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The Dwyer Series 476A single-pressure digital manometer is used to perform single-pressure measurements and to set supply pressures, verify pressure switch operation, adjust regulators, check pneumatic systems, and computer peripherals. The meter is suitable for use with air and compatible gases, and has an accuracy of + or - 1.5% of full scale. The extruded aluminum case provides durability. The four-digit LCD displays the pressure measurement, and a zero function nulls minor pressure differences before measuring.
SpecificationsPressure typesSingleMedia typeAir and compatible gasesCase materialExtruded aluminumPressure unitsinH2O, mmH2O, bar, mbar, psi, inHg, mmHg, kPaConnection type3/16" or 1/4" inside diameter (ID) tubingMaximum pressure5 gauge psiDisplayFour-digit LCDResolution0.02 (inH2O)Temperature limits0 to 140 degrees F/-17.8 to +60 degrees CCompensated temperature limits32 to 104 degrees F/0 to 40 degrees CDimensions6-17/32 x 2-13/16 x 29/32 (H x W x D)Power9V alkaline battery (included)H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.
Manometers measure the pressure of a liquid or gas. They are used in laboratory, medical equipment, engineering, automotive, and heating, ventilation, and air-conditioning applications. Manometers measure any combination of gauge, absolute, or differential pressures. Gauge pressure is the amount of pressure in a system relative to the ambient pressure, absolute pressure is the amount of pressure in a system relative to an absolute vacuum, and differential pressure is the difference between two pressures. Analog manometers are composed of columns of liquid, and they use gravity and the liquid's density to calculate pressure. Because they have no moving parts, analog manometers do not require re-calibration. Digital manometers have pressure sensors that are connected to a system with a hose to provide a digital readout of the amount of pressure present in a system. They use microprocessors to calculate pressure, and they require periodic calibration to help ensure accuracy.
Dwyer Instruments manufactures measurement and control instruments, including pressure gauges, flow meters, level instrumentation, temperature instrumentation, and air quality monitors. The company, founded in 1931, is headquartered in Michigan City, IN.
Customer
Reviewed in the United States on March 25, 2016
After using once or twice screen has malfunction that only displays partial numbers, can't tell what they are most of the time, now useless and out of warranty.
Joe J.
Reviewed in the United States on November 16, 2015
It serves its intended purpose, works well. For the amount I paid, I was a little disappointed that it didn’t come with a hose. I had to purchase one for it at the pet store, which was the only place I could find one in town.
Customer
Reviewed in the United States on April 27, 2015
No problems
It’s me !
Reviewed in the United States on August 7, 2014
So far it's decent. I use this as a generator tech. Measuring Nat and Lp fuels.
alyieldi
Reviewed in the United States on December 14, 2014
Works great, easy to use and read. Thank you.
me
Reviewed in the United States on December 13, 2014
Very happy with this. Shipping was fast and I was able to set my gas pressures with no problems.Disappointed that it did not come with at least a hose.
Chris Bluitt
Reviewed in the United States on October 23, 2014
Does the job .Is what I was looking for
nick k
Reviewed in the United States on October 15, 2014
JUNK! This monometer was only used around 8 times for testing crankcase pressure and now it does not work at all. The readings bounces from - 20 to 20 with out even being hooked up to anything the 0 button does not respond. Dwyer warranty and customer service is horrible just like the instrument they sell.Also, for no extra charge this manometer ships with stress cracks in the upper covers where the screws were over tightened that hold the cover in place. The unit is poorly put together!
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