SKU: 50178833113

Original Photoelectric / Contact Tachometer DT-2859

Sale price$321.30 Regular price$357.00
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Description

Original Photoelectric / Contact Tachometer DT-2859Ships FREE Handling Day: 1 3 Days, Arriving Day: 15 35 Days[SHORTDESCRIPTION]Packing List photoelectricity Contact tachometer Specification and model DT 2859 Product application Used to measure the speed of motorLinear velocity or frequencyWidely used in motorElectric fanpapermakingPlasticchemical fiberautomobileaircraftShipbuilding and other manufacturing industries One meter for multiple purposesoneplatformThe instrument can be used

Ships FREE Handling Day: 1-3 Days, Arriving Day: 15-35 Days[SHORTDESCRIPTION]

Packing List

photoelectricity/Contact tachometer

 

Specification and model:

DT-2859

Product application:

Used to measure the speed of motor、Linear velocity or frequency;Widely used in motor、Electric fan、papermaking、Plastic、chemical fiber、、automobile、aircraft、Shipbuilding and other manufacturing industries。

One meter for multiple purposes。oneplatformThe instrument can be used asphotoelectricitytypespeedsurface,Non contact speed measurement(r / min);It can also be used asContact tachometerconductspeedandLinear velocitymeasure( m / min , ft / min )Contact measurement of metal。Frequency can also be measured,cycle,Number of pulses,Pulse distance,customPulse distanceetc.。
*
digital display,Parallax free。
*
Wide measurement range,High resolution。
*
Automatic memory of large values during measurement、Small value and one measurement。
*
Strong structure、delicate,be easy to carry about。The whole machine adopts durable advanced electronic components;The shell is light and hardABSPlastic,Beautiful appearance,Easy to use。

measuring range

photoelectricity

2.5 ~ 99,999 r / min

Contact

0.5 ~ 19,999 r / min

Linear velocity

0.05 ~ 1999.9 m / min 0.2 ~ 6560 ft / min

frequency

0.04 ~ 1666.65 Hz

resolving power

speed

0.1 r / min (0.5 ~ 999.9 r / min)

1 r / min (1000 r / minabove)

Linear velocity

0.01 m / min (0.05 ~ 99.9 m / min)

1 m / min (100 m / minabove)

or0.1 ft / min (0.1 ~ 999.9 ft / min)

1 ft / min (1000 ft / minabove)

Accuracy

± (0.05% n + 1 d)

Sampling time

1.0 s60 r / minabove)

Range selection

Automatic switching

Memory value

large/Small/value

Time base

quartz crystal

Effective distance

50 ~ 250 mm(Canontypevalue)largeby600 mmIt depends on the brightness of the LED

Power consumption

about80 mA(During measurement)

Operating temperature

0 ~ 50 °C

Power Supply

4section7No. 2 battery

size

host

140 x 72 x 34 mm

sensor

Φ 45 x 195 mm

weight

245 g(Battery free)

Standard configuration:

1.host....................................1platform

2.sensor...............................1platform

3.Portable case.................................1individual

4.instructions.................................1share

5. 350mmReflection zone.....................2strip

6.Taper adapter(AS35A) ............1individual

7.Funnel adapter(AS35B) .........1individual

8.planeLinear velocityround(AS35C) .........1individual


Shipping Notes
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Exchange/Return Notes
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SKU: 50178833113

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4.3 ★★★★★
Based on 19 reviews
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M
Verified Purchase
Mark Campbell
Chelsea, US
★★★★★ 4
Nice scale
Color: Black
Works as expected, nice size. Makes a big difference when adjusting espresso extraction. I haven't used the timer. One improvement for my use would be to move the power switch from the back to the front, on the side or on the control panel.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
J
Verified Purchase
Jerry McCamman
Lowell, US
★★★★★ 5
accurate scale
Color: Black
great product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
P
Verified Purchase
Peter Merritt
West Palm Beach, US
★★★★★ 5
Best Mid Priced Scale on the Market!
Color: Black, Color: Black
Hand down the best prices scale for the price. Excellent ability to precisely dial in pour overs. I’ve been waiting a long time for a scale like this to hit this price point.
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Reviewed in the United States on May 16, 2026
A
Verified Purchase
amazon user
Grantham, US
★★★★★ 5
Good
Color: Black
This food scale is accurate, easy to use, and very helpful for cooking and baking.
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Reviewed in the United States on May 13, 2026
J
Verified Purchase
Jason C
Louisville, US
★★★★★ 5
4.95 stars
Color: Black
TLDR: Buy it. It works well, it has impressive and useful features, it looks great, it’s thin/low-profile, and it’s a great price. Detailed review: I’m very happy with this scale, and it has certainly upped my espresso game by leaps and bounds. I’m able to weigh my beans very precisely down to a tenth of a gram (roughly the weight of a single bean), so my dosing is on point. Also, it fits beneath the portafilter with room to spare for my cup, so I can weigh my shots and accurately measure my input/output ratio. And automatic mode is magic! When the espresso hits the cup, the timer starts running, so I can measure flow rate along with everything else! Overall, super easy to use and very necessary for the at-home barista. One caveat: It acted weird on the 2nd or 3rd day, and I thought I was going to have to return it. The weight would slowly creep up even though I wasn’t adding any coffee. I dusted it off, made sure it was dry, set it on a more stable surface… I still don’t know what the matter was, but it stopped freaking out and it hasn’t really given me any trouble since. Also, I should mention that the automatic function doesn’t always work 100% perfectly; it works, and usually works quite well, but depending on the flow rate, you might get some drops dribbling into the cup and the timer not detect it right away. (I think the timer must be activated according to some sort of algorithm that looks for a certain increase in a certain amount of time, so a slower initial drip rate might not trigger it at first.) Also weirdly, it seems like about half of the time when the weight stops increasing (i.e., espresso stops flowing) , the timer pauses (as I think it’s supposed to do), but other times, the timer keeps running until you manually stop it. I don’t know… It’s a weird glitch, I guess, but it doesn’t really make any difference. The weight is accurate, and that’s the primary thing to keep an eye on. So, is it perfect? No, I guess not. But, it works extremely well and functions perfectly for my purposes. In fact, it’s a lot nicer and fancier than I expected – plus, it’s more affordable and more streamlined than its obvious rival the Acacia.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2024

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