappeared. Therefore, when installing in combat mode, it is better to additionally fix the batteries in the compartment.
Let's move on to the most interesting, setting. At first glance, everything is very complicated, there are many buttons, it is not clear what to do. We gradually read the instructions and try. Everything becomes extremely clear and into place. 
How and what is set up?
The first thing we do is hit the Time button. Use the arrows ˄ and ˅ to set current time, confirmation of each value with the Set button, we also select the day of the week.Unfortunately, I deleted this photo, so I already have the next photo where you can turn the timer on and off with your hands, bypassing the programs.
Press the On button, use the arrows to set the operating time, press the Set button. The timer opened, the water ran. In the current photo, the time is 14:53, the timer has opened the "latch" for 15 minutes.
Let's move on to the most delicious program. We press the Prog button, we get to the menu for setting the irrigation programs, there are 16 of them, as stated with us.
What can be customized. Program number, start time of watering, operating time, number of operations, or every 2 days (as I understand it, from the day the program was created), every 3 days, or according to the schedule. Use the arrows to select the day, use the Set button to mark.
At first, while dealing with this contraption, I thought that I had not bought what I needed. how to water several times a day? Everything turned out to be simpler than simple. For example, a person wants to water 3 times a day, but a one-time switch-on is configured in the program?
Therefore, we need 3 programs out of 16.
1.7.00 for 30 minutes on Mon, Wed, Fri, Sun
2. 15.00 for 30 minutes on Mon, Wed, Fri, Sun.
3..21.00 for 30 minutes on Mon, Wed, Fri, Sun
That's it, the setup is complete, we lubricate the O-ring, screw on the lid and put the timer in its rightful place.
Measurements and device:
In the "idle" mode, the device consumes 1.1-1.2 mA.
When the valve is triggered, the current rises to 350 mA (0.35 A), and then drops again to 1.2 mA, while the valve remains open. Also, in the event of a power failure, the valve remains open.
Now let's move on to the very important point - internal organization... Comrade Muskovo explained:
<...>If not inside ball valve, and the diaphragm is due to the pressure from the barrel, alas, this timer will not work, which has already been written many times on specialized forums. It is these green timers that come with both ball and diaphragm<...>
My situation is as follows: in appearance, there is still a diaphragm inside, tk. the crane mechanism in the end is definitely not visible. At the same time, after opening, the air is blown out without much effort.
All these prairies are associated with the ability of this device to work with containers by gravity, according to some information, devices with a diaphragm will not open at low pressure. I invite you to delve into the topic in more detail in the comments.
Summary:
For those who missed, I repeat, the timer was just purchased, it did not work in combat conditions, but when checked, everything buzzes, closes, and does not let air through. Bought on Ali in another store, link in the review for an example! In the hands creates the impression of a reliable and quality product... Overview not paid for and goods not provided free of charge. I just decided to share with everyone, in my opinion, a good thing for automating routine processes before the coming irrigation season.Thank you all for your attention! I plan to buy +191 Add to favourites I liked the review +68 +154
Many owners spend a huge amount of time watering, while using more water than the plants need. It is especially problematic to irrigate regularly far from home and fields.
It was for such purposes that a special timer watering, which we will talk about in this article. Let's figure out how the device works, what it is used for, whether the price really matches the benefit.
What is it and how does it work?
Let's start with what the automatic watering timer is.
The design can be different forms, however, most often it resembles a water meter that everyone has in a private house or apartment. The device is intended both for supplying water for irrigation for a certain time, which is set by a timer, and for programming irrigation for each day of the week.
At the same time, the program is not limited by anything, and if you understand the system of action, then you can program a separate watering option for each day, while setting different time and duration. 
That is, before us is an apparatus that allows remote irrigation according to the program you have set. The device works on batteries, which are protected from moisture. Thus, the timer does not depend on the presence of the mains supply, therefore it can be used even in an open field.
Important!The set programs are retained when the batteries are changed.
