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Re: Ntrogen Regulator
To: CRTech <crtech@crtech.org>
Subject: Re: Ntrogen Regulator
From: Tom Van Gorkom <tomvangorkom@gmail.com>
Date: Thu, 18 May 2017 15:21:14 -0500
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=UvSRBk4NkG4MfOdJCzkUlJDSpTIlF5tOwll+EoU9g0A=; b=EYEbAMdy+CKV35o14Hwih5EVHDjREMdQlizn+Tsc5yDC34FNAgkd6Xq1HHyqpKoNsT YdAp1A6ddyqQjy4v9G1uT5ROTKf+89fCF5qdp1Kr0sb10VxQhdPOmXuk2ljfVmJ6opDM x0eguUJxkD9KPfq5ypvdAwRxSQdsJs/XANxNsQCdhbRJjRI2Z83AvsMKc9kRwErTBQLu GWMYD+5vYYewyESIkYArEpicgKjWW5FpQIl+XXEUVCcHNE+DQFxFubWWxhX2YumTDFeD YXSZgNrWCQeb1XN2W0ADENObvf/vGNSiV6BlMoReNZuD9mtlzDXF0HMQ8x1Lx+e/dzpL ikQA==
In-reply-to: <CAP8KTHaT9DFp96SmTyQhuqbbskXrRJ4MbdgWvHM_Vjo_fRQzzw@mail.gmail.com>
References: <002c01d2d00e$6904af80$3b0e0e80$@pilgrimradio.com> <CAA8ua=y=_J_PvUZzkgO+LLWFhwrDrYZTaT_zCQhktsB2VTRkqw@mail.gmail.com> <003b01d2d010$fb5dac40$f21904c0$@pilgrimradio.com> <CAP8KTHaT9DFp96SmTyQhuqbbskXrRJ4MbdgWvHM_Vjo_fRQzzw@mail.gmail.com>
On one FM we have a nitrogen bottle with the standard regulator set for about 25# +/- that goes into a small regulator with a Phartronics pressure monitor and it keeps 3.5# +/- .3 day and night all the way down... the current tank has been on there nearly three years now and still has some left.

On the other FM, the leakage was so bad it wasn't cost effective to buy Ni tanks so we put an aircompressor on it. I set it to turn on at 100#, off at 125# (If you keep the pressure over 100# it will only hold up to 3% water if I remember right.). It's a cheap one from Harbor Freight. I set it's regulator to 25#, run it through a desiccant drier, then through a cheap ($15) low press regulator set to 3.5#. In three years, I have not had to change the desiccant and the pressure stays 3.3-4.2 day and night. The compressor used to run twice per day but now runs every hour. This is a "temporary" fix because we plan to relocate the transmitter and antenna this year.

Of course, in the future, I would prefer a better quality regulator.

Tom Van Gorkom
Radio Esperanza Engineering, KRIO AM/FM, KOIR FM
Office: 956-380-8150  
Cell: 865-803-7427

Rio Grande Bible Institute
4300 S US Hwy 281
Edinburg, TX 78539

On Thu, May 18, 2017 at 3:02 PM, Steve Tuzeneu <stuzeneu@gmail.com> wrote:
Bill:

You might want to get a dehydrator and forget the nitrogen tank.  If you buy a new Andrew it will cost about $3,000.  Or you can buy this unit for less than half and install your own regulator.


And yes, you can take your regulator to Air Gas or some other place and have your regulator rebuilt.

Steve

On Thu, May 18, 2017 at 3:57 PM, Bill Hurne <billhurne@pilgrimradio.com> wrote:

Ok, thanks.   I haven’t had a lot of experience with these going bad.   With our current one, the output pressure varies a lot with changing input pressure as the bottle discharges.   Need to turn the adjustment handle several turns to compensate, a chore to keep the output where it should be.

 

Is this a re-buildable symptom?

 

Bill

 

From: Pat Wahl [mailto:pwahl@wwib.com]
Sent: Thursday, May 18, 2017 12:49 PM
To: CRTech
Subject: Re: [CRTech] Ntrogen Regulator

 

We bought a more expensive one from Harris. Then, we had the original regulator rebuilt. We put that one back in service. We liked the meter scale better than the Harris. So the Harris is on the shelf as a spare.

 

Pat Wahl

WWIB/WOGO

Chippewa Falls, WI

 

On Thu, May 18, 2017 at 2:39 PM, Bill Hurne <billhurne@pilgrimradio.com> wrote:

What’s a good source for a nitrogen bottle regulator?

 

Our local nitrogen bottle supplier says $150 for the low output pressure ones.

 

Broadcast supplier $500 for an Andrew.

 

Why the price discrepancy?   Do we need the broadcast one?

 

Bill Hurne

Chief Engineer

The Pilgrim Radio Network

775-883-5647 x18

PR_finalJ 728X90

    Western Inspirational Broadcasters, Inc

 

 

 

 






References: Ntrogen Regulator
("Bill Hurne" <billhurne@pilgrimradio.com>, 18 May 2017 19:39:23 -0000)
Re: Ntrogen Regulator
(Pat Wahl <pwahl@wwib.com>, 18 May 2017 19:49:17 -0000)
RE: Ntrogen Regulator
("Bill Hurne" <billhurne@pilgrimradio.com>, 18 May 2017 19:57:43 -0000)
Re: Ntrogen Regulator
(Steve Tuzeneu <stuzeneu@gmail.com>, 18 May 2017 20:02:58 -0000)
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