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Author Topic: Accurate Gauges  (Read 163 times)

Alan

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Accurate Gauges
« on: September 27, 2017, 03:31:45 PM »
About a month ago, I ask the group about 23 mm gauges, and where to buy accurate ones. One company I was referred to was Dwyer. Well, I ordered them, and waited 3 weeks or so to get them. The 0/3000 gauge ended up being a 0/4000, and the 0/5000 gauge turned out to be 0/6000! I got an RMA due to the errors. And, they're made in China!

Not daunted, I kept looking, and contacted Wika directly. This, because I found some info on their 111.12 series which are 27 mm. They don't make them as standard model any longer. Ah, gee, now what? After contacting the lovely young lady at Wika, I order the gauges shown below. Yes, they are expensive, but they're Class 4, which means they have an accuracy of ±4% of their range. That I can live with. And, it should be obvious why one would want an accurate gauge, especially on the regulated side if you switch pellet weights occasionally.

I might add, these are as large as you can use on a W.A.R. or similar airguns which have both gauges on one side of the regulator. It is no big deal to reverse the position of the high pressure side gauge to the right side of the bottle adapter/regulator assembly with the Foster fitting. This would allow the use of the next step up which is ≈40 mm, which could be ordered as Class 2. I'm not going to worry about that, as long as these new units work as advertised.

I'll report back once I get them installed about mid November.

Part Number: TBD
Description:
Burdon tube pressure gauge,model 1x1.12.26/27
Type: 111.12
Nominal size: 27 mm
Unit of outer Scale: psi / -inHg
Measuring range: gauge pressure range
Scale range: 0/2000 psi
Process Connection: 1/8"NPT
Case material: bras
Accuracy Class: Class 4.0
Pointer: Plastic, Black
Packing: bulk-packing
Process Connection/Case Surface: blank
Dial: Plastic, White, with Stop Pin
Ingress Protection: Standard
Dial description:
Pressure Gauge Standard: US-Standard
color for 1.scale (outside): black
dial background: White
Manufacturer logo: *WIKA®*
stop pin on dial: at zero
Price: $53.94
Estimated Lead Time: 40-45 working days aro
TP Code: 111.12-K-PG514Z-NHIZZGBZZZ
 
Part Number: TBD
Description:
Burdon tube pressure gauge,model 1x1.12.26/27
Type: 111.12
Nominal size: 27 mm
Unit of outer Scale: psi / -inHg
Measuring range: gauge pressure range
Scale range: 0/6000 psi
Process Connection: 1/8"NPT
Case material: bras
Accuracy Class: Class 4.0
Pointer: Plastic, Black
Packing: bulk-packing
Process Connection/Case Surface: blank
Dial: Plastic, White, with Stop Pin
Ingress Protection: Standard
Dial description:
Pressure Gauge Standard: US-Standard
color for 1.scale (outside): black
dial background: White
Manufacturer logo: *WIKA®*
stop pin on dial: at zero
Price: $53.94
Estimated Lead Time: 40-45 working days aro
TP Code: 111.12-K-PG541Z-NHIZZGBZZZ


  • Roswell, New Mexico
Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.

Nvreloader

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Re: Accurate Gauges
« Reply #1 on: November 12, 2017, 07:21:08 AM »
Well, what's the verdict?

Tia,
Don
  • Western NV
NRA Life member

"We must reject the idea that every time a law's broken, society is guilty rather than the lawbreaker.
It is time to restore the American precept, that each individual is accountable for their actions"
Ronald Reagan

"Speeds fine, but Accuracy is final"

Alan

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Re: Accurate Gauges
« Reply #2 on: November 12, 2017, 01:17:26 PM »
They are very good! I tested both against my Class 1 Wika gauge, and I can't tell the difference in reading. One of the original Chinese units, read about 800 PSI too high, and the other about 500 too low.
  • Roswell, New Mexico
Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.