The timer works as a shut-off valve, which is connected on one side to the pipe to which water is supplied, and on the other side a regular irrigation hose is attached. The design provides for the presence of a nozzle for watering hose, so you don't need to buy anything extra. At the moment when it is necessary to produce, the device opens the valve, according to the type ball valve, and water is being supplied to irrigate the site.
It is worth noting that not all watering timers have software that will allow you to program actions, so be sure to check the capabilities of the device when purchasing. Also note that the watering timer, although it has a similar shape, does not function as a water meter. 
Types of devices
Mechanical
A mechanical timer has a clock device that was used in the first microwave ovens or mechanical watches. The watch device works on a spring and can provide continuous watering for up to one day. In this case, any adjustments are made manually. Such devices lack a dial or screen, as well as the ability to program actions. 
A mechanical timer is great for backyards where irrigation is constantly monitored by the owner. In this case, the unit allows water to be supplied for a fixed amount of time, after which the mechanism is triggered and the tap shuts off the water supply.
Did you know? The first prototype of the timer and stopwatch was invented back in 1720. The device could record time intervals with an accuracy of 1/16 of a second.
Electronic
The electronic version, as you might have guessed, has an additional programming function that allows you to spend more time doing other things than watering the vegetation. These options are best suited for areas remote from the house. Since some crops require daily watering, the purchase of such a timer will pay off almost instantly, taking into account the cost of gasoline and the time required. 
The electronic version has two varieties, which we will characterize further.
The electronic watering timer allows you to set actions for one week, while the maximum watering duration is 2 hours. All tasks are set in advance by a person, after which the system works according to a given scenario.
Such devices have an average price and fairly good functionality that allows remote irrigation. 
The most advanced version, which has up to 16 programs. Any watering action is set. You can also irrigate from one timer various plants while setting a specific watering time for each.
To make it easier to understand what the difference is, let's compare the cheapest microwave and microwave oven with all the possible "bells and whistles." Yes, each of them can heat or cook food, but the more expensive option gives you more choice, which allows you to cook absolutely any dish using only a microwave oven, which will replace the oven, grill, gas oven and even.
So it is with electronic timers with software control. They allow you to irrigate all crops at once, using at the same time for each of them its own time and its own volume of water. Such a system works without any human intervention. 
Did you know? The first electronic watch appeared in 1971. They were equipped with digital LED indication.
Selection rules
To begin with, you should decide what exactly you need, since this will affect the functionality of the device and, of course, its price.
If you are reading this article, it means that you are interested in this device, or there is a need for such a sensor. Therefore, it is worth considering all the options, as well as explaining their usefulness in one case or another.
- Mechanical option. If you do not want to stand for a "full hour" with a hose in your hands on personal plot, as well as remember the exact watering time, then it is enough to purchase the simplest version that works on a spring. You will receive a device that does not require electricity, does not deteriorate from moisture or the sun, and is also low cost.
- Electronic version with mechanical control. Such a device is installed at a site remote from home and is designed to irrigate one crop, since you can programmatically set any time for any day of the week. Of course, such a device is more expensive, but it suits perfectly for irrigating large fields, since its functionality is quite enough. It makes no sense to install such a device on a personal plot, because the main advantage of the device is remote work, which saves you time.
- Electronic version with software control. Such a device is usually placed in greenhouses, where not only the irrigation schedule is important, but also the air humidity. The presence of sensors allows you to control the humidity of the air, as well as set the ideal program for each crop.
Important! If the device runs on batteries, then, on average, there will be enough for 1500 on / off switching.
It makes no sense to use the most advanced option in open fields, since the entire functionality of the device will not be revealed. And given the cost of the device, its loss or breakdown can hit your pocket hard. After all, it should be understood that the more electronic filling in a device, the more vulnerable it is to external factors.
Now it's worth talking about which device to take for plumbing system, and which timer for irrigation to choose for gravity systems.
