Need Long Interval Timer

wow, I vote you for your passionate ,acquisitive material supply. its very detail, to be true, I cant search that. really goood. especially amusing pics.

another side, I think its not a difficult job to make such ling time timer with a chip like 2051 etc. diy.

just several wires connect and easy programming. add a relay can control any things as long as you hope.

even an electrician can make it. I think.

Well Mr. Guru,

I want you too know that "even an electrician can make it. I think" I very insulting in the rest of the world.

In addition you missed the entire point. The need here is for a "remote and durable" timer not a chip that will require programing.

I am sorry if these words are to strong for you but show some humility and respect.

No,no, you can speak any word to my thread. if you would like to discuss how to make a timer.

remote, you want? just entend the wire as long as you want. becaue the relay conrolled signal is DC.

if you hope wireless, its another thiings. you have to add a transmitter and recieeer,

can you explain me detail, what is it? I cnnt understand

I want you too know that "even an electrician can make it. I think" I very insulting in the rest of the world.

?

Cultural difference here. You made as simple logic statement. But in our language to use the word "even" to refer to ability is same as saying "Even (a stupid) person can do it." We have a commercial here for on line car insurance "So easy, even a cave man can do it." Next time leave out the word "even". But someone may be offended anyway. Better not even to make comparison just say "It is easy to do." or "Anyone can do it."

Hi,rcapper,

Thank you very much for your mention. I dont know Even followed such meaning.

haha, sorry to that visitor.

the elementary electrican cannt do the job. only skilled can do.

ok ok, not anyone can do it.

btw, Your Shaolin gongfu is wonderful.

She she, wo de pung yo. (pardon poor spelling!)

I have used an Omron timer on one truck for 6 years. It has a selectable 1 through 999 number set, plus another set that allows :seconds, minuets, hours, or days. It might go to weeks or months, I don't remember. Mine is 12 volt powered. This should do what you need.

Bob c do you happen to have that Omron part number available? All the long time duration times I found so far need AC power and a foot note says not to power them from an inverter. The only DC powered timer relayI have found so far is good for only a few hours. I'm still looking for a direct email address to send a query to OMRON. All the Tech Support leads to FAQ - none of which address my particular needs.

and the search continues ... .. . .. . ... ....

As luck would have it I purchased a spare when I bought the first one. The box reads :

type H3CA-A

timer

time 99.9s to 9990h--------------( that is almost 2 months)

volts 24 to 240vac 12 to 240 vdc

lot no. 2070

I purchased mine from grainger. It has a grainger part # of 1A983. You will need an eleven pin socket to plug it into. The current catalog lists three sockets on page 312 and the relay on page 317. If I can help in any way please let me know. Good luck.

Hurray!! Grainger has a local retail outlet in the next town. I'll check it out next trip into town at end of month.

I find I get great use out of my Grainger book. Like a kid in a candy store.

The sprinkler system timers depend on a pressurized system to let water pass. I did not see any with external contacts to apply power to start the water pump. Did I miss something? And most of them have a battery or draw power from an AC source to operate the motor controlled valves.

Hello elnav,

try these sites.............

http://www.surpriseaz.com/DocumentView.asp?DID=2705

http://www.techwebasto.com/heater_main/907512.pdf Go down to mark 2.3. This gives info' on the timer.

stay safe

babybear

Methinks the internet is getting too sophisticated. The first link showed an Irritrol product and when I went to their website to get contact information it asked me for my postal code. Entering my postal code produced a message saying no dealers in my vicinity and to enter another postal code and try again. I tried every possible postal code I knew of for a hundred miles around. There are only four for that whole area. Still nothing. So how do you contact them? They do not make provision for querying by state or province.

I haven't had much luck with Omron gear, but it could be dumped or black market.

Finder relays are very robust:http://www.findernet.com/en/products/profiles.php?serie=12

More and more curious! Mark; I did a copy and paste of the URL and was told Google did not find anything to match. It asked me if I wanted http://foundrynet.com

Then I started deleting extras from the end. Still no results, even when only www.findernet.com remained. Typing it in yielded a no access allowed message.

In other words the internet apparently does not allow me to access it while you can from another continent. Hmmmm? Curious!

All good advice, however no mention of accuracy, RTC? does it need to be calibrated on a regular basis? Temperature drift? or is it a don't care situation? Just some thoughts.

Hello madness

The Omron Equipment I mentioned earlier (And similar Equipment) is quite accurate, normally within ±20 seconds per year.

Quartz crystal frequency standard operates count-down divide-by circuitry, to give high accuracy, while being reasonably temperature stable.

I'm sure the cattle would not mind waiting a few seconds.

Kind Regards....

Very nice equipment with thoes spec's!! Will look into it, hope i don't stumble onto the cattle adapted hoof watch

Hello elnav and other readers frustrated by Google's efficient auto-transfer system.

There is a way to evade the Google System, and Google Search in the Country/Language of your choice.

Please read my Topic here: http://cr4.globalspec.com/thread/25677/Google-Search-Engine-by-Country-and-Language-The-Easy-Way

This has been especially written for you all.

Trust you now feel assisted.

Kind Regards....

Thanks Sparkstation! I was beginning to think I was doing something really dumb or that (heaven forbid) there was a conspiracy. <VBG> I suspected there was a some kind of filtering based on country of origin, I just didn't know how it worked.

This should make my life easier since I am frequently looking for overseas stuff on behalf of other people.

Its a don't care situation. To clarify for those who asked. Its not a cattle watering timer. But the location is similar. A half mile long syphon pipe is used to supply a reservoir over a ridge. Not much elevation just enough that gravity flow is not going to work. About once a month the syphon develops an air leak? or similar. The water flow stops. Now someone has to ride up to the water source and use a gasoline pump to prime the syphon pipe again. Invariably the failure is noticed in the evening and often on a Sunday. Its a real PITA to find a ranch hand at that time to do the chore of priming the line. One solution would appear to be having a solar panel pump same as is used for the cattle watering stations turn on once per week and pump up the syphon pipe. the rest of the time it should be fine. Running th epump constantly is not a good idea since that would flood out the reservoir. the syphon works just fine for delivery ( except when it looses its prime)

I'm expecting the solar panel to provide 12V or 24V power to a timer relay. It needs to be a well sealed relay since it will be left outdoors year round in all kinds of weather. We really don't want a battery out there. That would require more frequent periodic maintenance and inspection. Omron or Finders look like the best bet. Now to see if the local stores 50 miles away carry those brands. I know they don't carry such things at the Co-Op feed store.

But I really can't see tinkering around for a day or so to package a chip, not to mention making a circuit board, and testing this thing. I only need one. Not likely to need two. However, thanks for the suggestion CN.

Why not use a normal 7 day timer whcih you can get in most supermarkets

Becuz they run on AC and is not happy with MSW inverter power.

Plus having an inverter in the mix is just one more layer of complication. Remember the original criteria was for an unattended piece of gear well beyond the back forty. The whole purpose was to avoid having to send a range hand back there with a 4 wheel drive and a gasoline powered booster pump every few weeks. We have already tried to figure out where along the half mile of buried pipe the syphon looses it prime due to a tiny vacuum leak. A solar powered pump like we use for catle watering is pretty foolproof. Just need to add a once per week timer.

Try a Cam Timer.

They have mini-motors driven by AC or DC of various voltages, or by air.

The timing is by a suitable motor speed and gear-box, and the output is via mini-electrical or pneumatic switches operated by cams on the shaft connected to the gear-box.

We use Rotolink - look them up.