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M&A INSTRUMENTS INC

TM8812 Ultrasonic Thickness Gauge 1.2-200mm,0.05-8inch

18 customer reviews

| 28 answered questions

Price:

$183.98

Only 7 left in stock - order soon.

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Sold by M&A INSTRUMENTS INC and Fulfilled by Amazon. Gift-wrap available.

New (1) from $183.98 & FREE shipping. Details

Specifications for this item

Brand Name	M&A INSTRUMENTS INC
EAN	0519805775667
Model Number	TM8812
Part Number	TM8812
Size	full size
UNSPSC Code	41111600
UPC	519805775667

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Product features

Wide measuring range: 1.2 to 200mm/0.06 to 8 inch
High accuracy of 0.5%n+0.1
Sound velocity: 500 to 9000m/s

Product description

Features:

Wide measuring range: 1.2 to 200mm/0.06 to 8 inch
High accuracy of 0.5%n+0.1
High resolution of 0.1mm
Low battery indication
Capable of measuring any hard materials, including steel, cast iron, aluminum, red copper, brass, zinc, quartz glass, polyethylene, PVC, gray cast iron, nodular cast iron and other materials

Specifications:

Model: TM8812
Measuring range (metric/imperial): 1.2 to 200mm/0.06 to 8inch
Operating principle: ULTROSONIC
Materials measured: Any hard materials, including steel, cast iron, aluminum, red copper, brass, zinc, quartz glass, polyethylene, PVC, gray cast iron, nodular cast iron and other materials
Sound velocity: 500 to 9000m/s
Lower limit steel pipes: 15(D)*2.0mm, 20(D)*3.0mm determined by the transducer
Calibration block: Included
Resolution: 0.1mm
Accuracy:±(0.5%n+0.1)
Power supply: 4*1.5V AA(UM-4)battery (not included)
Battery indicator: Low battery indicator
Operating conditions: Temperature0~40ºC Humidity<85%RH
Dimensions: 120*62*30mm

Package includes:

1 * Ultrasonic Thickness Gauge
1 * Ultrasonic sensor
1 * Operating Manual
1 * Carrying Case

Product details

Shipping Weight: 1.5 pounds (View shipping rates and policies)
ASIN: B00DKW4IYO
Item model number: TM8812
Average Customer Review: 18 customer reviews
Amazon Best Sellers Rank: #50,854 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
- #30 in Industrial & Scientific > Test, Measure & Inspect > Dimensional Measurement > Thickness Gauges

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Customer Reviews

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Top customer reviews

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Stephen

Worth the money, will pay itself by avoiding spending big money on questionable engine blocks.

March 26, 2016

Verified Purchase

Worth the money for checking engine blocks since it has grey cast iron setting. Calibrate with included steel block and then switch mode for material. You will notice that checking calibration block with meter on a different material setting will not produce calibration value since block is steel. That's how you know it's compensating for material selection. Did some initial accuracy checks on grey cast iron surfaces that I could also measure with calipers. Has decent accuracy even when surface isn't machined. +/- .010 on an as cast surface. I found it to be within claimed tolerance on machined surfaces. Does not get a reading when shooting into an irregular shapes or too close to edges. I.E. extreme top and bottom of cylinders where casting material is transitioning. Once I knew it would work, I modified sensor to fit curvature of block for easier coupling of sensor. I put sandpaper in bore and carefully sanded sensor into approx shape. Keep center divider in line with cylinder length. Only sand enough so that coupling fluid has easier time taking up space. I used generic "personal lubricant, a.k.a. glycerine" and it's works well in any position. Manual recommends oil, but thicker glycerin seems to work fine.

Comment 5 people found this helpful. Was this review helpful to you?

Yes

Oilfield Hand

Great thickness gauge

June 28, 2014

Verified Purchase

A bit better built than the cheapest of the site, not so expensive as the top of the line, comes in a nice box, with a sensor, and a calibrating plate of steel (the size of a dime) glued to its body. No serial number to follow up calibration nor certificates, but I guess these can be gotten by a third party.

Comment 8 people found this helpful. Was this review helpful to you?

Yes

Justin S.

Seems to work so far...

March 27, 2017

Verified Purchase

I bought this to help me decide when parts on my combine, and hopefully other farm equipment, are wore out. Most places where I can have catastrophic failures are difficult to measure any other way. So far it seems to work quite well. I would like a little bit more range on the low side, but it does measure within its stated range. I checked it on a piece of sheet metal against a micrometer measurement and it was within 0.010". Which is close enough for me. All I need it to do is tell me where I have good steel and where I have tin foil.

Comment One person found this helpful. Was this review helpful to you?

Yes

one bad catTop Contributor: Camping

Simple, accurate, repeatable

May 20, 2016

Verified Purchase

Had it for a couple of months. It's simple to use, dependable, and provides accurate measurements (perhaps +/- 0.1 mm); it's actually surprisingly good, given its comparatively low price. Note that the nominal measurement range (starting at 1.2 mm) is given for iron / steel / aluminum. For materials with slower sound propagation (e.g., brass, copper, lead, plastics), the minimum range will be proportionately lower.

Comment One person found this helpful. Was this review helpful to you?

Yes

DirtMaster

Works reliably and readings are repeatable. I did find ...

February 9, 2016

Verified Purchase

Works reliably and readings are repeatable. I did find some disparity between micrometer measurement and ultrasonic measurement. Surface finish does seem to influence measurement by a few thousandths. Same part with mill finish on one side and polished on opposite side read differently depending on which side the sensor contacted. Since my primary use is to measure wear over time the repeatability is more important than absolute accuracy.

Comment One person found this helpful. Was this review helpful to you?

Yes

wleb

So far so good. Great value

November 24, 2014

Verified Purchase

So far so good. Great value, consistent so far, will follow up with more feedback.

I use this on our Crude Oil Hauling tankers, not for certifications, but to help us make quick assessments in the field and when buying.

Comment 5 people found this helpful. Was this review helpful to you?

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Bob

Not impressed

March 22, 2016

Verified Purchase

This device worked well the first time I used it for testing. The second time the probe would no longer measure or calibrate. There are no phone numbers to contact anyone in the user manual. I returned the product.

Comment 2 people found this helpful. Was this review helpful to you?

Yes

Anything is fixable

Good gauge for the money

March 15, 2017

Verified Purchase

Works great we use it around our shop for measuring wear on equipment parts and it works awesome for that, keeping in mind we are measuring differences of 1/16" or better haven't played with and checked tighter tolerances.

CommentWas this review helpful to you?

Yes

Most recent customer reviews

Randall A Massey

Very nice Tool with its own carrying case we checked it ...

Very nice Tool with its own carrying case we checked it against dial calipers and their dead on for the money you can't beat this tool.

Best price, fast delivery

Every thing ok.
Best price, fast delivery.
Thankyou

Worked well with the calibration block in my office but ...

Worked well with the calibration block in my office but would not measure in the field. Very poorly constructed meter.

Published on January 30, 2016

susan tupper

... measure aluminum hull thickness and worked well - very easy to work with but limited to bare metals

used it to measure aluminum hull thickness and worked well - very easy to work with but limited to bare metals.

Published on August 17, 2015

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