To begin with, these timers differ in the mechanism for opening and closing the water supply. In one case a solenoid valve is used and in the other a ball valve is used. The solenoid valve opens only at a pressure of at least 0.2 atmospheres. It is used for centralized water supply, as it can withstand high pressure. Also, a similar valve protects against air supply during the time when the water is turned off.
It is used for gravity systems, that is, for irrigation from any container (barrel). This option is better suited for watering greenhouses and greenhouses, since a fixed amount of water is used. Ideal for drip irrigation systems. Works at pressures from 0 to 6 atmospheres. 
Number of valves. Above we wrote that advanced timers allow you to set the irrigation scenario for different crops. In order to do this, you need to purchase a device with multiple valves. At the same time, a separate time and duration of watering for each plant is programmatically set. It is useful to use multiple valves in the greenhouse, as it is important to maintain a constant microclimate in order to get a good harvest. 
It is worth noting that several valves can be installed on the simplest mechanisms, however, due to this, their functionality does not increase. You simply cannot do so that, for example, mechanical timer I watered one crop first, and then another, since all actions are set manually.
Additional features. The electronic versions can be connected to a rain sensor, an additional filter, as well as a mini pump.
The rain sensor, as you already understood, is used to prevent our timer from flooding the area at the moment when it's raining... An additional filter is used only for drip irrigation to avoid blockages in the system. A mini-pump is needed when water is supplied from a tank, and the pressure is 0 atmospheres.
How to connect and use the device
After connecting, we begin to understand the principle of operation. The simplest timers are enough to "wind" like a clock, after which the water supply will begin. Complex options have multitasking, which is why they require a complete study of the instructions.
Assembling the device
After unpacking the original packaging, read the instructions carefully. Also pay attention to which way the water supply arrows point. If you ignore this aspect, then you will mount the device in reverse. 
After reading the instructions, which describe in detail the installation principle, we proceed to connecting to the system. Start by comparing the inlet pipe diameter. Most likely, you will need to separately purchase an adapter that will allow you to connect a hose of any diameter to the device.
After you have picked up everything you need, you need to connect the pipe to the inlet. To do this, remove the protective ring, put the pipe on the "nose" and twist the ring that should fix it. Next, we look at the diameter of the outlet. Most often, there is a special nozzle on the timers, which is used to connect the watering hoses. If the diameter fits, then we just put the hose on, if not, we buy the nozzle of the required diameter. After connecting the hose to the outlet, the installation of the simple timer is complete. To mount advanced drip irrigation devices, additional steps are required, which can also be described in the instructions. Additional adapters, sleeves or tees may be required depending on the irrigation system you are using.
Timer setting
After connecting the device to the system, you need to insert the batteries or connect to the mains (some timers only support connecting to the mains). Next, the dial will light up, under which the buttons are located. Most devices have two buttons that allow you to zoom in or out numerical value, a button that sets the day or month, as well as the on / off buttons of the device. There is a "Start" button that launches an algorithm of actions.
Depending on the configuration and manufacturer, the number of buttons and the actions for which they are responsible may differ, so we have provided general data.
To set the timer, you need to turn it on. Next, set the current right time, by which the device will navigate. Next, you need to create a script for each day. To do this, select the day, after which we set the watering time first, and then its duration. After that, we switch to other days. If you have an advanced version, then it gives you the opportunity to create a script for a whole year. This opportunity is perfect for.
After complete configuration, you need to press the "Enable" or "Start" button, and the unit will start sequentially executing the script.
Important! Electronic timers do not have an initial setting, so everything is manually programmed for personal needs.
Features of operation
Now let's talk about how to properly operate the device so that it lasts longer.
To begin with, you should only use high quality batteries if you have electronic device... In this case, the batteries must be 1.5 v, or a different voltage, if described in the instructions. 
As for the water supplied to the device, it must be clean and fresh. Any heavy particles will clog the filter and require frequent cleaning. At the same time, the quality and power of water supply will be reduced significantly. Also remember that the temperature of the water that passes through the device should not be higher than +40 ° C.